Two part absorbent article

Abstract

A pant absorbent article is disclosed comprising a belt portion and a crotch portion detachable from each other by a shackle fastening system to provide an absorbent article having a longitudinal direction and a transverse direction, the belt portion having a front belt and a rear belt, a belt portion having elasticity in the transverse direction and comprising a pair of side seams having a seam length LS, the front belt and the rear belt each comprising a belt fastening member facing the garment side, the belt fastening members forming a portion of the fastening system engageable with the crotch fastening member; the crotch portion includes a water permeable topsheet, a water impermeable backsheet, an absorbent core disposed between the topsheet and the backsheet, and the crotch fastening member disposed on a wearer-facing side wherein the crotch portion is provided in a folded state wherein the folded state is achieved by folding the crotch portion along a fold line parallel to the longitudinal axis.

Description

Technical Field

[0001] This invention relates to a two-part absorbent article, comprising a strap portion and a crotch portion, which, when assembled together, provide a trouser-type absorbent article. The crotch portion can be replaced after becoming soiled, thus allowing the strap portion to be used for more than one application. Background Technology

[0002] Absorbent products for personal hygiene, such as disposable adhesive diapers, disposable pants, and adult incontinence underwear, are designed to absorb and contain various bodily fluids, including urine, menstrual blood, and feces. There is a need for absorbent products with replaceable absorbents so that they can be reused after the first soiling. This can be achieved by providing a crotch section that can be attached to a belt, which can be removed after the first soiling and replaced with another crotch section. This type of absorbent material with multiple absorbents allows for the removal of soiled absorbents without completely removing clothing, providing convenience. This convenience may be particularly needed during vacations or in colder seasons. Absorbent products with replaceable crotch sections also save material.

[0003] Absorbent articles with replaceable crotch portions are known in the art, such as those described in Japanese Patent Publications 2023-94947A-94954A and 2023-94956A-94958A. Although such absorbent articles are known, they may require improvement in practical use.

[0004] For example, absorbent articles known in the art may not have considered providing a convenient and hygienic way for the crotch portion to be attached to the strap portion. For example, absorbent articles known in the art may lack measures for securely assembling these portions, or may not have a form that allows for hygienic attachment of the strap portion and the crotch portion. In another example, absorbent articles known in the art may lack measures to guide where the strap portion and the crotch portion are attached to each other, thus preventing the resulting trousers from having essential functions such as containment, leak-proofness, or wearing comfort.

[0005] Based on the above, there is a need for an absorbent garment that allows for convenient and hygienic attachment of the strap and crotch sections. There is also a need for an absorbent garment with two parts that provide visual guidance on how to attach these parts to each other to create trousers that offer good containment, leak-proofness, and wearing comfort. Finally, there is a need for an absorbent garment that addresses the concerns of consumers who are aware of the sustainable use of materials. Summary of the Invention

[0006] This invention relates to a trouser absorbent article comprising a strap portion and a crotch portion, the strap portion and the crotch portion being detachable from each other via a hook-and-loop fastening system to provide the absorbent article, the absorbent article having a longitudinal direction and a transverse direction.

[0007] The belt portion has a front belt and a back belt, the belt portion is elastic in the lateral direction and includes a pair of side seams with a seam length LS, the front belt and the back belt each include a belt fastening member facing the garment side, the belt fastening member forming part of the fastening system that can engage with the crotch fastening member;

[0008] The crotch portion includes a water-permeable top sheet, a water-impermeable bottom sheet, an absorbent core disposed between the top sheet and the bottom sheet, and a crotch fastening component disposed on the side facing the wearer.

[0009] The crotch portion is provided in a folded state, wherein the folded state is achieved by folding the crotch portion along a fold line parallel to the longitudinal axis. Attached Figure Description

[0010] Although this specification concludes by specifically pointing out and clearly claiming the claims of the invention, which are considered to form part of the invention, it is believed that the invention will be better understood from the following description taken in conjunction with the accompanying drawings, wherein similar reference numerals are used to indicate substantially the same elements, and wherein:

[0011] Figures 1A to 1G This is a schematic perspective view of an embodiment of the two-part absorbent article of the present invention, showing how the belt portion and the crotch portion are attached to each other to form a trouser-type absorbent article.

[0012] Figures 2A to 2C This is a schematic plan view of an embodiment of the front strap of the present invention with any seams removed and in a flat, unshrinked state, showing the surface facing the wearer.

[0013] Figures 2D to 2F This is a schematic plan view of an embodiment of the back strap of the present invention with any seams removed and in a flat, unshrinked state, showing the surface facing the wearer.

[0014] Figures 3A to 3D yes Figures 2A to 2F The two figures are schematic longitudinal cross-sectional views taken along lines AA and BB respectively when formed as banded sections.

[0015] Figures 4A to 4F This is a schematic plan view of an embodiment of the crotch portion of the present invention in a flat, unshrinked state, showing the surface facing the wearer.

[0016] Figures 5A to 5C This is a schematic perspective view of an embodiment of the crotch portion of the present invention.

[0017] Figures 6A to 6B They are Figure 4A and Figure 4C A schematic cross-sectional view taken along line CC.

[0018] Figures 7A to 7E This is a schematic plan view of an embodiment of the strap portion and crotch portion of the present invention formed as a trouser-type absorbent article, wherein the side seam is removed and the article is shown facing the garment side.

[0019] Figures 8A to 8C This is a schematic perspective view of an embodiment of the present invention with markings and crotch markings, and how they match each other.

[0020] Figures 9A1 to 9C2 This is a schematic perspective view of an embodiment of the belt portion and crotch portion of the present invention, the form of which is convenient for packaging.

[0021] Figure 10 This is a schematic diagram of an example of a hanging sample fixture based on the "Full Product Force Measurement" section of this article.

[0022] Figures 11A to 11C This is a schematic diagram of an example of the equipment used for measuring bending force according to the article "Bending Force Measurement".

[0023] definition

[0024] As used herein, the following terms shall have the meanings specified below:

[0025] "Absorbent articles" refers to wearable articles, such as trousers, adhesive diapers, incontinence underwear, and feminine hygiene underwear, which are constructed to absorb and contain various excretions, such as urine, feces, and menstrual fluids excreted from the body. "Absorbent articles" can also be used as outer coverings suitable for engagement with separate disposable absorbent inserts for providing absorption and containment functions, such as those disclosed in PCT Publication WO 2011 / 087503A.

[0026] "Pants" refers to disposable absorbent fabric with pre-formed waist and leg openings. Pants are put on by inserting the wearer's legs into the leg openings and pulling the pants up to the appropriate position around the wearer's lower body. Pants are also commonly referred to as "closed diapers," "pre-tightening diapers," "over-the-top diapers," "training pants," and "diaper pants."

[0027] "Longitudinal" refers to the direction that extends substantially vertically from the waist edge of the garment to the opposite waist edge and is roughly parallel to the maximum linear dimension of the trouser-type absorbent garment when the belt and crotch sections are attached to each other.

[0028] "Horizontal" refers to a direction perpendicular to the longitudinal direction.

[0029] "Proximal" and "distal" refer to the positions closer to or farther from the longitudinal center of the trouser absorbent fabric when the belt and crotch sections are attached to each other.

[0030] "Wear-facing" and "clothing-facing" refer to the relative positions of elements, element surfaces, or groups of elements in a pant-type absorbent article when the belt section and crotch section are attached to each other. "Wear-facing" means that an element or surface is closer to the wearer than some other elements or surfaces during wear. "Clothing-facing" means that an element or surface is further away from the wearer than some other elements or surfaces during wear (i.e., the element or surface is closer to the wearer's clothing, which may be worn over a disposable diaper product).

[0031] "Setting" refers to the positioning of a component in a specific location or position.

[0032] "Jointed" refers to configurations in which one element is directly fixed to another element by directly attaching it to the other element; it also refers to configurations in which one element is indirectly fixed to another element by attaching it to an intermediate member, which in turn attaches the intermediate member to another element.

[0033] A "membrane" refers to a sheet-like material in which the length and width of the material far exceed its thickness. Typically, membranes have a thickness of about 0.5 mm or less.

[0034] The terms “nonwoven fabric,” “nonwoven layer,” or “nonwoven fiber web” are used interchangeably to refer to engineered fiber assemblies that are primarily planar and have been given a design-level structural integrity through physical and / or chemical means, but do not include weaving, knitting, or papermaking (as defined in ISO 9092:2019). Oriented or randomly oriented fibers are bonded together by friction and / or cohesive and / or adhesive forces. These fibers may be of natural or synthetic origin and may be short fibers, continuous filaments, or in-situ formed fibers. Commercially available fibers have diameters ranging from less than about 0.001 mm to greater than about 0.2 mm and come in several different forms, such as short fibers (known as chemically woven short fibers or chopped fibers), continuous monofilaments (filaments or monofilaments), untwisted continuous filament bundles (tows), and twisted continuous filament bundles (yarns). Nonwoven fiber webs can be formed by a variety of methods, such as meltblown, spunbond, solution spinning, electrospinning, carding, and air-jet spinning. The basis weight of nonwoven fiber webs is usually expressed in grams per square meter (g / m²). 2 (or gsm) indicates.

[0035] "Water-permeable" and "water-impermeable" refer to the permeability of a material within the intended use range of a disposable diaper product. Specifically, the term "water-permeable" refers to a layer or layered structure having pores, openings, and / or interconnected void spaces that allow liquid water, urine, or synthetic urine to pass through the thickness of the layer or layered structure without pressure. Conversely, the term "water-impermeable" refers to a layer or layered structure in which liquid water, urine, or synthetic urine cannot pass through the thickness of the layer or layered structure without pressure (other than natural forces such as gravity). According to this definition, a water-impermeable layer or layered structure can be water vapor permeable, i.e., it can be "vapor permeable".

[0036] The term "hydrophilic" describes the surface of a substrate that can be wetted by an aqueous fluid (e.g., an aqueous body fluid) deposited on it. Hydrophilicity and wettability are typically defined based on the contact angle and permeability of the fluid, for example, through a nonwoven fabric. This is discussed in detail in the American Chemical Society publication, "Contact Angle, Wetability, and Adhesion" (copyright 1964), edited by Robert F. Gould. A substrate surface can be said to be wetted (i.e., hydrophilic) when the contact angle between the fluid and the surface is less than 90°, or when the fluid tends to spread spontaneously along the substrate surface (both conditions often coexist). Conversely, if the contact angle is greater than 90° and the fluid does not spread spontaneously along the fiber surface, the substrate is considered "hydrophobic."

[0037] "Extensibility" and "stretchability" mean that the width or length of a component in a relaxed state can be stretched or increased.

[0038] "Elastic" and "flexible" mean that a component includes at least a portion made of an elastic material.

[0039] The terms “elongable material,” “ductile material,” or “stretchable material” are used interchangeably and refer to materials that, when a biased force is applied, can be stretched to at least about 110% of their relaxed initial length (i.e., stretched to more than 10% of their initial length) without breaking or fracturing, and exhibit minimal recovery upon release of the applied force, i.e., recovery less than about 20% of their elongation without completely breaking or fracturing, the recovery being measured by EDANA method 20.2-89. In cases where such an elongable material recovers at least 40% of its elongation upon release of the applied force, the elongable material will be considered “elastic” or “elastomer.” For example, an elastic material with an initial length of 100 mm can stretch to at least 150 mm and retract to a length of at least 130 mm upon removal of the force (i.e., exhibiting 40% recovery). In cases where the material recovers less than 40% of its elongation upon release of the applied force, the elongable material will be considered “substantially inelastic” or “substantially non-elastic.” For example, an elongated material with an initial length of 100 mm can be stretched to at least 150 mm and shrink back to a length of at least 145 mm when the force is removed (i.e., exhibiting 10% recovery).

[0040] Unless otherwise specified, the “dimensions”, “length”, “width”, “spacing”, “diameter”, “aspect ratio”, “angle” and “area” of the article are measured in the following condition: the article is stretched to its full tensile circumference W1, which is measured according to the “Full Article Force Measurement” in this document and using a ruler or a small magnifying glass.

[0041] "Original image" refers to a visual representation that is visible to the naked eye, provided through printing or other means, and possesses color. Printing includes various methods and equipment well known to those skilled in the art, such as offset printing, screen printing, flexographic printing, and gravure inkjet printing.

[0042] As used herein, “color” or “colored” includes any primary color other than white, namely black, red, blue, purple, orange, yellow, green, and indigo, as well as any variations thereof or mixtures thereof. According to CIE L a b In the color system, white is defined as having an L value of at least 94. The value of a is equal to 0 ± 2. The sum of the values ​​of b is equal to 0 ± 2 Those colors are worth it. Detailed Implementation

[0043] Two-part absorbent products

[0044] Figures 1A to 1G are a series of perspective views of an embodiment of the two-part absorbent article of the present invention, which is made of a strap portion (40) and a crotch portion (38), which, when assembled together, form a trouser absorbent article (20). The strap portion (40) and the crotch portion (38) can be detached from each other by a hook-and-loop fastening system (33) or other fastening system. Each of the strap portion (40), the crotch portion (38), and the trouser absorbent article (20) formed by assembling the strap portion (40) and the crotch portion (38) has a longitudinal direction and a transverse direction. Each of the strap portion (40), the crotch portion (38), and the trouser absorbent article (20) has a longitudinal center line LX, which also serves as a longitudinal axis. Each of the strap portion (40) and the crotch portion (38) has a transverse center line TX, which also serves as a transverse axis. The two-part absorbent article of the present invention can be provided as a commodity or commercially available item in various forms associated with the two-part absorbent article, for example as a kit including the necessary parts for providing the absorbent trousers article, or one part including size information and a method of attaching to the other part so that the purchaser can match it with the corresponding commodity to form the absorbent trousers article.

[0045] The band portion (40) is formed to conform to the torso circumference of the intended wearer to dynamically generate a fitting force and distribute the force dynamically generated during wear. The band portion (40) has a front band and a back band, which is elastic in the transverse direction and includes a pair of side seams with a seam length LS, wherein the front band (84) and the back band (86) form an annular elastic portion. The front band and the back band (84, 86) may be made elastic by an elastomer, such as an elastic membrane and elastic strands laminated between nonwoven substrates. In such embodiments, the front band and the back band are typically bonded together to form left and right side seams (32). Side seam bonding may be provided by heat, heated air, ultrasonic energy, pressure, adhesives, or combinations thereof. The front band and the back band (84, 86) may be made of durable materials, as described in further detail below, which are made elastic by an elastomer laminated between fabrics or attached to the surface of a fabric, or by threads formed by weaving or knitting the fabric. Regardless of the materials used to form the front and rear bands (84, 86), the transverse edges that separate the front and rear regions of the band portions (84, 86) are considered side seams (32). When the band portions are uniform in the circumferential direction, any two lines located on the farthest side in the transverse direction are considered side seams.

[0046] The longitudinal dimension of the strip (40) along its circumference may be uniform or may vary. (See reference) Figures 2A to 2FThe rear strap (86) may have a larger longitudinal dimension than the front strap (84). In such embodiments, the distal edges of the front and rear straps (84, 86) may mate to form a waist opening, wherein the remaining dimension of the rear strap forms an auxiliary portion serving as a hip cover. Still refer to Figure 2A and Figure 2F The front strap (84) and the back strap (86) are each divided into multiple zones that span in the lateral direction and are defined by the percentage of their position from the distal edge (88) to the proximal edge (90) relative to the seam length LS, where the distal edge (88) is considered 0% and the proximal edge (90) is considered 100%. The front strap (84) and the back strap (86) each include a strap fastening member (33B) facing the garment side, which forms part of the fastening system (33) that can engage with the crotch fastening member (33C), wherein the position of the strap fastening member (33B) relative to the seam length LS is considered the fastening zone (103). When supplied as a product, the strap portion (40) may be in a contracted and flat state, wherein the side seams (32) are positioned at the left and right ends, as shown. Figure 9A1 Then, the strip (40) may optionally be folded along one or more lines generally parallel to the longitudinal or transverse axis. Alternatively, refer to Figures 9A2 to 9A3 The strip portion (40) may optionally be rolled up in the transverse direction to provide a near-cylindrical shape. The strip portions (40) in this state may then be stacked or grouped together in the thickness direction and packaged in a primary package consisting only of the strip portions (40).

[0047] The crotch area (38) is shaped to conform to the intended wearer's crotch to absorb and contain bodily fluids, while also generating a conforming force during wear. Reference Figures 4A to 4F and Figures 6A to 6B The crotch portion (38) includes a water-permeable top sheet (24), a water-impermeable bottom sheet (25), an absorbent core (62) disposed between the top sheet (24) and the bottom sheet (25), and a crotch fastening member (33C) disposed on the wearer-facing side. After soiling, the crotch portion (38) can be removed and replaced with a new one, allowing the strap portion (40) to be used for more than one use. This replacement of the crotch portion (38) also allows diaper changes without removing the entire absorbent material (20) from the wearer. Reference Figure 9B1 When supplied as a product, the crotch portion (38) is provided in a folded state, wherein this folding state is achieved by folding the crotch portion (38) along a fold line (FL) parallel to the longitudinal axis LX. There may be only one fold line (FL) that aligns with the longitudinal axis LX, or there may be two fold lines that are parallel to the longitudinal axis LX and do not align with it. (See reference...) Figure 1BBy providing the crotch portion (38) in this folded state before attaching it to the strap portion (40), the crotch portion (38) can be effectively inserted between the wearer's legs and attached to the strap portion (40). Reference Figure 9B2 The crotch portion (38) may then optionally be folded along one or more lines generally parallel to the transverse axis. Alternatively, the crotch portion (38) may then optionally be rolled up in the transverse direction to provide a near-cylindrical shape, similar to... Figure 9A2 The shape of the crotch portion in the middle. Then, the crotch portion (38) in this state can be stacked or gathered together in the thickness direction and packaged in a primary package consisting only of the crotch portion (38).

[0048] like Figures 8A to 8C In the package, the strap portion (40) may include a strap mark, and the crotch portion (38) may include a crotch mark, wherein the strap mark and the crotch mark are configured to facilitate attachment of the strap portion (40) and the crotch portion (38) to the intended location. A primary package consisting of a first plurality of strap portions (40) and another primary package consisting of a second plurality of crotch portions (38) may be packaged together in a secondary package to provide a kit product. In such kit products, the second plurality may be larger than the first plurality. Alternatively, a package consisting only of the strap portions (40) or the crotch portion (38) may be provided as a product, wherein the product includes size information and attachment methods to enable the purchaser to match it to the corresponding size of the strap portions (40) or the crotch portion (38) to form a trouser-type absorbent article (20). Alternatively, a kit product may consist of one or more strap portions (40) and one or more crotch portions (38) in the same primary package for use as, for example, a travel kit, a sample, a gift, or for other purposes.

[0049] The belt portion (40) and the crotch portion (38) can be configured to provide a one-to-one match of the same dimensions. Alternatively, a variation of the crotch portion (38) that matches the same belt portion (40) can be provided. For example, see reference... Figure 8C The crotch section (38) can be provided with different capacity for daytime and nighttime use. For example, different sizes of strap section (40) and crotch section (38) can be matched to fit the wearer's unique body structure.

[0050] As described above, the crotch portion (38) of the present invention can be provided in a folded state, wherein the folded state is achieved by folding the crotch portion (38) along a fold line (FL) parallel to the longitudinal axis LX. Such a folded state can be provided for both the crotch portion and the belt portion (40), as described in further detail below. The folded state can be achieved by using hook-and-loop fastening members provided on the crotch portion (38) or the belt portion (40), or by other bonding methods such as ultrasonic energy, adhesives, thermal welding, pressure, or combinations thereof. Regardless of the bonding method, and regardless of the location of the member provided for providing the folded state, such measures for providing the folded state are considered foldable attachment members. According to the peel strength measurement method described herein, foldable attachment members can have a peel strength of about 0.3N to about 10N, or about 1N to about 5N.

[0051] With part

[0052] refer to Figures 2A to 2F The band portion (40) includes a front band (84) and a rear band (86) extending in the transverse direction between the side seams (32), thereby forming an annular elastic portion. (See reference) Figures 3A to 3D The band portion (40) may be made of two or more layers of nonwoven material (92, 94), with an elastomer sandwiched between the nonwoven layers. The front and back bands (84, 86) may be made elastic by an elastomer (e.g., elastic strands (96) laminated between the nonwoven substrates). The elastomer may be a strip of elastic membrane or an elastic strand (96) with about 400 to about 1200 dtex visible to the naked eye. The elastomer may be a low-dtex elastic strand, which is not easily visible to the naked eye, thus providing an underwear appearance to the band portion (40), such as an elastic strand with about 30 to about 400, preferably about 30 to about 300 dtex. In the discussion below, both the front and back bands may be referred to as zones, wherein multiple zones are spanned in the lateral direction and defined by the percentage of their position from the distal edge to the proximal edge relative to the seam length LS, wherein the distal edge is considered to be 0% and the proximal edge is considered to be 100%.

[0053] refer to Figures 2A to 2B , Figures 2D to 2E , Figures 3A to 3B and Figure 7AWhen the belt fastening member (33BL) on the front and rear belts (84, 86) includes a loop, the crotch fastening member (33CH) includes a hook. In this embodiment, the belt fastening member (33BL) may be positioned at approximately 10% to approximately 100% of the LS, preferably at approximately 15% to approximately 85% of the LS. Furthermore, the belt fastening member (33BL) may extend to approximately 60% to approximately 100%, preferably approximately 70% to approximately 85% of the lateral dimension of the belt, wherein the percentage is measured with the belt portion (40) fully stretched. In this embodiment, the area of ​​the belt fastening member (33BL) may be at least the same as the area of ​​the crotch fastening member (33CH). By making the area of ​​the belt fastening member (33BL) equal to or greater than the area of ​​the crotch fastening member (33CH), the crotch fastening member (33CH) can be easily attached to the belt fastening member (33BL).

[0054] Furthermore, in this embodiment, the front and rear straps (84, 86) may each include an anchoring area (104) comprising reinforcing material (40R) located at approximately 0% to approximately 70%, preferably approximately 20% to approximately 60% of the seam length LS. At least a portion of the anchoring area (104) may overlap with a strap fastening member (33BL). The reinforcing material (40R) may be located on the wearer-facing side or the clothing-facing side of the strap portion, preferably on the wearer-facing side. The reinforcing material (40R) may be a material that does not interfere with the lateral tensile strength of the strap portion, such as an additional laminate comprising nonwoven fabric and elastic strands, a stretchable membrane, or a stretchable nonwoven fabric. The front and rear straps (84, 86) may each include an abdominal area (106) located proximal to the anchoring area (104) and a waist area (102) located distal to the anchoring area. When the front and back straps (84, 86) have different longitudinal dimensions, the remainder of each of the front (84) and back (86) straps is considered the waist area (102) and the abdominal area (106). An anchoring area (104) may be configured to have a tensile stress at least 1.5 times, preferably about 2 to about 5 times, that of the abdominal area (106). Anchoring area (104) may be configured to have a bending force at least 2 times, preferably about 2.2 to about 5 times, that of the abdominal area (106). Anchoring area (104) may be configured to have a tensile stress at least 1.5 times, preferably about 1.6 to about 4 times, that of the waist area (102). Anchoring area (104) may be configured to have a bending force at least 2 times, preferably about 2 to about 5 times, that of the waist area (102). By providing an anchoring area (104) with higher tensile stress and / or higher bending force compared to the remaining areas, better fit can be provided for the assembled trouser absorbent article. The anchoring areas (104) of the front belt (84) and the rear belt (86) can be arranged such that the positions relative to 0% to 100% of the LS match between the front belt and the rear belt (84, 86) for a good appearance. The belt fastening member (33BL) may also not extend to the entire lateral dimension of the front or rear belt and be positioned away from the side seam to ensure a tight fit with the crotch portion.

[0055] refer to Figure 2C , Figure 2F , Figures 3C to 3D and Figures 7B to 7CWhen the belt fastening members (33BH) on the front and rear belts (84, 86) include hooks, the crotch fastening member (33CL) includes a loop. In this embodiment, the belt fastening member (33BH) is disposed on no more than about 50% of the lateral dimension of the belt portion (40), preferably on no more than about 30% of the lateral dimension of the belt portion (40). In this embodiment, the area of ​​the crotch fastening member (33CL) may be at least the same as the area of ​​the belt fastening member (33BH). By making the area of ​​the crotch fastening member (33CL) equal to or greater than the area of ​​the belt fastening member (33BH), the crotch fastening member (33CL) can be easily attached to the belt fastening member (33BH). In this embodiment, the belt portion (40) may be made without elasticity in the area overlapping with the belt fastening member (33BH). By providing a non-elastic band portion (40) at the overlapping position of the belt fasteners (33BH), it is possible to prevent the hook fasteners from bunching together and to allow smooth attachment of the belt fasteners (33BH) to the crotch fasteners (33CL). That is, each of the front and rear belts (84, 86) may have a non-elastic area (221) at the lateral center of the band portion, while having elastic areas (220) on each of the left and right sides of the front and rear belts (84, 86). Reference Figure 2C and Figure 2F In this embodiment, the fastening component (33BH) may include transverse and longitudinal elements that are continuous with each other to achieve a secure fit.

[0056] Furthermore, in this embodiment, when the front and rear belts (84, 86) each include a fastening area (103) that matches the position of the belt fastening member, the tensile stress in the fastening area (103) may not be higher than the tensile stress in the remaining areas. The front and rear belts (84, 86) may each include an upper area (101) located distal to the fastening area (103) and a lower area (105) located proximal to the fastening area (103). When the front and rear belts (84, 86) have different longitudinal dimensions, the remaining portion of each of the front belt (84) and the rear belt (86) is considered the upper area (101) and the lower area (105). When the front and rear belts (84, 86) each comprise an upper region (101) distal to the fastening area and a lower region (105) proximal to the fastening area, the upper region (101), fastening area (103), and lower region (105) may have substantially the same tensile stress. Substantially the same tensile stress means that, among the two or three values ​​obtained, any value deviates from another value or the median value by within ±10%. Alternatively, the upper region (101) may have a higher tensile stress than the fastening area (103). Furthermore, refer to... Figure 9A4The strap portion (40) can be provided in a folded state, wherein the folded state is achieved by folding each of the front and rear straps inward against the longitudinal axis in a linearly symmetrical manner, such that the hooks on one side of the strap portion (40) face each other.

[0057] refer to Figures 2A to 2F One of the front and rear belts may have a belt fastening member (33BH) including a hook, and the other of the front or rear belts may have a belt fastening member (33BL) including a loop; wherein the front and rear crotch fastening members (33C) can each engage with the belt fastening member. That is, the front belt fastening member (33BL) may include, for example, Figures 2A to 2B The ring in the middle, and the rear fastening component (33BH) may include, for example, Figure 2F The hook in the middle. In this implementation, Figure 7E The relationship between the belt portion (40) and the crotch portion (38) is described. Conversely, the front belt fastening component (33BH) may include, for example, Figure 2C The hook in the middle, and the rear fastening component (33BL) may include, for example, Figures 2D to 2E The ring within. In this implementation, Figure 7D The relationship between the belt section (40) and the crotch section (38) is described. The front and rear sides of the belt section (40) can be easily distinguished by providing different belt fastening components (33B) at the front and rear. Furthermore, refer to... Figure 9A5 This allows the strap portion (40) to be provided in a folded state, wherein the folded state is achieved by folding the strap portion (40) such that one of the front and rear straps, including the hooks, is folded inward against the longitudinal axis in a line-symmetrical manner, such that the hooks face each other.

[0058] refer to Figure 2B and Figure 2E The front and / or back straps (84, 86) may include a proximal notch (108). This notch prevents the proximal side of the strap portion from being soiled by bodily fluids. Furthermore, this notch (108) allows more material from the crotch portion (38) to face the wearer, thus allowing materials such as the top piece (24) to be exposed to the wearer. This improves absorbency and prevents leakage from the assembled absorbent article.

[0059] The strip portion (40) may be made of durable materials, including woven or knitted textiles made of natural fibers such as cotton, flax, wool, bamboo, hemp, silk, rayon, etc., and any blends of these fibers with any other fiber or with synthetic fibers. Examples of synthetic fibers suitable as components of durable materials include polyester, nylon, spandex, and / or other elastomer fibers. Durable materials may also include: breathable and waterproof materials such as GORE-TEX (products of WL Gore & Associates, Inc., Elkton, MD); fabrics containing microencapsulated phase change polymer materials such as OUTLASTCOMFORTEMP fabrics (products of Outlast Technologies, Boulder, CO, as in U.S. Patent Nos. 6,514,362 and 6,207,738), COOLMAX (products of Invista, Wichita, KS), etc. Suitable durable materials can be formed in any woven or knitted fabric form, including bird's-eye fabric, terry cloth, fleece, flannel, knitted fabric, stretch knitted fabric, lambskin, suede, superfine fleece, satin, velvet, Burley knitted fabric, etc. Suitable examples include POLARTECHPOWER DRY, POWER STRETCH, and WIND PRO (products of Polartec, LLC, Lawrence, MA). Knitted textiles can impart good fit, comfort, and / or appearance to the belt portion (40). Fibers incorporating spandex or other elastomers can also enhance stretch and elasticity compared to textiles that do not contain such elastic fibers, thereby imparting good fit, comfort, and / or appearance to the belt portion (40). Specific suitable examples of durable materials include plain knitted fabrics of blends of the following fibers: rayon (93%) and spandex (7%); modal (94%) and spandex (6%); cotton and spandex; and bamboo and spandex.

[0060] In this embodiment, the belt and crotch fastening components (33B, 33C) may be buttons and buttonholes, zippers, metal or plastic hooks and links, and other garment fastening components.

[0061] crotch area

[0062] refer to Figures 4A to 4F The crotch portion (38) includes a front region (26), a central region (30) and a rear region (28), each extending to one-third of the longitudinal dimension of the crotch portion.

[0063] refer to Figures 6A to 6BThe crotch portion (38) includes a water-permeable top sheet (24), a water-impermeable bottom sheet (25), and an absorbent core (62) disposed between the top sheet (24) and the bottom sheet (25). The crotch portion (38) may also include an outer cover layer (42).

[0064] A water-permeable topsheet (24) is positioned to at least partially contact or be in close proximity to the wearer. Suitable topsheets (24) can be made from a wide range of materials, such as porous foam; mesh foam; open-cell plastic film; or woven or nonwoven fiber webs composed of natural fibers (e.g., wood or cotton), synthetic fibers (e.g., polyester or polypropylene), or a combination of natural and synthetic fibers. Topsheets (24) are generally soft, gentle to the touch, and non-irritating to the wearer's skin. Topsheets (24) are liquid-permeable, allowing bodily fluids to easily permeate through the thickness of the topsheet (24). Exemplary topsheets (24) suitable for use herein include those purchased from Xiamen Yanjan New Material Co. Ltd., made of a carded nonwoven substrate comprising PE / PET bicomponent fibers, and marketed under the trade name H30501221 from Fibertex NiLai, Malaysia, or under the trade name SB1206169 from FQN Hazlet NJ. As is known in the art, any portion of the topsheet (24) may be coated with a lotion or skincare composition. Examples of suitable lotions include those described in U.S. Patents 5,607,760; 5,609,587; 5,635,191; and 5,643,588.

[0065] A water-impermeable backsheet (25) is designed to prevent runoff absorbed by and contained within the absorbent core (62) from soiling items that may come into contact with the diaper garment (20), such as sheets and underwear. The backsheet (25) may be positioned such that it extends beyond the absorbent core (62) positioned on the wearer-facing side of the particular backsheet (25) in both the longitudinal and transverse directions. Suitable backsheet (25) materials include membranes, such as those manufactured by Plaster Argentina under the trade name PLBANBBS 10-12GSM PR V1. Other suitable backsheet (25) materials may include breathable materials that allow vapors to escape from the diaper garment (20) while still preventing runoff from passing through the backsheet (25). Exemplary breathable materials may include materials such as woven fiber webs, nonwoven fiber webs, composite materials such as membrane-coated nonwoven fiber webs, and microporous membranes, such as those manufactured by Daika Japan under the trade name MPF DKH-180 15G V7 and by Berry Nashville, TN under the trade name BR-137P V13. Such breathable composite materials are described in more detail in PCT application WO 95 / 16746 and U.S. Patent No. 5,865,823. Other breathable substrates, including nonwoven fiber webs and open-cell shaped membranes, are described in U.S. Patent No. 5,571,096. Exemplary suitable substrates are disclosed in U.S. Patent No. 6,107,537. Other suitable materials and / or manufacturing techniques may be used to provide suitable substrates, including but not limited to surface treatments, specific membrane selection and processing, specific filament selection and processing, etc.

[0066] The crotch portion (38) of the present invention includes an absorbent core (62) disposed on the wearer-facing side for absorbing and containing bodily excretions. The absorbent core (62) may include an absorbent layer and a collection system. The absorbent layer is a region in which an absorbent material with high retention capacity, such as a superabsorbent polymer, is present. The absorbent layer may be substantially cellulose-free. Alternatively, the absorbent layer may contain cellulose. An absorbent layer primarily containing cellulose and another absorbent layer primarily containing a superabsorbent polymer may be present.

[0067] The superabsorbent polymer of the absorbent layer can be disposed between a first material layer and a second material layer fixed by a fiber layer of thermoplastic adhesive material. The first and second material layers can be nonwoven fiber webs, including synthetic fibers such as single-component fibers of PE, PET and PP, and multi-component fibers such as side-by-side, core / skin or island-of-the-sea fibers. Such synthetic fibers can be formed by spunbonding or meltblowing. Some portions of the absorbent layer can be configured to be substantially free of absorbent material to form one or more channels. The channels can be used to allow the absorbent core (62) to bend when swollen by the fluid, so that the central region (30) conforms to the wearer's body after swelling and prevents the diaper product (20) from sagging. Multiple absorbent layers can be disposed in the absorbent core (62).

[0068] Alternatively, the absorbent core 62 may comprise a high-loft material containing a superabsorbent polymer. The term "high-loft" refers to a low-density, loosely woven fabric compared to a flat, paper-like fabric. High-loft fiber webs are characterized by a relatively high porosity. This means that a relatively high amount of void space exists within which superabsorbent polymer particles can be distributed. The high-loft material (without superabsorbent particles) can have a porosity of less than 0.20 g / cm³ at a pressure of 4.14 kPa (0.6 psi). 3 The density, especially at 0.05 g / cm³ 3 Up to 0.15 g / cm 3 Density within the specified range. A high-loose layer (without superabsorbent particles) can have a density below 0.20 g / cm³ at a pressure of 2.07 kPa (0.3 psi). 3 Especially at 0.02 g / cm 3 Up to 0.15 g / cm 3 Density within the specified range. A high-loose layer (without superabsorbent particles) can have a density below 0.15 g / cm³ at a pressure of 0.83 kPa (0.12 psi). 3 Especially 0.01g / cm 3 Up to 0.15 g / cm 3 Density within the range of 15 gsm to 500 gsm, preferably 30 gsm to 200 gsm, such as those described in US 2021 / 0361497 A1. The absorbent core (62) comprising a high-loft material covering the superabsorbent polymer may also contain channels.

[0069] The absorbent core (62) may also include a collection system for facilitating the collection and distribution of bodily fluids and may be positioned between the top sheet (24) and the absorbent layer. The collection system functions to rapidly collect fluid from the top sheet (24) away from the wearer-facing side and / or distribute it over a larger area, allowing for more efficient absorption by the absorbent core. The collection system may contain cellulose fibers. Channels may also be formed in the collection system and may be configured to at least partially match the channels of the absorbent layer in the thickness direction. Another liquid management layer of this type may also be positioned between the bottom sheet (25) and the absorbent layer. The liquid management layer may be a spunlace nonwoven fabric comprising viscose, PET, CoPET / PET fibers, and combinations thereof.

[0070] refer to Figures 4A to 4F The crotch portion (38) includes crotch fastening components (33C) in the front region (26) and the rear region (28). Reference Figures 4A to 4E Each crotch fastening component (33C) may include a continuous transverse element extending in the transverse direction from the longitudinal end adjacent to the crotch portion (38) and a longitudinal element extending in the longitudinal direction from the transverse edge adjacent to the crotch portion (38). The advantage of placing the crotch fastening component (33C) in this area is that it provides a good finished appearance and effectively prevents leakage between the belt portion (40) and the crotch portion (38).

[0071] The longitudinal element of the crotch fastening component (33C) can be continuous with the transverse element to ensure a good fastening. (Reference) Figure 4B The longitudinal elements can be positioned away from the longitudinal edge of the crotch portion (38), and the transverse elements can be positioned away from the transverse edge of the crotch portion (38) to save material. The overall outline of the crotch portion (38) can be set as rectangular. (See reference...) Figures 1A to 1G The lateral dimension of the central region (30) can be smaller than that of the front region (26) or the rear region (28), and the longitudinal edge of the front region (26) can be made concave, as can the longitudinal edge of the rear region (28). This overall profile shape allows the folded crotch portion (38) to be smoothly inserted between the wearer's legs. (Reference) Figure 4D The front area can be tapered, so that the longitudinal edge of the front area has a minimal lateral dimension within the front area. This overall profile shape allows the front crotch portion (38) to be smoothly and securely attached to the front strap portion (40), and further provides a continuous fit during wear. Reference Figures 5A to 5B The crotch portion (38) may include a finger pocket (38P) facing the garment side, which overlaps with the crotch fastening member (33C). The finger pocket (38P) is used by inserting a finger and pressing the crotch fastening member (33C) against the fastening member (33B). When the crotch portion (38) includes the finger pocket (38P), the crotch portion may be provided in a folded state with only one fold line.

[0072] refer to Figures 4A to 4B and Figure 7A When the belt fastening members (33BL) on the front and rear belts (84, 86) include loops, the crotch fastening member (33CH) includes a hook. In this embodiment, the area of ​​the crotch fastening member (33CH) is a folded attachment member. In this embodiment, the area of ​​the crotch fastening member (33CH) may not be larger than the area of ​​the belt fastening member (33BL). In this embodiment, the crotch fastening member (33CH) does not overlap with the absorbent core (62).

[0073] refer to Figures 4C to 4F and Figures 7B to 7C When the belt fastening members (33BH) on the front and rear belts (84, 86) include hooks, the crotch fastening member (33CL) includes a ring. The ring of the crotch fastening member (33CL) may be provided as an additional base. In this embodiment, the foldable attachment member may preferably be provided by ultrasonic welding. Reference Figures 4E to 4F and Figure 5C In this embodiment, the crotch fastening member base may be disposed along the front and rear longitudinal ends of the crotch portion, wherein the crotch fastening member base is only partially bonded (WGB) to the remainder of the crotch portion to form an inner pocket (38WG) opening proximally. This inner pocket (38WG) made from the crotch fastening member base may be disposed on the rear side, the front side, or both the front and rear sides. Reference Figure 4F , Figure 7D and Figure 7E The crotch fastening component base can extend proximally, allowing the inner pouch to overlap with the absorbent core for improved containment. (Reference) Figure 2B , Figure 2E and Figure 7D The belt portion 40 may be provided with a notch (108). This notch (108) may be provided on the belt portion (40) which is intended to be attached to a crotch fastening member (33CL) having an inner pocket (38WG). The combination of the notch (108) and the inner pocket (38WG) allows the base of the crotch fastening member to have space to be lifted from the top piece (24), thereby providing good accommodation.

[0074] refer to Figures 7D to 7E One of the front straps may have a crotch fastening member (33CH) including a hook, and the other of the front or rear straps may have a crotch fastening member (33CL) including a loop; wherein each of the crotch fastening members (33C) can engage with a belt fastening member (33B) on the front and rear straps respectively. Similar to the belt fastening member (33B), the front and rear sides of the crotch portion (38) can be easily distinguished by providing different crotch fastening members (33C) for the front and rear. Furthermore, refer to... Figures 9B3 to 9B5This allows the crotch portion (38) to be folded along the fold line (FL) parallel to the transverse axis TX of the crotch portion (38) after use, so that the hook on one side or the back side engages with the ring on the other side, thereby containing bodily excrement within the crotch portion (38) for disposal.

[0075] refer to Figure 6A The crotch portion (38) may also include an outer cover (42) disposed on the garment-facing side of the base (25) to give the diaper article a finished appearance. The outer cover (42) may be made of a soft nonwoven material. Exemplary outer covers (42) suitable for this document include those of trade name S31921A made of a spunbond nonwoven substrate containing PP fibers purchased from Guanhe Hygiene Products Co., Ltd; trade name A10160EJ–MALAYSIA purchased from Fibertex NiLai Malaysia; and trade name SM1104174 purchased from FQN Hazlet NJ.

[0076] Methods for assembling absorbent fabrics

[0077] refer to Figures 1A to 1G and Figures 7A to 7E The present invention relates to a method for assembling a trouser absorbent article (20) worn on a wearer, the trouser absorbent article comprising a strap portion (40) and a crotch portion (38), the strap portion (40) and the crotch portion (38) being detachable from each other by a hook-and-loop fastening system and having a longitudinal direction and a transverse direction, the strap portion (40) being elastic in the transverse direction and having a strap fastening member (33B) disposed on the side facing the garment, the crotch portion (38) including a crotch fastening member (33C) disposed on the side facing the wearer and provided in a folded state, wherein the folded state is achieved by folding the crotch portion (38) along a fold line parallel to the longitudinal axis, such that the crotch fastening member (33C) is covered, the method comprising the following steps:

[0078] 1) Put the strap part (40) on the wearer's torso;

[0079] 2) Insert the crotch portion (38) between the wearer's legs;

[0080] 3) Unfold the crotch portion (38) to expose the crotch fastening component (33C); and

[0081] 4) Attach the crotch fastening component (33C) to the belt fastening component (33B).

[0082] First, the crotch fastening member (33C) on the front region (26) can be exposed and attached to the belt fastening member (33B), and then the crotch fastening member (33C) on the rear region (28) can be exposed and attached to the belt fastening member (33B).

[0083] The method of the present invention may include providing a strap portion (40) including a marking and a crotch portion (38) including a crotch marking, wherein the strap marking and / or crotch marking are configured to facilitate attachment of the strap portion (38) and the crotch portion (40) to a desired location, wherein the method includes matching the crotch marking with the strap marking. Preferably, the strap marking and crotch marking serve as visual guides for attaching the strap fastening members and the crotch fastening members (33B, 33C). Reference Figures 1B to 1G and Figures 8A to 8C The markings may be provided in a different color or texture than the rest of the band (40). (See reference) Figure 8A The band mark and crotch mark can be provided in different patterns divided by a longitudinal axis, such that the longitudinal axis of the band mark and the longitudinal axis of the crotch mark can be aligned. (Reference) Figure 8B Markers and crotch marks can be set with lines and signals to indicate how they can be aligned or form a complete shape. (Reference) Figure 8C When providing variations of the crotch portion (38) that can be matched with a belt portion (40), such as a crotch portion with lower capacity for daytime use and a crotch portion with higher capacity for nighttime use, visual crotch markings can be provided for each variation of the crotch portion (38). The belt markings and crotch markings for matching the front and rear sides can be different.

[0084] The assembled trouser absorbent article (20) may have a waist force measured according to the full article force described herein, which does not exceed about 9 N or about 8 N. The belt portion (40) may also have the same waist force.

[0085] Packaging including belt and crotch sections

[0086] refer to Figures 9A1 to 9B5 As explained above, the strap portion (40) and crotch portion (38) of the present invention can be stacked, folded, or rolled up to facilitate the storage of one or more portions in primary packaging. The fastening components (33B, 33C) can be used as foldable attachments to maintain the folded state while also preserving the functionality of the fastening components (33B, 33C) for use. In particular, portions with fastening components (33B, 33C) including hooks can be handled carefully so that the hooks do not prematurely damage any other part of the product.

[0087] refer to Figure 9B1 and Figure 9B2When the crotch fastening component (33CH) includes hooks on both the front and rear sides, the crotch portion (38) can be folded along the longitudinal axis, such that the hooks from the left and right sides attach to each other. Therefore, the hooks... Figure 9B1 It remains within the crotch portion (38) after one fold, so that the crotch portion after one fold can be as... Figure 9B2 The second fold is performed safely, without the hook coming into contact with any other surface. Similarly, refer to... Figure 9A4 and Figure 9A5 When the fastening component (33BH) includes hooks on both the front and rear sides, the belt portion (40) can be folded along the longitudinal axis so that the hooks attach to each other.

[0088] For hygiene and privacy purposes, each of the strap portion (40) and the crotch portion (38) may also be housed in a separate primary package. Specifically, the crotch portion (38) may be housed in a separate primary package, such as wrapping paper or a bag. Alternatively, see reference... Figure 9C1 and Figure 9C2 The strap portion (40) and the crotch portion (38) can be combined to provide a travel kit or trial kit. The elastic strap portion (40) can easily wrap around multiple crotch portions (38).

[0089] Peel strength measurement

[0090] 1. Preparation of finished product samples

[0091] The samples used for the measurements below were taken from three finished product sections.

[0092] To measure the crotch portion (38), use the crotch portion (38) in its folded state as is, wherein there is a hook or adhesive part inside the folded crotch portion (38). To obtain a test sample, identify the longitudinal direction of the crotch portion (38) and stretch the crotch portion (38) in the longitudinal direction such that any longitudinally extending elastomer (such as a hoop elastic member) is fully stretched, and then attach the crotch portion (38) to a suitable plate having at least one area of ​​the fully stretched article via any attachment means (such as tape, adhesive, hook, etc.). Identify the front and / or rear sides attached by the folded attachment part. Cut with scissors in the transverse direction 10 cm from the longitudinal edge of the side with the folded attachment part. The portion exposed by such a cut is the measuring edge. Remove the obtained portion from the attachment plate while keeping the folded attachment part in place.

[0093] To measure the belt section (40), use the belt section (40) with hooks in its folded state as is. (The belt section excluding the folded attachment is not subject to this test.) To obtain a test sample, cut the belt section (40) along the side seam (32) to obtain the front and rear belts. Cold spray can be used, but care should be taken not to create wrinkles in the belt section (40) or to spray onto any elastic members. If the folded attachment is present only on the front or rear belt, the corresponding belt section should be tested. If the folded attachment is present on both the front and rear belts, both sections should be tested. Measure 10 mm laterally from the end of the folded attachment toward the side seam, and then cut longitudinally with scissors. The section with the folded attachment exposed by such a cut is the measurement edge.

[0094] 2. MTS Test Setup and Measurement

[0095] An MTS Criterion Model 42 running TW Elite 4.3.1.375 software, equipped with a standard tensiometer or equivalent, was used as the instrument. All tests were performed indoors at 23°C ± 2°C and 50% ± 5% relative humidity.

[0096] The initial distance between the upper and lower clamps was set to 10 mm. The sample was positioned with its surface parallel to the ground, and the upper and lower clamps each clamped one side of the sample along their respective lateral edges. A constant elongation rate of 200 mm / min was applied. Elongation measurements were taken from the point where the program began. The upper clamp began to move upwards while the lower clamp remained stationary, thus unfolding the folding attachment. The program stopped until the upper clamp had moved 120 mm. The machine continuously measured the force (N) at a sampling rate of 50 Hz.

[0097] Peak force is the maximum force value observed during the measurement process. Measurement results from 3 samples were obtained and averaged with an accuracy of 0.01 N.

[0098] Full-product force measurement

[0099] Forces were measured on absorbent articles (20) with sections (40) or assembly using TestWorks 4 software (purchased from MTS SYSTEMS (CHINA) CO., LTD) and an electronic tension tester or equivalent instrument with a computer interface such as the MTS Criterion C42. A load cell was selected such that the force result of the tested sample would fall between 10% and 90% of the capacity of the load cell used. The instrument was calibrated according to the manufacturer's instructions. All tests were performed indoors at 23°C ± 2°C and 50% ± 5% relative humidity.

[0100] The tension tester is equipped with a hanging sample holder (300), such as Figure 10 As shown. Each fixture includes a rigid, linear, rubber-coated horizontal bar segment (302) to prevent sample slippage during testing. The outer diameter of the horizontal bar segment (including the rubber coating) is 10.0 mm. The central axis of the horizontal bar segment (302) is configured to remain parallel and in the same vertical plane throughout the testing process. The gauge length perimeter is determined by the following formula:

[0101] Gauge length perimeter = 2 × (H + D + D / 2)

[0102] Where H is the vertical gap between the horizontal bar segments (302), and D is the outer diameter of the bar.

[0103] The instrument is set up by following these steps:

[0104]

[0105] Insert the sample of the absorbent article (20) with section (40) or assembly onto the upper horizontal bar segment (302) so that the bar passes through the waist opening and one leg opening of the article. Raise the chuck until the sample is suspended above the lower bar and does not contact the lower bar (302). Adjust the load sensor and lower the chuck so that the lower bar (302) is inserted through the waist opening and the other leg opening, but without stretching the article. Adjust the article so that the longitudinal centerline LX of the article is in the horizontal plane between the upper and lower bars (302). The center of the side in contact with the bar (302) is located on the same vertical axis as the instrument load sensor. Raise the chuck slowly while holding the article in place by hand as needed until the force is between 0.05N and 0.1N, while being careful not to add any unnecessary force. The gauge length circumference at this point is the initial gauge length circumference. Start the test and move the chuck upward at 254mm / min until a force of 19.6N is obtained, then the chuck immediately returns to the initial gauge length circumference at the same speed. Record the maximum circumference at 19.6 N and the force at 70% of the maximum circumference during the loading and unloading phases of the test.

[0106] The maximum circumference at 19.6 N is defined as the full tensile circumference (mm). Full tensile circumference (mm) × 0.7 is defined as the 70% tensile circumference. Waist force is defined as the force at 70% tensile circumference during the load (tensile) segment of the test. Five samples are analyzed, and their average values ​​are calculated and reported separately, accurate to 0.01 N.

[0107] Belt tensile stress measurement

[0108] This measurement is only provided for the strip portion (40) including the anchorage zone (104), which comprises reinforcing material (40R). Tensile stress (N / m) is calculated by dividing the tension (N) by the sample width (m). Force can be measured using an electronic tension tester or equivalent instrument with a computer interface such as the MTS Criterion C42, running TestWorks 4 software (available from MTS SYSTEMS (CHINA) CO., LTD). Select a load cell such that the force result of the tested sample will be between 10% and 90% of the load cell's capacity. Calibrate the instrument according to the manufacturer's instructions. All tests are performed indoors at 23°C ± 2°C and 50% ± 5% relative humidity. The instrument is equipped with a single-line contact clamp at least as wide as the test sample.

[0109] To obtain the test sample, the sample band portion (40) is cut along the side seam (32) to obtain the front and rear bands. Cold spraying can be used, but care should be taken not to create wrinkles in the band portion (40). Care should be taken not to spray onto any elastic member (96). According to the invention, the obtained elastic band sample is cut into the anchoring area, waist area, and belly area (104, 102, 106), taking care not to cut any elastic member (96). Before testing, the sample is preconditioned for two hours at 23°C ± 2°C and 50% ± 5% relative humidity.

[0110] The instrument is set up according to the following steps. The initial gauge length is calculated from the initial gauge length perimeter measured during the full-product force test using a separate identical product as described above. Initial gauge length = 0.5 × initial gauge length perimeter. The final gauge length is calculated from the full tensile perimeter measured during the full-product force test as described above.

[0111]

[0112] Clamp one end of the sample into the upper clamp and apply a balanced load. Clamp the other end of the sample into the lower clamp. Approximately 5 mm of each end of the sample should be behind the contact line of the clamps. Begin the test and extend the sample to the final gauge length at a clamping speed of 254 mm / min, then immediately return it to the initial gauge length at the same speed. During the test, the sample extends laterally along the article. Record the unloading force at 70% of the final gauge length during the unloading phase of the test.

[0113] For each zone, five band sections were analyzed and the unloading forces were recorded. The average tensile force (N) was calculated for each zone to be as close as 0.01 N. The tensile stress in each zone was calculated and reported by dividing the average tension (N) by the average sample width (m), accurate to 0.1 N / m.

[0114] Bending force measurement

[0115] This measurement is provided only for the strip portion (40) including the anchorage zone (104), which comprises reinforcing material (40R). As the equipment, a TA (Texture Analyzer) or equivalent instrument from TAXT plus Stable Microsystems is used. The texture analyzer is equipped with a 3-point bending blade and a bending bridge, such as... Figure 11A and Figure 11B As shown. Reference Figure 11A The curved blade has a dimension W of 70mm and a dimension T of 3mm. (Reference) Figure 11B The dimension G is 10mm. Calibrate the instrument according to the manufacturer's instructions. All tests were performed indoors at 23℃±2℃ and 50%±5% relative humidity.

[0116] In order to obtain test samples, the strip portion (40) was cut into sections in the same manner as the above-described method for measuring tensile stress in the strip area.

[0117] The initial instrument settings are shown in the table below. Draw a center line along the length of the sample. Reference Figure 11C Place the prepared sample between the bending blade and the bridge, ensuring the top bending blade is aligned with the centerline. Set the chuck stroke to compress the sample article until the stroke reaches the target distance of 13 mm, then return to the initial position. Analyze five samples. Calculate and report the peak bending load, accurate to 0.01 N.

[0118]

[0119] Example

[0120] The following combination of strap portion (40) and crotch portion (38) is obtained. The crotch portion (38) is provided in a folded state by folding along the longitudinal axis using a specific folding attachment member as follows. The strap portion (40) and crotch portion (38) of each embodiment are assembled into a trouser absorbent article according to the assembly method according to the invention.

[0121]

[0122] size

[0123]

[0124] Peel force measurement

[0125]

[0126] Tensile and bending force measurement

[0127]

[0128] The strap portion (40) can be easily put on by the wearer, and the crotch portion (38) in the folded state can be easily unfolded. The strap portion (40) and crotch portion (38) of each embodiment of the absorbent trousers assembled according to the method of the invention provide the basic functions of the absorbent trousers, such as good capacity, leak-proofness and wearing comfort.

[0129] Claims Group Embodiment A

[0130] 1. A trouser absorbent article comprising a strap portion and a crotch portion, the strap portion and the crotch portion being detachable from each other to provide the absorbent article, the absorbent article having a longitudinal direction and a transverse direction.

[0131] The belt portion has a front belt and a back belt, the belt portion is elastic in the lateral direction and includes a pair of side seams having a seam length LS, the front belt and the back belt each include a belt fastening member disposed on the garment-facing side, the belt fastening member including a hook capable of engaging with a crotch fastening member;

[0132] The crotch portion includes a water-permeable top sheet, a water-impermeable bottom sheet, an absorbent core disposed between the top sheet and the bottom sheet, and a crotch fastening member disposed on the side facing the wearer, the crotch fastening member including a ring.

[0133] 2. The absorbent trousers article of claim 1, wherein the crotch portion is provided in a folded state, wherein the folded state is achieved by folding the crotch portion along a fold line parallel to the longitudinal axis.

[0134] 3. The absorbent trousers article of claim 2, wherein the crotch portion is held in the folded state by a folded attachment member having a peel strength of about 0.3N to about 10N, preferably about 1N to about 5N.

[0135] 4. The absorbent trousers article of claim 3, wherein the folded attachment is provided by ultrasonic welding.

[0136] 5. The absorbent trousers article according to any one of the preceding claims, wherein the belt portion is not elastic in the area overlapping with the belt fastening member.

[0137] 6. The absorbent trousers article according to any one of the preceding claims, wherein the band portion is formed of a front band and a back band, each of the front band and the back band being divided into a plurality of zones, the plurality of zones spanning in the lateral direction and defined by a percentage of their position from the distal edge to the proximal edge relative to the seam length LS, wherein the distal edge is considered to be 0% and the proximal edge is considered to be 100%, wherein the band portion comprises:

[0138] A fastening zone that matches the position of the fastening component, wherein the tensile stress in the fastening zone is not higher than the tensile stress in the other zones.

[0139] 7. The absorbent trousers article of claim 6, wherein the front band and the rear band each include an upper region distal to the fastening area and a lower region proximal to the fastening area, wherein the upper region, the fastening area, and the lower region have substantially the same tensile stress.

[0140] 8. The absorbent trousers article according to any one of the preceding claims, wherein the belt fastening member comprises transverse elements and longitudinal elements that are continuous with each other.

[0141] 9. The absorbent trousers article according to any one of the preceding claims, wherein the belt fastening member is disposed on no more than about 50% of the lateral dimension of the belt portion, preferably on no more than about 30% of the lateral dimension of the belt portion.

[0142] 10. The absorbent trousers article according to any one of the preceding claims, wherein the crotch fastening member is a base disposed along the front longitudinal end and the rear longitudinal end of the crotch portion, wherein at least one of the crotch fastening member bases on the front or rear side is partially bonded to the remainder of the crotch portion to form a pouch opening to the proximal side.

[0143] 11. The absorbent trousers article of claim 10, wherein the bag is stacked with the absorbent core.

[0144] 12. The absorbent trousers article of claim 10 or 11, wherein the band portion includes a concave notch on the proximal side of the front band and / or the rear band.

[0145] Claims Group Embodiment B

[0146] 1. A trouser absorbent article comprising a strap portion and a crotch portion, the strap portion and the crotch portion being detachable from each other by a hook-and-loop fastening system for providing the absorbent article, the absorbent article having a longitudinal direction and a transverse direction.

[0147] The belt portion has a front belt and a back belt, the belt portion is elastic in the lateral direction and includes a pair of side seams having a seam length LS, the front belt and the back belt each include a belt fastening member disposed on the side facing the garment, the belt fastening member includes a hook on one of the front belt and the back belt, and the belt fastening member includes a loop on the other of the front belt or the back belt;

[0148] The crotch portion includes a water-permeable top sheet, a water-impermeable bottom sheet, an absorbent core disposed between the top sheet and the bottom sheet, and a crotch fastening member disposed on the side facing the wearer, wherein the front and rear crotch fastening members are each capable of engaging with the belt fastening member.

[0149] 2. The absorbent trousers article of claim 1, wherein the crotch portion is provided in a folded state, wherein the folded state is achieved by folding the crotch portion along a fold line parallel to the longitudinal axis, such that the hooks on the front or rear sides face each other.

[0150] 3. The absorbent trousers article according to any one of the preceding claims, wherein the strap is provided in a folded state, wherein the folded state is achieved by folding the strap portion such that one of the front strap and the rear strap, including the hooks, is folded inward against the longitudinal axis in a line-symmetrical manner, such that the hooks face each other.

[0151] 4. The absorbent trousers article according to claim 2 or 3, wherein the folded state of the strap portion or the crotch portion is maintained by attachment of the hook, wherein the attachment has a peel strength of about 0.3N to about 10N, preferably about 1N to about 5N.

[0152] 5. The absorbent trousers article according to any one of the preceding claims, wherein the strap portion includes a strap mark, the crotch portion includes a crotch mark, wherein the strap mark and / or the crotch mark are configured to facilitate attachment of the strap portion and the crotch portion to a desired location, wherein the method includes matching the crotch mark with the strap mark, wherein the marks for matching the front side and the rear side are different.

[0153] 6. A method of providing the crotch portion of a trouser absorbent article according to any one of claims 1 to 5, wherein the crotch portion is folded along a transverse axis such that the hook on one of the front side or the rear side engages with the loop on the other side.

[0154] Claims Group Embodiment C

[0155] 1. A kit for providing a trouser absorbent article, the kit comprising a strap portion and a crotch portion, the strap portion and the crotch portion being detachable from each other by a hook-and-loop fastening system for providing the absorbent article, the absorbent article having a longitudinal direction and a transverse direction.

[0156] The belt portion has a front belt and a rear belt, the belt portion is elastic in the lateral direction and includes a pair of side seams with a seam length LS, the front belt and the rear belt each include a belt fastening member disposed on the side facing the garment, the belt fastening member forming a part of the fastening system that can engage with the crotch fastening member;

[0157] The crotch portion includes a water-permeable top sheet, a water-impermeable bottom sheet, an absorbent core disposed between the top sheet and the bottom sheet, and a crotch fastening member disposed on the side facing the wearer.

[0158] The crotch portion is provided in a folded state, wherein the folding state is achieved by folding the crotch portion along a folding line parallel to the longitudinal axis.

[0159] 2. The kit of claim 1, wherein the crotch portion is held in the folded state by a foldable attachment member having a peel strength of about 0.3N to about 10N, preferably about 1N to about 5N.

[0160] 3. The kit according to claim 1 or 2, wherein the strip portion is held in the folded state by a foldable attachment member having a peel strength of about 0.3N to about 10N, preferably about 1N to about 5N.

[0161] 4. The kit according to any one of the preceding claims, wherein the strap portion includes a strap mark, the crotch portion includes a crotch mark, and wherein the strap mark and / or the crotch mark are configured to facilitate attachment of the strap portion and the crotch portion to a intended location.

[0162] 5. A package comprising a kit according to any one of the preceding claims, the kit comprising a first plurality of said strap portions and a second plurality of said crotch portions, wherein the second plurality is larger than the first plurality.

[0163] 6. A package comprising the kit according to claims 1 to 4, wherein the strap portion covers the crotch portion.

[0164] Claims Group Embodiment D

[0165] 1. A method for assembling a trouser absorbent article worn by a wearer, the trouser absorbent article comprising a strap portion and a crotch portion, the strap portion and the crotch portion being detachable from each other by a hook-and-loop fastening system and having longitudinal and transverse directions.

[0166] The strap portion is elastic in the lateral direction and has a strap fastening component on the side facing the clothing.

[0167] The crotch portion includes a crotch fastening member disposed on the wearer-facing side and provided in a folded state, wherein the folded state is achieved by folding the crotch portion along a fold line parallel to the longitudinal axis, thereby covering the crotch fastening member.

[0168] The method includes the following steps:

[0169] 1) The strap portion is threaded onto the wearer's torso;

[0170] 2) Insert the crotch portion between the wearer's legs;

[0171] 3) Unfold the folded state of the crotch portion to expose the crotch fastening component; and

[0172] 4) Attach the crotch fastening component to the belt fastening component.

[0173] 2. The method of claim 1, wherein the crotch portion includes a front region, a central region, and a rear region, each of the front region, the central region, and the rear region extending one-third of the longitudinal dimension of the crotch portion, wherein the crotch fastening member on the front region is exposed and attached to the belt fastening member, and subsequently the crotch fastening member on the rear region is exposed and attached to the belt fastening member.

[0174] 3. The method according to claim 1 or 2, wherein the crotch portion is held in the folded state by a foldable attachment member having a peel strength of about 0.3N to about 10N, preferably about 1N to about 5N.

[0175] 4. The method according to any one of the preceding claims, wherein the strap portion includes a strap mark, the crotch portion includes a crotch mark, wherein the strap mark and / or the crotch mark are configured to facilitate attachment of the strap portion and the crotch portion to a desired location, wherein the method includes matching the crotch mark with the strap mark.

[0176] 5. The method according to any one of the preceding claims, wherein the crotch portion includes the finger pocket facing the garment side, the finger pocket overlapping the crotch fastening member, wherein the method further includes inserting a finger into the finger pocket and pressing the crotch fastening member against the belt fastening member.

[0177] Claims Group Embodiment E

[0178] 1. A strap portion for wearing on the torso of a wearer to form a trouser absorbent article together with a crotch portion, the strap portion having a longitudinal direction and a transverse direction and being elastic in the transverse direction, the strap portion comprising a strap fastening member detachable from the crotch portion disposed on the side facing the garment and a pair of side seams having a seam length LS, wherein the strap portion is made of a durable material selected from the group consisting of: cotton, linen, wool, bamboo, hemp, silk, rayon, polyester, nylon, spandex, and combinations thereof.

[0179] 2. The strip portion of claim 1, wherein the strip portion is formed by a front strip and a rear strip, each of the front strip and the rear strip being divided into a plurality of zones, the plurality of zones spanning in the lateral direction and defined by a percentage of their position from the distal edge to the proximal edge relative to the seam length LS, wherein the distal edge is considered to be 0% and the proximal edge is considered to be 100%, wherein the strip portion further comprises:

[0180] An anchoring zone comprising reinforcing material located on the wearer-facing side of the band portion, the reinforcing material being positioned at approximately 0% to approximately 70%, preferably approximately 20% to approximately 60% of the seam length LS, wherein the band fastening member overlaps with the anchoring zone; and

[0181] Abdominal region, located proximal to the anchorage region, wherein the anchorage region has a tensile stress of at least 1.5 times that of the abdominal region.

[0182] 3. The band portion according to claim 2, wherein the anchoring zone has a bending force of at least twice that of the abdominal zone.

[0183] 4. The band portion according to any one of the preceding claims, wherein the front band includes a proximal concave notch.

[0184] 5. The belt portion according to any one of the preceding claims, wherein the rear belt includes a proximal concave notch.

[0185] 6. The belt portion according to any one of the preceding claims, wherein the belt fastening components constitute a fastening system selected from the group consisting of hooks and loops, buttons and buttonholes, zippers, hooks and chain links, and combinations thereof.

[0186] 7. The belt portion according to claim 6, wherein the belt fastening member is disposed at approximately 10% to approximately 100% of the LS, preferably at approximately 15% to approximately 85% of the LS.

[0187] Claims group embodiment F

[0188] 1. A strap portion for wearing on the torso of a wearer to form a trouser absorbent article together with a crotch portion, the strap portion having a longitudinal direction and a transverse direction and being elastic in the transverse direction, the strap portion including a strap fastening member disposed on the side facing the garment and detachable from the crotch portion and a pair of side seams having a seam length LS, wherein the strap fastening member includes a hook of a hook-and-loop fastening system.

[0189] 2. The belt portion according to claim 1, wherein the belt fastening member is positioned away from the side seam.

[0190] 3. The belt portion according to claim 1 or 2, wherein the belt fastening member is disposed on no more than about 50% of the lateral dimension of the belt portion, preferably on no more than about 30% of the lateral dimension of the belt portion.

[0191] 4. The belt portion according to any one of the preceding claims, wherein the belt portion is not elastic in the region overlapping with the belt fastening member.

[0192] 5. The strip portion according to any one of the preceding claims, the strip portion being formed of a front strip and a rear strip, each of the front strip and the rear strip being divided into a plurality of zones, the plurality of zones spanning in the lateral direction and defined by a percentage of their position from a distal edge to a proximal edge relative to the seam length LS, wherein the distal edge is considered 0% and the proximal edge is considered 100%, wherein the strip portion further comprises:

[0193] A fastening zone that matches the position of the fastening component, wherein the tensile stress in the fastening zone is not higher than the tensile stress in the other zones.

[0194] 6. The belt portion according to claim 5, wherein the front belt and the rear belt each include an upper region distal to the fastening region and a lower region proximal to the fastening region, wherein the upper region, the fastening region, and the lower region have substantially the same tensile stress.

[0195] 7. The belt portion according to any one of the preceding claims, wherein the belt fastening member comprises transverse elements and longitudinal elements that are continuous with each other.

[0196] 8. The belt portion according to any one of the preceding claims, wherein the belt fastening member is disposed on no more than about 50% of the lateral dimension of the belt portion, preferably on no more than about 30% of the lateral dimension of the belt portion.

[0197] 9. The strap portion according to any one of the preceding claims, wherein the strap is provided in a folded state, wherein the folded state is achieved by folding each of the front strap and the rear strap inward against a longitudinal axis in a line-symmetrical manner, such that the hooks on one side of the strap portion face each other.

[0198] 10. The strap portion of claim 9, wherein the strap portion is held in the folded state by attachment of the hook, the attachment having a peel strength of about 0.3N to about 10N, preferably about 1N to about 5N.

[0199] 11. The band portion according to any one of the preceding claims, wherein the abdominal region of the front band includes a proximal concave notch.

[0200] 12. The belt portion according to any one of the preceding claims, wherein the abdominal region of the rear belt includes a proximal concave notch.

[0201] Claims Group Embodiment G

[0202] 1. A strap portion for wearing on the wearer's torso to form a trouser absorbent article together with a crotch portion, the strap portion having a longitudinal direction and a transverse direction and being elastic in the transverse direction, the strap portion including a strap fastening member disposed on the side facing the garment and detachable from the crotch portion, and a pair of side seams having a seam length LS.

[0203] The belt portion is formed by a front belt and a rear belt, each of which is divided into multiple zones that span in the lateral direction and are defined by the percentage of their position from the distal edge to the proximal edge relative to the seam length LS, wherein the distal edge is considered to be 0% and the proximal edge is considered to be 100%, wherein the belt portion also includes a fastening zone that matches the position of the belt fastening member, wherein the tensile stress of the fastening zone is not higher than the tensile stress of the remaining zones.

[0204] 2. The belt portion according to claim 1, wherein the front belt and the rear belt each include an upper region distal to the fastening region and a lower region proximal to the belt fastening region, wherein the upper region, the fastening region, and the lower region have substantially the same tensile stress.

[0205] 3. The belt portion according to claim 1 or 2, wherein the belt fastening member is disposed on no more than about 50% of the lateral dimension of the belt portion, preferably on no more than about 30% of the lateral dimension of the belt portion.

[0206] 4. The belt portion according to any one of the preceding claims, wherein the belt portion is not elastic in the region overlapping with the belt fastening member.

[0207] 5. The belt portion according to any one of the preceding claims, wherein the belt fastening member comprises transverse elements and longitudinal elements that are continuous with each other.

[0208] 6. The belt portion according to any one of the preceding claims, wherein the belt fastening component comprises a hook of a hook-and-loop fastening system.

[0209] Claims group embodiment H

[0210] 1. A strap portion for wearing on the torso of a wearer to form a trouser absorbent article together with a crotch portion, the strap portion having a longitudinal direction and a transverse direction, the strap portion including a strap fastening member disposed on the side facing the garment and detachable from the crotch portion and a pair of side seams having a seam length LS, wherein the strap portion is given elasticity by elastic strands having a density of about 30 dtex to about 400 dtex extending in the transverse direction.

[0211] 2. The strip portion of claim 1, wherein the strip portion is formed by a front strip and a rear strip, each of the front strip and the rear strip being divided into a plurality of zones, the plurality of zones spanning in the lateral direction and defined by a percentage of their position from the distal edge to the proximal edge relative to the seam length LS, wherein the distal edge is considered to be 0% and the proximal edge is considered to be 100%, wherein the strip portion further comprises:

[0212] An anchoring zone comprising reinforcing material located on the wearer-facing side of the band portion, the reinforcing material being positioned at approximately 0% to approximately 70%, preferably approximately 20% to approximately 60% of the seam length LS, wherein the band fastening member overlaps with the anchoring zone; and

[0213] Abdominal region, located near the anchorage region, wherein the anchorage region has a tensile stress at least 1.5 times the tensile stress of the abdominal region.

[0214] 3. The band portion according to claim 2, wherein the anchoring zone has a bending force of at least twice that of the abdominal zone.

[0215] 4. The belt portion according to claim 2 or 3, wherein the belt fastening member is disposed at approximately 10% to approximately 100% of the LS, preferably at approximately 15% to approximately 85% of the LS.

[0216] 5. The tape portion of claim 1, wherein the tape portion is formed of a front tape and a rear tape, each of the front tape and the rear tape being divided into a plurality of zones, the plurality of zones spanning in the lateral direction and defined by a percentage of their position from the distal edge to the proximal edge relative to the seam length LS, wherein the distal edge is considered 0% and the proximal edge is considered 100%, wherein the tape portion further comprises:

[0217] A fastening zone that matches the position of the fastening component, wherein the tensile stress in the fastening zone is not higher than the tensile stress in the other zones.

[0218] 6. The belt portion according to claim 5, wherein the front belt and the rear belt each include an upper region distal to the fastening area and a lower region proximal to the belt fastening area, wherein the upper region, the fastening area, and the lower region have substantially the same tensile stress.

[0219] 7. The belt portion according to claim 5 or 6, wherein the belt fastening member is disposed on no more than about 50% of the lateral dimension of the belt portion, preferably on no more than about 30% of the lateral dimension of the belt portion.

[0220] Claims Group Embodiment I

[0221] 1. A strap portion for wearing on the wearer's torso to form a trouser absorbent article together with a crotch portion, the strap portion having a longitudinal direction and a transverse direction and being elastic in the transverse direction, the strap portion including a strap fastening member disposed on the side facing the garment and detachable from the crotch portion, and a pair of side seams having a seam length LS.

[0222] The fastening components described therein include transverse and longitudinal elements that are continuous with each other.

[0223] 2. The belt portion according to claim 1, wherein the belt fastening member comprises a ring, and the crotch fastening member comprises a hook.

[0224] 3. The belt portion according to claim 2, wherein the belt fastening member is disposed at approximately 10% to approximately 100% of the LS, preferably at approximately 15% to approximately 85% of the LS.

[0225] 4. The belt portion according to claim 3, wherein the area of ​​the belt fastening member is at least the same as the area of ​​the crotch fastening member.

[0226] 5. The belt portion according to claim 1, wherein the belt fastening member comprises a hook, and the crotch fastening member comprises a ring.

[0227] 6. The belt portion according to claim 5, wherein the belt fastening member is disposed on no more than about 50% of the lateral dimension of the belt portion, preferably on no more than about 30% of the lateral dimension of the belt portion.

[0228] 7. The belt portion according to claim 6, wherein the area of ​​the crotch fastening member is at least the same as the area of ​​the belt fastening member.

[0229] Claims Group Embodiment J

[0230] 1. A crotch portion for forming a trouser absorbent article together with a strap portion, the crotch portion having a longitudinal direction and a transverse direction, and comprising a water-permeable top sheet, a water-impermeable bottom sheet, an absorbent core disposed between the top sheet and the bottom sheet, and a crotch fastening member disposed on the wearer-facing side and detachable from the strap portion.

[0231] The crotch portion is provided in a folded state, wherein the folding state is achieved by folding the crotch portion along a folding line parallel to the longitudinal axis.

[0232] 2. The crotch portion according to claim 1, wherein the crotch portion is folded by a fold line matching the longitudinal axis.

[0233] 3. The crotch portion according to claim 1 or 2, wherein the crotch portion is folded by two fold lines parallel to the longitudinal axis.

[0234] 4. The crotch portion according to any one of the preceding claims, wherein the crotch portion is held in the folded state by a foldable attachment member having a peel strength of about 0.3N to about 10N, preferably about 1N to about 5N.

[0235] 5. The crotch portion according to any one of the preceding claims, wherein the crotch fastening member comprises a continuous transverse element extending in the transverse direction adjacent to the longitudinal end of the crotch portion and a longitudinal element extending in the longitudinal direction adjacent to the transverse edge of the crotch portion.

[0236] 6. The crotch portion according to claim 5, wherein the longitudinal element is continuous with the transverse element.

[0237] 7. The crotch portion according to claim 5 or 6, wherein the longitudinal element is positioned away from the longitudinal edge of the crotch portion, and the transverse element is positioned away from the transverse edge of the crotch portion.

[0238] 8. The crotch portion according to any one of the preceding claims, wherein the crotch portion includes a front region, a central region, and a rear region, the front region, the central region, and the rear region each extending one-third of the longitudinal dimension of the crotch portion, wherein the lateral dimension of the central region is smaller than that of the front region or the rear region, the longitudinal edge of the front region is concave, and the longitudinal edge of the rear region is concave.

[0239] 9. The crotch portion according to any one of the preceding claims, wherein the belt fastening member comprises a ring, and the crotch fastening member comprises a hook.

[0240] 10. The crotch portion according to claim 9, wherein the area of ​​the crotch fastening member is not greater than the area of ​​the belt fastening member.

[0241] 11. The crotch portion according to claim 9 or 10, wherein the crotch fastening member is the foldable attachment member.

[0242] 12. The crotch portion according to any one of claims 9 to 11, wherein the crotch fastening member does not overlap with the absorbent core.

[0243] Claims Group Example K

[0244] 1. A crotch portion for forming a trouser absorbent article together with a belt portion, the crotch portion having a longitudinal direction and a transverse direction, and including a water-permeable top sheet, a water-impermeable bottom sheet, an absorbent core disposed between the top sheet and the bottom sheet, and a crotch fastening member disposed on the wearer-facing side and detachable from the belt portion, wherein the crotch fastening member includes a ring of a hook-and-loop fastening system.

[0245] 2. The crotch portion according to claim 1, wherein the crotch portion is provided in a folded state, the folding state being achieved by folding the crotch portion along a folding line parallel to the longitudinal axis.

[0246] 3. The crotch portion according to claim 2, wherein the crotch portion is held in the folded state by a foldable attachment member having a peel strength of about 0.3N to about 10N, preferably about 1N to about 5N.

[0247] 4. The crotch portion according to claim 3, wherein the foldable attachment is provided by ultrasonic welding.

[0248] 5. The crotch portion according to any one of the preceding claims, wherein the crotch portion includes a front region, a central region and a rear region, the front region, the central region and the rear region each extending one-third of the longitudinal dimension of the crotch portion, wherein the front region is tapered such that the longitudinal edge of the front region has a minimum lateral dimension in the front region.

[0249] 6. The crotch portion according to the preceding claim, wherein the crotch fastening member comprises a continuous transverse element extending in the transverse direction adjacent to the longitudinal end of the crotch portion and a longitudinal element extending in the longitudinal direction adjacent to the transverse edge of the crotch portion.

[0250] 7. The crotch portion according to claim 6, wherein the longitudinal element is continuous with the transverse element.

[0251] 8. The crotch portion according to any one of the preceding claims, wherein the crotch fastening member is a base disposed along the front longitudinal end and the rear longitudinal end of the crotch portion, wherein the crotch fastening member base at least in one of the front or rear is partially bonded to the remainder of the crotch portion to form a bag opening toward the proximal side.

[0252] Claims Group Embodiment L

[0253] 1. A crotch portion for forming a trouser absorbent article together with a belt portion, the crotch portion having a longitudinal direction and a transverse direction, and including a water-permeable top sheet, a water-impermeable bottom sheet, an absorbent core disposed between the top sheet and the bottom sheet, a crotch fastening member disposed on the wearer-facing side and detachable from the belt portion, and a finger pocket overlapping the crotch fastening member on the garment-facing side.

[0254] 2. The crotch portion according to claim 1, wherein the crotch portion is folded by a fold line matching the longitudinal axis.

[0255] 3. The crotch portion according to claim 2, wherein the crotch portion is held in the folded state by a foldable attachment member having a peel strength of about 0.3N to about 10N, preferably about 1N to about 5N.

[0256] 4. The crotch portion according to any one of the preceding claims, wherein the crotch fastening member comprises a continuous transverse element extending in the transverse direction adjacent to the longitudinal end of the crotch portion and a longitudinal element extending in the longitudinal direction adjacent to the transverse edge of the crotch portion, and the longitudinal element is continuous with the transverse element.

[0257] 5. The crotch portion according to claim 4, wherein the longitudinal element is positioned away from the longitudinal edge of the crotch portion, and the transverse element is positioned away from the transverse edge of the crotch portion.

[0258] 6. The crotch portion according to any one of the preceding claims, wherein the crotch portion includes a front region, a central region, and a rear region, the front region, the central region, and the rear region each extending one-third of the longitudinal dimension of the crotch portion, wherein the lateral dimension of the central region is smaller than that of the front region or the rear region, the longitudinal edge of the front region is concave, and the longitudinal edge of the rear region is concave.

[0259] 7. The crotch portion according to any one of the preceding claims, wherein the belt fastening member comprises a ring, and the crotch fastening member comprises a hook.

[0260] 8. The crotch portion according to claim 7, wherein the area of ​​the crotch fastening member is not greater than the area of ​​the belt fastening member.

[0261] 9. The crotch portion according to claim 7 or 8, wherein the area of ​​the crotch fastening member is the foldable attachment member.

[0262] 10. The crotch portion according to any one of claims 7 to 9, wherein the crotch fastening member does not overlap with the absorbent core.

[0263] Claims group embodiment M

[0264] 1. A crotch portion for forming a trouser absorbent article together with a strap portion, the crotch portion having a longitudinal direction and a transverse direction, and comprising a water-permeable top sheet, a water-impermeable bottom sheet, an absorbent core disposed between the top sheet and the bottom sheet, and a crotch fastening member disposed on the wearer-facing side and detachable from the strap portion.

[0265] The crotch fastening member is a base disposed along the front longitudinal end and the rear longitudinal end of the crotch portion, wherein at least one of the crotch fastening member bases is partially bonded to the remainder of the crotch portion to form an inner pocket with a proximal opening.

[0266] 2. The crotch portion according to claim 1, wherein the inner pocket is formed on the rear side.

[0267] 3. The crotch portion according to claim 1 or 2, wherein the inner bag overlaps with the absorbent core.

[0268] 4. The crotch portion according to any one of the preceding claims, wherein the crotch fastening component base includes a ring of a hook-and-loop fastening system.

[0269] 5. The crotch portion according to any one of the preceding claims, wherein the crotch portion is provided in a folded state, the folding state being achieved by folding the crotch portion along a fold line parallel to the longitudinal axis.

[0270] 6. The crotch portion according to claim 5, wherein the crotch portion is held in the folded state by a foldable attachment member having a peel strength of about 0.3N to about 10N, preferably about 1N to about 5N.

[0271] 7. The crotch portion according to any one of the preceding claims, wherein the crotch fastening member comprises a continuous transverse element extending in the transverse direction adjacent to the longitudinal end of the crotch portion and a longitudinal element extending in the longitudinal direction adjacent to the transverse edge of the crotch portion, and the longitudinal element is continuous with the transverse element.

[0272] The dimensions and values ​​disclosed herein should not be construed as strictly limited to the precise numerical values ​​cited. Rather, unless otherwise specified, each such dimension is intended to represent the stated value and the range surrounding its functional equivalent. For example, a dimension disclosed as “40 mm” is intended to represent “approximately 40 mm”.

[0273] Unless expressly excluded or otherwise limited, every reference cited herein, including any cross-references or related patents or patent applications, and any patent application or patent claiming priority to or benefiting from it, is incorporated herein by reference in its entirety. Reference to any reference is not an endorsement of it as prior art to any disclosed or protected art herein, nor is it an endorsement of any such invention, either on its own or in combination with any one or more references. Furthermore, where any meaning or definition of a term in this invention conflicts with any meaning or definition of the same term in referenced documents, the meaning or definition given to that term in this invention shall prevail.

[0274] While specific embodiments of the invention have been illustrated and described by way of example, it will be apparent to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. Therefore, it is intended that all such changes and modifications falling within the scope of the invention be covered by the appended claims.

Claims

1. A trouser absorbent article comprising a strap portion and a crotch portion, the strap portion and the crotch portion being detachable from each other by a hook-and-loop fastening system for providing the absorbent article, the absorbent article having a longitudinal direction and a transverse direction. The belt portion has a front belt and a back belt, the belt portion is elastic in the lateral direction and includes a pair of side seams with a seam length LS, the front belt and the back belt each include a belt fastening member facing the garment side, the belt fastening member forming a part of the fastening system that can engage with the crotch fastening member; The crotch portion includes a water-permeable top sheet, a water-impermeable bottom sheet, an absorbent core disposed between the top sheet and the bottom sheet, and a crotch fastening member disposed on the side facing the wearer. The crotch portion is provided in a folded state, wherein the folding state is achieved by folding the crotch portion along a folding line parallel to the longitudinal axis.

2. The absorbent trousers article of claim 1, wherein the crotch portion is held in the folded state by a folded attachment member having a peel strength of about 0.3N to about 10N, preferably about 1N to about 5N.

3. The absorbent trousers article according to claim 1 or 2, wherein the crotch fastening member comprises a continuous transverse element extending in the transverse direction adjacent to the longitudinal end of the crotch portion and a longitudinal element extending in the longitudinal direction adjacent to the transverse edge of the crotch portion.

4. The absorbent trousers article according to claim 3, wherein the longitudinal element is continuous with the transverse element.

5. The absorbent trousers article according to claim 3 or 4, wherein the longitudinal element is positioned away from the longitudinal edge of the crotch portion, and the transverse element is positioned away from the transverse edge of the crotch portion.

6. The absorbent trousers article according to any one of claims 1 to 5, wherein the crotch portion comprises a front region, a central region, and a rear region, the front region, the central region, and the rear region each extending one-third of the longitudinal dimension of the crotch portion, wherein the front region is tapered such that the longitudinal edge of the front region has a minimum lateral dimension in the front region.

7. The absorbent trousers article according to any one of the preceding claims, wherein the belt fastening member is positioned away from the side seam.

8. The absorbent trousers article according to any one of the preceding claims, wherein the front band includes a proximal concave notch.

9. The absorbent trousers article according to any one of the preceding claims, wherein the back band includes a concave notch on the proximal side.

10. The absorbent trousers article according to any one of the preceding claims, wherein the strap portion includes a strap mark, the crotch portion includes a crotch mark, and wherein the strap mark and / or the crotch mark are configured to facilitate attachment of the strap portion and the crotch portion to a intended location.

11. The absorbent trousers article according to any one of claims 2 to 10, wherein the belt fastening member comprises a ring, and the crotch fastening member comprises a hook.

12. The absorbent trousers article of claim 11, wherein the area of ​​the crotch fastening member is the foldable attachment member.

13. The absorbent trousers article according to any one of claims 11 to 12, wherein the area of ​​the crotch fastening member is not greater than the area of ​​the belt fastening member.

14. The absorbent trousers article according to any one of claims 11 to 13, wherein the crotch fastening member is not overlapped with the absorbent core.

15. The absorbent trousers article according to any one of the preceding claims, wherein the front band and the rear band are each divided into a plurality of zones, the plurality of zones spanning in the lateral direction and defined by a percentage of their position from the distal edge to the proximal edge relative to the seam length LS, wherein the distal edge is considered to be 0% and the proximal edge is considered to be 100%, wherein the band portion further comprises: An anchoring zone comprising reinforcing material located on the wearer-facing side of the band portion, the reinforcing material being positioned at approximately 0% to approximately 70%, preferably approximately 20% to approximately 60% of the seam length LS, wherein the band fastening member overlaps with the anchoring zone; and Abdominal region, located near the anchorage region, wherein the anchorage region has a tensile stress at least 1.5 times the tensile stress of the abdominal region.

16. The absorbent trousers of claim 15, wherein the anchoring region has at least twice the bending force of the abdominal region.

17. A method for assembling a trouser absorbent article according to any one of the preceding claims, the method comprising the following steps: 1) The strap portion is threaded onto the wearer's torso; 2) Insert the crotch portion between the wearer's legs; 3) Unfold the folded state of the crotch portion to expose the crotch fastening component; as well as 4) Attach the crotch fastening component to the belt fastening component.

18. The method of claim 17, wherein the crotch portion includes a front region, a central region, and a rear region, each of the front region, the central region, and the rear region extending one-third of the longitudinal dimension of the crotch portion, wherein the crotch fastening member on the front region is exposed and attached to the belt fastening member, and subsequently the crotch fastening member on the rear region is exposed and attached to the belt fastening member.

Images