Mechanical fastener, fastening system, and disposable absorbent article.

(54) Title: MECHANICAL FASTENER, FASTENING SYSTEM, AND DISPOSABLE ABSORBENT ARTICLE.

(54) Title: MECHANICAL FASTENER, FASTENING SYSTEM, AND DISPOSABLE ABSORBENT ARTICLE.

(57) Summary

A mechanical fastener is described that includes a thermoplastic backrest and multiple upright fasteners, having a post with a proximal end coupled to the thermoplastic backrest and a distal end comprising a cap larger in area than a cross sectional area of ​​the post. The basis weight of the mechanical fastener is in a range of 25 grams per square meter to 75 grams per square meter, and the height of the multiple upright fasteners is up to 300 microns. The fastening systems and disposable absorbent articles including the mechanical fastener are also described.

(57) Abstract

A mechanical fastener is disclosed that includes a thermoplastic backing and multiple, upstanding fastening elements that have a post with a proximal end attached to the thermoplastic backing and a distal end comprising a cap larger in area than a cross-sectional area of ​​the post. The basis weight of the mechanical fastener is in a range from 25 grams per square meter to 75 grams per square meter, and the height of the multiple, upstanding fastening elements is up to 300 micrometers. Fastening systems and disposable absorbent articles including the mechanical fastener are also disclosed.

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IMPI

ASÍN l «Λ _?W · -h · ΑΓ * ^ ** · * ^ ^FÍN: H · '> I Κι M

PATENT TITLE No. 360348

3M INNOVATIVE PROPERTIES COMPANY

3M Center, Saint Paul, Minnesota, 55144-1000, USA

MECHANICAL CLIP, FASTENING SYSTEM, AND DISPOSABLE ABSORBENT ARTICLE.

A61F13 /

Classification:

0T24 / 27

Validity: V

Exp Date

The patent of refere

Inventor (s):

Pursuant to the as of the date of prese

<img file="MX360348B_D0001.tif" />

TO H; TADATO ORITANI;

icionali i!

CIP: CPC:

TIMOTH1 zHicm, NG; NEE

Number ^

MX / a / 2014 / 0l

Veustrial Date.

Who subscribes to this title (Official Gazette of the Federation 25/01/2006, 06/05/2009, 06/01/2010 and 12th sections I and III of the Regime, 07/28/2004 and 7/09/2007) ; articles 1, 3,

Industrial Property (DOF 12/27/1999, n powers of the Deputy General Directors, Departmental Coordinators and other subordinates of 07/29/2004. 08/04/2004 and 09/13/2007).

carry over, counted to hos.

Industrial Property Law / J999, 01/26/2004, 06/16/2005, 1st, 3rd fraction V, subsection a), 4th ado on 07/01/2002, 07/15/2004, Mexican Institute of the 3rd and 5th subsection a) of the Agreement that delegates Regional, Divisional Deputy Directors, ial. (DOF 12/15/1999, amended on 02/04/2000,

This letter is signed with an advanced electronic signature (FIEL), based on articles 7 BIS 2 of the Industrial Property Law; 3 of its Regulations, and 1 section III, 2 section V, 26 BIS and 26 TER of the Agreement establishing the guidelines for the use of the Electronic Payment and Services Portal (PASE) of the Mexican Institute of Industrial Property, in the procedures indicated.

THE DIVISIONAL DIRECTOR OF PATENTS

NAHANNY CANAL REYES

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Original string:

NAHANNY MARISOL CANAL REYES | 00001000000403252793 | Administration Service

Tax | 1695 || MX / 2019/4241 | MX / a / 2014/002357 | PCT patent title | 1220 | RRGO | Page (s)] 830 / A + W3 + JEa7ksD63oJUrVxNlg =

Digital stamp:

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CuSJ8YQL2QeqZH0AJtCPwQ8fgkvde6MtG91vgoAFIBmkNzQSvrKPS7KHwCxMfO3TZ6rz6JtA ==

<img file="MX360348B_D0003.tif" />

Arenal No. 550, Floor 1, Pueblo Santa María Tepepan, Xochímilco 16020.

Mexico City.

(55) 53340700 www.gob.mx/impi

MX / 2019/4241

<img file="MX360348B_D0004.tif" />

<img file="MX360348B_D0005.tif" />

MECHANICAL CLIP,

HOLDING SYSTEM,

INDUSTRIAL

<img file="MX360348B_D0006.tif" />

DISPOSABLE ABSORBENT

Background of the Invention

Mechanical fasteners, which are also called crochet and curl fasteners, typically include a plurality of closely spaced upright protrusions with loop engaging heads useful as hook members, and the loop or curl members typically include a plurality of woven loops , non-woven or knitted. Mechanical fasteners are useful in providing releasable coupling in many applications. For example, mechanical fasteners are often used in portable, disposable absorbent articles to hold such articles around a person's body. In typical configurations, a hook strip or patch on a tether tab attached to the back waist portion of a diaper or incontinence garment, for example, can secure a landing area of ​​the loop material over the front region of the waist, or hook strap or patch may be secured to the backsheet (eg, non-woven backsheet) of the diaper or incontinence garment in the front waist region. Mechanical fasteners are also useful for items

Ref. 247165

<img file="MX360348B_D0007.tif" />

<img file="MX360348B_D0008.tif" />

A disposable towel such as sanitary napkins.

Sanitary typically includes a backsheet that is intended to be placed adjacent to the wearer's underwear.

The backsheet may comprise hook fastening elements for securely attaching the sanitary napkin to the underwear, which is mechanically coupled with the hook fastening elements.

Hook and loop fastening systems can include at least two characteristics of coupling strength: peel strength and break resistance. The peel strength corresponds to breaking at the force required to disengage the clamp members from each other by detaching a clamp member up and away from the clamp member. The shear strength corresponds to the force required to disengage the clamp members from each other by pulling at least one of the clamp members away from the other in a plane that is parallel to the clamp member. Typically, the coupling strength of the clamping members is higher in shear than shear. While the peel force can be a factor when the clamp members are intentionally separated, typically the shear strength is responsible for keeping the clamp members together during normal use.

<img file="MX360348B_D0009.tif" />

IMPI

MEXICAN INSTITUTE PE.LA PROPERTY Brief Description of the Ιηνβηοιοι1^{Ν01ί5Τί1ΛΙ}The mechanic with the present disclosure provides a relatively low basis weight compared to conventional mechanical fasteners and conventional fastening members, and also provides disposable absorbent articles containing the mechanical fastener.

Decreasing the basis weight of the mechanical fastener results in lower manufacturing cost and advantageously decreases the amount of thermoplastic material that is discarded, for example, when a disposable absorbent article including the mechanical fastener is discarded.

Despite its low basis weight, the mechanical fastener described herein has comparable or better coupling to loop materials than higher base weight mechanical fasteners, measured by the shear stress and shear test.

High coupling to loop materials is observed even for so-called low-trace loop materials, which are being used more frequently for disposable absorbent articles to decrease the cost and amount of material on the disposable absorbent article.

Thus, the mechanical fasteners described herein can be considered as possessing high material efficiency. Typically, the mechanical fasteners described herein are

IMPI

MEXICAN INSTITUTE OE INDUSTRIAL PROPERTY

<img file="MX360348B_D0010.tif" />

also soft to the touch on the first surface having the upright fasteners and the second opposite surface.

In one aspect, the present disclosure provides a mechanical fastener that includes a thermoplastic backrest and multiple upright fasteners that with a proximal end attached to the backrest have a thermoplastic post and a distal end with a larger cover in area a sectional area mechanical clamp square meter to 75 that transverse of the pole. He is in a range of grams per square meter, gram basis weight per and the height of the multiple upright fasteners is up to 300 micrometers.

In some embodiments, the base weight of the mechanical fastener may be 40 (gsm) to 75 gsm, 50 gsm to 75 gsm, or

In yet another aspect, grams per square meter to

The provides a clamping system that gsm.

This description includes the mechanical fastener described above and a loop material for coupling with the modalities, the basis weight is in a range of grams per square meter.

mechanical fastener.

In some of

In another aspect the fiber of the loops material grams per square meter to 30 more.

The present disclosure provides a disposable absorbent article that includes the above mechanical fastener or restraint system.

<img file="MX360348B_D0011.tif" />

IMPI

MEXICAN INSTITUTE

OF THE PROPERTY

INDUSTRIAL described.

In this application, terms such as one, one, one, and and are not intended to refer only to a singular entity, but include the general class of which a specific example can be used for illustration. The terms one, one, one, and and are used interchangeably with the term at least one or one. The phrases at least one of and comprises at least one followed by a list refers to any of the items on the list and any combination of two or more items on the list. All numerical ranges are inclusive of your endpoints and non-integer values ​​between endpoints unless otherwise stated.

The term upright refers to posts that protrude from the thermoplastic backrest and includes posts that remain perpendicular to the backrest and posts that are at a different angle to the backrest than 90 degrees.

The term multiple means more than one and can include any desired number of upright fasteners.

The terms first and second are used in this description in their relative sense only. It will be understood that, unless otherwise indicated, these

<img file="MX360348B_D0012.tif" />

terms are used merely as a matter of

<img file="MX360348B_D0013.tif" />

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

<img file="MX360348B_D0014.tif" />

<td>convenience</td><td>in the</td><td>description</td><td>of a</td><td>or more</td><td>of the</td>

<td>modalities.</td><td></td><td></td><td></td><td></td><td></td>

<td>The</td><td>brief</td><td>description</td><td>previous</td><td>of the</td><td>Present</td>

<td>description</td><td>no this</td><td>destined to</td><td>describe</td><td>every</td><td>modality</td>

described or each implementation of the present description.

The following description more particularly exemplifies the illustrative modalities. It should be understood, therefore, that the figures and the following description are for illustration purposes only, and should not be read in any way.

<td>that i could</td><td>unduly limit the scope of this</td>

<td>description.</td><td>Brief Description of the Figures</td>

<td>The</td><td>description can be more completely</td>

<td>understood in</td><td>consideration of the following description</td>

detailed of the various modalities of the description, in connection with the attached figures, in which:

FIG. 1 is a side view of an exemplary upright fastening element on a thermoplastic backing useful in the mechanical fastener described herein, where the various dimensions of the upright fastening element are shown; and

Figure 2 is a perspective view of an exemplary disposable absorbent article including a mechanical fastener in accordance with the present disclosure.

<img file="MX360348B_D0015.tif" />

IMPI

MEXICAN INSTITUTE OE INDUSTRIAL PROPERTY

Detailed description of the invention ^1,1 -! IU 111

Reference will now be made in detail to the embodiments of the description, one or more examples of which are illustrated in the figures. The features illustrated or described as part of one embodiment can be used with other embodiments to still produce a third embodiment. The present description is intended to include these and other modifications and variations.

Referring to Figure 1, the mechanical fastener according to the present description includes a thermoplastic backrest 14 with multiple upright fasteners attached to the thermoplastic backrest 14. As shown in the embodiment illustrated in Figure 1, the multiple upright support elements 11 have posts 10 with proximal ends 10a attached to the thermoplastic backing 14 distal ends 10b comprising a cap 12 with an area larger than a cross-sectional area of ​​the pole 10.

The cap extends a protruding distance or beyond the post. The height h of the upright clamping element is the distance between the thermoplastic backrest 14 and the distal end 10b of the upright clamping element 11 as shown in Figure 1. The thickness t of the thermoplastic backrest 14, the width w of the post at its base, width w¹ of the post just below the cap, and the width w² of the cap are also shown in Figure 1.

Various factors include • -3 L. ·.

.. &gt;.

<img file="MX360348B_D0016.tif" />

mechanical fastener. For example, the USU gives¹ Lower density thermoplastic polymers will decrease the basis weight of the mechanical fastener.

Furthermore, the height h and the width w of the upright fasteners influences the amount of material in the mechanical fastener and therefore influences its basis weight. In the illustrated embodiment, the amount of material in the cap, which refers to the width of the cap w², also influences the basis weight. The thickness of the backrest t tends to have a great influence on the base weight of the mechanical fastener. Typically, the thickness of the backing t in the mechanical fastener described herein is in a range of 20 microns (pm) to 80 pm. In some embodiments, the thickness of the backing t is in a range of 30 μπι to 75 pm, 40 pm to 75 pm, 20 pm to 70 pm, or 30 pm to 70 pm. For the purposes of this application, all dimensions of the upright fasteners described herein with reference to Figure 1 and the claims are measured by light microscopy.

The height h of the upright fasteners is low enough to keep the basis weight at 75 gsm or less and provides excellent coupling to the loop materials (for example, the loop materials of

<img file="MX360348B_D0017.tif" />

upright support 11 low tracing). In the mechanical fastener according to this description, the elements of have a maximum height h of up to

300 pm, in some modalities up to 285 pm, 275 pm, or

250 p.m.

In some embodiments, the mechanical fastener according to the present disclosure has the upright fasteners with a minimum height h of at least 40 pm, in some embodiments, at least 50 pm, 100 pm, or 140 pm.

In some embodiments, the mechanical fastener according to the present disclosure has upright holding members 11 with a height of

150 pm to

300 h in an interval pm, 40 pm a

<td> 285</td><td>p.m,</td><td>100 pm to 275 pm, 140</td><td colspan="4">pm to 250 pm, 50 pm to 300 pm,</td><td> 50</td>

<td>p.m</td><td colspan="2">at 285 pm, 50 pm at 275 pm,</td><td>100 pm</td><td>to</td><td>250 pm,</td><td>100 pm to</td><td> 285</td>

<td>p.m,</td><td> 100</td><td>pm to 300 pm, 140 pm to</td><td>275 pm,</td><td>or</td><td>155 pm to</td><td>250 pm.</td><td></td>

<td></td><td></td><td colspan="2">Typically the elements</td><td>of</td><td>restraint</td><td>upright</td><td> 11</td>

in the mechanical fastener according to the present disclosure they have aspect ratios (i.e., a ratio of height h to the highest width dimension w) of up to about 2: 1, 1.5: 1, or 1.2: 1. The posts 10 may have a cross section with a maximum width dimension w of up to 250 pm and at least 100 pm. In some embodiments, the posts 10 have a cross section with a width dimension w in a range of 125 pm to 200 pm or 135 pm to 190 pm. The term width dimension should be understood to include the

IMPI

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

<img file="MX360348B_D0018.tif" />

diameter of a pole 10 with an eigcttíng tranavegeal section¹.·

When the post 10 is more than one dimension wide (for

<td>example,</td><td>on a rectangular or elliptical shaped pole in</td>

<td>section</td><td>cross), the proportion between dimensions</td>

<td>described</td><td>here is the height over the dimension of</td>

larger width.

In the mechanical fastener according to the present description, the upright fastening elements 11, which can be made, for example, by any of the methods described below, can have a post 10 that tapers, for example, from the proximal end 10a toward distal end 10b. Proximal end 10a may have a larger width dimension w than post 10 adjacent cap 12, where the width dimension is w¹ shown in Figure 1. In some embodiments, posts 10 have a width dimension w¹ immediately below the cap at an interval of 100 pm to 200 pm, 120 pm to 195 pm, or 130 pm to 185 pm. Tapering can facilitate removal of post 10 from the mold surface in the methods described further.

<td>ahead</td><td>Again,</td><td>the</td><td>proportion</td><td>between</td><td>dimensions</td>

<td>described</td><td>above is</td><td>the</td><td colspan="2">height h above the</td><td>dimension of</td>

<td colspan="2">largest width w.</td><td></td><td></td><td></td><td></td>

<td></td><td>The elements</td><td>of</td><td>restraint</td><td colspan="2">mechanics described</td>

they previously have caps that are typically larger in area than in the cross sectional area of ​​the posts.

<img file="MX360348B_D0019.tif" />

In some embodiments, the cross sectional area of ​​the post is measured just below the cap (for example, at the point where the width w¹ is displayed). Furthermore, a one dimension width ratio of the cap formed to the pole measured at the proximal end is typically at least 1.01: 1 or 1.2: 1 and can be up to 2: 1. Referring again to Figure 1, the caps 12 may have a maximum width dimension w² up to 380 pm and at least 150 pm. In some embodiments, the caps 12 have a width dimension w² in an interval of 150 pm to 350 pm or 170 pm to 340 pm. The dimension of width w² It is measured by looking at the caps from above. The term width dimension is to be understood as including the diameter of a cap 12 with a circular cross section. When the cap 12 is more than one dimension wide (for example, in a rectangular or elliptical shaped cap in cross section), w² it is measured at the widest point of cap 12.

Width w² of cap 12 and the width of post 10 toward distal end 10b are related to the boss or cap. Specifically, the protrusion or cap in the illustrated mode is calculated from the formula (cap width w² - post width at the distal end) divided by 2. In some modalities of the mechanical fasteners according

IMPI

MEXICAN INSTITUTE

OF THE PROPERTY

INDUSTRIAL this

<img file="MX360348B_D0020.tif" />

Description, the distance of the overhang is up to 90 pm.

In other words, the ledge extends up to 90 pm beyond the post. In some modalities, the overhang is up to 85, 84 pm, 82 pm, or 80 pm. The minimum amount of the protrusion can be selected, for example, based on the diameter of the loop fiber that is selected to mate with the mechanical fastener described herein. In some modalities, the overhang is at least 5 pm or 10 pm. The overhang may be in the range of, for example, from 5 pm to 84 pm, 5 pm to 80 pm, or 5 pm to 75 pm.

For modalities in which the mechanical bra described herein is used for pad fixation (eg, in an adult incontinence article as described below), the protrusion may be in the range of, eg, 5 pm until 65 pm.

Mechanical fasteners according to the present description that have upright fasteners with a

<td>proportion</td><td colspan="4">distance from the projection, calculated as</td>

<td colspan="2">described above,</td><td>at height h.</td><td>The proportion</td><td>I know</td>

<td>It refers to</td><td>how much the</td><td>cap or the</td><td colspan="2">pole will flex</td>

<td>when the</td><td colspan="2">upright clamping element</td><td>be exposed to</td><td>a</td>

<td>force of</td><td>cut and by</td><td>so much is</td><td>named here</td><td>by</td>

convenience like the flex index. In some forms of the mechanical fastener described herein,

IMPI

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

<img file="MX360348B_D0021.tif" />

bending elements up to clamping upright have an index of

0.6, 0.50, or 0.45.

For example, upright fasteners can have a flex ratio of 0.02 to 0.6 or 0.05 to 0.5.

For a flex index below 0.02, the post can flex when the mechanical fastener is exposed to a shear force, decreasing the coupling resistance. For a flexion index greater than 0.6, the cap can flex when the mechanical fastener is exposed to a shear force, decreasing the coupling resistance.

Many thermoplastic materials are useful for mechanical fasteners according to the present description. Suitable thermoplastic materials for thermoplastic backing with upright fasteners include polyolefin homopolymers such as polyethylene and polypropylene, copolymers of ethylene, propylene, and / or butylene; ethylene-containing copolymers such as ethylene-vinyl acetate and ethylene-acrylic acid; polyesters such as polyethylene terephthalate, polyethylene butyrate, and polyethylene naphthalate; polyamides such as poly (hexamethylene adipamide); polyurethanes;

polycarbonates;

poly (vinyl alcohol) ketones such as poly (acrylonitrile-butadiene-styrene);

plasticized polyvinyl chlorides; and mixtures thereof.

polyether ether ketone;

polyphenylene sulfide;

Typically, for example, copolymer copolymers

<img file="MX360348B_D0022.tif" />

thermoplastic is a polyolefin, polyethylene, ethylene, butylene, and polypropylene, polybutylene, copolymer copolymers and

The various described above can master that having a propylene property, mixtures of these thermoplastic materials can be formulated in a desired batch (eg, color);

however, the presence or absence of colorants, pigments, or other dyes is not essential to this description.

In some embodiments, the thermoplastic backing with the upright fasteners can be made from a multi-layer molten stream or from multiple components of the thermoplastic materials. This can result in fasteners formed at least partially from a different thermoplastic material than one that predominantly forms the backrest. Various configurations of upright posts made from a multi-layer molten stream are shown in US Patent No. 6,106,922 (Cejka et al.), For example. A multi-layer or multi-component molten stream can be formed by any conventional method. A multi-layer molten stream can be formed by a multi-layer power block, such as that shown in US Patent No. 4,839,131 (Cloeren).

A multi-component molten stream that has

<img file="MX360348B_D0023.tif" />

Domain or regions with different components could also be used. Useful multi-component melt streams could be formed by using the inclusion co-extrusion die or other known methods (eg, that shown in US Patent No. 6,767,492 (Norquist et al.).

In mechanical fasteners according to the present description, the thermoplastic backing and the upright posts are typically integral (ie, formed at the same time as a unit, unitary). In some embodiments, the thermoplastic backrest and upright fasteners are made from the same thermoplastic material. The thermoplastic backrest is typically in the form of a sheet or net that can be essentially uniform in thickness with the upright fasteners directly attached to the thermoplastic backrest. Posts erected on a backrest can be made, for example, by conventional extrusion through a die and casting molding techniques. In some embodiments, a thermoplastic material is fed onto a continuously moving mold surface with cavities that are the inverse shape of upright posts. The height of the posts is determined by the depth of the cavities. Thermoplastic material can be passed

<img file="MX360348B_D0024.tif" />

I 'NSTTTUTOMEXICAIW of the PROPERTY

INDUSTRIAL by two rollers or

<img file="MX360348B_D0025.tif" />

between a clamping point formed a clamping point between a die face and a roller surface, with at least one of the rollers having the cavities (i.e. at least one of the rollers is a tooling roller). The pressure provided by the clamping point forces the resin into the cavities. In some embodiments, a vacuum can be used to evacuate the cavities for easier filling of the cavities. The attachment point has an empty space that is typically large enough such that a consistent back is formed over the cavities. The mold surface and cavities may optionally be air or water cooled prior to removal of the integrally formed backing and posts erected from the mold surface, such as by a puller roller.

Suitable tooling rollers can be made, for example, by forming (for example, by computer numerical control with perforation, photoengraving, using galvanic printed sleeves, laser perforation, electron beam perforation, metal punching, direct machining or lost wax processing), a series of holes that have the inverse shape of upright poles inside the cylindrical face of a metal mold or sleeve. Other suitable tooling rollers include those formed to

<img file="MX360348B_D0026.tif" />

<img file="MX360348B_D0027.tif" />

INDUSTRIAL starting from a series of plates defining a plurality of post-forming cavities around its periphery, such as those described, for example, in US Patent No. 4,775,310 (Fischer).

The cavities can be formed in the plates by perforation or photoprotection technology, for example.

Other suitable tooling rollers may include wire wrapped rollers, which are described in conjunction with their method of manufacture, for example, in United States Patent

No. 6,190,594 (Gorman et exposed mold, sleeve, plate or wire surface can be coated to impart surface properties such as increased wear resistance, controlled release characteristics, and controlled surface roughness. The coating, if present, is preferably selected such that the adhesion of the thermoplastic material to the tool roll is less than the cohesion of the thermoplastic material at the time of removal of the thermoplastic backing from the tool roll.

Another exemplary method for forming a thermoplastic backing with upright posts includes the use of a flexible mold band that defines an upright post-shaped cavity arrangement as described in US Patent No. 7,214,334 (Jens et al.). The mold band is pulled around the first and

<img file="MX360348B_D0028.tif" />

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY second rollers, and a molten fountain is accommodated to distribute the thermoplastic material to the mold band. The apparatus is constructed to force the plastic resin into the upright post-shaped cavities of the band, under pressure in an empty space to mold the upright post arrangement while forming the thermoplastic web layer.

Useful upright posts on a backrest can have a variety of heights above the backrest, which can be changed, for example, after a snapping process described below, to provide the upright fasteners of the mechanical fastener described in Present. For example, upright posts may have a maximum height (above the backrest) of up to 400 micrometers (pm), in some modalities up to

350 pm or 300 μπι. Upright posts can have a minimum height of at least 150 pm, in some modalities at least

160 μτη or 175 pm. The upright posts useful in accordance with the present description can have a height in a range of 150 pm to 400 pm or 150 pm to 350 pm.

Posts formed after exiting the cavities typically do not have caps, but these can subsequently be formed into upright fasteners described herein by a socket method as described in the US Pat.

MEXICAN INSTITUTE

PE INDUSTRIAL PROPERTY

United States No. 5,607,635 (Melbye et al.) The socket method includes deformation of the tip portions of the upright posts using heat and / or pressure. Heat and pressure, if both are used, could be applied sequentially or simultaneously. In some embodiments, the deformation involves bringing the distal tips of the upright posts into contact with a hot surface. The hot surface can be a flat surface or a textured surface such as that described in US Patent Nos. 6,708,378 (Parellada et al.) Or 5,868,987 (Kampfer et al.). In some embodiments, where the thermoplastic backing with the upright fasteners is a net of indefinite length, the deformation of the distal tips of the posts to form the caps includes movement of the net in a first direction through a point clamp having a hot surface member and an opposite surface member such that the hot surface member contacts the distal tips. In these embodiments, the hot surface may be, for example, a pinch roll. In some embodiments, the surfaces used to contact the distal tips may not be heated. In these modalities, the deformation is carried out with pressure and without heating. In some embodiments, the hot surface may be a roller

<img file="MX360348B_D0029.tif" />

hot

IMPI «MEXICAN TITUTE OF INDUSTRIAL PROPERTY opposed to a curved support surface

<img file="MX360348B_D0030.tif" />

forms a variable hold point that has a ^ TLongaEud.

clamp point variable as described, for example, in the US Patent

United States No. 6,368,097 (Miller et al.). The curved support surface can be curved in the hot roll direction, and the hot roll can include a feed mechanism to feed the thermoplastic backing with posts erected from the variable attachment point to compression fit the net between the hot roll and the support surface. In some embodiments, heating is carried out below a melting temperature of the distal tips. When the thermoplastic material used to form the upright posts is a copolymer (eg, copolymers of ethylene and propylene), the distal tips may have more than one melting temperature. In these modalities, below

<td>of a</td><td>temperature</td><td>of fusion</td><td>of</td><td>the distal tips</td>

<td>it means</td><td>under</td><td>of at least</td><td>a</td><td>of the temperatures of</td>

<td>fusion.</td><td></td><td></td><td></td><td></td>

<td></td><td>In some</td><td>modalities,</td><td>the</td><td>distal caps of</td>

the upright fasteners are reshaped after they are formed. For example, the passage of a thermoplastic backrest having the socket posts upright through a gap-free attachment point of a hot rubber roll and a backing roll, causes the protruding portions of the distal-cap, which

<img file="MX360348B_D0031.tif" />

<img file="MX360348B_D0032.tif" />

<img file="MX360348B_D0033.tif" />

they extend beyond the post, they are pushed down towards the backrest. This process is described in United States Patent No. 6,132,660 (Kampfer).

In addition to the continuous methods described above, it is also considered that thermoplastic backings having upright fasteners can be prepared using batch processes (eg, one-piece injection molding). The thermoplastic backrest can have any suitable dimension, but length (L) and width (W) dimensions of at least centimeters can be useful.

Yet another method for forming a thermoplastic backing with upright fasteners is profile extrusion, which is described, for example, in

Patent of the

state

United

No.

4,894,060 (Nestegard).

Typically, in this method, a thermoplastic flow stream is passed through a patterned matrix bead (eg.

cut by electron discharge machining) to form a network that has edges down the network. The edges may be transversely sliced ​​at spaced sites along the length of the edges to form the upright fasteners with a small gap caused by the cutter blade. The separation between the elements of

<td></td><td></td><td></td><td></td><td> 22</td><td>IMPI MEXICAN INSTITUTE OF PROPERTY INDUSTRIAL</td><td></td>

<td>restraint</td><td colspan="2">upright</td><td>is</td><td>so</td><td>increased</td><td>through</td>

<td colspan="2">stretching.</td><td>Without</td><td colspan="2">However, it</td><td>must understand</td><td>that the</td>

Erect fasteners do not include such edges before being cut. Such edges themselves may not be considered as possessing a projection for coupling to the loops because they may not be able to engage the loops before being cut and stretched. In some embodiments, the mechanical fasteners according to the present description are not made by profile extrusion.

In the mechanical fastener according to the present description, the upright fasteners, which can be made, for example, by any of the methods described above, can have a variety of cross-sectional shapes. For example, the cross-sectional shape of the pole may be a polygon (for example, square, rectangle, hexagon, or pentagon), which may or may not be a regular polygon, or the cross-sectional shape of the pole may be curved (for example, round or elliptical). In some embodiments, the posts taper and decrease in size from the proximal ends to the distal ends.

In general, the distal ends of the upright fasteners have a shape that is different from the shape of the post. For example, the clamping element can «Μ&gt;

<img file="MX360348B_D0034.tif" />

be in the shape of a mushroom (for example, 'CWi'l Lll'idc * circular or oval bee enlarged with respect to the post), a nail, or a T. Erect fasteners that have these shapes are typically considered multi-directional. In some of these embodiments, the protrusion extends beyond the posts on at least two opposite sides of the post. The extent of the overhang on the two opposite sides may or may not be the same. In some of these embodiments, the fastener is in the form of a mushroom (eg, with an enlarged oval or circular head relative to the post) or a nail. In upright fasteners having caps, the caps may have at least a portion of the protrusion in all directions although the amount of protrusion may not be the same in all directions.

The protrusion on the upright fasteners described herein is typically considered to be coupling to the loops. The term loop coupling as used herein refers to the ability of an upright fastener to be mechanically coupled to a loop material. The ability of the hook elements to attach to the loops can be determined and defined by the use of standard woven, non-woven or knitted materials. A region of posts with the coupling protrusions to the

<img file="MX360348B_D0035.tif" />

MIXICAN INSTITUTE

OF THE PROPERTY

INDUSTRIAL loops of the distal ends will generally provide

<img file="MX360348B_D0036.tif" />

—.11 I, | In combination with a loop material, at least one of greater peel strength, greater dynamic cut resistance, or greater dynamic friction than a region of the posts without the protrusions that engage the loops.

The thermoplastic backing may have an essentially uniform cross section, or the thermoplastic backing may have an additional structure beyond that which is provided by the upright fasteners, which may be imparted, for example, by at least one of the forming rollers described above.

In some embodiments, the thickness of the thermoplastic backing in a range of 20 pm to 80 pm is achieved for the mechanical fastener described herein by the empty space of the attachment point between two rollers or the die face and one roller in the process extrusion and casting molding described above. An endless metallic or polymeric band or a polymer coated metal band can be useful to provide uniform pressure at the point of attachment.

In some embodiments, the mechanical fastener according to the present disclosure is made by a method that includes stretching the initially formed thermoplastic backing to achieve a backing thickness in a range of from 20 pm to 80 pm. Stretching can be

<img file="MX360348B_D0037.tif" />

carried out over a network biaxially or monoaxially.

Biaxial stretch means stretching in two different directions in the plane of the thermoplastic backing. Typically, but not always, a first direction is the longitudinal direction L, and a second direction is the width direction W. Biaxial stretching can be performed sequentially by stretching the thermoplastic backing, for example, first in one of the first or second directions and subsequently in the other of the first or second directions. Biaxial stretching can also be performed essentially simultaneously in both directions. Monoaxial stretch refers to stretching only in one direction in the plane of the thermoplastic backing. Typically, monoaxial stretching is performed in either the L or W direction, but other stretching directions are also possible.

In some embodiments, the stretch increases at least or the width (W) of the thermoplastic backing by at least

1.5 times (in some modalities, at least 2, 2.5, or times).

In some embodiments, stretching increases the width (W) length of the thermoplastic backing by at least 1.5 times (in some embodiments, at least 2, 2.5, or 3 times).

In some embodiments, stretching increases at least one length (L) width.

<img file="MX360348B_D0038.tif" />

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY (W) del

<img file="MX360348B_D0039.tif" />

thermoplastic backrest up to 7 or 5 times.

In some embodiments, the stretch increases at least one of length (L) and width (W) of the thermoplastic backing by up to 7 or 5 times. Stretching can be carried out to a degree so that the desired basis weight of the mechanical fastener can be achieved.

In some embodiments, stretching is performed at least at the natural stretch ratio. When a thermoplastic film (eg, a thermoplastic backing as described herein) is monoaxial or biaxially stretched at a temperature below the melting point of the thermoplastic material, particularly at a temperature below the inline stretch temperature of the film, the thermoplastic film can be stretched non-uniformly and a clear boundary is formed between the stretched and non-stretched parts. This phenomenon is termed as neck training or line stretching.

However, substantially the entire thermoplastic backing is uniformly stretched when it is stretched to a sufficiently high degree. The stretch ratio at which this occurs is referred to as the natural stretch ratio or natural pull ratio. The natural stretch ratio can be defined, for example, as the stretch ratio where the

<img file="MX360348B_D0040.tif" />

relative standard deviation of

<img file="MX360348B_D0041.tif" />

The local stretch ratios measured at a varÍ®5SíTcler sites on the thermoplastic backing is below approximately 15 percent. Stretching above the natural stretch ratio tends to provide significantly more uniform properties or characteristics such as thickness, tensile strength, and modulus of elasticity. For any given thermoplastic backing and stretching conditions, the natural stretch ratio is determined by factors such as the composition of the thermoplastic resin that forms the thermoplastic backing, the morphology of the thermoplastic backing formed due to quenching conditions on the tool roll , for example, and the temperature and speed of stretching. In addition, for biaxially stretched thermoplastic backs, the ratio of natural stretch in one direction will be affected by stretching conditions, including the ratio of final stretch, in the other direction. Thus, this can be said to be a natural stretch ratio in one direction, a fixed stretch ratio in the other, or alternatively, a pair of stretch ratios can be said to exist (one in the first direction and another in the second direction) resulting in the natural stretch ratio. The term stretch ratio refers to a

IΜ ΡI

Mexican INSTITUTE

INDUSTRIAL OSUMIOMEDAD proportion of a linear dimension of a portion

<img file="MX360348B_D0042.tif" />

thermoplastic backing after ~ est Tr amiment 'Ί' ”'The linear dimension of the same portion before stretching.

In some embodiments, stretching is performed to a degree below the natural stretch ratio of the thermoplastic backing. In some of these embodiments, the thermoplastic backrest is stretched to a ratio of 1.5 to 4 in one direction (eg, machine direction).

When the thermoplastic backing is a net of indefinite length, for example, the monoaxial stretching in the machine direction can be performed by propelling the thermoplastic net on the rollers of increasing speed. The most versatile stretching method that allows simultaneous monoaxial, sequential biaxial, and biaxial stretching of a thermoplastic network employs a flat film tensioning apparatus. Such an apparatus grips the thermoplastic network using a plurality of clamps, fasteners, or other film edge gripping means along opposite edges of the thermoplastic network in such a way that simultaneous monoaxial, biaxial, or biaxial stretching in the desired direction is obtained by propelling the gripping medium at variable speeds along the diverging rails. Increasing the speed of

<img file="MX360348B_D0043.tif" />

<img file="MX360348B_D0044.tif" />

<img file="MX360348B_D0045.tif" />

INSTITUTE MEXICANO DE LA PROPIEDAD INDUSTRIAL sweeping in the machine direction generally results in stretching in the machine direction. Means such as diverging rails generally result in stretching in the transverse direction. Monoaxial and biaxial stretching can be accomplished, for example, by the methods and apparatus described in United States Patent No. 7,897,078 (Petersen et al.) And the references cited therein. Flat film tensioning apparatus are commercially available, for example, from Brückner Maschinenbau GmbH, Siegsdorf, Germany.

In some embodiments, stretching is performed at elevated temperatures. This can allow the thermoplastic backing to be more flexible for stretching. Heating can be provided, for example, by IR irradiation, hot air treatment, or by stretching in a heat chamber. In some embodiments, heating is only applied to the second surface of the thermoplastic backing (i.e., the surface opposite the first surface from which the upright fasteners protrude) to minimize any damage to the upright fasteners that It may result from heating. For example, in these modes, only the rollers are in contact with the second surface of the

IMPI

<img file="MX360348B_D0046.tif" />

thermoplastic backing are heated.

The initial thickness (is anees to the stretch) of the thermoplastic backing can be up to about 25 0 pm or 150 pm and / or at least about 50 pm, 75 pm, or 100 pm, depending on the desired pull ratio and post thickness -stretch backrest. In some embodiments, the initial thickness of the thermoplastic backing is in a range of from 50 pm to about 225 pm, from about 75 pm to about 200 pm, or from about 75 pm to about 150 pm. After stretching, the thickness of the thermoplastic backing is decreased so that the ratio of the thickness of the thermoplastic backing before stretching to the thickness of the thermoplastic backing after stretching may be, for example, 1.5: 1 to 5: 1, in some embodiments. , from 1.5: 1 to

3: 1. The thickness of the thermoplastic backing after stretching is typically in the range of 2 0 pm to 80 pm and may, in some embodiments, be in the range of 20 pm to 70 pm or 30 pm to 70 pm.

In the modalities, where the mechanical fastener according to the present description is stretched, the backrest

<td>thermoplastic</td><td>has</td><td colspan="2">a molecular orientation</td><td colspan="2">induced</td><td>by</td>

<td>stretching</td><td>in at</td><td>minus one address.</td><td>Yes</td><td>a</td><td colspan="2">back</td>

<td>thermoplastic</td><td>has</td><td>molecular orientation</td><td colspan="2">induced</td><td>by</td><td>the</td>

stretching, this can be determined by analysis

<img file="MX360348B_D0047.tif" />

<img file="MX360348B_D0048.tif" />

standard spectrographic of birefringent properties

<img file="MX360348B_D0049.tif" />

<img file="MX360348B_D0050.tif" />

of the oriented thermoplastic polymer that forms the backrest.

The mechanical fastener having a stretch-induced molecular orientation can also be said to be birefringent, which means that the thermoplastic backing has effective, different refractive indices in different directions. In the present application, if the thermoplastic backing has stretch-induced molecular orientation, this is measured with a delay imaging system available from LotOriel GmbH &amp; Co. , Darmstadt, Germany, under the trade designation LC-PolScope in a microscope available from Leica Microsystems GmbH, Wetzlar, Germany, under the trade designation DMRXE, and a CCD digital color camera available from Qlmaging, Surrey, BC, Canada, under the designation Commercial RETIGA EXi FAST 1394. The microscope is equipped with a 546.5 nm interference filter obtained from Cambridge Research &amp; Instrumentation, Inc., Hopkinton, Mass., and a 10x / 0.25 objective.

Advantageously, a variety of densities of the upright fasteners may be useful for mechanical fasteners in accordance with the present disclosure.

In some embodiments of the mechanical fastener according to the present description, the upright fasteners have a density of at least 248 per square centimeter

<img file="MX360348B_D0051.tif" />

-..... · - ··· (cm²) (1600 per inch

INSTITUTO MEXICANO DE LAPBOWEDAD íHDUSTXLAL square, inch²) and up to approximately

1500 / cm² (10000 / inch²)

1240 / cm² (8000 / inch²) ,

852 / cm² (5500 / inch²) .

In some embodiments, the density of the upright support elements may be in a range of

271 / cm² (1750 / inch²) at about 852 / cm² (5500 / inch²) or

248 / cm² (1600 / inch²) at 542 / cm² (3500 / inch²). In some embodiments, the density of the upright fasteners is approximately

465 / cm² (3000 / inch²). The spacing of the upright fasteners need not be uniform.

In modalities where the thermoplastic backing is stretched, the initial density of the upright fasteners before stretching can be at least 542 / cm² (3500 / inch²), 787 / cm² (5000 / inch²), or 852 / cm² (5500 / inch²) and can be up to 1550 / cm² (10000 / inch²). Stretching can be carried out at the appropriate stretch ratio to achieve the desired density of the upright fasteners.

The density of the upright fasteners and the area of ​​the cap can be used to determine a relative density of the cap on the mechanical fastener described herein. The relative density of the cap, which is sometimes referred to as a ratio between

<img file="MX360348B_D0052.tif" />

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

<img file="MX360348B_D0053.tif" />

dimensions, can affect the feel of the mechanical fastener when the upright fasteners come into contact with the person's skin. The relative density of the cap is a measure of the aggregate area of ​​the cap, divided by the total area of ​​the mechanical fastener. In some embodiments of the mechanical fastener described herein, the relative density of the cap is in the range of 10 percent to 40 percent, and, in some embodiments, 10 percent to 30 percent, 15 percent to 30 percent , or 10 percent to 24 percent.

For any of the modalities of the mechanical fastener according to the present description, the thermoplastic backing can be in the form of a roll, from which the patches of the mechanical fastener can be cut, for example, in an appropriate size for the application desired. In this application, the thermoplastic backing may also be a patch that has been cut to a desired size. In some of these embodiments, the second surface of the thermoplastic backing (i.e., the surface opposite the first surface from which the upright fasteners protrude) may be coated with an adhesive (eg, a pressure sensitive adhesive) . In such embodiments, when the thermoplastic backing is in the form of a roll, a release liner may be applied to the exposed adhesive.

<img file="MX360348B_D0054.tif" />

.-s -ττ ^S1

MEXICAN INSTITUTE ⁵¹ OF INDUSTRIAL PROPERTY

<img file="MX360348B_D0055.tif" />

thermoplastic mechanical bra is not this is initially

In some embodiments of the one described herein, the backrest attached to a carrier, at least when formed. In other embodiments, the second surface of the thermoplastic backing (i.e., the surface opposite the first surface from which the upright fasteners protrude) is attached to a carrier. The thermoplastic backing can be attached to a carrier, eg, by lamination (eg, extrusion lamination), adhesives (eg, pressure sensitive adhesives), or other bonding methods (eg, ultrasonic bonding, compression or superficial union). The thermoplastic backrest can also be attached to a carrier during the formation of the thermoplastic backrest with upright posts. The resulting article may be a fastening laminate, for example, a fastening tab attached to the backsheet of an absorbent article useful for joining the front waist region and the back waist region of an absorbent article.

The carrier, in some modalities, can be attached to the second surface of the thermoplastic backrest, it can be continuous (that is, without holes that penetrate from side to side) or discontinuous (for example, which include perforations that penetrate from side to side ). The wearer may comprise a variety of suitable materials that

<img file="MX360348B_D0056.tif" />

'NSTITVTO MEXICANO

THE PROPERTY

INDUSTRIAL include woven nets, spunbonded nonwoven nets, interlocking nets (eg, spun nets, air laid nets, meltblown nets, and bonded carded nets), textiles, plastic films (eg, coating films single or multilayer, co-extruded films, or films comprising foam layers), and combinations thereof. In some embodiments, the carrier is a fibrous material (eg, a woven, non-woven, or knitted material). The term non-woven when referring to a wearer or a net means that it has a structure of individual fibers or threads that are intertwined, but not in a manner identifiable as a knitted net. Nets or non-woven fabrics can be formed through various processes such as meltblowing processes, yarn bonding processes, interlacing processes and bonded carded net processes. In some embodiments, the carrier comprises multiple layers of nonwoven materials with, for example, at least one layer of the meltblown nonwoven, and at least one layer of a spunbond nonwoven web, or any other suitable combination of non-woven materials. For example, the carrier may be a yarn-bonded melt-bonded-yarn-bonded, yarn-bonded-yarn-bonded, or yarn-bonded-yarn-bonded-yarn-bonded material.

NSTtTOTO MEXICANO

FROM THE PROPtttMD Λ '^J'fNDOSTTJAC

Or, the carrier may be a composite web comprising a nonwoven layer and a dense film layer

Fibrous materials that provide useful carriers can be made from natural fibers (eg, wood or cotton fibers), synthetic fibers (eg, thermoplastic fibers), or a combination of natural and synthetic fibers. Exemplary materials for forming the thermoplastic fibers include polyolefins (eg, polyethylene, polypropylene, polybutylene, ethylene copolymers, propylene copolymers, butylene copolymers, and copolymers and mixtures of these polymers), polyesters, and polyamides. The fibers may also be multi-component fibers, for example, having a core of one thermoplastic material and a shell of another thermoplastic material.

One or more areas of the carrier may comprise one or more elastically extensible materials that extend in at least one direction when a force is applied and return to approximately its original dimension after the force is removed. The term elastic refers to any material that shows recovery from stretching or deformation. Similarly, non-elastic materials, which do not show recovery after stretching or deformation, may also be useful for the wearer.

Mechanical fasteners

IMPI

MEXICAN INSTITUTE OF THE OWN? _ ___ according^DUITEM^ESTUARYis present

<img file="MX360348B_D0057.tif" />

Description are useful components in sri-sbemá3r ~ c [er fastener that include the mechanical fastener according to any of the previous modalities and a loop material. Although mechanical fasteners according to the present description are useful with a variation of different loop materials, in some embodiments, the loop material is a low-trace loop material, which is desirable for use in the fastening system. due to its low cost and low use of material. Examples of low-trace materials include non-woven materials, for example, made from any of the materials described above for carriers.

In some embodiments, the loop material has a fiber basis weight in a range of 10 grams per square meter (gsm) to 30 gsm. The basis weight of the fibers is a basis weight only of the fiber in the loop material (eg, removed from any backing). In some embodiments, the loop material has a fiber basis weight in a range of 10 gsm to 20 gsm or 15 gsm to 20 gsm. In some embodiments, the loop material has a fiber diameter in a range of 15 microns to 25.4 microns. The loop material can have a loop height of up to 500 pm and a loop width of up to 2,500 pm. In some embodiments, the loop material has a basis weight of

<img file="MX360348B_D0058.tif" />

fibers in a range of 20 grams per square meter to 3 0-. grams per square meter, and the mechanical fastener mates with the loop material with a cut resistance of at least 2000 gram-force. However, in other embodiments, mechanical fasteners can be useful with loop materials that have fiber basis weights in a range of 30 gsm to 50 gsm, as well.

The holding laminate that can be formed after bonding the thermoplastic backing to a carrier can be useful, for example, in disposable absorbent articles.

Some examples of absorbent articles have at least one frontal waist region, a posterior waist region, and a longitudinal centerline dissecting the frontal waist region and the posterior waist region, wherein at least one of the frontal waist region. and the posterior waist region comprises the structured surface made according to the method described herein. The fastening laminate may be in the form of a fastening tab that is attached to at least one front waist region or the rear waist region that extends in an outward direction from at least one of the left longitudinal or right edge. length of the absorbent article. In other embodiments, the fastener laminate may be an integral lug portion of the absorbent article.

<img file="MX360348B_D0059.tif" />

IMPI

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

Figure 2 is a schematic perspective view of an embodiment of an absorbent article according to the present description. The absorbent article is a diaper 60 having an essentially watch glass shape. The diaper comprises an absorbent core 63 between a liquid-permeable topsheet 61 that contacts the user's skin and an outward-facing, liquid-impermeable backsheet 62. The diaper 60 has a back waist region 65 having two fastening tabs 70 accommodated at the two longitudinal edges 64a, 64b of the diaper 60. The diaper 60 may comprise an elastic material 69 along at least a portion of the edges longitudinal sides 64a and 64b to provide leg sleeves. The longitudinal direction L of the absorbent article (eg, diaper 60) refers to the direction in which the article extends from the front to the rear of the wearer. Therefore, the longitudinal direction refers to the length of the absorbent article between the rear waist region 65 and the front waist region 66. The lateral direction of the absorbent article (eg, diaper 60) refers to the direction in which the article extends from the left side to the right (or vice versa) side of the wearer (i.e., from longitudinal edge 64a toward the longitudinal edge 64b in the embodiment of Figure 2).

MEXICAN INSTITUTE

OF THE PROPERTY

INDUSTRIAL

In Figure 2, the fastening tabs 70 are secured through their manufacturer end 70a to the rear waist region 65. The fastening tab user's end 70b comprises a mechanical fastener 80 in accordance with the present disclosure.

In some embodiments, when a user's body is attached, the ends

User 0b on the fastening tabs

0 they can be attached to a target area 68 that comprises the fibrous material 72 that can be accommodated on the backsheet 62 of the

66. Examples of the looped front waist region tapes that can be applied to target area 68 to provide exposed fibrous material 72 are described, for example, in US Patent No. 5,389,416 (Mody et al.), in the European Patent EP 0,341,993 (Gorman et al.), and in the European Patent EP 0,539,504 (Becker et al.). In other embodiments, the backsheet 62 comprises a woven or non-woven fibrous layer that is capable of interacting with the user's ends 70b of the fastening tabs 70 that comprise a mechanical fastener described herein. Examples of such backsheets 62 are described, for example, in US Patent Nos. 6, 190,758 (Stopper) and 6,075,179 (McCormack et al.) And described in the Examples, below. Advantageously, with the level of engagement possible with the mechanical fastener according to the present

<img file="MX360348B_D0060.tif" />

<img file="MX360348B_D0061.tif" />

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY description, it may be possible to hook strip 70 and the blade removal of the target area the good subsequent hold between the allowing the

Accordingly, in some embodiments, the disposable absorbent article described herein is free of a target curl landing zone. In some embodiments, at least one of the front waist region or the back waist region comprises a loop material having a fiber basis weight in a range of 10 gsm to 20 gsm.

Although the embodiment illustrated in Figure 2 is an absorbent article with attached fastening tabs, it is considered that the mechanical fastener described herein could be equally useful in absorbent articles with larger hook areas. absorbent article can described mechanical absorbent bra can have two

For example, the lugs by themselves comprise the present, or article, target areas of loop material along the longitudinal edges of the backsheet in a waist region and two hook strips extending thereto. along the longitudinal edges of the absorbent article in the opposite waist region.

Fastener laminates in accordance with the present disclosure may also be useful, for example, as fastener tabs for brief diapers, such as those described in US Patent No.

5,531,732 (Wood).

MEXICAN INSTITUTE OF INDUSTRIAL RROÍIEDAD

In some embodiments, the absorbent article according to the present disclosure is a disposable underpants that have a fibrous outer covering or backsheet that can engage with the upright fasteners on a support tab described herein. The fastening tab may be located on a seam or side panel portion of the free fastening tab that is capable of engaging the fibrous outer sheath or backsheet.

The free end of the holding tab is useful, for example, for adjusting the waist size or circumference of the underpants honeycomb (in other words, the size or waist size) by meeting the side panel portion.

lateral can be free of any

The integrally bonded absorbent core structure panel portion, in some embodiments. In some embodiments, the drawstring diaper has at least one perforation line extending from the waist opening to one of the leg openings. The perforation is generally close to the side seam or joint, may be positioned toward the front portion of the diaper, and may be parallel or non-parallel to the side seam. In some modalities, the boxer style diaper has a pair of perforation lines, one on each side of the diaper. The perforation line (s) may be either broken before the diaper

IMPI ^

MEXICAN INSTITUTE

OF THE IROHEDAt; ν \ »_ ΊΤ3ΜΙ INDUSTRIAL is placed around the user's torso or while the user is wearing the diaper. The free end of the holding tab can then be used to re-secure the diaper so that it is snug around the wearer's waist. The free end of the fastening tab may also be useful, for example, as a means of disposal when the drawstring diaper is removed from the wearer (eg, by tearing off the side panel or perforation line). The holding tab typically remains on the side panel portion. The diaper can then be rolled into a compact shape for disposal, and the holding tab can be used to hold the diaper in a rolled shape.

In some embodiments, a tether tab according to the present disclosure can be applied to a breech-style diaper in a manufacturing process by using a laminate in which the separate strips of the mechanical fastener described herein are laminated to a non-woven net using any of the methods described above. In some embodiments, two straps of the mechanical fastener can be placed on the non-woven net with the non-woven net extending beyond the straps of the mechanical fastener on both sides, such that there are first and second side portions and a central portion of exposed nonwoven material separated by

<img file="MX360348B_D0062.tif" />

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

<img file="MX360348B_D0063.tif" />

laminate mechanical fastener strips. The laminate may be in the form of a roll with the separate mechanical fastener strips extending longitudinally. In an efficient embodiment of the underpants style diaper manufacturing process, the laminate can be cut in the transverse direction to a desired width of a holding tab and aligned with two diapers connected in a diaper frame net. Subsequently, the laminate can be cut in the intermediate part of the central portion of the exposed nonwoven web at or approximately the same time that two connected diapers are cut so that half of the laminate is applied to a diaper and half is applied to the other diaper. Subsequently, if desired, the attachment of the diaper side seams and the attachment of the fastening tab to the side seams can be carried out simultaneously. In these embodiments, each of the first and second exposed web portions can advantageously serve as a finger lift for the left and right fastening tabs of two different underpants.

The fastener laminate including the mechanical fastener described herein may also be useful, for example, for absorbent articles such as sanitary napkins. A sanitary napkin typically includes a backsheet that is intended to be placed adjacent

<img file="MX360348B_D0064.tif" />

to the user's underwear. The backsheet can

<img file="MX360348B_D0065.tif" />

INSTITUTO MEXICANO DE LA PROPERTY INDUSTRIAL comprise a thermoplastic backrest with separate, upright, embedded posts to securely attach the sanitary napkin to the underwear, which is mechanically coupled with the embedded posts. The backsheet can be formed with upright casted posts. In other embodiments, the mechanical fastener may be in the form of a strip or patch that is attached to the backsheet with adhesive or using another bonding mechanism.

In other embodiments, the mechanical fastener according to the present disclosure may be useful, for example, in absorbent pads having at least one topsheet, an absorbent core, and a backsheet, wherein the backsheet comprises the mechanical fastener. The backsheet can be formed with upright casted posts. In other embodiments, the mechanical fastener may be in the form of a strip or patch that is attached to the backsheet with adhesive or using another bonding mechanism. Absorbent pads may be useful, for example, in adult incontinence articles, which may be in the form of an open type diaper having the general shape such as that shown in Figure 2 or a boxer type diaper. In these modalities, the mechanical fastener is useful for

<img file="MX360348B_D0066.tif" />

IMPIOUS?

INSTITUTO MEXICANO deiawomeoad INDUSTRIAL upper sheet of the and proper cut your site while attaching the absorbent pad to the adult incontinence pad, it is useful to keep the pad in the resistance of detachment of the mechanical fastener should be low enough so that the pad it can be easily removed by the user or by the care giver. In other embodiments, absorbent pads including the mechanical bra according to the present disclosure can be directly attached to a user's undergarment for the purpose of urine absorption. It has been conventionally thought that increasing hook density and increasing hook height may be useful in increasing engagement with a loop material (see for example, International Patent Application WO 2006/101844 (Petersen et al.), and such changes tend to increase the basis weight of the mechanical clamping members. It has now been found that mechanical fasteners in accordance with the present disclosure provide surprisingly high shear and peel performance against low trace loop materials despite their low basis weights. As shown in the Examples below, mechanical fasteners according to the present disclosure provide coupling to loop materials, which is comparable to or exceeds that of commercially available hook fasteners.

<img file="MX360348B_D0067.tif" />

IMPI

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY available designed to mate with low trace loop matprialss.

The low basis weight of the mechanical fastener described herein provides the advantages that the fastener is flexible, which decreases the tendency of the mechanical fastener to detach when the mechanical fastening members are twisted. The mechanical fasteners described herein are typically soft (eg, may have a fabric-like feel) and may be less irritating to a user's skin (eg, when the mechanical fastener is over an absorbent article) due to their low basis weight and typically at low thickness. And the mechanical fasteners described herein require less material and are therefore less expensive to manufacture.

A comparison of the softness of the mechanical fastener according to the present description and an exemplary mechanical fastener having a higher basis weight is shown in Example 29 and Illustrative Example 6, below. The mechanical fastener according to the present description as measured by the softness of the loops was significantly less than a mechanical fastener that has a higher base film thickness, and a higher embedded post height.

Inexplicably, the mechanical fastener according to some modalities of the present description had

<img file="MX360348B_D0068.tif" />

<img file="MX360348B_D0069.tif" />

INSTITUTO MEXICANO DELA PROPERTY INDUSTRIAL increased cutting performance, relative to a comparable mechanical fastener that has the same dimensions but with a thicker thermoplastic backing and a higher density of fasteners. For example, a comparison of Illustrative Example 4 and Example 3 and a comparison of Illustrative Example 5 and Example 4 in the following Examples show that shear performance is unexpectedly improved after stretching of the thermoplastic backing and decreasing its thickness even when the density of the upright elements is halved.

The mechanical fasteners according to the present description provide resistance to shear stress, useful for fixing pads for adult incontinence applications. As shown in the Examples, below, for example, Examples 20 to 28, there is a tendency for the peel strength towards a non-woven topsheet material to decrease as the size of the diameter of the cap and cap protrusion decrease. . In some embodiments, in a mechanical fastener useful for pad attachment, the thermoplastic backing has a thickness in a range of 40 pm to 75 pm, and the upright fasteners have a height in a range of 50 pm to 300 pm ( in some modalities, 100

<img file="MX360348B_D0070.tif" />

skullcap

<img file="MX360348B_D0071.tif" />

<img file="MX360348B_D0072.tif" />

<img file="MX360348B_D0073.tif" />

an interval of 19 0 μτη to 320 μτη (in some modalities, 2 00 <img file="MX360348B_D0074.tif" /> μιη to 3 00 μπι, and a cap overhang from an interval of 5 μπι to 65 μπι. For undergarment-style adult incontinence items, the overhang of the cap may be in a range of 5 μπι to 30 μπι (in some modalities, 10 μια to 30 μπι or 15 μτη to 25 μπι) and for undergarment-style adult incontinence articles , the overhang of the cap can be in an interval of 30 pm to 65 pm (in some modalities, 30 pm to 55 pm or 30 pm to 50 pm). For adult incontinence applications, a brief diaper can be applied by a caregiver to a user who may be bedridden. In these applications, the peel strength of the mechanical fastener to hold the absorbent pad on the diaper topsheet may be lower than the peel strength required for a boxer style diaper. Therefore, a lower cap protrusion may be useful, for example, as in Example 23, below. A boxer style diaper can be put on and removed independently by a wearer, who is typically more active than a wearer of a boxer diaper. Due to this increased movement, a higher peel resistance between the absorbent pad and the diaper, and consequently a larger cap protrusion, may be useful for underpants.

<img file="MX360348B_D0075.tif" />

<img file="MX360348B_D0076.tif" />

IMPI

Some Modalities of Description

In a first modality, the presentedéseripeion provides a mechanical fastener comprising:

a thermoplastic backrest; and multiple upright fasteners having a post with a proximal end coupled to the thermoplastic backrest and a distal end comprising a cap larger in area than a cross sectional area of ​​the post, upright where the interval where they have a weight of 25 a Multiple height up to grams bra base per fasteners

300 micrometers, and in mechanics it is in a square meter at 75 grams per square meter.

In a second embodiment, the present disclosure provides a mechanical fastener according to the first embodiment, wherein the cap extends beyond the post on at least two opposite sides of the post.

In a third embodiment, the present disclosure provides a mechanical fastener according to the first or second embodiment, wherein the height of the upright fasteners is at least 100 microns.

In a fourth embodiment, the present disclosure provides a mechanical fastener according to any one of the first to third embodiments, wherein the thermoplastic backing has a thickness of

IMPI

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY an interval

<img file="MX360348B_D0077.tif" />

micrometers to 80 microns.

In a fifth embodiment, the present disclosure provides a mechanical fastener according to any one of the first to fourth embodiments, wherein the cap extends a distance from the protrusion beyond the post, and where the distance from the protrusion is at a micrometer to 85 micron range.

In a sixth embodiment, the present disclosure provides a mechanical fastener according to any one of the first to fifth modalities, where a ratio of the distance of the boss divided by the height is up to 0.6.

In a seventh embodiment, the present disclosure provides a mechanical fastener according to any one of the first to sixth modalities, wherein at least a portion of the post decreases in size from the proximal end to the distal end.

In an eighth embodiment, the present disclosure provides a mechanical fastener according to any one of the first to seventh embodiments, wherein at least a portion of the projection is rotated down toward the thermoplastic backing.

In a ninth embodiment, the present disclosure provides a mechanical fastener according to any of

<img file="MX360348B_D0078.tif" />

fe® the first to eighth modalities, where the elements of

Mexican INSTITUTE ^{one S} OF THE PROPERTY

INDUSTRIAL iife upright fastening are present on the thermoplastic backrest in a density in the range of 248 per square centimeter to 542 per square centimeter.

In a tenth embodiment, the present disclosure provides a fastening system according to any one of the first to ninth embodiments, wherein the thermoplastic backing has a stretch-induced molecular orientation, in at least one direction.

In a eleventh embodiment, the present disclosure provides a clamping system according to any one of the first to eleventh modalities, wherein the upright clamping elements are up to 285 microns in height.

In a twelfth embodiment, the present disclosure provides a fastening system comprising a mechanical fastener according to any one of the first to eleventh embodiments and a loop material for engagement with the mechanical fastener.

In a thirteenth embodiment, the present disclosure provides a fastening system according to the twelfth embodiment, wherein the loop material has a weight of fibers in a range of 10 grams per square meter to 30 grams per square meter.

In a fourteenth modality, the present

<img file="MX360348B_D0079.tif" />

IMPI description provides a fastening system according to the twelfth embodiment, where the loop material has a fiber basis weight in a range of 20 grams per square meter to 30 grams per square meter, and where the mechanical fastener is mates with the loop material with a shear stress resistance of at least 2000 grams force.

In a fifteenth embodiment, the present disclosure provides a fastening system according to any of the twelfth to fourteenth embodiments, wherein the loop material has a fiber diameter in a range of 15 microns to 25 microns.

_? In a sixteenth embodiment, the present disclosure provides an absorbent article comprising the mechanical fastener according to any one of the first to eleventh modalities.

In a seventeenth embodiment, the present disclosure provides an absorbent article according to the seventeenth embodiment, further comprising a front waist region and a rear waist region, wherein at least one of the front waist region and the region back waist comprises mechanical bra.

In an eighteenth embodiment, the present disclosure provides the absorbent article according to

<img file="MX360348B_D0080.tif" />

the seventeenth embodiment, wherein the front waist region comprises a loop material having a fiber basis weight in a range of 10 grams per square meter to 20 grams per square meter.

In a nineteenth embodiment, the present disclosure provides the absorbent article according to the sixteenth embodiment, wherein the absorbent article is an absorbent pad having at least one topsheet, an absorbent core, and a backing sheet, wherein The backing sheet comprises the mechanical fastener according to any of the first to eleventh modalities.

In a twentieth embodiment, the present disclosure provides the absorbent article according to the nineteenth embodiment, wherein the absorbent pad is attached to a diaper topsheet or attached to an undergarment.

In a twenty-first embodiment, the present disclosure provides the absorbent article according to the nineteenth or twenty-second modalities, wherein the thermoplastic backing has a thickness in a range of 40 microns to 75 microns, and where the upright fasteners have a height in a range of 150 microns to 300 microns, a cap range in a range of 190 microns to 320 microns, and a one micron cap protrusion.

<img file="MX360348B_D0081.tif" />

In a twenty-second embodiment, the present disclosure provides the absorbent article according to the sixteenth embodiment, wherein the absorbent article is a drawstring diaper, and wherein the mechanical fastener is located on a tongue over a seam or panel portion side of the brief diaper.

In a twenty-third embodiment, the present disclosure provides the mechanical fastener according to any one of the first to eleventh embodiments, wherein the upright fasteners do not have the combination of all of the following dimensions. A cap thickness of 48 microns, a transverse direction cap diameter of 260 microns, a machine direction cap diameter of 196 microns, a back thickness of 50 microns, a height of 169 microns, a diameter of post at the base of 157 micrometers, and a pole diameter below the cap of 145 micrometers.

In order that this description may be more fully understood, examples are provided. It should be understood that illustrative only, and not limiting of this description, the following these examples describe, they are for purposes to be considered as in no way.

EXAMPLES

Mechanical Holding Strips

The fastening strips

IMPI MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

<img file="MX360348B_D0082.tif" />

mechanics of the

Examples 1-19, Comparative Example 1 (part number CHK-01324 available from 3M Company, St. Paul, MN), and illustrative examples 1-5 were prepared from an ethylene-propylene copolymer available from the Dow Chemical Company, Midland, MI, under the trade designation C700-35N using the method described in Patent et al.).

Eg square elements interval elements of the United States No. 5,845,375 (Miller

The mechanical fastening strips of the

1-19 were accommodated in staggered arrangements and had erect clamping densities that were in

271 fastening strips were prepared

Those at 542 per square centimeter.

mechanical by means of corresponding strips the machine

Eg stretching shoes

Those with densities of 271 / cm² 542 / cm machine stretch² in the direction with one of respectively, the in the stretch ratio of 2: 1.

were prepared by

Eg the direction of the illustrative 4 and of the machine with

5, a shape either conical or rectangular.

Upright fasteners with notched caps were 2: 1 stretch ratio.

The posts were

<img file="MX360348B_D0083.tif" />

^instS '?'? 'Í «' ganü

INDIVIDUAL according to the process described I saw prepared

United States Patent No. 5,868,987 protruding term tKamp, describes caps that were reshaped so that the protruding portions of the distal cap, which were beyond the post, were pushed down toward the backrest (process for reshaping described in the

States Patent

United No.

6,132,660 (Kampfer)).

Ld.

Example mechanical fastening strip

Comparative is also available by removing the commercially available adult honeycomb hooks tab

TENA ULTRA (SCA

Corporation, Stockholm,

The hook strip of the

Comparative Example 2 was obtained by removing the hook tab from the commercially available adult diaper PREVAIL BREEZERS (First Quality Corporation, Great Neck, NY).

Table 1 records the density of upright fasteners (in number per square centimeter), the shape of the cap (round or oval), the shape of the cap (protruding or not protruding), and the appearance of the cap (notched or smooth) for the mechanical fastening strips of Examples 1-19, Comparative Examples (Comp. Ex.) 1-2, and Illustrative Examples (Illustrative Ex.) 1-5.

MEXICAN INSTITUTE

M PROPERTY

Table 1

INDUSTRIAL

<td>Example</td><td>Density (number / cm²)</td><td>Cap Shape (round or oval)</td><td>Skullcap Bulging</td><td>Skullcap Amuescado</td>

<td>Example 1</td><td> 542</td><td>oval</td><td>No</td><td>Yes</td>

<td>Example 2</td><td> 542</td><td>oval</td><td>Yes</td><td>Yes</td>

<td>Example 3</td><td> 271</td><td>oval</td><td>Yes</td><td>Yes</td>

<td>Example 4</td><td> 271</td><td>oval</td><td>Yes</td><td>Yes</td>

<td>Example 5</td><td> 542</td><td>oval</td><td>No</td><td>Yes</td>

<td>Example 6</td><td> 542</td><td>oval</td><td>No</td><td>Yes</td>

<td>Example 7</td><td> 271</td><td>round</td><td>Yes</td><td>not</td>

<td>Example 8</td><td> 542</td><td>oval</td><td>No</td><td>Yes</td>

<td>Example 9</td><td> 542</td><td>oval</td><td>Yes</td><td>Yes</td>

<td>Example 10</td><td> 542</td><td>round</td><td>No</td><td>No</td>

<td>Example 11</td><td> 542</td><td>round</td><td>Yes</td><td>No</td>

<td>Example 12</td><td> 271</td><td>round</td><td>Yes</td><td>No</td>

<td>Example 13</td><td> 542</td><td>round</td><td>No</td><td>No</td>

<td>Example 14</td><td> 542</td><td>round</td><td>Yes</td><td>No</td>

<td>Example 15</td><td> 542</td><td>round</td><td>Yes</td><td>No</td>

<td>Example 16</td><td> 542</td><td>round</td><td>No</td><td>No</td>

<td>Example 17</td><td> 542</td><td>round</td><td>Yes</td><td>No</td>

<td>Example 18</td><td> 542</td><td>oval</td><td>No</td><td>Yes</td>

<td>Example 19</td><td> 542</td><td>oval</td><td>Yes</td><td>Yes</td>

<td>Ex Comp. one</td><td> 248</td><td>oval</td><td>No</td><td>Yes</td>

<td>Ex Comp. 2</td><td> 294</td><td>round</td><td>No</td><td>No</td>

<td>Illustrative example one</td><td> 271</td><td>oval</td><td>Yes</td><td>Yes</td>

<td>Illustrative example</td><td> 271</td><td>oval</td><td>Yes</td><td>Yes</td>

<img file="MX360348B_D0084.tif" />

IMPI

Mexican Institute of Industrial Property

<td> 2</td><td></td><td></td><td></td><td></td><td></td>

<td>Illustrative example 3</td><td> 248</td><td>oval</td><td>Yes</td><td>faith---</td><td></td>

<td>Illustrative example 4</td><td> 542</td><td>oval</td><td>Yes</td><td>Yes</td><td></td>

<td>Illustrative example 5</td><td> 542</td><td>oval</td><td>Yes</td><td>Yes</td><td></td>

In Table 2, the measured values ​​of the cap thickness, the diameter of the cap in the transverse direction (CD), and the diameter of the cap in the machine direction (MD) ) are recorded for the mechanical fastener strips of Examples 1-19, Comparative Examples 1-2, and Illustrative Examples 1-5.

Table 2

<td>Example</td><td>Cap Thickness (pm)</td><td>Diameter of CD cap (p.m)</td><td>Diameter of Cap on the MD (p.m)</td>

<td>Example 1</td><td> 47</td><td> 300</td><td> 200</td>

<td>Example 2</td><td> 48</td><td> 330</td><td> 201</td>

<td>Example 3</td><td> 50</td><td> 291</td><td> 198</td>

<td>Example 4</td><td> 53</td><td> 329</td><td> 228</td>

<td>Example 5</td><td> 31</td><td> 187</td><td> 167</td>

<td>Example 6</td><td> 31</td><td> 207</td><td> 167</td>

<td>Example 7</td><td> 60</td><td> 306</td><td> 318</td>

<td>Example 8</td><td> 48</td><td> 272</td><td> 196</td>

<img file="MX360348B_D0085.tif" />

<img file="MX360348B_D0086.tif" />

<td rowspan="2">Example 9</td><td rowspan="2"> 48</td><td rowspan="2"> 260</td><td> 19.6_</td>

<td></td>

<td>Example 10</td><td> 19</td><td> 164</td><td> 180</td>

<td>Example 11</td><td> 19</td><td> 157</td><td> 180</td>

<td>Example 12</td><td> 64</td><td> 309</td><td> 342</td>

<td>Example 13</td><td> 35</td><td> 197</td><td> 225</td>

<td>Example 14</td><td> 35</td><td> 197</td><td> 225</td>

<td>Example 15</td><td> 32</td><td> 216</td><td> 225</td>

<td>Example 16</td><td> 47</td><td> 269</td><td> 253</td>

<td>Example 17</td><td> 47</td><td> 261</td><td> 253</td>

<td>Example 18</td><td> 57</td><td> 291</td><td> 200</td>

<td>Example 19</td><td> 57</td><td> 304</td><td> 200</td>

<td>Ex Comp. one</td><td> 55</td><td> 350</td><td> 226</td>

<td>Ex Comp. 2</td><td> 35</td><td> 364</td><td> 364</td>

<td>Illustrative example 1</td><td> 50</td><td> 310</td><td> 194</td>

<td>Illustrative example 2</td><td> 53</td><td> 340</td><td> 218</td>

<td>Illustrative example 3</td><td> 65</td><td> 350</td><td> 220</td>

<td>Illustrative example 4</td><td> 57</td><td> 309</td><td> 198</td>

<td>Illustrative example 5</td><td> 54</td><td> 329</td><td> 228</td>

In Table 3, the measured values ​​of the backrest thickness, the height of the post before the socket, the height of the post with cap, the diameter of the post measured at the base (distance w in the

Figure 1), the diameter of the pole measured immediately below the cap (distance w¹ in Figure 1), and the basis weight for the mechanical fastening strips of the

Examples 1-19,

Comparative Examples

1-2, and

Ex emplos

Illustrative 1-5. The height of the capped post is defined

<img file="MX360348B_D0087.tif" />

IMPI MEXICAN INSTITUTE | INDUSTRIAL DILAPROFIRTY as the distance measured from the upper surface of the backrest to the tip of the cap (distance h at

Figure 1).

Table 3

<td>Example</td><td>Back Thickness (pm)</td><td>Post Height before Latching (pm)</td><td>Height of Post with Cap (p.m)</td><td>Diameter of Post on the Base (p.m)</td><td>Diameter of Post below the Cap (pm)</td><td>Weight Base (gsm)</td>

<td>Example 1</td><td> 46</td><td> 350</td><td> 247</td><td> 188</td><td> 178</td><td> 50</td>

<td>Example 2</td><td> 50</td><td> 350</td><td> 219</td><td> 171</td><td> 181</td><td> 55</td>

<td>Example 3</td><td> 50</td><td> 350</td><td> 193</td><td> 170</td><td> 163</td><td> 65</td>

<td>Example 4</td><td> 50</td><td> 350</td><td> 159</td><td> 170</td><td> 165</td><td> 65</td>

<td>Example 5</td><td> 50</td><td> 250</td><td> 189</td><td> 149</td><td> 130</td><td> 55</td>

<td>Example 6</td><td> 50</td><td> 250</td><td> 183</td><td> 146</td><td> 132</td><td> 55</td>

<td>Example 7</td><td> 50</td><td> 350</td><td> 176</td><td> 169</td><td> 163</td><td> 65</td>

<td>Example 8</td><td> 50</td><td> 250</td><td> 169</td><td> 158</td><td> 152</td><td> 55</td>

<td>Example 9</td><td> 50</td><td> 250</td><td> 169</td><td> 157</td><td> 145</td><td> 55</td>

<td>Example 10</td><td> 50</td><td> 250</td><td> 187</td><td> 147</td><td> 138</td><td> 55</td>

<td>Example 11</td><td> 50</td><td> 250</td><td> 203</td><td> 147</td><td> 138</td><td> 56</td>

<td>Example 12</td><td> 50</td><td> 350</td><td> 159</td><td> 171</td><td> 170</td><td> 70</td>

<td>Example 13</td><td> 50</td><td> 250</td><td> 161</td><td> 150</td><td> 140</td><td> 55</td>

<td>Example 14</td><td> 50</td><td> 250</td><td> 161</td><td> 150</td><td> 140</td><td> 55</td>

<td>Example 15</td><td> 50</td><td> 250</td><td> 147</td><td> 141</td><td> 137</td><td> 55</td>

<td>Example 16</td><td> 50</td><td> 250</td><td> 125</td><td> 154</td><td> 153</td><td> 55</td>

<td>Example 17</td><td> 50</td><td> 250</td><td> 117</td><td> 150</td><td> 144</td><td> 55</td>

<td>Example 18</td><td> 50</td><td> 250</td><td> 135</td><td> 159</td><td> 159</td><td> 55</td>

<td>Example 19</td><td> 50</td><td> 250</td><td> 130</td><td> 151</td><td> 151</td><td> 55</td>

<td>Ex Comp.</td><td> 100</td><td> 440</td><td> 386</td><td> 240</td><td> 196</td><td> 105</td>

<img file="MX360348B_D0088.tif" />

<img file="MX360348B_D0089.tif" />

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

<td> 1</td><td></td><td></td><td></td><td></td><td></td><td></td>

<td>Ex Comp. 2</td><td> 100</td><td>Not available</td><td> 184</td><td> 371</td><td> 209</td><td> 120</td>

<td>Eg Hust. one</td><td> 50</td><td> 440</td><td> 350</td><td> 170</td><td> 147</td><td> 72</td>

<td>Eg Hust. 2</td><td> 50</td><td> 440</td><td> 330</td><td> 170</td><td> 155</td><td> 72</td>

<td>Eg Hust. 3</td><td> 100</td><td> 350</td><td> 275</td><td> 240</td><td> 198</td><td> 110</td>

<td>Eg Hust. 4</td><td> 92</td><td> 350</td><td> 239</td><td> 161</td><td> 159</td><td> 100</td>

<td>Eg Hust. 5</td><td> 91</td><td> 350</td><td> 230</td><td> 179</td><td> 173</td><td> 95</td>

In Table 4, the calculated cap overhang, flex index (BI), and relative cap density values ​​are recorded for Examples 1-19, Comparative Examples 1-2, and Illustrative Examples 1-5. The cap protrusion was calculated using the following equation:

Cap Projection (gm) = (Cap Diameter - Post Diameter below Cap) / 2

The flex index (BI) was calculated using the following equation:

BI = Cap Overhang / Post Height with Cap.

For the equation, the diameter of the cap was measured in the longest dimension and the diameter of the post was measured just below the cap.

The relative density of the cap was calculated using the following equation:

<img file="MX360348B_D0090.tif" />

Relative density

MEXICAN INSTITUTE OF CAPITAL jdustuial of the Cap = aggregate area of ​​the cap / area of ​​the mechanical fastener.

Table 4

<td>Example</td><td>Cap overhang (calculated) (pm)</td><td>Flex index (calculated)</td><td>Relative Area of ​​the Cap (calculated)</td>

<td>Example 1</td><td> 61</td><td> 0.25</td><td> 25.5%</td>

<td>Example 2</td><td> 75</td><td> 0.34</td><td> 28.2%</td>

<td>Example 3</td><td> 64</td><td> 0.33</td><td> 12.3%</td>

<td>Example 4</td><td> 82</td><td> 0.52</td><td> 16.0%</td>

<td>Example 5</td><td> 29</td><td> 0.15</td><td> 13.3%</td>

<td>Example 6</td><td> 38</td><td> 0.21</td><td> 14.7%</td>

<td>Example 7</td><td> 72</td><td> 0.41</td><td> 20.7%</td>

<td>Example 8</td><td> 60</td><td> 0.34</td><td> 22.7%</td>

<td>Example 9</td><td> 58</td><td> 0.34</td><td> 21.7%</td>

<td>Example 10</td><td> 13</td><td> 0.07</td><td> 12.6%</td>

<td>Example 11</td><td> 10</td><td> 0.05</td><td> 12.0%</td>

<td>Example 12</td><td> 70</td><td> 0.44</td><td> 22.5%</td>

<td>Example 13</td><td> 29</td><td> 0.18</td><td> 18.9%</td>

<td>Example 14</td><td> 29</td><td> 0.18</td><td> 18.9%</td>

<td>Example 15</td><td> 40</td><td> 0.27</td><td> 20.7%</td>

<td>Example 16</td><td> 58</td><td> 0.46</td><td> 29.0%</td>

<td>Example 17</td><td> 59</td><td> 0.50</td><td> 28.1%</td>

<td>Example 18</td><td> 66</td><td> 0.49</td><td> 24.8%</td>

<td>Example 19</td><td> 77</td><td> 0.59</td><td> 25.9%</td>

<td>Ex Comp. one</td><td> 71</td><td> 0.20</td><td> 15.4%</td>

<td>Ex Comp. 2</td><td> 77</td><td> 0.42</td><td> 30.6%</td>

<td>Illustrative example 1</td><td> 80</td><td> 0.23</td><td> 12.8%</td>

<td>Illustrative example 2</td><td> 95</td><td> 0.29</td><td> 15.8%</td>

IMPI

MEXICAN INSTITUTE OF PROPERTY

<img file="MX360348B_D0091.tif" />

<td>Illustrative example 3</td><td> 78</td><td> 0.28</td><td>INDUSTMAL - W 15.0%</td>

<td>Illustrative example 4</td><td> 74</td><td> 0.31</td><td></td>

<td>Illustrative example 5</td><td> 75</td><td> 0.33</td><td> 31.9%</td>

measurements recorded in Tables 1-5

All were taken using a Keyence VHX-600E microscope equipped with a

VH-Z20R, an amplification interval

20X to 200X, a data acquisition software package (Keyence

Corporation, Osaka, Japan).

Test Method and Test Results

The decoupling performance characteristics of the mechanical fastening strips of the

Examples 1-19,

Comparative Examples 1-2 and Examples

Illustrative 1-5 were determined using the tests for cut resistance and peel strength. All tests were conducted at constant temperature (23 ° C + 2 ° C) and relative humidity (50% + 5%). All materials and equipment were balanced to these conditions for a minimum of 24 hours before the test. A universal constant speed extension tensile test instrument, equipped with a computer for data logging and required load ranges, was used (Series 4200, 4500, or 5500 available from Instron Engineering Corporation, Canton, MA). The instrument crosshead speed was adjusted to 305 mm / minute with a peel distance of at least 32 mm for all

<img file="MX360348B_D0092.tif" />

<img file="MX360348B_D0093.tif" />

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY evidence.

The mechanical fastening strips of the Examples

1-19, Comparative Examples 1-2, and Illustrative Examples 1-5 were evaluated using three different samples of polypropylene nonwoven loops. Sample 1 was a low trace nonwoven loop material obtained from the backing sheet of an adult diaper commercially available from First Quality Corporation, Great Neck, NY under the trade designation PREVAIL BREEZERS. Sample 2 was a low traced nonwoven loop material obtained from the backing sheet of an adult diaper commercially available from SCA Corporation, Stockholm, Sweden under the trade designation TENA ULTRA. Sample 3 was a low trace nonwoven loop material obtained from the backing sheet of an adult diaper commercially available from Medline Industries, Mundelein, IL, under the trade designation RESTORE. In all tests, the outer surface (garment facing side) of the diaper backing sheet was used for coupling for the mechanical fastener samples. In Table 5, the measured values ​​of the fiber diameter, loop height (traced), loop width and fiber basis weight are recorded for samples 1-3 of nonwoven loops.

<img file="MX360348B_D0094.tif" />

Table 5.

Dimensions for Non Woven Samples 1-3

<img file="MX360348B_D0095.tif" />

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

<td>Number of</td><td>Diameter of</td><td>Height of</td><td>Width of</td><td>Base Weight</td>

<td>Shows</td><td>Fiber (μπι)</td><td>Loop</td><td>Loop</td><td>Fibers</td>

<td></td><td></td><td>(μπι)</td><td>(p.m)</td><td>(gsm)</td>

<td>Sample 1</td><td> 19</td><td> 490</td><td> 2450</td><td> 25</td>

<td>Sample 2</td><td> 20</td><td> 390</td><td> 550</td><td> 16</td>

<td>Sample 3</td><td> 20</td><td> 360</td><td> 900</td><td> 14</td>

In Test Method 1, the shear strength of fasteners prepared from the mechanical fastener strips of Examples 1-19, Comparative Examples 1-2, Comparative Examples 1-5 with the nonwoven loop materials of the samples 1-3 was measured according to ASTM D5169-98. The finished mechanical fastener test specimen was prepared as a 12.7 mm cross direction (CD) by a 25.4 mm machine direction (MD) of the strip attached to a 75 mm by 25.4 mm guide of an 898 tape. filaments (available from 3M Company, St. Paul, MN). An additional 76mm by 25.4mm strip of the filament tape was used to cover the exposed adhesive (any remnants were folded onto the strip).

The finished nonwoven loop material was cut to form a 76mm CD by 30mm MD strip which was backed with a 76mm by 30mm strip of 898 filament tape. The sample ex emplar of the placed with on the face

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY mechanical fastener was those of m3.'4 gently fasteners corresponding loops, downward and secured with five cycles (five passes forward a manual roller kilograms. Materials were oriented that resistance measurement to the cut conducted in that of the loops.

docked shows less than five out of 5 mode off

CD of the test specimen and on the

CD

The guide of the upper jaw test specimen while that of the loops was of the instrument a slight amount of clearance.

coupled

Instron, to the jaw allowing a

The initial jaw gap (caliper length) instrument was turned on via j or until the fully

They were taken decoupled and adjusted to 76 mm.

The and the upper jaw specimen eg emplar was from the unit measurements of gram-force (gf).

the sample of loops.

of the maximum load in

The data collected from a minimum of ten replicates, each using reports the average data in Table 6.

the fresh materials were averaged and

<img file="MX360348B_D0096.tif" />

Table 6. Shear Strength with Samples 1-3 as the

Nonwoven Loops Material

<td></td><td colspan="3">Maximum Load (gf)</td>

<td>Example</td><td>Sample 1</td><td>Sample 2</td><td>Sample 3</td>

<td>Example 1</td><td> 1637</td><td> 834</td><td> 667</td>

<td>Example 2</td><td> 1199</td><td> 827</td><td> 560</td>

<td>Example 3</td><td> 2120</td><td> 1445</td><td> 1003</td>

<td>Example 4</td><td> 1377</td><td> 936</td><td> 631</td>

<td>Example 5</td><td> 3027</td><td> 1544</td><td> 1227</td>

<td>Example 6</td><td> 2823</td><td> 1554</td><td> 1168</td>

<td>Example 7</td><td> 2006</td><td> 1333</td><td> 1165</td>

<td>Example 8</td><td> 2080</td><td> 1398</td><td> 1129</td>

<td>Example 9</td><td> 1587</td><td> 1042</td><td> 582</td>

<td>Example 10</td><td> 3037</td><td> 1644</td><td> 1700</td>

<td>Example 11</td><td> 2907</td><td> 1457</td><td> 1761</td>

<td>Example 12</td><td> 1729</td><td> 1227</td><td> 531</td>

<td>Example 13</td><td> 3242</td><td> 1432</td><td> 1058</td>

<td>Example 14</td><td> 2431</td><td> 1467</td><td> 1087</td>

<td>Example 15</td><td> 2407</td><td> 1235</td><td> 863</td>

<td>Example 16</td><td> 1888</td><td> 1261</td><td> 809</td>

<td>Example 17</td><td> 1681</td><td> 1212</td><td> 721</td>

<td>Example 18</td><td> 945</td><td> 1094</td><td> 730</td>

<td>Example 19</td><td> 1430</td><td> 587</td><td> 344</td>

<td>Ex. Comparative 1</td><td> 1483</td><td> 963</td><td> 703</td>

<td>Ex. Comparative 2</td><td> 1818</td><td> 765</td><td> 653</td>

<td>Illustrative example 1</td><td> 1904</td><td> 1063</td><td> 595</td>

<td>Illustrative example 2</td><td> 1602</td><td> 818</td><td> 789</td>

<td>Illustrative example 3</td><td> 1476</td><td> 945</td><td> 380</td>

<td>Illustrative example 4</td><td> 1373</td><td> 858</td><td> 445</td>

<td>Illustrative example 5</td><td> 928</td><td> 839</td><td> 588</td>

In the Test Method force required to detach

IMPI MEXICAN INSTITUTE D £ LA raoWÍDAD

<img file="MX360348B_D0097.tif" />

exemplary mechanics of the loop material are attached to the peel angle of

135 degrees. The mechanical test mount

19, in the tensile tester

Instron went to 135 degrees (stationary).

finished (selected

Ex emplos

Comparatives of

1-2,

The Bra

Examples 1 Examples

Illustrative 1-5) was prepared as a strip of 19 mm CD by 25.4 mm MD with the holding tape used i 1 to be used as the finished backing material. The specimen was attached to a 25.4mm paper guide end by nonwoven loops, finished

Samples 1-3) was coupled with to a 51mm steel plate

203

The material (selected from the double tape by 127 mm on one side

The Exemplary specimen was gently clamped down into corresponding loops on the one-cycle (one cycle one pass with or on the plate backward pass) of an expensive roller, and secured forward and a 2 kilogram manual . Materials were oriented specimen specimen and CD loops.

so that the detachment was conducted in the

CD of

<img file="MX360348B_D0098.tif" />

Table 7.

Peel Strength with Samples 1-3 as the Nonwoven Loop Material

<td></td><td colspan="3">Maximum Load (gf)</td>

<td>Example</td><td>Sample 1</td><td>Sample 2</td><td>Sample 3</td>

<td>Example 1</td><td> 63</td><td> 160</td><td> 120</td>

<td>Example 2</td><td> 73</td><td> 100</td><td> 133</td>

<td>Example 3</td><td> 145</td><td> 146</td><td> 145</td>

<td>Example 4</td><td> 137</td><td> 126</td><td> 137</td>

<td>Example 5</td><td> 93</td><td> 68</td><td> 59</td>

<td>Example 6</td><td> 126</td><td> 86</td><td> 126</td>

<td>Example 7</td><td> 169</td><td> 120</td><td> 169</td>

<td>Example 8</td><td> 120</td><td> 86</td><td> 91</td>

<td>Example 9</td><td> 145</td><td> 104</td><td> 145</td>

<td>Example 10</td><td> 90</td><td> 70</td><td> 90</td>

<td>Example 11</td><td> 58</td><td> 64</td><td> 40</td>

<td>Example 12</td><td> 87</td><td> 120</td><td> 90</td>

<td>Example 13</td><td> 183</td><td> 120</td><td> 53</td>

<td>Example 14</td><td> 133</td><td> 126</td><td> 53</td>

<td>Example 15</td><td> 90</td><td> 117</td><td> 157</td>

<td>Example 16</td><td> 125</td><td> 81</td><td> 55</td>

<td>Example 17</td><td> 154</td><td> 120</td><td> 155</td>

<td>Example 18</td><td> 109</td><td> 116</td><td> 78</td>

<td>Example 19</td><td> 92</td><td> 58</td><td> 92</td>

<td>Ex. Comparative 1</td><td> 108</td><td> 134</td><td> 90</td>

<td>Ex. Comparative 2</td><td> 94</td><td> 116</td><td> 112</td>

<td>Illustrative example 1</td><td> 100</td><td> 130</td><td> 84</td>

<td>Illustrative example 2</td><td> 105</td><td> 186</td><td> 143</td>

<td>Illustrative example 3</td><td> 131</td><td> 95</td><td> 111</td>

<td>Illustrative example 4</td><td> 97</td><td> 61</td><td> 66</td>

<td>Illustrative example 5</td><td> 108</td><td> 95</td><td> 97</td>

<img file="MX360348B_D0099.tif" />

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MEXICAN INSTITUTE

The plate was placed stationary at 135 degrees on the Instron instrument and the paper guide was attached to the upper jaw of the instrument, allowing a slight amount of clearance. The initial jaw clearance (caliper length) was adjusted to at least 203 mm. The instrument was turned on and the measurements were taken from the maximum load (gf). Data collected from a minimum of ten replicates, each using fresh materials, were averaged and the averaged data is reported in Table 7 above.

The mechanical fastening strips of Examples 20 to 28 were prepared according to the method described in Examples 1 to 19. The backrests were not stretched. For each of Examples 20 to 28, the density of the upright fasteners was 248 / cm², and the base weight was 62 grams per square meter. The post height before the socket was 250 microns. The caps of Examples 20 to 28 were cupped according to the process described in US Patent No. 5,868,987 (Kampfer et al.). For Examples 25-28, the caps were also bulged according to the process described in US Patent No. 6,132,660 (Kampfer). Other characteristics of

<img file="MX360348B_D0100.tif" />

<img file="MX360348B_D0101.tif" />

Examples are recorded in the Table

I

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY _____ in Table 8. The following measurements were taken at 175 X amplification using a Keyence microscope

Corporation

Keyence VHX-1000 equipped with a data acquisition software package, a digital interval finder, and a monitor.

The mechanical fastener strips of Examples 28 were evaluated using a spunbond polypropylene, nonwoven, obtained from Mitsui

Chemicals,

Inc., Tokyo,

Japan, under the trade designation

SYNTEX PS-104.

For evaluation of the detachment, a patch of the mechanical fastener (25 mm in the machine direction (MD) and 20 mm in the cross direction (CD)) was attached to one end of a paper guide. The nonwoven (50mm on the MD and 100mm on the CD) was attached with double-sided tape to a metal plate. The mechanical fastener specimen was pressed onto the nonwoven using one cycle (one cycle = one pass forward and one pass backward) with a 100 gram roller. The materials were oriented so that detachment was conducted on the CD of the specimen specimen and on the CD of the nonwoven. The 90 degree peel was measured using an instrument obtained from Orientec Co., Ltd. (Fukaya, Japan), under the trade designation

<img file="MX360348B_D0102.tif" />

mexican institute 11

PROPERTY rbjffíl ·) TENSILON RTG-1225. The initial void space S'e '^' fftandKB ^ a was 150 mm, and a separation speed of 300 mm per minute was used. The evaluation was repeated six times, and the average breakout force was recorded. The results are shown in Table 8 below.

For evaluation of shear stress performance, a patch of the mechanical fastener (25 mm in MD and 20 mm in CD) was attached to one end of a paper guide. The nonwoven (100mm on the MD and 50mm on the CD) was attached with the double-sided tape to a metal plate. The mechanical fastener specimen was pressed onto the nonwoven using one cycle (one cycle = one pass forward and one pass backward) with a 100 gram roller. The materials were oriented so that the measurement was conducted on the CD of the specimen specimen and on the MD of the nonwoven, and the paper guide extended beyond the edge of the nonwoven and metal plate. A weight of ten grams was placed on top of the exemplary specimen, and a weight of 100 grams was attached to the paper guide. If the exemplary specimen did not move within ten seconds, an additional 100 gram weight was attached to the paper guide. This process was repeated until the exemplary specimen began to move within • ΝίΤΠΌΠΟ MEXICAN

OE U INDUSTRIAL PROPERTY ten quantity seconds of weight after adding before adding weight. That of the specimen

<td>copy</td><td colspan="2">began to move was</td><td colspan="2">registered.</td><td>The</td>

<td>evaluation</td><td>It was</td><td>repeated three times, and</td><td>the</td><td>average</td><td>It was</td>

<td>registered</td><td>and</td><td>reported as force</td><td>of</td><td>cut.</td><td>The</td>

Results are shown in Table 8 below.

Example 29 and Illustrative Example 6 were prepared according to the method of Examples 1 to 19.

Example 29 had a density of upright fasteners of 465 / cm² (3000 / inch²) a back thickness of 50 gm, a CD cap diameter of 350 gm, and a cap post height of 140 gm. Illustrative Example 6 had a density of upright fasteners of 140 / cm² (900 / inch²), a back thickness of 110 gm, a CD cap diameter of 520 gm, and a cap post height of 550 gm. Loop stiffness was measured for each of these samples using the following method. A specimen was prepared by cutting the mechanical fastener of Example 29 or Illustrative Example 6 to a strip 10 mm long on CD and 150 mm long on MD. The specimen was placed on a sample holder so that the ends of the strip were flat against the sample holder, and the loop with a circumference of 54 mm was made with the central portion was compressed to a height of

<img file="MX360348B_D0103.tif" />

I<img file="MX360348B_D0104.tif" />PI ^OF 'A'Jí'RreDAD n · J1®UST! UAL, the strip. The espe

<img file="MX360348B_D0105.tif" />

compression moving at 3.5mm per second.

Maximum force was recorded y for Example 29 and found to be 2.5 g / mm from 16.5 g / mm for Example

Illustrative 6.

Table 8

<td>Ex.</td><td>Thickness Of the skullcap (p.m)</td><td>Cap diameter in CD (pm)</td><td>Cap diameter in MD (pm)</td><td>Backing thickness (pm)</td><td>Post height with cap (pm)</td><td>Post diameter at the base (pm)</td><td>Post diameter below the cap (pm)</td><td>Cap overhang (calculated) (pm)</td><td>Bending index (calculated)</td><td>Relative area of ​​the cap (calculated)</td><td>Breakout force 90 degrees (N / 25 mm)</td><td>Cutting force (g / 500 mm²)</td>

<td> 20</td><td> 52</td><td> 337</td><td> 263</td><td> 69</td><td> 205</td><td> 222</td><td> 187</td><td> 75</td><td> 0.37</td><td> 17.3</td><td> 0.050</td><td> 900</td>

<td> 21</td><td> 50</td><td> 370</td><td> 281</td><td> 59</td><td> 176</td><td> 227</td><td> 195</td><td> 88</td><td> 0.50</td><td> 20.3</td><td> 0.076</td><td> 566</td>

<td> 22</td><td> 65</td><td> 414</td><td> 306</td><td> 58</td><td> 167</td><td> 224</td><td> 204</td><td> 105</td><td> 0.63</td><td> 24.7</td><td> 0.059</td><td> 700</td>

<td> 23</td><td> 33</td><td> 210</td><td> 205</td><td> 56</td><td> 249</td><td> 229</td><td> 172</td><td> 19</td><td> 0.08</td><td> 8.39</td><td> 0.0092</td><td> 1166</td>

<td> 24</td><td> 46</td><td> 313</td><td> 244</td><td> 58</td><td> 210</td><td> 226</td><td> 188</td><td> 63</td><td> 0.30</td><td> 14.9</td><td> 0.109</td><td> 766</td>

<td> 25</td><td> 47</td><td> 250</td><td> 230</td><td> 52</td><td> 241</td><td> 238</td><td> 189</td><td> 31</td><td> 0.13</td><td> 11.20</td><td> 0.0517</td><td> 733</td>

<td> 26</td><td> 52</td><td> 296</td><td> 250</td><td> 49</td><td> 216</td><td> 237</td><td> 196</td><td> 50</td><td> 0.23</td><td> 14.41</td><td> 0.0695</td><td> 600</td>

<td> 27</td><td> 53</td><td> 287</td><td> 254</td><td> 57</td><td> 201</td><td> 226</td><td> 185</td><td> 51</td><td> 0.25</td><td> 14.20</td><td> 0.0938</td><td> 500</td>

<td> 28</td><td> 50</td><td> 293</td><td> 254</td><td> 54</td><td> 214</td><td> 229</td><td> 198</td><td> 48</td><td> 0.22</td><td> 14.50</td><td> 0.0637</td><td> 633</td>

This description can adopt various modifications and alterations without departing from its spirit and scope. Consequently, this description is not limited to the previously described modalities, but must be controlled by the limitations described in the following claims and any equivalents of

<img file="MX360348B_D0106.tif" />

the same. This description practiced in the absence of

<img file="MX360348B_D0107.tif" />

any, element not specifically described in it.

All patents and

<td>requests</td><td>of</td><td>patents</td><td>cited</td><td>previously</td><td>are</td>

<td>incorporated</td><td>by</td><td>reference</td><td>in this</td><td>document in</td><td>its</td>

<td>whole.</td><td></td><td></td><td></td><td></td><td></td>

<td>I know</td><td>make</td><td>record that</td><td colspan="2">in relation to this date,</td><td>the</td>

<td>best method</td><td colspan="2">known for the</td><td colspan="2">applicant to carry</td><td>the</td>

<td>practice the</td><td>quoted</td><td>invention,</td><td>is the one</td><td>it is clear from</td><td>the</td>

present description of the invention.

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MEXICAN INSTITUTE OF INDUSTRIAL MIOHEDAD