Expandable absorbent garment

Expandable absorbent pants and its absorbent body secretions and its preparation device

This creation relates to general absorbent pants, and the special absorbent pants have an expandable absorbent part and a device for manufacturing and using the absorbent pants.

Absorbent pants, especially disposable absorbent pants, include a back sheet, an absorbent retention part, and an upper sheet, or cushion, and the retention area sandwiched between the upper sheet of the back sheet. Some disposable absorbent pants include pleats that fold inward from each back sheet, retention area, and upper sheet. The pleats are arranged to expand like absorbent pants to absorb liquid and also expand along the user's body. In this way, the pleats are arranged on the user's belly button, which can cause pleats in the crotch area of the absorbent pants. Such absorbent pants feel too bulky for the user. In addition, the upper sheet is folded inwardly, which is connected to the user's body, and may contact or bond to the user instead of presenting a continuous, soft surface to the user.

Other absorbent pants only provide a pleated back sheet and/or upper sheet sandwiched between the single-layer reserved area. In this way, the remaining part cannot have additional folds that can hold most of the liquid and thus increase the absorption capacity of the absorbent pants. Correspondingly, the commercial absorbent pants described above cannot provide the required suitable layer, absorption capacity and simple manufacturing.

In a simple state, in one point of view, this creation is applied to absorbent pants including longitudinally extending and outer expandable absorbent composites with opposite ends and opposite side areas. The absorbent composite material includes a back sheet, an upper sheet and a reserved area between the back sheet and the upper sheet. In an optimal embodiment, each back sheet and reserved area contains at least one crease formed along at least a pair of side areas. The crease in the reserved area is the same as the back sheet fold The marks are folded inward. A pair of front body cushions are attached to the opposite side area of the composite material and are adjacent to the opposite end of an absorbent composite material. A pair of back body cushions are attached to the opposite side area and are close to the opposite ends of other absorbent composite materials. A best embodiment, the front and back body cushions are combined to form a pair of body cushions.

Another point of view of this creation is that a kind of absorbent pants includes an expandable back sheet with an opposing side area, a liquid infiltrating upper sheet with an opposing side area, a retention area with opposing edges, and an outer surface area. The reserved area is placed between the upper thin plate and the rear thin plate with the outer surface facing the rear thin plate, and extends the edge of the reserved area with the opposite side of the rear thin plate and the upper thin plate. The opposite side of the upper thin plate is attached to the opposite side of the back thin plate at the opposite side of the reserved area. Preferably, less than 30%, and more preferably less than 10% of the contact between the back sheet and the upper sheet. In addition, it is preferable that less than 30% of the remaining external surface area, and more preferably less than 10% of the external surface, contact the rear sheet. In another better embodiment, it is better to have less than 30% of the internal surface of the reserved area, and it is best that less than 10% of the internal surface is attached to the upper sheet. Preferably, the reserved area is not attached to the back sheet or upper sheet, but swings in it. In another better embodiment, the reserved area contains at least one fold. Preferably, the rear sheet, and even better the rear sheet and the upper sheet, have ears fixed from the leg openings. In this device, the back sheet and the upper sheet are defined as all absorbent pants, except for the need to add body cushions.

Another point of view of this creation is to provide most absorbent pants to absorb bodily fluids. Another point of view is to provide a device for preparing absorbent pants accessories.

This creation provides significant advantages over other absorbent pants and their use and manufacture. For example, in the first point of view, the body cushion attached to the absorbent composite material allows the expansion of the partially absorbent composite material to conform to the users natural body midline. At the same time, it provides a high level of absorption capacity for the crotch, which can be 'Expanded' except for the feeling of being too bulky when dry. In this way, the absorbent composite provides maximum comfort to the user except for unsightly lines on the user's clothing. In addition, absorbent composites can be made of ingredients with individual functions and It is cheaper and can be attached to the body cushion to provide low-cost accessories.

In addition, in another point of view, the reserved area is at least attached to the expandable back sheet and the upper sheet, which allows the reserved portion to expand outward from the user's body to the upper sheet. When allowed to expand, the retention part can increase its surface area and liquid retention volume while allowing the user to feel fit at the same time. In essence, the thin plate allows the remaining part after being expanded, and it is best to extend, extending outwards such as creating a space between the upper thin plate and the side surface of the remaining part of the body. In addition, the upper sheet is preferably not folded inward with the rear sheet or the remaining part to provide neatness and comfort for the user to wear. The minimal attachment of the retention area allows the absorbent pants to become thin and narrow when dry, but allows the retention area to expand from the upper sheet when wet. In this way, absorbent pants provide improved wear and comfort to the user while providing maximum absorption.

The further goals and advantages of this creation will be understood with the description below.

It must be understood that the proper term "longitudinal" is used here, which means the length related to the longitudinal distance, and in particular, moves between the user's front and rear distances. The proper noun "side" is used here and means to be located side-to-side, toward or moving, and specifically, moving from the user's left to the right. Proper nouns "upper", "lower", "inner", "outer" are used here to indicate that the user wears absorbent pants over the crotch, when the proper nouns "inner" and "outer" refer to the centerline of the absorbent pants . For example, the proper nouns "inner" and "upper" refer to the "body edge", which refers to the side closest to the user's body. When the proper nouns "outer" and "bottom" refer to the "trouser side", the side is separated from the use The wearer's body faces the outside of the trousers.

Referring to Figures 1 to 3 B, an absorbent pant consists of a back sheet (2), a front sheet (4) and a retaining part (6) that is placed or clamped in it. The back sheet is preferably liquid-impermeable, but can also be liquid-permeable, such as when used as a barrier layer for the retention layer. For example, a substitute, the back sheet is made of thin plastic film, or other elastic Made of liquid non-permeable material. As used here, the proper term "elastic" means a pliable material that will readily conform to the form and appearance of the general user's body. The back sheet prevents most body fluids and secretions from absorbing pants to wet or soil the bedding or outer pants of most users. In particular, the back sheet includes a film, such as a polyethylene film with a thickness from 0.012 mm to 0.051 mm. In other alternative structures, the back sheet may include a woven or non-woven fabric layer, the treatment and construction of which, in part or all, gives the desired liquid-impermeable layer to the selected area, which is the connection or similar absorption retention area . For example, the back sheet may include a gas-permeable layer, and the non-woven fabric layer is laminated to a polymeric film layer that may or may not allow gas to pass through. As an example of other fabrics, the cotton-like touch-feel sheet material may include a stretched thinner or stretched thermal sheet material including 0.6 mil (0.015 mm) thick polypropylene and/or polyethylene model film and a 0.7 oz/ Square yard (23.8 grams) of polypropylene spindle material (2 denier fibers). This type of material can be trademarked as HUGGIES by Jinbaili Krachong Company<img file="TWM247185U_D0001.tif" /> Purchased from Ultratrim Disposable Diaper. Thick flakes (2) are traditionally provided as a jacket for objects. Optionally, however, the object may include an object constituted by a separate jacket attached to the rear sheet. The back sheet and the outer cover can be optionally made of stretchable, elastic materials, where the proper term "elastic" means that it can be restored to its original size and shape after being deformed and/or showing recovery force.

The back sheet may contain inherent water vapor permeable materials or micropores, and "breathable" materials are permeable to gases, such as water vapor, that are removed from the absorbent pant when preventing liquid excrement from passing through the back sheet. For example, the breathable backsheet may include a microporous polymeric film or a non-woven fabric or other modifications to give the desired liquid permeable layer. For example, a suitable microporous film can be PMP-1 material, which can be purchased from Mitsui Toatsu Chemicals Inc., Tokyo, Japan; or XKO-8044 polyolefin film from 3M Company of Minneapolis, Minnesota. After that, the sheet also had reliefs or provided a totem or matte to display a satisfactory pattern.

Most of the structures in this creation, such as the rear sheet (2), are installed to allow gas to pass through when there is a barrier and restrict the penetration of water-like liquids. The liquid barrier structure may include a hydrogen end that can support the selected water except for loss. A suitable technique to determine the material's resistance to liquid penetration is Federal Test Method Standard FTM 191 method 5514, 1978 or equivalent.

In a good embodiment, the fully impermeable and water-permeable material of the rear sheet (2) generally provides materials that are not good for fecal leakage, such as secretions, including urine and feces in the example. For example, the back sheet can support at least about 45 cm of hydrogen bond ends except for loss. The back sheet (2) can replace at least about 55 cm of the hydrogen bond end, and optionally, at least about 60 cm or more of the hydrogen bond end, providing improved benefits.

The back sheet (2) is preferably expandable, which refers to the ability to extend, and it provides a selective degree of extension when the object is used for tension. The back sheet preferably has the ability to provide selective permanent deformation when the object is subjected to a tension test and then allowed to relax for a period of time after the tension has moved. The best permanent deformation is permanent deformation. Choose the extension and it is best to continue the deformation along the side of the pants, although it must be understood that it is also related to the longitudinal direction or both. A better embodiment, when the object bears a tension of 11.8 g/cm, the back sheet is capable of providing an extension of at least one centimeter, and when the object has a tension of 19.70 g/cm, it further provides at least 20% penetration structure, And then allow to relax the practical pressure below 0 within 1 minute. Most stretchable materials are described in U.S. Patent S/N 09/249434, February 12, 1999, under the title "Extensible Covering Absorbent Pants", which is disclosed herein and incorporated by reference.

For example, the extensible back sheet can constitute a neck fabric, a mou-shaped fabric, a micro-pleated fabric, a polymer film or the like, and it is best to be combined here. The fabric can be woven and non-woven materials, such as spindle fabrics. An example of a suitable extendable material is a 60% neck-shaped, polypropylene spindle with a basis weight of about 1.2 ounces. The neck-shaped, polypropylene spindle is disclosed in U.S. Patent No. 4,965,122.

The upper sheet (4) appears on the surface of the body to be compliant, soft to the touch, and does not irritate the wearer's skin. Further, the upper sheet (4) can have fewer hydrophilic ends than the retained portion (6), and has sufficient porosity to allow liquid to penetrate, allowing the liquid to pass through its thickness to reach the retention area. A suitable upper sheet layer (4) can be made of multiple selective mesh materials, such as porous foam materials, reticulated foam materials, porous plastic films, natural fibers (for example, wood pulp or cotton fibers), synthetic fibers (For example, polyester or polypropylene fibers), or a combination of natural and synthetic fibers. The upper sheet layer (4) is used to help isolate the wearer's skin from the liquid remaining in the retention area.

Most woven and non-woven fabrics can be used on the upper sheet (4). For example, the upper sheet may be composed of thermally blown or spindle fabric fibers, and may be a bonded cardboard mesh. Most fabrics are composed of natural fibers, synthetic fibers, or combinations.

For the purpose of this specification, the proper term "nonwoven mesh" means that the mesh fabric material is made by the process of weaving and weaving. The proper noun "fabric" refers to all fabrics, woven and non-woven fabrics.

The upper sheet fabric may contain hydrophilic materials and these hydrophilic materials are optionally treated with surfactants or other steps to give the required wettability and hydrophilic layer. In a special embodiment of this creation, the upper sheet (4) is a non-woven, spindle-shaped polypropylene fabric, which contains fibers of about 2.8 to 3.2 deniers to form a fabric with a basis weight of 22 grams and a density of 0.06 grams/cc. This fabric can be surface-treated with any surface active agent, such as 0.28% Triton X-102 surface active agent. Surfactants can be used in common methods such as spraying, printing, brushing, or similar methods.

In most embodiments, as described below, the upper sheet can be made of an elastic material, as described above with respect to the rear sheet. The reserved part (6) can be any absorbent material, when the user uses it to absorb liquid secretion or exposure, It tends to grow or expand. For example, the absorbent material consists of an air-exhaust type, and an air-exhaust type is composed of synthetic fibers and superabsorbent fibers, such as superabsorbents. The superabsorbent is generally made of polyacrylic acid, such as FAVOR 880 available from Stockhausen Inc., Greensboro, North Carolina. This fiber can be fluff pulp material' such as Alliance CR-1654, or any cross-linked combination with pulp, hardwood, softwood, and synthetic fiber. Air-recumbent and water-recumbent structures generally contain a binding agent, which is used for stabilizing the structure. In addition, most foam materials,'absorbent films, and superabsorbent fabrics can be used as absorbent materials.

A good specific absorbent material is made of a highly integrated fabric absorbent material, which is contained in an air-bed absorbent body made of thermoplastic plastic fibers, such as pulp, bi-component bonding fibers, and superabsorbents, which are in the folding area Has a higher density. Higher density and smaller capillary size in this area provide better capillarity for promoting liquid. The better capillary phenomenon, in turn, promotes higher utilization of the absorbent material and tends to produce more uniform expansion on the absorbent material as it absorbs liquid.

Most wettable, hydrophilic fabric material forms can be used to form the absorbent body component and part of the retention area (6). Examples of suitable fibers include naturally occurring organic fibers composed of essentially wettable materials, such as cellulose fibers; synthetic fibers include cellulose or cellulose derivatives, such as man-made fibers; inorganic fibers include inherently wettable materials, such as glass fibers. ; Synthetic fibers made of natural wettable thermoplastic polymers, such as special polyester or polyamine fibers; and synthetic fibers made of non-wetting thermoplastic polymers, such as polypropylene fibers, which have a hydrophilic meaning . The fiber can be hydrophilic, for example, treated with silicone to treat a material so that it is suitable for the hydrophilic part and cannot be removed from the fiber immediately, or with a non-wetting covering that has a hydrophilic polymer before or after the fiber is formed The hydrophobic fiber. For the purpose of this creation, carefully consider choosing to mix most of the fiber types mentioned above.

As used here, the proper term "hydrophilic" describes that the fiber or fiber surface can be made of water-like liquid Touch the fiber to make it wet. The degree of material wetting, in turn, is described as the angle of contact and the surface tension of the liquid and the material. Equipment and technology suitable for measuring the wettability of special fiber materials or combined fiber materials can be provided by Cahn SFA-222 Surface Force Analyzer System or similar systems. When measured with this system, the fiber has a contact angle of less than 90° and is named "wetability", and when the fiber has a contact angle of more than 90°, it is named "non-wetting".

In the partial arrangement, the remaining part (6) of the absorbent body can contain a mixture of superabsorbent hydrogel combined particles and synthetic polymer thermally blown fiber, or a fabric consistent material containing a blend of natural fibers and/or synthetic polymer fibers Superabsorbent particle mixture. The superabsorbent particles are mixed homogeneously with the hydrophilic material, or may be mixed non-uniformly. For example, the concentration of superabsorbent particles is located in the non-step direction obliquely across the thickness of the absorber structure (Z-direction), with a lower concentration of the body while absorbing the composite material and a higher concentration toward the outside of the absorber structure. A suitable Z-tilt structure is described in U.S. Patent No. 4,698,823, Kellenberger et al. on October 13, 1987, and the entire disclosure is hereby incorporated in this description in a consistent (non-conflicting) manner. Optionally, the concentration of superabsorbent particles may be arranged in a non-step direction oblique, passing through the substantial part of the absorber structure thickness (Z direction), accompanied by a higher concentration of the body side absorption composite material and relatively low The concentration is towards the outside of the absorber structure. The superabsorbent particles are arranged in a generally discontinuous layer within the hydrophilic fiber base. In addition, two or more different forms of superabsorbents can be selected to be located within the fiber or at different locations along the fiber.

The superabsorbent material may include absorbent gelling materials such as superabsorbents. Absorbent gel materials can be natural, synthetic or modified natural polymers and materials. In addition, the absorbent gel material can be an inorganic material, such as silicone, or an organic compound, such as a cross-linked polymer. The proper term "crosslinked" is any meaning that a water-soluble material that is actually normal is generally insoluble but swellable. These meanings can include, for example, material entanglement, crystallization area, covalent Bonding, ionic complex and bonding. Hydrophilic bonding, such as hydrogen bonding and hydrophobic bonding or Van der Waals force.

Examples of synthetic absorbent gelling polymers include alkali metals and poly(acrylic acid) aluminum salts and poly(methacrylic acid), poly(acrylamine), poly(vinyl ester), vinyl ester and α-olefin malic anhydride copolymers, Poly (ethylene than each cuprous), poly (vinylmorphine), poly (vinyl alcohol), and blends and copolymers. Further suitable polymers for absorbing composite materials include natural and natural modified polymers, such as hydrolyzed ethylene nitrous acid bound starch, ethylene acid bound starch, methyl cellulose, chitin, carbon methyl cellulose, hydroxyl propyl Cellulose and natural gums, such as algin, xanthan gum, locust peas gum and the like. Mixing natural and all or part of synthetic absorbent polymers can be used in this creation. Other suitable absorbent colloidal materials are disclosed in Assarsson et al., U.S. Patent No. 3,901,236, August 26, 1975. The process of preparing the synthetic absorbent polymer is disclosed in U.S. Patent No. 4,076,663, Masuda et al. on February 28, 1978, and U.S. Patent No. 4,280,082, Tsubakimoto et al. on August 25, 1981.

As mentioned earlier, highly absorbent materials used in absorbent bodies are generally formed of discontinuous particles. The particles can be of any desired shape, for example, spiral or semi-spiral, three-dimensional, circular, etc. Shapes that have a large maximum size/minimum size ratio, such as needles, flakes, and fibers, are also used here. Particle aggregates of absorbent colloidal materials are also used in absorbents. The particles required to be used have an average size of 20 microns to 1 mm.

Hydrophilic fibers and highly absorbent particles are assembled to form a composite material with an average basis weight in the range of 50 to 1500 grams. According to some viewpoints of this creation, the average composite species is in the range of 200 to 1200 grams, and optionally in the range of 500 to 800 grams to provide the required functions. Furthermore, part of the highly absorbent particles range from 0 to 100%, and part of the fabric material ranges from 0 to 100%. In addition, highly absorbent fibers such as Oasis 121 and 122 type superabsorbent fibers are purchased from Technical Absorbent Ltd., Grimsby, Lincolnshire, United Kingdom.

It must be understood that the absorbent pants further include most winding sheets, corrugated layers and other known ingredients and are used in absorbent pants.

Referring to the first to third figures B, the back sheet (2) and the upper sheet (4) preferably extend the longitudinal direction and the side edges and define the length and width of the absorbent pants. In another embodiment, this absorbent pant contains most waist elastics or body cushions or other components fixed to the ends of the back sheet and the upper sheet. Each of the back sheet and the upper sheet has an ear part (8) extending laterally from each end of the absorbent pants, and a concave peripheral edge (10) extends between the ear parts (8). Preferably, the elastic material (12) is fixed along the peripheral edge. The elastic material preferably forms a cushion for the user's feet. The elastic material can also be fixed along the elastic zone of the waist of the absorbent trousers.

Preferably, in this embodiment, the back sheet and the upper sheet are combined, with the reserved area arranged therein, to form the interior of the absorbent pants, or to define the shape of the absorbent pants or plan the surface area, except for the need for additional body padding. Of course, it must be understood that the other layers, including the outer covering layer, must be fixed or sandwiched between the back sheet and the upper sheet. The fastener label (14) is attached to and extends from the opposite end side of the back of one end of the absorbent pants. This fastener label contains hooks and/or loops, such as VELCRO<img file="TWM247185U_D0002.tif" />The fastener system may have adhesives or other bonding agents applied to the surface. Alternatively, the fastener label may contain buttons, sheets, straps, or other known fastener devices. When the absorbent pants are fixed to the user, the fasteners (14) are fixed to the ears (8) at the edge end (16) of the absorbent pants or connected to the ears (8) at the opposite end (18) of the absorbent pants. The opening is formed on each side of the absorbent pants along the concave peripheral edge (10) and is shaped by the user's legs.

It must be understood that the ears can alternatively be fixed to form edge joints along their respective outer edges (20). Among them, the absorbent pants are installed as if the user slides in and out of the body through the leg openings.

As shown in Figures 1 to 3B, the longitudinally extending retaining portion (6) preferably does not extend the full length of the absorbent pants.

Referring to the first picture A, the rear sheet (2) is preferably extensible. The outer peripheral edge (32) of the rear sheet is fixed to the upper sheet (4) along its outer peripheral edge (34), so that the rear sheet is attached to the upper sheet at a minimum. The best embodiment is to only follow the outer edge (32) of the edge part, (34) is attached between the back sheet (2) and the upper sheet (4). Of course, it must be understood that the back sheet and the upper sheet can be minimally attached along other areas, for example, along the end of absorbent pants. The minimum attachment that allows the expandable back sheet to extend outward from the user's body is limited by the upper sheet as the retention area swells after absorbing most body fluids and secretions. The back sheet and the upper sheet can be combined by bonding agent or adhesive, sonic bonding, thermal bonding, nailing, embroidery or any known bonding technology, as bonding, to do the minimum adsorption. Preferably, the adsorption area is less than 30% of the area of the rear sheet (2) or the upper sheet (4), and preferably less than 20% of the area of the rear sheet (2) or the upper sheet (4), and more preferably smaller than the rear sheet (4) (2) or 10% of the area of the upper sheet (4). For the best embodiment as shown in Figures 1 to 1B, the reserved area (6) is preferably not attached to the back sheet or the upper sheet, but only sandwiched in a free-flowing arrangement.

Referring to the first figure B, the absorbent pants further include a barrier layer (36) fixed on the edge (38) from the user's body to the reserved area, wherein the barrier layer is regarded as part of the reserved area. Likewise, it must be understood that the retention area also contains other layers, fixed to one or both of the body edge or the outer hem of the absorbent material, including by way of example but not limited to most thin fabrics, barriers or corrugated layers. The barrier layer (36) is preferably liquid impermeable and can be made of the same material as the back sheet described above. Preferably, the barrier layer (36) extends along the longitudinal and lateral directions of the reserved area.

Refer to the second and second A pictures, which show a replacement embodiment of absorbent pants. In this embodiment, the outer edge or bottom edge (38) of the reserved area (6), or the outer edge of the user's body toward the trousers edge, is the lowest bottom line of the sheet (2) after contact. Preferably, the reserved area (6) is attached along the longitudinal position (42), and even better is the area along the reserved area (6). Midline or Central District. The upper sheet (4) and the rear sheet (2) can also be attached. Preferably, the percentage of attachment area shown above includes the end of the retention area (6) along the longitudinal extent (42). Preferably, the longitudinally extending central adsorption area is less than 30% of the surface area of the outer surface of the reserved area, and further preferably less than 30% of the side width of the reserved area. In a better embodiment, the adsorption area is less than 20%, and preferably less than 10%, the surface area of the outer surface of the retention area, and further less than 20%, and better less than 10%, the side width of the retention area .

The retention area is best to be adsorbed to the back sheet with bonding agent or adhesive, sonic bonding, thermal bonding, nailing, embroidery or any known adsorption technology skills, just like bonding. As shown in the second figure B, the barrier layer (36) can be fixed to the bottom edge (38) of the reserved area (6), so that the barrier layer (36) has a lower surface (48) attached to the body edge of the back sheet (2) Surface (44). It is better to have the above-mentioned adsorption area percentage. The retention area (6) is adsorbed to the back sheet (2) allowing the retention area (6) to extend from the upper sheet (4) away from the back sheet (2), thus creating a gap between the upper sheet (4) and the retention area (6) space.

Referring to the third and third A pictures, another alternative embodiment of absorbent pants, the bottom edge (38)' of the reserved area or the outer facing edge from the user's body, is adsorbed to the back sheet (2), as described above , And the upper edge (40), or the body edge surface of the reserved area is adsorbed to the bottom surface (46) of the upper sheet (4). Preferably, the upper sheet (4) is extendable, which can be pulled away from the user's body. The extensible upper sheet is preferably made of the above-mentioned extensible material. Preferably, the reserved area (6) is adsorbed to the rear sheet and the upper sheet along the longitudinally extending position (42), and more preferably, along the center line of the reserved area on the upper and lower edges (38), (40). Preferably, the longitudinally extending central adsorption area is 30% of the small overdue internal surface area between the reserved area and the upper sheet and the body edge surface of the reserved area, and further the width of the side of the reserved area is less than 30%. In a better embodiment, the adsorption area is less than 20%, and preferably less than 10% of the surface area of the internal surface of the retention area, and further preferably less than 20%, and more preferably Less than 10% of the side width of the reserved area.

The retention area (6) is best to use bonding agent or adhesive, sonic bonding, thermal bonding, nailing, embroidery or any known adsorbent technical skills, to be adsorbed to the back sheet and the upper sheet just like bonding. As shown in Figure 3B, a barrier layer (36) can be fixed on the bottom edge of the reserved area (6), which can be regarded as a part of the reserved area, accompanied by the bottom surface (48) and the barrier layer (36) adsorbed to the rear The body edge surface of the sheet (44). The retention area (6) is adsorbed to the rear sheet (2) and the upper sheet (4) to allow the retention area (6) to extend outward to pull the upper sheet (4) and the lower sheet (2) away from the user's body, so that the upper sheet and Create a space between the user's body.

Referring to Figures 4 and 4A, another embodiment of the absorbent pants shows if it contains an extensible retention area ( 50). Most other folds of the reserved area, the structure of the laminate is disclosed and described in US Patent Application Serial No. 09/855,182, entitled Absorbent Pants with Extensible Absorbent Material, and was filed on the same day as this creation, and the interior is disclosed here and incorporated References. The proper term "extensible" is used here to mean increasing or increasing the range or area, such as by folding. The outer peripheral edge (60) of the uppermost fold is adsorbed to the upper sheet along the length of the reserved area. The folding (58) between the openings (64) and the inner folding edge (62) of (56) allow most body fluids to be captured and absorbed by the retention area (50). Preferably, the retention area (50) is adsorbed to the upper sheet (4) like a bond by bonding agent or adhesive, sonic bonding, thermal bonding, nails, embroidery or any known adsorption technology. The folded retention area (50) provides additional surface area capable of absorbing most body fluids and secretions. Preferably, the retention area (50) is not directly adsorbed to the back sheet (2), so that the retention area can move freely relative to the back sheet (2). If the absorbent pants receive body secretions, the retention area (50) extends outward from the user's body and the extensible sheet (2), thus increasing the empty volume in addition to having an effect on the position of the upper sheet relative to the body. Preferably, the upper sheet (4) does not have any folds and is not folded inward to any of the reserved areas of the rear sheet, but it is better to keep it The user's body is flat again as to provide a comfortable and clean position.

Referring to the fourth figure B, the barrier layer (66) is arranged between the reserved area (50) and the back sheet (2). The barrier layer (66) includes side edges (68) wrapped around it or can be folded inwardly with the folds (56) and (58) of the back sheet (2) and the retention area (50). The barrier layer (66) may contact the retention layer (50), and thus be regarded as the retention layer or the back sheet (2), or the part that can move freely therebetween.

Refer to Figures 5 and 5A, showing an alternative embodiment of absorbent pants. In this embodiment, the bottom edge (70) of the reserved area (50), or the edge facing outward from the user's body, is further adsorbed to the back sheet. Preferably, the retention area is adsorbed along the longitudinal area (42), and more particularly along the central area (42) or the center line of the retention area. Preferably, the longitudinally extending central adsorption area is less than the outer surface area, the hem of the reserved area, or the side of the reserved area (50), 30% of the unfolded width. To be more specific, the adsorption area is less than 20%, and preferably less than 10% of the outer surface area of the reserved area, or the sides of the reserved area, unfolded width.

The reserved area (50) is preferably adsorbed onto the back sheet (2) by bonding agent or adhesive, sonic bonding, thermal bonding, nailing, embroidery or any known adsorption technology, like bonding. As shown in Figure 5B, the barrier layer (66) can be fixed to the bottom surface (70) of the reserved area (50), which is regarded as part of the reserved area, and the barrier layer (66) with the bottom surface (72) is adsorbed to the rear The body edge surface (44) of the sheet (2). The adsorption of the retention area to the back sheet allows the retention area (50) and the extendable back sheet (2) to extend outward from the upper sheet (4), creating a space between the upper sheet (4) and the retention area (50).

Referring to Figures 6 and 6A, another alternative embodiment of absorbent pants, the bottom edge (70) of the reserved area (50), or away from the user's body edge facing the edge, and absorbed to the back sheet and upper part The edge (74), or the body edge surface of the reserved area (50) is adsorbed to the bottom surface of the upper sheet. Preferably, the upper sheet is extendable so that it can be pulled away from the user's body. Preferably, after the reserved area (50) is in contact along the longitudinal extension area (42) The flakes (2) and the upper flakes (4), and better yet, are relative to the edge of the reserve area along the middle line of the upper and lower edges of the reserve area. Preferably, the longitudinally extending central adsorption area on each side of the reserved area is less than 30%, or alternatively less than 20% or preferably less than 10% of the inner and body side surface area, and less than 30%, or less than 20% per gram replacement Or preferably less than 10% of the unfolded width of the outer, reserved area hem surface area or the side edges of the reserved area (50). The reserved area (50) is preferably adsorbed onto the back sheet (2) by bonding agent or adhesive, sonic bonding, thermal bonding, nailing, embroidery or any known adsorption technology, like bonding.

As shown in Figure 6B, a barrier layer (66) can be fixed on the bottom edge of the reserved area (70), so that the barrier layer is regarded as a part of the reserved area, and the sheet ( 2) Body edge surface (44). The retention area is adsorbed to the rear sheet (2) and the upper sheet (4), allowing the retention area to extend outward to pull the upper sheet (4) and the lower sheet (2) away from the user's body, thus creating a gap between the upper sheet and the user's body space.

Refer to the seventh to ninth C pictures, which show most of the replaceable embodiment disposable absorbent pants. In the embodiment of Figures 7-9C, the absorbent composite material (100) extends longitudinally along one end (116) of the pants to the other end (118). A pair of front body cushions (108) have inner edges (180) fixed to an edge-to-side area (182) adjacent to an end of the absorbent composite. Similarly, a pair of back body cushions (208) have inner edges (280) fixed to the edge-to-side area (182) adjacent to an end of the absorbent composite. Body cushions (108), (208) extend from the absorbent composite and the rear side edges.

The fastener label (114) is attached and extends from the side of the outer edge (282) of the back body cushion. It must be aware that the fastener label may be fixed to the front body cushion or at the same time on the front or rear body cushion. Fastener tags can be combined with hooks or loops, such as VELCRO<img file="TWM247185U_D0003.tif" />The fastener system may have attachments or other bonding agents applied to the surface. Alternatively, the fastener label can include a fastener sheet, a strap or other fastener device. Prepared. When the absorbent pants are fixed on the user, the fastener label (114) is fixed to the body cushion at the joining end of the absorbent composite material (116) or connected to the body cushion (108) at the opposite end of the pants. When the device is secured, each side of the absorbent composite material with openings formed on the peripheral edges further defines the openings along the crotch area of the trousers. When determined, the front and back body cushions (108), (208) form opposite sides of the body cushion.

It must be understood that the outer edges (220), (282) of the front and rear body cushions may be connected, for example, by bonding or stitching to create a joint for breathable pants. Alternatively, the front and back body cushions may form complete opposite sides (116), (118) like a single-sided cushion that absorbs and replicates the absorbent composite.

Part of the viewpoint of this creation, one or all of the body cushions (108) and (208) may be made of a wide range of materials with basic weight and properties. For example, the body cushion material may include woven or other woven fabrics, non-woven fabrics, polymeric films, sheets, and the like as incorporated therein. Preferably, the body cushion is made of an elastic material, where the proper term "elastic" means that it can recover at least part of its size and shape after being deformed, and/or exhibit a recovery force. The body cushion can also be made of extended material. It must be immediately noticed that each individual body cushion is composed of a different material, or roughly the same material.

For most of the structures in this creation, the basis weight of the body cushion material is at least a minimum of about 10 grams per square meter. Alternatively, the basis weight is at least 20 g/m², and optionally, it may be at least 40 g/m² to provide improved functionality. In a further point of view, the basis weight of the body cushion material is not more than 80 g/m², and optionally, it may not be more than 60 g/m² to provide improved functions.

With different structures in this creation, the body cushion material can be gas permeable or gas impermeable. The body cushion material can be liquid permeable or liquid impermeable. In some preparations, the body cushion material may be inelastic. In another point of view, the body cushion material may contain elastic materials, at least along the sides of the object The width is elastic and stretchable. Examples of this elastic material include the neck-bonded sheet (NBL) described in U.S. Patent No. 5,336,545, the stretch-bonded sheet (SBL) described in U.S. Patent No. 4,720,415, a neck heating sheet, or similar Things. Such a thin plate can provide an improved combination of clothing touch and elastic stretch.

The required structure, the elastic body cushion material can provide an elasticity, stretch the extension part at least 3%, and preferably at least 5%. Alternatively, the stretch extension can be at least 10%, and optionally, at least 20% to provide improved functions. From another point of view, the elastic stretch extension is not more than 200% and preferably not more than 100%. Alternatively, the stretched part is not more than 50%, and optionally can be not more than 30% to provide improved functions.

The elastic extension ratio or other extension can be measured by the following formula: 100*(LL₀)/L₀); where: L=stretched length, L₀= The initial length. In addition, most of the tensile extensions are measured in 100 grams of force. The tensile force/inch width is used to measure the surrounding direction of the force.

The absorbent composite includes a back sheet (102), an upper sheet (104) and a retention area (150) sandwiched in between. In a best embodiment, each of the upper sheet (104) and the rear sheet (102) moves in the longitudinal width of the composite (100). Preferably, the elastic object (112) is partially fixed between the upper sheet (104) and the rear sheet (102) along at least the side edge area, and it is better to form the user's leg openings at least along the exposed edge area Part. The back sheet and the upper sheet are preferably made of one or more of the aforementioned materials.

The seventh to seventh C figures are embodied, each of the rear sheet (102), the reserved area (150) and the upper sheet (104) includes a Z-fold (128), (126), (156), (190), ( 192) or pleats (30), (54), (194) Formed along the opposite side. Preferably, each rear sheet is folded (126), (128), (156), (158), (190), (192), and the reserved area and the upper sheet (104) are folded inward. Preferably, the upper sheet (104) and the rear sheet (102) extend laterally along each side of the reserved area (150).

For an initial folded or compressed structure, the side width of the absorbent composite (100) is defined as the initial composite width Cwi. If the absorbent pants are fixed or worn on the user, the body cushions (108), (208) are pulled up at the ends (116), (118) in the peripheral direction of the side edges of the composite absorbent side edges (184). The side edges of the body cushion and the end part of the absorbent composite are spread out, such as forming a body line/user contour. In this structure, at least a part of the inwardly folded back sheet and upper sheet are unfolded immediately adjacent to the ends (116) and (118) of the composite material. Depending on the size of the user's body, preferably, the end regions of the rear sheet (102) and the upper sheet (104) are pulled flat again on the user's body to provide a comfortable and neat fit. Best of all, the body cushions (108), (208) provide extra elasticity to allow people of most body types to wear absorbent pants. At the same time, the absorbent end of the composite extends laterally, and the middle or crotch region of the absorbent composite remains in the compressed structure, and preferably has a width of Cwi.

When the pants have excrement, the crotch area of the absorbent composite material (100) will extend downward from the user's body, thus increasing the volume of the pants to grasp the liquid.

As shown in Figure 7C, the extended ends (116) and (118) of the absorbent composite have a composite width equivalent to the sum of the bottom part (122) and the width of the rear sheet fold (126) and (128). The maximum or final expanded width of the absorbent composite is defined as Cwf. In this device, most absorbent composite materials can be stretched, or their expansion coefficient (Cf), which is different from Cwf and Cwi by the initial width, such as Cf=(Cwf-Cwi)/Cwi. Preferably, Cf is greater than 0.1.

In the best embodiment, the absorbent composite further includes side-extended waist elastic composition (not shown) (Shown) along the absorbent composite material ends (116), (118) fixed.

Mention 8th to 8th C pictures_，An alternative embodiment absorbent pant is shown to include an extensible cover (300) secured to one or more sides of the back sheet, upper sheet or body cushion, beyond the outer surface (302) of the back sheet. Preferably, the cover is liquid permeable, where the back sheet is supplied as a barrier layer, although the cover may be liquid impermeable. Preferably, the extendable cover (300) has opposite side edges (304) attached to the opposite edges (132) of the back sheet (102) at least along the longitudinal length of the back sheet. The best'covers are made of the above-mentioned elastic materials. In this embodiment, the liquid-impermeable rear sheet (102), or barrier layer, preferably does not extend to the entire longitudinal length of the absorbent composite, but is rather shorter than the cover (300) and the upper sheet (104). The extendable cover (104) helps maintain the compressed or folded structure of the absorbent composite (100) until it is ready for the user to fix or wear. In addition, the extendable cover (300) provides a continuous touch like pants. The proportion of composite material extension dictates that most composites can extend sideways. In use, the body cushions (108) and (208) pull on the outer side of the extensible absorbent composite material (100), and the extensible cover (300) and the absorbent composite material extend, so that when a garment-like touch is created at the same time When the pants are formed on the body of the user. When the tension is 11.8 g/cm, the stretchable covering preferably provides an extension of at least about 1 cm. When the applied force allowed to release the zero is 1 minute and the tension is 19.70 g/cm, the extendable cover (300) further provides at least about 20% fixed deformation.

Referring to another embodiment of the absorbent composite, the best illustration is the ninth to ninth C, the absorbent composite (100) includes an extended, unfolded upper sheet (400). In one embodiment, the upper sheet extends along the ends (116), (118) of the absorbent pants to extend the outside of the side edges such as unfolded under the retention area and the back sheet. The extendable upper sheet (400) is preferably attached to the rear sheet (102) and the outer side edges (132), (304) of the cover (300). Preferably, both the stretchable upper sheet (400) and the covering (300) have longitudinal extension defined as suction The trousers are long, and in the longitudinal extension area along the end of the back sheet, the upper sheet (400) and the cover (300) provide a soft, comfortable and breathable composition. When the user wears trousers, the side of the body cushion pulls the end (116) of the absorbent composite material, the side (118) faces outward, and the extensible cover and the upper sheet (400) extend to form the body of the user. When the tension is 11.8 g/cm, the stretchable covering preferably provides an extension of at least about 1 cm. When the applied force allowed to release the zero is 1 minute and the tension is 19.70 g/cm, the extendable cover (300) further provides at least about 20% fixed deformation.

Although the best embodiment of this creation is described in the reference, this technical skill determines that the change can be known in appearance and details except that it violates the spirit and scope of the creation. For its part, it tends to attach importance to the above-mentioned details as an explanation rather than a limitation, and it is an additional claim, including all the same, and it tends to define the scope of creation.

<p>2. . . backsheet</p><p>4. . . topsheet</p><p>6. . . retention portion</p><p>8. . . ear portion</p><p>10. . . side edge</p><p>12. . . elastic member</p><p>14. . . fastening tab</p><p>16. . . end</p><p>20. . . outboard edge</p><p>30. . . pleat pleat</p><p>32. . . edge</p><p>34. . . edge</p><p>36. . . barrier layer</p><p>38. . . side</p><p>40. . . side</p><p>42. . . location area</p><p>44. . . surface</p><p>46. . . surface</p><p>48. . . surface</p><p>50. . . retention portion</p><p>52. . . bottom portion</p><p>54. . . pleat pleat</p><p>56. . . Z-fold</p><p>58. . . Z-fold</p><p>60. . . edge</p><p>62. . . edge</p><p>66. . . barrier layer</p><p>68. . . edge</p><p>70. . . underside</p><p>72. . . surface</p><p>74. . . upper side</p><p>100. . . absorbent composite</p><p>102. . . backsheet</p><p>104. . . topsheet</p><p>108. . . body panel body cushion</p><p>112. . . elastic member</p><p>114. . . fastening tab</p><p>116. . . end</p><p>118. . . end</p><p>122. . . bottom portion</p><p>126. . . fold</p><p>128. . . fold</p><p>132. . . edge portion</p><p>134. . . edge portion</p><p>150. . . retention oortion</p><p>156. . . fold</p><p>158. . . fold</p><p>180. . . edge</p><p>182. . . side region</p><p>184. . . edge</p><p>190. . . fold</p><p>192. . . fold</p><p>194. . . pleat pleat</p><p>198. . . crotch region</p><p>208. . . body panel body cushion</p><p>220. . . edge</p><p>280. . . edge</p><p>282. . . edge</p><p>300. . . cover</p><p>302. . . surface</p><p>304. . . edge</p><p>400. . . topsheet</p>

Many features and characteristics are depicted in the figure, and the composite material layer and the space in it are specially provided, with exaggerated and clear figures.

The first picture is a plan view of the best embodiment absorbent pants cut from the body edge.

The first picture A is a schematic cross-sectional view of the best embodiment absorbent pants as shown in the first picture.

The first figure B is a schematic cross-sectional view of the best alternative embodiment of the absorbent pants shown in the first figure.

The second picture is a plan view of the best alternative embodiment absorbent pants cut from the body edge.

The second picture A is a schematic cross-sectional view of the best embodiment absorbent pants as shown in the second picture.

The second figure B is a schematic cross-sectional view of the best alternative embodiment absorbent pants as shown in the second figure.

The third picture is a plan view of another best alternative embodiment absorbent pants cut from the body edge.

The third figure A is a schematic cross-sectional view of the best embodiment absorbent pants as shown in the third figure.

The third figure B is a schematic cross-sectional view of the best alternative embodiment absorbent pants shown in the third figure.

The fourth picture is a plan view of the best alternative embodiment absorbent pants cut from the body edge.

The fourth picture A is a schematic cross-sectional view of the best embodiment absorbent pants as shown in the fourth picture.

The fourth figure B is a schematic cross-sectional view of the best alternative embodiment absorbent pants as shown in the fourth figure.

The fifth picture is a plan view of the best alternative embodiment absorbent pants cut from the body edge.

Figure 5A is a schematic cross-sectional view of the best embodiment absorbent pants as shown in Figure 5.

Figure 5B is a schematic cross-sectional view of the best alternative embodiment absorbent pants as shown in Figure 5.

The sixth picture is a plan view of the best alternative embodiment absorbent pants cut from the body edge.

Figure 6A is a schematic cross-sectional view of the best embodiment absorbent pants as shown in Figure 6.

Figure 6B is a schematic cross-sectional view of the best alternative embodiment absorbent pants as shown in Figure 6.

The seventh picture is a plan view of the best alternative embodiment absorbent pants cut from the body edge.

Figure 7A is a cross-sectional view of the best embodiment absorbent pants along the line 7A-7A as shown in Figure 7 Show.

Figure 7B is a schematic cross-sectional view of the best embodiment absorbent pants shown in Figure 7 along the line 7B-7B, and the absorbent composite is in an unexpanded state.

Figure 7C is a schematic cross-sectional view of the best embodiment absorbent pants shown in Figure 7 along the line 7C-7C, and the absorbent composite material is in an unexpanded state.

The eighth picture is a plan view of the best alternative embodiment absorbent pants cut from the body side.

Figure 8A is a schematic cross-sectional view of the best embodiment absorbent pants as shown in Figure 8 along the line 8A-8A.

Figure 8B is a schematic cross-sectional view of the best embodiment absorbent pants as shown in Figure 8 along the line 8B-8B, and the absorbent composite is in an unexpanded state.

Figure 8C is a schematic cross-sectional view of the best embodied absorbent pants shown in Figure 8 along the line 8C-8C, and the absorbent composite material is in an unexpanded state.

The ninth figure is a plan view of the best alternative embodiment absorbent pants cut from the body edge.

Figure 9A is a schematic cross-sectional view of the best embodiment absorbent pants shown in Figure 9 along the line 9A-9A.

Figure 9B is a schematic cross-sectional view of the best embodiment absorbent pants shown in Figure 9 along the line 9B-9B, and the absorbent composite is in an unexpanded state.

Figure 9C is a schematic cross-sectional view of the best embodiment absorbent pants shown in Figure 9 along the line 9C-9C, and the absorbent composite material is in an unexpanded state.