Method of making shoulder/nozzels with film barrier liners.

(54) Title: METHOD FOR PREPARING SHOULDER NOZZLES WITH FILM BARRIER COATINGS. (54) Title: METHOD OF MAKING SHOULDER / NOZZELS WITH FILM BARRIER LINERS.

(57) Summary

The method comprises an automated technique for making and inserting flexible laminated film barrier coatings into the shoulder nozzles of the tubular product package. The shoulder nozzles are made and oriented with the shoulder opening facing the laminate film. The film is fed to a station that forms the nozzle opening, the die cuts the laminate film to fit on the shoulder of the shoulder nozzle and inserts the laminate film into the shoulder nozzle. The laminate film can be heat bonded to the shoulder nozzle at this station or at a subsequent sealing station. After the shoulder nozzle exits the forming station and inserts the laminate film into the shoulder nozzle, there may be a detection station that determines whether the laminate film is properly aligned on the shoulder nozzle. There may also be a detection station after a subsequent sealing station. The sealed laminated film liner shoulder nozzles are then shipped for tube fabrication. The laminate film will have a polymer layer and a barrier layer comprising ethylene vinyl alcohol copolymers, polyethylene terephthalate polymers, polyethylene naphthalate polymers, and copolymers of acrylonitrile and methyl acrylate. Tubular gaskets produced using these shoulder nozzles are very useful for products that contain flavorings, such as toothpastes.

(57) Abstract

The method comprises an automated technique for making and inserting flexible lamínate film barrier liners into the shoulder / nozzles of product tube packaging. The shoulder / nozzles are made and oriented with the shoulder opening to be facing the lamínate film. The film is fed to a station that forms the nozzle aperture, die cuts the lamínate film to fit into the shoulder of the shoulder / nozzle, and inserts this lamínate film into the shoulder / nozzle. The lamínate film can be heat bonded to the shoulder nozzle at this station or in a subsequent sealing station. After the shoulder / nozzle leaves the station that forms and inserts the lamínate film into the shoulder / nozzle there can be a detection station to determine if the lamínate film is properly aligned in the shoulder / nozzle. There also can be a detection station after a subsequent sealing station. Shoulder / nozzles with sealed lamínate film liner are then sent to tube making. The lamínate film will have a polymer layer and a barrier layer comprising ethylene vinyl alcohol coploymers, polyethylene terephthalate polymers, polyethylene naphthalate polymers and acrylonitrile methyl-acrylate copolymers The tube packages produced using these shoulder / nozzles are very useful for products which contain flavorants, such as dentifrices.

_I KNOW_

SSCRIIARÍA »t BCWMMIA

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Mexican Institute of Industrial Property

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PATENT TITLE NO. 342003

Owner (s): COLGATE-PALMOLIVE COMPANY

Home; 300 Park Avenue, New York, New York, 10022, USA

Name: METHOD FOR PREPARING SHOULDER NOZZLES WITH FILM BARRIER COATINGS.

Classification: lnt.CI.8: B29C63 / 02; B29C65 / 74; B65D35 / 12; B65D35Z20

Inventor (s): DAVID C. HERNANDEZ; CHRISTOPHER J. MILLER

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849

REQUEST

Int filing date June 2008

PRIORITY

.. TO

Country:

US

Validity: Twenty Date of Come;

Date:

June 2008 ehto: June 26, 2028

Number:

12 / 146,127 to reference patent&gt; and granted in articles 1, 2 fraction V, 6 fraction according to the ontada from the right sheet.

luien subscribes the pre: Industrial property (D 6/01/2004, 06/16/2005 iciso a), 4th and 12th frai icle 234 of i

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do with found me of the Federation (D O.

06/05 / 2009,06 / 01/2010, 18i of the Regulations of the Mexican Institute

IMS

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Industrial Property.

Twenty years to keep the Industrial Property Law, the present patent application gives you international application and will be subject

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n extendable, ones lll and 7 ° bis 2 and Law of the I4, 10/25/1996, 12/26/19 7. 05/17/1999, Ό12 and 09/04/2012) are in force; articles, 3rd section V Industrial Property (DOF 12/14/199 amended the Organic Law of the Mexican Institute of Industrial Property (DOF 12/27/1999, amended on 10/10/2002, 07/29/2004, 08/04/2004 and 09/13/2007 ); 1, 3 and 5 Clause a) of the Agreement that delegates powers to the Deputy Directors General, Coordinator, Divisional Directors, Holders of the Regional Offices, Divisional Deputy Directors, Departmental Coordinators and other subordinates of the Mexican Institute of Industrial Property. (DOF 12/15/1999, amended on 02/04/2000, 07/29/2004, 08/04/2004 and 09/13/2007).

Issue Date: September 9, 2016

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UX lar

IMPI

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MEXICAN INSTITUTE OF PROPERTY

INDUSTRIAL __

METHOD FOR DEVELOPING SHOULDER NOZZLES WITH

FILM BARRIER

Field of the Invention

The present invention relates to film barrier coatings for tubular packing shoulder nozzles. Furthermore, the present invention relates to continuous methods for making tube shoulder nozzles with film laminate coatings that prevent the absorption of product components from a packed substance in contact with the shoulder nozzle.

Background of the Invention

The present invention is directed to tubular packages and to a method of making tubular packages to minimize absorption of product components in the tube by tube components. A tubular packing consists of the tubular body, the tube shoulder nozzle and a cap. Absorption of the product components by the tubular body can be minimized by using a tubular laminate structure that includes a barrier such as a metal foil or a plastic film, such as ethylene vinyl alcohol, polyethylene terephthalate, polyethylene or copolymers acrylonitrile and methyl acrylate. The shoulder nozzle consists of a large

Ref. 216082

IMPI

MEXICAN INSTITUTE t) E industrial PROPERTY

<img file="MX342003B_D0009.tif" />

amount of a polymer or copolymer that Liener-a-pl ^ rcTtíilad of alkane groups. Therefore, a barrier is required between the shoulder nozzle and the product in the tube.

The requirement of the barrier has been recognized in the prior art for over 30 years. US Patent No. 4,011,968 describes friction coupling of a barrier insert into the shoulder nozzle of a tube. US Patent No. 3,565,293 and US Patent No. 4,185,757 describe the formation of a shoulder nozzle in and around a barrier insert. In this way, the shoulder nozzle and the barrier insert are basically one piece. In US Patent No. 4,185,757 it is further described that by the time the shoulder nozzle is being formed in and around the barrier nozzle, the shoulder nozzle can be attached to the tubular body. This has many structural and manufacturing advantages. US Patent No. 5,656,346 describes preforming an insert with the insert having a layer of polyethylene and a layer of polyethylene terephthalate or ethylene vinyl alcohol layer. The polyethylene layer will be adjacent to the shoulder nozzle material and will adhere to the shoulder nozzle material and the polyethylene terephthalate layer or ethylene vinyl alcohol layer will be in contact with the product to function as a barrier between the product and the shoulder nozzle. The patent application

IMPI

MBXlCANO INDUSTRIAL PROPERTY INSTITUTE

<img file="MX342003B_D0010.tif" />

No. 2005/0029216 is intended for a preformed insert that has a particular geometry. However, the geometry appears to be described in the aforementioned patents.

Brief Description of the Invention

<td></td><td>The</td><td>Present</td><td>invention is</td><td>directed to use</td><td>of</td>

<td>rolled</td><td>of</td><td>films</td><td>flexible as</td><td>the barrier in</td><td>the</td>

<td>nozzles</td><td>of</td><td>shoulder and</td><td>to a method</td><td>to produce</td><td>the</td>

laminated film coatings and the insertion and sealing of these laminated film coatings in the shoulder nozzles. These laminated film coatings are film laminates that are not preformed to the shape of the shoulder nozzle. These adapt to the shape of the shoulder nozzle after being inserted into the shoulder nozzle and sealed therein. The shape of the shoulder nozzle can vary within certain limits and the same laminated film coating can be used. If the shape of the shoulder nozzle is outside of certain limits, then all that will be needed is a different die cutter to form the nozzle opening and cut the film laminate to the required diameter. This is an easy change of equipment that can be done in minutes. There is also the advantage that less manufacturing equipment is needed when using the film laminate of the present invention instead of the barrier inserts.

IMPI

INSTITUTU MfcXICZNO DE LA PROPERTY

<img file="MX342003B_D0011.tif" />

INDUSTRIAL&gt;

preformed. More specifically, injection molding equipment to make the preformed inserts, hoppers and sorting equipment to hold the preformed inserts, equipment to align the preformed inserts to fit into a preformed shoulder nozzle, or equipment to form the shoulder nozzle of the preformed insert are not required when using the laminated film coating as in the present invention. In the present invention, there is only a need to store rolls of the film laminate material. The net result is a savings in equipment capital cost and savings in manufacturing operations. An effective way of using the film laminate material as the barrier in the tube shoulder nozzles is established.

Methods for making the shoulder nozzles with a barrier for the tube shoulder nozzles comprise forming the tube shoulder nozzle, placing the tube shoulder nozzle on a bracket with the end of the shoulder exposed, laying a film laminate comprising a barrier layer and a polymer layer above the end of the shoulder, the polymer layer facing the shoulder nozzle, contacting the film laminate with a die / mandrel to (i) cut the film laminate to fit the

IMPI

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

<img file="MX342003B_D0012.tif" />

shoulder nozzle, and (ii) insert the film foil into the shoulder nozzle. Cutting the film laminate to fit the shoulder nozzle involves two operations, one is to form a nozzle opening in the film laminate, and the other is to cut the film laminate to a diameter so that it can fit in the shoulder nozzle shoulder. The film laminate cut in the nozzle area is comprised of one of a circular opening, a plurality of grooves and a circular opening, and a plurality of grooves.

The method may comprise a plurality of stations, the die cutting of the film laminate to suit the shoulder nozzle being at one station and the sealing of the film laminate to the shoulder nozzle being at another station. Die cutting the film laminate to fit the shoulder nozzle involves two operations, one is to form a nozzle opening in the film laminate and the other is to cut the film laminate to fit the shoulder from the shoulder nozzle. The film laminate nozzle opening is comprised of one of an opening, generally a circular opening, a plurality of grooves, or an opening with a plurality of peripheral grooves. After the film laminate is inserted into the shoulder nozzle and before sealing the film laminate into the

IM ----

<img file="MX342003B_D0013.tif" />

MEXICAN INSTITUTE

FROM THE 'C' shoulder nozzle, the shoulder nozzles are fed to a detector to determine the placement of the film laminate on the shoulder nozzle. If it is not placed properly, it will be rejected. The film laminate is sealed at the shoulder nozzle by heat bonding the polymer layer of the film laminate to the inner surface of the shoulder nozzle. After the film laminate is sealed in the shoulder nozzle, it is fed to a detector to determine the placement of the sealed film laminate in the shoulder nozzle. If the film laminate is not positioned properly, the shoulder nozzle is rejected. After the film laminate is sealed in the shoulder nozzle, it is fed to be fixed to a tubular body. The tubular body with the attached shoulder nozzle will have a bonded cap, the tube filled with a product, and the corrugated sealed bottom end to close the tubular body. This tubular structure is especially useful for toothpaste products. Products are generally sold in tubes.

In an alternative embodiment, the film laminate may be adhered to the shoulder nozzle at the time the shoulder nozzle is being die cut to form the opening of the nozzle and to fit the shoulder. In the embodiment, the die / mandrel is at a temperature that seals the cut film laminate

IMPI

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

<img file="MX342003B_D0014.tif" />

die cut into the shoulder nozzle after insertion of the die cut film laminate into the shoulder nozzle. The shoulder nozzle, after the film laminate is sealed therein, is fed to a detector to determine the placement of the sealed film laminate on the shoulder nozzle. If it is not placed properly, it will be rejected. The shoulder nozzles are then fed to be attached to a tubular body.

The film laminate has a thickness of about 100 microns to about 400 microns, the barrier layer having a thickness of about 15 microns to about 100 microns and the polymer layer having a thickness of about 75 microns to about 250 microns. A bonding layer that bonds the barrier layer to the polymer layer will be from about 10 microns to about 50 microns thick. The barrier layer of the polymer / barrier laminate film can be any polymeric material that is basically inert to the substances to be packaged in the tube. Useful barrier layers can be selected from polyethylene terephthalate, polytrimethylnaphthalate, polyethylene naphthalate, ethylene vinyl alcohol copolymers, copolymers of acrylonitrile and methyl acrylate, amorphous polyamides, polylactic acid, polyglycolic acid polymers, and polyhydroxy polymers.

<img file="MX342003B_D0015.tif" />

⁸ IMPI

MEXICAN INSTITUTE

Say THE PROPERTY

INDUSTRIAL alkanoate. The polymer of the barrier / polymer film laminate can be any polymer that can adhere to the shoulder plastic. Generally it will be basically the same as the plastic in the shoulder nozzle 10. Preferably, the polymer will contain a fluorescent material. After the film laminate has been inserted into the shoulder of the shoulder nozzle, the film laminate contacts a light source to activate fluorescence in order to determine the position of the film laminate on the shoulder.

Brief Description of the Figures Figure 1 is a plan view of the plan layout design for the equipment that makes the film laminate liners and places them on the shoulder nozzles.

Figure 2 is a side elevation view of the plan layout design of Figure 1.

Figure 3 is a top plan view of a laminated film liner before being inserted or into a shoulder nozzle.

Figure 4 is a top plan view of an alternative laminated film liner before being inserted into a shoulder nozzle.

Figure 5 is a bottom plan view of a shoulder nozzle with a film laminate of Figure 3

IMPI

INSTITUTO MRXtONO Oí LA? RO7! £ PaD INDUSTRIAL

<img file="MX342003B_D0016.tif" />

sealed at the shoulder nozzle.

««! »Ι · ί * &lt;· ι I« Wl »I II i RW

Figure 6A is a side elevation view of the shoulder nozzle with the laminate film of Figure.

Figure 6B is a side elevation view of the shoulder nozzle with the laminate film of Figure.

Figure 7 is a side elevation view of a tube with the shoulder nozzle with the laminate films of the present invention.

Detailed description of the invention

The invention will be described in greater detail in its preferred embodiments with reference to the accompanying figures. Modifications may be made to the modalities described herein, but such modifications will be within the present inventive concept.

Referring to Figures 1 and 2 simultaneously, Figure 1 is a top plan view of the plan layout design for the equipment for making the shoulder nozzles 10 (a) of the present invention and Figure 2 is a side elevation view of the equipment. The equipment and manufacturing method comprise a hopper 12 that supports a plurality of molded shoulder nozzles 10 for tubular gaskets. The shoulder nozzles 10 are transported from the hopper 12 through a conveyor *

IMPI

MEXICAN INSTITUTE !. OE INDUSTRIAL PROPERTY

<img file="MX342003B_D0017.tif" />

towards a sorting and aligning table 14 which is part of a shoulder nozzle unit 15. The sorting and aligning table 14, by vibration and other means, causes the shoulder nozzles 10 to be aligned in a vertical orientation, this it is with the end of the nozzle 13 facing upwards, as seen in Figure 6A.

The oriented shoulder nozzles 10 run through a ramp 16 towards a rotary table 20. The shoulder nozzles 10 exit the rotary table 20 through a row of channels 24. In this view four channels 24 are shown. it is not limited to any particular number of channels 24, however the number of channels 24 may be less than or more than four channels. Six or eight channels 24 would increase the capacity of the equipment. The shoulder nozzles are moved into the channels 24 by gravity feed and the momentum of the lagged shoulder nozzles 10. The shoulder nozzles 10 are held in the channels 24 by means of a rolled edge on the side of each channel 24. The rolled edge functions as a rail to each hold shoulder nozzles 10 in the channels

24. Channels 24 are bent at an obtuse angle for modified alignment. In an inverted U-turn 22, channels 24 undergo a 180-degree change of direction and a new orientation. The shoulder nozzles 10 are inverted in such a way that the end of the nozzle 13 is

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&gt; IMPI

INSTITUTO MEXICANO DE LA FROMEDAP industrial now oriented downwards. The shoulder j · nharas · are held in the channels 24 through and after the U-turn reversed by rolled edges of the channels 24 that function as retaining rails. In section 25 the shoulder nozzles 10 run in an inverted orientation. Shoulder nozzles 10 exit channels 24 in a rotatable forming unit 30 that rotates clockwise. The rotary forming unit 30 has intermittent movement so that work can be performed on the shoulder nozzles 10 at a plurality of stations. Shoulder nozzles 10 are held in slot supports 34 (see Figure 2). Rotary forming unit 30 moves a set of shoulder nozzles 10 to die cutting station 32 (a) where the nozzle opening can be formed as shown in the

Figure 3 or Figure 4. The nozzle opening can also be preformed in the shoulder nozzles 10 before they are loaded into the hopper 12. In such a case, the rotary forming unit 30 will not cause the nozzle opening. Additionally, the illustrated shoulder nozzle assembly 10 includes four shoulder nozzles 10, however, more or less shoulder nozzles 10 may be included in one set.

A roll (not shown) of film laminate 28 is placed near the rotary forming unit 30. The

IMPI

MEXICAN INSTITUTE OF INDUSTRIAL MIOMEDAD

<img file="MX342003B_D0019.tif" />

film laminate 2 8 moves tangentially £ jxt £ --a-_la_ujjüda £ L of rotational formation 30. Film laminate 28 moves above shoulder nozzle 10 so that a section of film laminate 28 can be inserting into each of the shoulder nozzles 10. At die-cutting station 32 (a), an opening is formed in film 28. As seen in Figures 3 and 4, openings 54, 59 formed in section 32 (a) die cut can vary in size and shape. After openings 54, 59 are formed, shoulder nozzles 10 and film laminate 28 with openings 54, 59 are moved to a die / insert station 32 (b). At die / insert station 32 (b), an outer perimeter of film laminate 28 is formed around each nozzle opening by a film cutting operation. The film laminate 28 has now been completely cut so that the fully cut portion can fit the shoulder of the shoulder nozzle 10. The film liner 52 or 56 (shown in Figures 3 and 4), i.e. the laminate film 28 having one of the nozzle openings 54, 59 and cut to fit the shoulder is inserted into the shoulder nozzle 10. A set of shoulder nozzles 10 (a), now with the 52/56 film liner inserted therein, passes through a first quality detection station

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IMPI

INSTtTUT · MEXICAN D £ LA MOPIEDAD INDUSTRIAL

36. At the first quality detection station 36 it is determined whether the film liner 52/56 has been properly inserted into the shoulder nozzle 10 (a). In a preferred configuration, the film laminate 28 will contain a fluorescent material. The function of the fluorescent material is to determine the placement of the film formed on the shoulder nozzles. A wavelength of light is focused on the film overlay 52/56 when it is placed on the shoulder nozzle 10 (a). A sensor in the quality detection station 36 acquires the position of the fluorescence. If the 52/56 film liner has been properly placed, then the shoulder nozzles 10 (a) advance to a heat seal station

38. Otherwise, they are rejected.

In the heat seal station 38, the film liner 52/56 is heated through a heated mandrel (not shown) which enters the inverted shoulder nozzles 10 (a) and adheres the inserted film liner 52/56 to the inner surface of the shoulder nozzle 10 (a). The operating temperature of the heated mandrel is dependent on the materials of the 52/56 film liner and the shoulder nozzle 10. Preferably, the heated mandrel applies heat at a temperature between 149 ° C and 260 ° C for a period of time between 0.4 seconds and 1.5 seconds and more preferably

IMPI ΐΗϊτιτυτσ mf.xícawu tn the «rare industrial between 215 ° C and 24 8 ° C for a period of time between 0.7 seconds and 0.9 seconds. The pressure applied by the heated mandrel to the shoulder nozzle 10 (a) is preferably between 2 bar and 6 bar and, more preferably, between 4.5 bar and 5 bar. However, the invention is not limited to a particular range of applied temperature, time, and pressure, unless specifically specified. After the film coating 52/56 is adhered to the shoulder nozzle 10 (a), the shoulder nozzles 10 (a) then pass through a second quality detection station 40. Again, the Fluorescence of the 52/56 film coating to determine if the 52/56 film coating has been properly inserted into the shoulder nozzle 10 (a). Shoulder nozzles 10 (a) then enter ramp 42. The shoulder nozzles 10 (a) that meet the quality standards determined at the quality detection station 40 go to channel 44. The shoulder nozzles 10 (a) that do not meet the quality standards are ejected through the ramp 46 by means of a burst of air from a discharge of an air jet 43. Shoulder nozzles 10 (a) exiting channel 44 advance to tube fabrication where they are used to make a tube such as tube 60 shown in Figure 7.

Referring now to Figures 3 and 4,

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IMPI

MEXICAN INSTITUTE Dt LA FMOMÍÜAD

INDUSTRIAL

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The film coatings 52, 56 illustrate. The film coatings 52, 56 were formed from the barrier film 28 as explained with reference to Figures 1 and 2. The film coat 52 comprises an opening 54 and a perimeter. 53. Opening 54 is preferably a circular configuration opening having a diameter generally equal to the diameter of the opening of the nozzle of the shoulder nozzle 10. The perimeter 53 of the film liner 52 is a circular opening. Film liner 56 comprises a central opening 59, three grooves 58 and perimeter 57. Central opening 59 is a circular opening that is smaller than the nozzle opening of the shoulder nozzle 10. The three grooves 58 they extend from the opening in a radial direction. Although not illustrated, the film liner can be cut so that it only has grooves and a perimeter without a circular opening.

Figures 6A and 6B show the shoulder nozzle 20 10 (a) comprising one of the film coatings 52,

56. The shoulder nozzle 10 (a) comprises the nozzle 13 and the shoulder 17. The nozzle has the opening 19 and the threads 21 for fixing a cap. In Figure 6A, the film liner 52 is only on the shoulder 17, while in Figure 6B the film liner 56

IMPI

1M3T »MEXICAN PROPERTY TVTO

INDUSTRIAL is on both shoulder 17 and nozzle 13.

<img file="MX342003B_D0023.tif" />

Figure 7 shows a tube 60 with a tubular body 61 and a tube closure corrugation 62. At the other end, there is the shoulder nozzle 10 (a) with the nozzle 13, the shoulder 17, the opening 19 and the threads 21. This tube may have the shoulder nozzle in Figure 6A or 6B.

Shoulder nozzle 10 is generally composed of a polymer such as a polyethylene or a polypropylene, copolymers of ethylene or propylene, including copolymers of ethylene and propylene and copolymers and polymers of vinyl. Tubular body 60 may be comprised of any of the known tubular structures described and / or used in the prior art. Typically, these tubular body structures will be a laminate and will have a barrier layer of sheet metal, polyester, polyamide, or ethylene vinyl alcohol copolymer. The 52/56 film coatings formed from the laminate film 28 will have a two or more layer laminate structure with a layer of polymer on one side to adhere to the inner surface of the shoulder nozzle 10 and a barrier layer on the other side that contacts the product in tube 60. Also, a tie layer can be included that adheres the barrier layer to the polymer layer. In a preferred embodiment, the laminate film 28 will also contain a fluorescent material. The fluorescent material will preferably be

IMPI

ΙΝΤΠΤυΤΟ MEXICANO at LA ΡίΛΊΕΟΑΟ INDUSTRIAL

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in the polymer layer since then it will not be in contact with the product in the tube. The function of the fluorescent material is to determine the placement of the laminate film on the shoulder nozzles. The fluorescent material will be adhered to the polymeric material of the film laminate when this polymer is being made. It must be compatible with the polymer and must be able to adhere to it. Film laminate 28 is from about 100 microns to about 400 microns thick, the barrier layer is from about 15 microns to about 100 microns thick, and the polymer layer is about 75 microns to about 250 microns thick. The bonding layer that attaches the barrier layer to the polymer layer will be from about 10 microns to about 50 microns thick.

The polymer layer of the film laminate 28 may be a polyethylene, a polypropylene, copolymers of ethylene or propylene, including copolymers of ethylene and propylene and copolymers and polymers of vinyl. The polymer layer of the film laminate 28 will be one that can be heat bonded to the shoulder polymer. These will generally be the same since similar polymers will quickly adhere to similar polymers. The fluorescent material will be adhered to the polymeric material of the film laminate 28 when it is being produced.

IMPI «MEXICAN SITE OF INDUSTRIAL MQPIEDAD

<img file="MX342003B_D0025.tif" />

polymer. It must be compatible with the polymer and be able to adhere to it. Useful fluorescent materials include benzoxanthene, benzothiazine, perylene imide, thioxantane, thioindigoid, naphthalimide, and coumarin fluorescent dyes. Various fluorescent dyes that can be used in the polymeric layer of the film laminate are available from DayGlo Color Corporation of Cleveland, Ohio.

<td>The layer</td><td>of</td><td>barrier laminate</td><td colspan="2">movie 28 will be</td><td>a</td>

<td>material</td><td>than</td><td>is basically inert to</td><td>the</td><td>components</td><td>of the</td>

<td>product</td><td>than</td><td>is going to be contained in</td><td colspan="2">The tube. The layer</td><td>of</td>

<td>barrier</td><td colspan="2">it can be such a polyester</td><td>how</td><td>terephthalate</td><td>of</td>

<td colspan="2">polyethylene,</td><td colspan="2">polyethylene naphthalate,</td><td>naphthalate</td><td>of</td>

polytrimethyl, copolymers of ethylene vinyl alcohol, polylactic acid, polyglycolic acid, polyamides such as amorphous (aliphatic and aromatic) polyamides, a metal foil or a copolymer of acrylonitrile and methyl acrylate. The barrier layer may also be an inorganic coating such as SiOx (x 1 to 2) and aluminum oxide, an organic coating such as polyvinyl alcohol based, amorphous carbon based, epoxy amine based polymer nanocomposites. The bonding layer of the film laminate 28 will be a polymer that will adhere to the polymer layer and the barrier layer. Various polymers are useful as the bonding layer. These include ethylene / vinyl acetate copolymers, ethylene and acrylate copolymers

IMPI

ΒΜΪΤηυΤσ MEXICANO

SAY LA KKWEDAO INDUSTRIAL

<img file="MX342003B_D0026.tif" />

of methyl, copolymers of ethylene and butyl acrylate, terpolymers of ethylene / acrylic ester / maleic anhydride and terpolymers of ethylene / vinyl acetate / maleic anhydride. These are link layers that are commercially available. Products that are packed in tubes with this structure are those where the absorption of organic components from the products will adversely affect the product. These include toothpastes and other oral care products, personal care products, and food products.

It is noted that in relation to this date, the best method known by the applicant to put the aforementioned invention into practice, is the one that is clear from the present description of the invention.

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IMPI

INSTITUTO MEXICANO z DE LA, 1'IF.IIAD

NOVELTY OF THE INDUSTRIAL INVENTION

Having described the present invention ^ tOiti ©¹ OT'tedütteT '”STé establishes as novel and, therefore, the content of the following is claimed as property: