Absorbent article with leg gasketing system

Abstract

This invention discloses a pant-style absorbent article having a skin-facing side, a clothing-facing side, a longitudinal axis, a transverse axis, a pair of longitudinally extending side edges and a pair of transversely extending end edges, a front band, and a back band. The absorbent article includes an absorbent body comprising: 1) a core base structure and 2) a leg liner system made of a pair of water-impermeable hoop materials, the pair of water-impermeable hoop materials being disposed laterally outside and wrapping around the opposite side edges of the core base structure. The leg liner system includes: 2a) a pair of wearer-facing hoop areas, formed by extending the hoop material inwardly on the wearer-facing side of the core base structure; each wearer-facing hoop area includes a longitudinally extending inner hoop. 2a) a seal and a longitudinally extending inner hoop free edge positioned inside the inner hoop seal, wherein the inner hoop seal bonds the hoop material and the top piece, and an inner hoop elastic element is disposed adjacent to the inner hoop free edge; 2b) a pair of clothing-facing hoop areas formed by extending the hoop material inward in the clothing-facing direction of the core base structure; and 2c) a pair of outer hoop elastic elements disposed on the wearer-facing hoop area or the clothing-facing hoop area, each outer hoop elastic element being configured to overlap on the core-side area and being configured to overlap the inner hoop seal or its outer side; and wherein the front band and the absorbent body are engaged in such a way that the front longitudinal end of the outer hoop elastic element under active elasticity overlaps on the front band and remains unengaged to the front band.

Description

Technical Field

[0001] The present invention relates to absorbent articles such as diapers having a leg liner system that provides improved softness, coverage, leak protection, and an improved functional and visual appearance. Background Technology

[0002] Absorbent articles having a leg liner system comprising an inner leg cuff and an outer leg cuff are well known in the art. The inner leg cuff is primarily used to prevent leakage of bodily fluids, while the outer leg cuff primarily serves to provide coverage over the inner leg cuff to minimize the visibility of fluids through it, and to provide secondary components to capture bodily fluids if they puncture the inner leg cuff. The inner leg cuff is typically made of a liquid-permeable nonwoven material and an internal leg elastic element disposed at a longitudinally extending free edge of the inner leg cuff and on the body-facing surface of the absorbent article to provide a seal against the wearer's skin. The outer leg cuff is typically made of a similar nonwoven material to the inner leg cuff and is disposed laterally outside the inner leg cuff. The outer leg cuff may also have a longitudinally extending external leg elastic element. Careful selection of the forces provided by the internal and external leg elastic elements is essential to achieve the desired seal while avoiding red marks on the wearer's skin during wear and preventing forces that could unintentionally pull the remainder of the absorbent material away from the wearer's skin. Furthermore, since the external leg cuff forms the longitudinally extending side edge of the absorbent material, its appearance can affect the overall aesthetic impression of the absorbent material. Current products on the market do not adequately meet all the diverse requirements anticipated for leg cuff systems.

[0003] Based on the foregoing, there is a need for an absorbent article with a leg lining system that provides improved tactile softness and coverage while maintaining leak-proof performance. There is also a need for an underwear-like appearance that visually suggests the function of the leg lining system. Furthermore, there is a need for a reliable and economical method of manufacturing such a wearable article. Summary of the Invention

[0004] This invention relates to an absorbent article having a skin-facing side, a clothing-facing side, a longitudinal axis, a transverse axis, a pair of longitudinally extending side edges, and a pair of transversely extending end edges. The absorbent article includes an absorbent body, a front strap joined to the front side of the absorbent body, and a back strap joined to the rear side of the absorbent body. The transverse edges of the front strap and the transverse edges of the back strap are joined by a seam to form a waist opening and two leg openings.

[0005] Each front and rear band is formed by multiple elastomeric bodies that extend laterally and are sandwiched between the inner and outer sheets;

[0006] The absorber includes:

[0007] 1) Core foundation structure, which includes:

[0008] 1a) A liquid-permeable top sheet;

[0009] 1b) Film that is impermeable to liquids;

[0010] 1c) An absorbent core disposed between the top sheet and the bottom sheet, the absorbent core having a smaller size than the bottom sheet in both the longitudinal and transverse directions;

[0011] 1d) An outer cover, disposed on the garment-facing side of the backing sheet, having a transverse dimension larger than the absorbent core and a dimension the same as or smaller than the backing sheet in both the longitudinal and transverse directions; and

[0012] 1e) A pair of core-side regions, defined as the area between the corresponding absorber core-side edge and the film-side edge; and

[0013] 2) A leg bushing system comprising a pair of water-impermeable hoops positioned laterally outward of and wrapping around opposite edges of the core foundation structure, the leg bushing system comprising:

[0014] 2a) A pair of wearer-facing hoop areas, the pair of wearer-facing hoop areas being formed by extending hoop material inward in the wearer-facing direction on the core base structure; each of the wearer-facing hoop areas includes a longitudinally extending inner hoop seal and a longitudinally extending inner hoop free edge positioned inside the inner hoop seal, wherein the inner hoop seal bonds the hoop material and the top piece, and an inner hoop elastic element is disposed adjacent to the inner hoop free edge;

[0015] 2b) A pair of garment-facing hoop areas, formed by extending hoop material inward in the garment-facing direction on the core base structure; and

[0016] 2c) A pair of outer hoop elastic elements disposed on the hoop area facing the wearer or facing the clothing, each outer hoop elastic element being configured to overlap the core side area and to overlap the inner hoop seal or its outer side; and

[0017] The front band and the absorber body are joined in such a way that the front longitudinal end of the outer hoop elastic element under active elasticity is stacked on the front band and remains unjoined to the front band. Attached Figure Description

[0018] Figure 1 This is a perspective view of an exemplary absorbent article of the present invention. Figure 1 This is a perspective view of an exemplary absorbent article of the present invention.

[0019] Figure 2A For being in a flat, unshrunken state Figure 1 A schematic plan view of an absorbent material, showing the surface facing the clothing.

[0020] Figure 2B For being in a flat, unshrunken state Figure 1 A schematic plan view of another embodiment of the absorbent article, showing the surface facing the clothing.

[0021] Figure 2C for Figure 2A A schematic plan view of the absorbent article, which shows the other components of the article.

[0022] Figure 3A For partial interception along line TX and partial interception along Figure 2C The schematic cross-sectional view of one embodiment of the leg liner system of the present invention is taken by line TDB.

[0023] Figure 3B For along Figure 2C The schematic cross-sectional view of another embodiment of the leg liner system of the present invention is taken by line TDB.

[0024] Figure 3C This is a schematic cross-sectional view of an existing leg liner system.

[0025] Figure 4 This is a schematic diagram of an example of a hanging sample fixing fixture for “Leg Opening Measurement” according to this article.

[0026] Figures 5A to 5D This is a perspective view of an exemplary absorbent article of the present invention in a contracted state, the absorbent article having a color that coordinates with certain parts.

[0027] definition

[0028] As used herein, the following terms shall have the meanings specified below:

[0029] "Absorbent articles" refers to articles that can be worn in the form of belt diapers, trouser diapers, incontinence underwear, feminine hygiene underwear, etc. "Absorbent articles" can be constructed to absorb and contain various excretions from the body, such as urine, feces, and menstrual fluids.

[0030] "Longitudinal" refers to the direction that extends substantially perpendicularly from one waist edge of the article to the opposite waist edge and is usually parallel to the maximum linear dimension of the article.

[0031] "Horizontal" refers to the direction perpendicular to the longitudinal direction.

[0032] "Proximal" and "distal" refer to positions closer to or farther from the longitudinal center of the product, respectively.

[0033] "Inward" and "outward" refer to positions closer to or further away from the horizontal center of the product, respectively.

[0034] "Facing the body" and "facing the clothing" refer to the relative positions of components or the relative positions of the surfaces of a component or group of components, respectively. "Facing the body" means that during wear, a component or surface is closer to the wearer than some other components or surfaces. "Facing the clothing" means that during wear, a component or surface is further away from the wearer than some other components or surfaces (i.e., the component or surface is closer to the wearer's clothing, which may be worn over a disposable absorbent material).

[0035] "Setting" refers to the positioning of a component in a specific location or position.

[0036] "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.

[0037] 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.

[0038] "Water-permeable" and "water-impermeable" refer to the permeability of a material within the intended use range of a disposable absorbent article. Specifically, the term "water-permeable" refers to a layer or layered structure having pores, openings, and / or interconnected void spaces that allows liquid water, urine, or synthetic urine to pass through its thickness 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 its thickness 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".

[0039] "Extensibility" and "stretchability" mean that the width or length of a component in a relaxed state can be extended or increased.

[0040] "Elastic" and "flexible" mean that a component includes at least a portion made of an elastic material.

[0041] 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).

[0042] 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 circumference W1, which is measured according to the “Full Article Force Measurement” in this document and using a ruler or a small magnifying glass.

[0043] "Works of art" refers to visual representations observable to the naked eye, provided through printing or other means, and possessing color. Printing includes a variety of methods and equipment well known to those skilled in the art, such as offset printing, screen printing, flexographic printing, and gravure inkjet printing.

[0044] 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 the CIE L*a*b* color system, white is defined as those colors having an L* value of at least 94, an a* value equal to 0 ± 2, and a b* value equal to 0 ± 2. Detailed Implementation

[0045] refer to Figure 1The present invention relates to an absorbent article comprising an absorbent body (38), a front band (84) engaged to the front side of the absorbent body (38), and a rear band (86) engaged to the rear side of the absorbent body (38). The absorbent body (38) includes a core base structure (61) and a leg liner system (100) that provides improved softness, coverage, and leak protection. The front band (84) and the rear band (86) form an elastic band (40) that extends laterally from the front region (26) and the rear region (28) of the absorbent body (38) and is stitched together at a pair of lateral edges as a side seam (32).

[0046] refer to Figure 2A The article of the present invention has a longitudinal centerline LX, which also serves as a longitudinal axis, and a transverse centerline TX, which also serves as a transverse axis. The term "proximal" refers to being closer to the transverse centerline TX, the term "distal" refers to being further away from the transverse centerline TX, the term "inward" refers to being closer to the longitudinal centerline LX, and the term "outward" refers to being further away from the longitudinal centerline LX. The article of the present invention includes an absorbent body (38) comprising a core base structure (61) and a leg bushing system (100). Reference Figure 3A The core base structure (61) includes a liquid-permeable top sheet (58); a liquid-impermeable bottom sheet (60); an absorbent core (59) disposed between the top sheet (58) and the bottom sheet (60), the absorbent core (59) having a smaller size than the bottom sheet in both the longitudinal and transverse directions; an outer cover (42) disposed on the clothing-facing side of the bottom sheet (60), the outer cover (42) having a larger size than the absorbent core (59) in both the longitudinal and transverse directions, and having the same or smaller size than the bottom sheet (60) in both the longitudinal and transverse directions; and a pair of core side areas (62), the pair of core side areas being defined as the area between the respective absorbent core side edge (59SE) and the bottom sheet side edge (60SE).

[0047] The topsheet (58) is typically a portion of the core base structure (61) that can be positioned to at least partially contact or be adjacent to the wearer. Suitable topsheets (58) 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 (58) are typically soft, gentle to the touch, and non-irritating to the wearer's skin. Generally, topsheets (58) are liquid-permeable, allowing bodily fluids to easily permeate through the thickness of the topsheet (58). One type of topsheet (58) used herein is available 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 (58) may be coated with a lotion or skin-care composition. Examples of suitable detergents include those described in U.S. Patents 5,607,760, 5,609,587, 5,1005,191, and 5,643,588.

[0048] The backsheet (60) is positioned such that it extends beyond the absorbent core (59) in both the longitudinal and transverse directions. The backsheet (60) may be designed to prevent effluent absorbed by and contained within the absorbent core (59) from soiling articles that may come into contact with the absorbent articles, such as sheets and underwear. Generally, the backsheet (60) is substantially water-impermeable. Suitable backsheet (60) materials include membranes, such as those manufactured by Plaster Argentina under the trade name PLBA NBBS10-12GSM PR V1. Other suitable backsheet (60) materials may include breathable materials that allow vapors to escape from the absorbent articles while still preventing effluent from passing through the backsheet (60). 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 15GV7 and by Berry Nashville, TN under the trademark BR-137P V13. Such breathable composite materials are described in more detail in PCT application WO 95 / 16746 and U.S. Patent 5,865,823. Other breathable substrates, including nonwoven fiber webs and open-cell shaped membranes, are described in U.S. Patent 5,571,096. Exemplary suitable substrates are disclosed in U.S. Patent 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.

[0049] The outer cover (42) is located on the garment-facing side of the core base structure (61). The outer cover (42) may be made of a soft, nonwoven material. The outer cover (42) and the backing sheet (60) may be bonded together by adhesive or any other suitable material or method. A particularly suitable outer cover (42) may be available from Fibertex NiLai Malaysia under the trade name A10160EJ–MALAYSIA and from FQN Hazlet NJ under the trade name SM1104174.

[0050] The absorbent core (59) may include an absorbent layer and a collection layer. 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. The superabsorbent polymer of the absorbent layer may 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 may 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 / outer sheath, or island-type fibers. Such synthetic fibers may be formed via spunbonding or meltblowing. The collection layer facilitates the collection and distribution of bodily effluent and may be placed between the top sheet (58) and the absorbent layer. The collection layer may include cellulose fibers. Multiple absorbent layers may be provided in the absorbent core (59). Some portions of the absorbent layers may be configured to be substantially free of absorbent material to form one or more channels. The channels may be used to allow the absorbent core (59) to bend when swollen by a fluid, so that the absorbent article conforms to the wearer's body after swelling and prevents the article from sagging. Channels can also be formed in the acquisition layer and can be configured to at least partially match the channels of the absorption layer in the thickness direction.

[0051] refer to Figure 3A The left side shows a schematic cross-section taken along the TX direction, while the right side shows a cross-section taken along the TX direction. Figure 2C A schematic cross-section of A's TDB, with the elastic band (40) removed. (See reference) Figure 3B This is another schematic cross-section taken along the TDB, where the elastic band (40) has been removed. As described below, the line TDB exists at the location where the inner hoop (68) is bonded to the top piece (58) and the elasticity has failed. For Figures 3A to 3C All figures in the diagram are decomposed along the thickness direction. (Reference) Figures 3A to 3BThe absorbent article of the present invention comprises a leg liner system (100) made of a pair of water-impermeable hoop materials (102) disposed laterally outward and wrapping around a pair of side edges of a core base structure (61). The leg liner system (100) includes a pair of wearer-facing hoop areas (64) formed by extending the hoop materials (102) inwardly on the wearer-facing side of the core base structure (61). Each wearer-facing hoop area (64) includes a longitudinally extending inner hoop seal (68S) and a longitudinally extending inner hoop free edge (68E) positioned inwardly from the inner hoop seal (68S), wherein the inner hoop seal (68S) bonds the hoop materials (102) and the top piece (58), and an inner hoop elastic element (69) is disposed adjacent to the inner hoop free edge (68E). "Adjacent" means that the inner hoop elastic element (69) is positioned approximately 0.5 mm to approximately 3 mm from the free edge of the inner hoop (68E), or approximately 1 mm to approximately 2 mm from the free edge of the inner hoop (68E). The inner hoop seal (68S) is an adhesive component that securely bonds the hoop material (102) and the top plate (58) by means of adhesive, by thermal bonding, by ultrasonic bonding, or any combination thereof, to provide leakage protection along the side edges of the absorbent body (38).

[0052] refer to Figures 3A to 3B The leg liner system (100) also includes a pair of garment-facing hoop areas (72), formed by extending hoop material (102) inwardly on the garment-facing side of the core base structure (61), and a pair of outer hoop elastic elements (74) disposed on either the wearer-facing hoop area (64) or the garment-facing hoop area (72), the outer hoop elastic elements being stacked on the core-side area (62) and disposed outside the inner hoop seal (68S). The outer hoop elastic elements (74) may be disposed on the garment-facing hoop area (72). When the outer hoop elastic elements (74) are disposed on the garment-facing hoop area (72), the wearer-facing hoop area (64) may not contain any outer hoop elastic elements. The lateral dimension of the garment-facing hoop area (72) may be from about 10 mm to about 50 mm, or from about 20 mm to about 30 mm.

[0053] Unbound by theory, the leg liner system (100) of the present invention provides improved tactile softness and coverage, and offers a high-quality finished and underwear-like appearance, by having a pair of water-impermeable hoops (102) positioned laterally outward and wrapping around and extending inwardly into the garment-facing side of the core base structure (61). Furthermore, perceived and actual leak-proof performance is maintained by providing an outer hoop elastic element (74) to overlap the core side area (62). Moreover, these and other beneficial effects can be achieved or enhanced by adopting configurations discussed in further detail below.

[0054] refer to Figures 3A to 3B The hoop material (102) used to form the hoop area (64) facing the wearer can form a double inner hoop (68), wherein an inner hoop elastic element (69) is sandwiched between the two, wherein the outwardly folded material is bonded to the top piece (58) at the inner hoop seal (68S). Alternatively, the outwardly folded material can be bonded to the hoop material (102) between the inner hoop free edge (68E) and the inner hoop seal (68S). The inner hoop elastic element (69) can span the longitudinal length of the inner hoop (68). In other embodiments, the inner hoop elastic element (69) can span at least the longitudinal length of the inner hoop (68) within the crotch area (30). It is desirable that the inner hoop elastic element (69) exhibits sufficient elasticity so that the inner hoop (68) remains in contact with the wearer during normal wear, thereby enhancing the barrier properties of the inner hoop (68). Towards the end edge of the absorber (38), the free edge (68E) of the inner hoop can be bonded to the top plate (58) to control the length of the inner hoop (68) and the length of the inner hoop elastic element (69) under active elasticity. Reference Figure 2A The line TDB exists at the location where the inner hoop (68) is bonded to the top piece (58) and elastically fails. Such bonding of the inner hoop (68) can be provided towards both the front and rear edges of the absorber body (38).

[0055] refer to Figure 3B The hoop material (102) used to form the clothing-facing hoop area (72) is defined as the first clothing-facing fold. The hoop material (102) used to form the clothing-facing hoop area (72) may end at the innermost position of the clothing-facing hoop area (72). The side edge of the outer cover (42) may exist at a position further inward relative to the side edge of the backing sheet (60). By providing the side edges of the leg lining system with less material, this provides a soft and breathable leg lining system.

[0056] refer to Figure 3A The hoop (102) used to form the first garment fold can be further folded and extended outward to form a second garment fold, wherein an outer hoop elastic element (74) is sandwiched between the first and second garment folds. When the outer hoop elastic element (74) is a multi-strand elastic wire, all the outer hoop elastic strands (74) can be sandwiched between the first and second garment folds, such as... Figure 3A As shown, or at least one outer elastic strand (74), may be clamped between the first and second faces of the garment fold. (See reference) Figure 3A The second end edge facing the fold of the garment may exist outside the side edge of the base plate (60) and fully clamp the outer leg elastic element (74). This provides the side edge of a puffed and elastic leg lining system.

[0057] Each of the inner and outer elastic elements (69) can be an elastic membrane, one or more elastic strips, or multiple elastic strands. When multiple elastic strands are provided for an elastic element, those elastic strands having a fineness of about 310 dtex to about 680 dtex can be provided with an elongation of no more than about 330%. The elongation, "0% elongation," refers to the initial length of the elastic element. Such fineness and elongation are suitable for providing the desired force while being less irritating to the wearer and thus avoiding red marks. When the outer elastic element (74) includes one or more elastic strands, the total number of outer elastic strands (74) on one side can be at least 3. Such multiple outer elastic strands (74) can be provided with a spacing of less than about 8 mm or less than about 6 mm. Without being bound by theory, it is believed that good leakage protection can be achieved with less stress against the wearer's skin by having at least 3 outer elastic strands (74) on each side.

[0058] When the outer elastic element (74) is provided with multiple elastic strands, the force provided by the outermost outer elastic strand (74) is lower than the force provided by the innermost outer elastic strand (74). For example, if there are 3 elastic strands, the outermost strand may have a lower force compared to the remaining 2 elastic strands. For example, if there are 4 elastic strands, the outermost 2 strands may have a lower force compared to the remaining 2 elastic strands. Without being bound by theory, it is believed that by providing lower force to the outward strands, stress against the wearer is reduced and a soft fit is achieved while maintaining leak protection.

[0059] refer to Figures 3A to 3B At least three outer hoop elastic strands (74) may be present on the clothing-facing hoop area (72). This configuration provides a strip-like appearance on the clothing-facing side of the absorbent article. This is advantageous for providing an underwear-like appearance to the absorbent article. (See reference) Figure 3A Between the wearer and the outer elastic element (74), there are at least two material layers, wherein the material layers are selected from the group consisting of the hoop material (102), the top piece (58), the bottom piece (60), and the outer cover (42). By having at least two material layers between the wearer and the outer elastic element (74), this prevents the outer elastic element (74) from causing irritation or red marks on the wearer's inner thigh, which is generally a sensitive area of ​​skin.

[0060] refer to Figures 3A to 3BThe leg lining system (100) may also include side edge elastic strands (73) disposed on the outer side of the backing sheet (60). The side edge elastic strands (73) may be present at a position approximately 1 mm to 2 mm from the outer edge of the hoop (102). At least one or one to two side edge elastic strands (73) may be present on each side. Without being bound by theory, it is believed that by placing the side edge elastic strands (73) at the outermost portion of the leg lining system (100), this provides structure to the side edges of the leg lining system (100) while preventing the backing sheet (60) from being present in that position. When the backing sheet (60) extends to the outermost portion of the leg lining system (100), there is a tendency to provide a rigid feel against the wearer's thigh.

[0061] refer to Figures 2A to 2B The absorbent article of the present invention may have each front band (84) and rear band (86) formed by a plurality of elastomers (96) extending laterally between an inner piece (94) and an outer piece (92). Each front band (84) and rear band (86) has a laterally continuous proximal edge (90) and a distal edge (88), the proximal edge (90) being located closer to the longitudinal center of the article than the distal edge (88). The elastic band (40) formed by the front band (84) and rear band (86) of the present invention is used to dynamically generate a fitting force and to distribute forces dynamically generated during wear. The elasticity around the leg opening may be provided by a combination of elasticity from the front elastic band (84), the rear elastic band (86), and the leg liner system (100).

[0062] The longitudinal widths of the backing sheet (36) and the outer cover layer (42) may be the same or different. For example, the outer cover layer (42) may have a shorter length than the backing sheet (36), resulting in the absence of the outer cover layer (42) where the absorbent body (38) overlaps with the elastic band (40). With this configuration, the elastic band can have better breathability. In addition, this configuration can provide cost savings. The transverse widths of the backing sheet (36) and the outer cover layer (42) may be the same or different. For example, the backing sheet (36) may have a shorter transverse width than the outer cover layer (42). With this configuration, the longitudinal side edges (48) of the crotch piece (56), which forms part of the leg opening, can have better breathability. In addition, this configuration can provide cost savings. The backing sheet (36) may extend to the transversely extending end edge (50) of the absorbent body (38) to provide leakage protection.

[0063] refer to Figure 2AThe longitudinal length LB of the rear elastic band (86) and the longitudinal length LF of the front elastic band (84) may be the same, or the rear elastic band (86) may have a larger longitudinal length LB. When the wearable article is assembled to form a waist opening and a leg opening, the wearable article (20) is folded along the transverse centerline T1 such that the front distal edge (88) is aligned with the rear distal edge (88). The front edge (89) is also aligned with a portion of the rear edge (89). The front elastic band (84) and the rear elastic band (86) are then joined at the seam (32) at the front edge and the rear edge (89). However, the front proximal edge and the rear proximal edge (90) may not be aligned with each other. The rear proximal edge (90) may be positioned longitudinally closer to the transverse centerline T1 than the front proximal edge (90), such that the proximal portion of the rear side panel (82) extends beyond the front proximal edge (90) toward the crotch panel (56) of the body (38). The side edges of the proximal portion of the rear side panel (82) may not be joined to any part and do not contain any attachments. Therefore, the proximal portion of the rear side panel (82) provides a hip cover (95) (not shown).

[0064] The front elastic band (84) and the rear elastic band (86) are configured to impart elasticity to the band (40). The band elastomer (96) may extend in the transverse direction to provide an annular elastic band (40) when the front band (84) and the rear band (86) are engaged. At least some of the elastomers (96) extend substantially parallel to each other in the transverse direction. All elastic members (96) may extend substantially parallel to each other in the transverse direction. Such articles can be manufactured economically. At least 10%, or at least about 15% to no more than about 70%, of the front and rear bands in the longitudinal direction from the waist opening may be under active elasticity along the entire transverse dimension LW of the front band (84) and the rear band (86). For each front elastic band (84) and the rear elastic band (86), the elastic activity of the area overlapping with the front waist piece (52) and / or the rear waist piece (54) of the absorber body (38) may be removed. Such areas where elastic vitality is removed are referred to in this document as “elastic cut windows”, and the remainder of the complete elastic member that can impart elasticity is defined as “the effective elastic length of the elastic member”.

[0065] The tensile stress (N / m) of the entire front elastic band (84) and rear elastic band (86) can be distributed separately to provide the functional benefits of the invention, such as ease of stretching and wearing, while maintaining a specific force during wear to prevent the article from sagging after loading. When the elasticity of the front elastic band (84) and rear elastic band (86) is provided by a plurality of elastic members (96) extending laterally, the tensile stress can be adjusted by one or more of the following methods: 1) the elongation of the elastic members (96); 2) the density (dentex) of the elastic members (96); 3) the longitudinal spacing of the plurality of elastic members (96); and 4) the effective elastic length of the elastic members (96) in the lateral direction. The so-called elongation, "0% elongation", refers to the initial length of the elastic member.

[0066] The absorbent article of the present invention provides an appearance that visually suggests the function of the leg liner system (100). Various configurations between the elastic band (40) and the leg liner system (100) can enhance this appearance. Such configurations are provided below.

[0067] 1) The engagement between the garment-facing hoop area (72) of the adjustable leg liner system (100) and the straps. The front strap (84) and / or the back strap (86) and the absorbent body (38) can be engaged in such a way that at least a portion of the outer hoop elastic element (74) under active elasticity remains unengaged to the front strap (84) and / or the back strap (86). For example, see reference. Figure 2C It can engage the garment-facing hoop area (72) including the outer hoop elastic element (74) under active elasticity, so as to overlap only partially with or without overlapping the front band (84).

[0068] and / or on the back band (86). This can be achieved by constructing as follows: Figure 2C The adhesive area shown (CTBA)

[0069] To control the engagement area between the hoop area (72) facing the garment and the strap. When the outer hoop elastic element (74) is provided with multiple elastic strands, at least the innermost outer hoop elastic strand (74) can be stacked on the front strap (84) or the back strap (86). Reference Figure 2C The cuff area (72) facing the garment is joined such that only two inner outer cuff elastic strands (74) overlap the back band (86), while no outer cuff elastic strands (74) overlap the front band (84). The bonding area (CTBA) for joining the cuff area (72) facing the garment and the band can be provided in a certain size so as to at least cover the non-elastic area of ​​the elastic band (40). By providing the joining of the leg lining system (100) and the elastic band (40) in this manner, sufficient leg opening is ensured without compromising the fit of the crotch area (30), and the appearance of the leg lining system (100) is enhanced.

[0070] Still referencing Figure 2C The elastomer (96) of the back band (86) may be at least partially overlapped on the outer elastic band member (74) of the leg liner system (100) to transmit tension. The elastomer (86) of the back band overlapped on the outer elastic band member (74) may be in an active elastic state for at least about 10 mm inward from the outer elastic band member (74). By enabling the tension of the leg liner system (100) to be transmitted to the back band (86), a smooth leg opening circumference is formed, which further helps to shape the absorbent body (38) to conform to the wearer's hip.

[0071] 2) The size of the elastic cut windows of the front belt (84) and / or rear belt (86) can be adjusted to provide a non-elastic area that is at least partially superimposed on the absorbent core in the thickness direction. The non-elastic area may be provided with different lateral dimensions between the front and rear belts, such as Figure 2B As shown. The lateral dimension of the inelastic area (221) at its maximum size is referred to as the maximum lateral dimension. The rear strap may include an inelastic area (221) with a maximum lateral dimension, wherein the maximum lateral dimension of the inelastic area (221) of the rear strap may be about 50% to about 100% of the lateral dimension of the absorbent body. As a result, the inelastic area (221) of the rear strap (86) may be set to be larger than the inelastic area of ​​the front strap (84). By providing a relatively large inelastic area (221) for the rear strap, this provides improved hip coverage and enhances the appearance of the leg liner system (100).

[0072] 3) The longitudinal length (LF) of the front belt and the longitudinal length (LB) of the rear belt, as well as the spacing between the front belt (84) and the rear belt (86), can be adjusted. The longitudinal length (LB) of the rear belt can be approximately 110% to approximately 130% of the longitudinal length (LF) of the front belt.

[0073] refer to Figure 1 and Figure 4As a result of the aforementioned construction, the absorbent article of the present invention may have a leg opening (WLO) and a minimum leg opening (MLO) as measured by the leg opening measurement described below. The leg opening (WLO) is intended to measure the maximum circumferential size of the leg opening when worn by a wearer under reasonable tension. That is, the leg opening (WLO) represents the circumferential size of the leg opening when worn by a wearer of the expected maximum size. For baby diapers of sizes 3 (M) to 5 (XL) suitable for infants and toddlers weighing from about 6 kg to about 20 kg, the leg opening (WLO) may be from about 300 mm to about 450 mm. The minimum leg opening (MLO) is intended to measure the minimum circumferential size of the leg opening when worn by a wearer with almost no tension. That is, the minimum leg opening (MLO) represents the circumferential size of the leg opening when worn by a wearer of the expected minimum size. For baby diapers in sizes 3 (M) to 5 (XL) suitable for infants and toddlers weighing approximately 6 kg to approximately 20 kg, the minimum leg opening (MLO) can be approximately 225 mm to approximately 300 mm. The WLO / MLO ratio can be approximately 1.5 to approximately 1.7.

[0074] By providing the aforementioned leg opening (WLO), minimum leg opening (MLO), and their ratio, the leg liner system of the present invention provides a reliable leg liner feel and prevents leakage, while avoiding red marks and not feeling overly tight on wearers of a larger proportion of the intended size.

[0075] To provide an appearance that visually suggests the function of the leg lining system (100) of the present invention, colors can be provided for the various portions visible from the side facing the clothing. Such colors applied to different portions can be coordinated. Colors can be provided for one or more of the following portions:

[0076] a) External hoop elastic element (74)

[0077] b) Elastomer (96) of rear band (86) and / or front band (84)

[0078] c) Hoop area facing the clothing (72)

[0079] d) Liquid-impermeable film (60) overlapping the core side region (62).

[0080] e) Sheets (92, 94) used for manufacturing the front belt (84) and / or the rear belt (86).

[0081] The color provided on the garment-facing hoop area (72) of the hoop material can be provided in a plurality of stripes having a stripe lateral dimension and stripe spacing, wherein the stripes are spaced apart longitudinally. The stripe lateral dimension can be from about 15 mm to about 40 mm, and the stripes can be spaced apart at a interval of about 2 mm to about 10 mm. By providing colored stripes with such dimensions and spacing, the stripes can be well coordinated with the spacing of colored elastomers, such as elastic bands (40) and / or outer hoop elastic elements (74).

[0082] refer to Figures 5A to 5D The text describes non-limiting examples of absorbent articles with different parts exhibiting the aforementioned color coordination. Figures 5A to 5D In the text, the content depicted in shadow represents the color set on the base material, such as the material used to make the belt or hoop. Figure 5A It has areas adjacent to the waist opening and areas adjacent to the leg opening, which are provided with colored elastic parts of the same or similar color (as well as colored material and colored hoop for making the front belt). Figure 5B It has an area adjacent to the waist opening, an area adjacent to the proximal edge of the belt, and an area adjacent to the leg opening, the area being provided with colored elastic parts of the same or similar color. Figure 5A and Figure 5B Its appearance serves as a signal to prevent leakage from the waist and leg openings. Figure 5C It has a hoop with stripes whose lateral dimensions more or less match the lateral dimensions of the hoop area (72) facing the garment. Figure 5C The stripes can have a lateral dimension of about 15 mm to about 30 mm and be spaced apart at intervals of about 3 mm to about 15 mm. The stripes can be set with the same color in different grades (S1, S2) and arranged alternately. Figure 5C Its appearance can indicate its stretchability and softness. Figure 5D It has materials for making the belt and hoop materials with the same or similar colors. Figure 5D The appearance can be like underwear, and / or have additional elastic bands around the waist and / or legs.

[0083] The hoop (102) may be made of a material that is substantially impermeable to liquids. This material may be an SMS nonwoven material or an SMMS nonwoven material, or a nonwoven layer comprising fine denier fibers having an average diameter of less than 1 micrometer. A useful combination of nonwoven fiber webs may include spunbond, meltblown, spunbond (“SMS”) fiber webs comprising an outer layer of spunbond thermoplastic (e.g., polyolefin) and an inner layer of meltblown thermoplastic. The hoop (102) suitable for use herein includes those of the SMS type, available under the trade name LIVSEN SMS13 from Toray Polytech Nantong China, under the trade name SM15009270 from FQNHazlet NJ, and under the trade name B10160HS from Fibertex Aalborg Denmark.

[0084] Although made of the same hoop material (102), the hoop area (64) facing the wearer and the hoop area (72) facing the clothing may be treated with detergent or a hydrophobic surface coating through an area or a portion thereof to provide various physical properties. The hoop material (102) may have a hydrostatic head greater than about 2 mbar, or greater than about 3 mbar, or greater than about 4 mbar. The hoop material (102) may have a hydrostatic head less than about 200 mbar, or less than about 100 mbar, or less than about 75 mbar, or less than about 50 mbar, or less than about 25 mbar, or less than about 15 mbar. The hoop material (102) may have an opacity of about 15% to about 50% Hunter opacity, or about 20% to about 45% Hunter opacity. The hoop material (102) may have an opacity of about 45% to about 75% Hunter opacity; or about 50% to about 70% Hunter opacity. The hoop material (102) may have an air permeability of less than about 50 m³ / m² / min; or less than about 45 m³ / m² / min. The hoop material (102) may have an air permeability of greater than about 5 m³ / m² / min; or greater than about 10 m³ / m² / min; or greater than about 15 m³ / m² / min; or greater than about 20 m³ / m² / min.

[0085] Leg opening measurement

[0086] For trouser-type garments, where the elastic band (40) is an elastic band extending laterally from the front and rear areas of the absorbent body and sewn together at a pair of lateral edges, a leg opening (WLO) and a minimum leg opening (MLO) can be obtained when worn. When a certain force is applied to the leg opening, a leg opening (WLO) and a minimum leg opening (MLO) are obtained.

[0087] Use an electronic tension tester or equivalent instrument with a computer interface, such as the MTS Criterion C42, running TestWorks 4 software (purchased from MTS SYSTEMS (CHINA) CO., LTD), to measure force. Select a load cell such that the force result of the test sample will be between 10% and 90% of the capacity of the load cell used. Calibrate the instrument according to the manufacturer's instructions.

[0088] The tension tester is equipped with a hanging sample holder (300), such as Figure 4 As shown. Each fixture includes a rigid, linear, rubber-coated horizontal bar segment (302) to prevent the sample from slipping during testing. The outer diameter of the horizontal bar segment (302), 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.

[0089] The gauge length perimeter is determined by the following formula:

[0090] Gauge length perimeter = 2 × (H + D + πD / 2)

[0091] Where H is the vertical clearance between the horizontal bar segments (302), and D is the outer diameter of the bar. All tests were conducted indoors at 23℃±2℃ and 50%±5% relative humidity. The instrument was set up as follows:

[0092] Chuck speed: 254.0 mm / min Final load point: 12N Duration 0 Cycle number 1 Data acquisition rate 50Hz

[0093] Insert the sample into the upper horizontal bar segment (302) through one leg opening, positioning the sample crotch-side down so that the bar passes through one leg opening and the waist opening of the sample. Raise the chuck until the sample is suspended above the lower bar and does not contact the lower bar (302). Reset the load sensor to zero and lower the chuck so that the lower bar (302) is inserted through the leg opening but without stretching the sample. Adjust the sample so that the proximal edges of the side seam and the outer hoop elastic element are on the same vertical axis as the instrument load sensor. Slowly raise the chuck while holding the sample in place by hand as needed until the force is between 0.05N and 0.1N, being careful not to add any unnecessary force. The gauge length circumference at this point is the initial gauge length circumference. Begin the test and move the chuck upward at 254mm / min until...

[0094] A force of 12N is applied, and then the chuck immediately returns to its initial gauge length at the same speed. Record the circumference at 8N during the test loading (extension) phase and at 0.1N during the test unloading (contraction) phase.

[0095] The circumference at 8N is defined as the wearing leg opening (WLO). The circumference at 0.1N is defined as the minimum leg opening (MLO). Five samples are analyzed, and the average wearing leg opening (WLO) and average minimum leg opening (MLO) for both the left and right leg openings are calculated and reported, accurate to 1 mm.

[0096] Opacity method

[0097] Opacity was measured using an instrument or equivalent: a spectrophotometer with a circular optical geometry and a computer interface, featuring 0° illumination / 45° detection, such as the HunterLabLabScan XE running Universal Software (purchased from Hunter Associates Laboratory Inc., Reston, VA). Instrument calibration and measurements were performed using standard white and black calibration plates provided by the supplier. All tests were conducted indoors at 23°C ± 2°C and 50% ± 2% relative humidity.

[0098] The spectrophotometer was configured for use with the XYZ color scale, D65 illuminator, and a 10° standard observer, with the UV filter set to nominal. The instrument was normalized to a 0.7-inch aperture and a 0.5-inch field of view according to the manufacturer's specifications. After calibration, the software was set to the Y-opaqueness specification, which instructs the operator to cover the sample with a white or black calibration ceramic plate during measurements.

[0099] Before testing, the product was pre-conditioned for two hours at 23℃±2℃ and 50%±2% relative humidity. To obtain the hoop specimen, the product was stretched flat on a workbench with the body-facing surface facing upwards, and the total longitudinal length of the product was measured. The test point on the inner hoop (68) was selected at the longitudinal midpoint of the product. A 60mm long specimen was cut using scissors, with the center of the entire height of the inner hoop (68) located at the longitudinal midpoint of the inner hoop (68). In a similar manner, a specimen was prepared from the inner hoop (68) on the right side of the product. Any elastic members were removed.

[0100] Place the specimen over the measuring port. The specimen should completely cover the port with a surface that corresponds to the inward-facing surface of the inner clamp (68) pointing towards the port. Gently extend the specimen until it is taut in its longitudinal direction, so that the specimen lies flat against the port plate. Apply adhesive tape to secure the specimen to the port plate in its extended state for testing. The tape should not cover any part of the measuring port. Then cover the specimen with a white standard plate. Take a reading, then remove the white ceramic plate and replace it with a black standard ceramic plate without moving the specimen. Take a second reading and calculate the opacity as follows:

[0101] Opacity = (Y value) (黑色背衬) / Y value (白色背衬) )×100

[0102] Analyze samples from five identical products (10 inner hoops (68) (5 left hoops and 5 right hoops)) and record their opacity results. Calculate and report the average opacity, accurate to 0.01%.

[0103] air permeability test

[0104] Breathability was tested using a TexTest FX3300 breathability tester (purchased from Advanced Testing Instruments, Greer, SC) or an equivalent instrument, which has a custom 1cm gauge. 2 The instrument was fitted with a circular aperture (also purchased from Advanced Testing Instruments). It was calibrated according to the manufacturer's specifications. All tests were conducted in a chamber maintained at 23°C ± 2°C and 50% ± 2% relative humidity.

[0105] Before testing, the product was pre-conditioned for two hours at 23℃±2℃ and 50%±2% relative humidity. To obtain the specimen, the product was stretched flat on a workbench with the body-facing surface facing upwards, and the total longitudinal length of the product was measured. The test point on the inner hoop (68) was selected at the longitudinal midpoint of the product. A 30mm long specimen was cut using scissors, with the center of the entire height of the inner hoop (68) located at the longitudinal midpoint of the left hoop. In a similar manner, the specimen was prepared from the inner hoop (68) on the right side of the product. Any elastic members were removed.

[0106] Position the center of the specimen above the measuring port. The specimen should completely cover the port with a surface that corresponds to the inward-facing surface of the inner clamp (68) pointing towards the port. Gently extend the specimen longitudinally until taut, so that the specimen lies flat across the port. Apply adhesive tape to secure the specimen across the port in its extended state for testing. The tape should not cover any part of the measuring port. Set the test pressure to allow air to pass through the specimen. For nonwoven specimens, set the pressure to 125 Pa; and for specimens containing a membrane, use 2125 Pa. Close the sample loop and adjust the measuring range until the range indicator shows green to indicate that the measurement result is within the instrument's permissible limits. Record the air permeability to an accuracy of 0.1 m. 3 / m 2 / min.

[0107] Hydrostatic head test

[0108] The hydrostatic head was tested using a TexTest FX3000 hydrostatic head tester (purchased from Advanced Testing Instruments, Greer, SC), which features a custom 1.5cm... 2 A circular measuring port (also purchased from Advanced Testing Instruments) was used. Two annular sleeve rings (the same size as the gasket surrounding the measuring port) were cut from a standard protective sleeve for small nonwovens (part FX3000-NWH, purchased from Advanced Testing Instruments). The sleeve rings were then attached to the sample-facing surfaces of the upper and lower gaskets of the TexTest instrument using double-sided adhesive tape to protect the sample during clamping. The instrument was standardized according to the manufacturer's specifications. All tests were performed in a chamber maintained at approximately 23°C ± 2°C and approximately 50% ± 2% relative humidity.

[0109] Before testing, the article was preconditioned for two hours at approximately 23°C ± 2°C and approximately 50% ± 2% relative humidity. To obtain the specimen, the article was stretched flat on a workbench with the body-facing surface facing upwards, and the total longitudinal length of the article was measured. The test point on the inner hoop (68) was selected at the longitudinal midpoint of the article. A 70 mm long specimen was cut using scissors, with the center of the entire height of the inner hoop (68) located at the longitudinal midpoint on both the left and right sides. Any elastic members were removed.

[0110] Place the specimen centered above the orifice of the upper test indenter. The specimen should completely cover the orifice with a surface that corresponds to the outward-facing surface of the clamp pointing towards the orifice (the inward-facing surface then faces the water). Gently stretch the specimen longitudinally so that it lies flat against the upper test plate. Apply adhesive tape to secure the specimen to the test plate in its stretched state for testing. The tape should not cover any part of the measuring orifice.

[0111] Fill the TexTest syringe with distilled water and add water through the measuring port of the lower test plate. The water level should fill to the top of the lower liner. Attach the upper test head to the instrument and lower the test head to create a seal around the sample. For samples with a hydrostatic head of 50 mbar or less, set the test rate to 3 mbar / min, and for samples with a hydrostatic head greater than 50 mbar, set the rate to 60 mbar / min. Begin the test and observe the sample surface to detect water droplets penetrating the surface. Terminate the test when a water droplet is detected on the sample surface or the pressure exceeds 200 mbar. Record the pressure to the nearest 0.5 mbar; or if no penetration is detected, record >200 mbar.

[0112] Five identical products (10 inner hoop (68) specimens) were analyzed, and their hydrostatic head results were recorded. The average hydrostatic head was calculated and reported to an accuracy of 0.1 mbar.

[0113] Example

[0114] Examples 1 and 2 and Comparative Examples 1 and 2

[0115] Example 1 is an absorbent article of size 4 with internal original model number 2021040210922022N0-C. Example 1 has Figure 2A and Figure 2C Overall configuration, Figure 3A The configuration of the leg liner system, and the structural elements and dimensions shown in Table 1 below. Multiple elastic strands are used only on one side. The hoop material is an SMS-type nonwoven material, purchased from Toray Polytech Nantong China under the trade name LIVSEN SMS13.

[0116] Example 2 is an absorbent article of size 4 with internal original model number 2021040210922022N0-D. Example 2 has Figure 2B Overall configuration, Figure 3B The configuration of the leg liner system, such as Figure 2C The leg liner system and elastic band connection are shown, along with the structural elements and dimensions as shown in Table 1 below. Multiple elastic strands are used only on one side. The hoop material is an SMS-type nonwoven material, purchased from Toray Polytech Nantong China under the trade name LIVSEN SMS13.

[0117] Comparative Example 1 is a pair of P&G "Pampers Sarasara CarePants" in size 4 purchased from the Japanese market in 2020, with batch number 0151202271, and having the following characteristics: Figure 3C The leg bushing system configuration is shown, and it has the structural elements and dimensions shown in Table 1 below. Multiple elastic strands are used only on one side.

[0118] Table 1

[0119]

[0120] Compared to Comparative Example 1, Examples 1 and 2 provide leg liner systems with improved functional and intuitive appearance, improved softness, coverage, and leak protection.

[0121] 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 a range around which it is functionally equivalent. For example, a dimension disclosed as “40 mm” is intended to mean “about 40 mm”. Furthermore, every numerical range given throughout this specification includes every narrower numerical range falling within such a wider range.

[0122] Unless expressly excluded or otherwise limited, every reference cited herein, including any cross-references or related patents or applications, is incorporated herein by reference in its entirety. Reference to any reference is not an endorsement of its existence 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.

[0123] 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. An absorbent article having a skin-facing side, a clothing-facing side, a longitudinal axis, a transverse axis, a pair of longitudinally extending side edges, and a pair of transversely extending end edges, the absorbent article comprising an absorbent body, a front strap engaged to the front side of the absorbent body, and a back strap engaged to the rear side of the absorbent body, wherein the transverse edges of the front strap and the transverse edges of the back strap are joined by a seam to form a waist opening and two leg openings. Each front and rear band is formed by multiple elastomeric bodies that extend laterally and are sandwiched between the inner and outer sheets; The absorber includes: 1) Core foundation structure, the core foundation structure comprising: 1a) A liquid-permeable top sheet; 1b) Film that is impermeable to liquids; 1c) An absorbent core disposed between the top sheet and the bottom sheet, the absorbent core having a smaller size than the bottom sheet in both the longitudinal and transverse directions; 1d) An outer cover, disposed on the garment-facing side of the backing sheet, the outer cover having a larger dimension than the absorbent core in the transverse direction, and having the same or smaller dimension as the backing sheet in both the longitudinal and transverse directions; and 1e) A pair of core-side regions, defined as the area between the respective absorber core-side edge and the film-side edge; and 2) A leg bushing system, the leg bushing system being made of a pair of water-impermeable hoops, the pair of water-impermeable hoops being disposed laterally outside a pair of side edges of the core base structure and wrapping around the pair of side edges of the core base structure, the leg bushing system comprising: 2a) A pair of wearer-facing hoop areas, the pair of wearer-facing hoop areas being formed by extending the hoop material inward in the direction of the wearer-facing side of the core base structure; each of the pair of wearer-facing hoop areas includes a longitudinally extending inner hoop seal and a longitudinally extending inner hoop free edge positioned inside the inner hoop seal, wherein the inner hoop seal bonds the hoop material and the top piece, and an inner hoop resilient element is disposed adjacent to the inner hoop free edge; 2b) A pair of garment-facing hoop areas, said pair of garment-facing hoop areas being formed by extending the hoop material inward in the direction facing the garment side of the core base structure; and 2c) A pair of outer elastic band elements, said pair of outer elastic band elements being disposed on the hoop area facing the wearer or the hoop area facing the clothing, each outer elastic band element being configured to overlap the core side area and to overlap the inner hoop seal or its outer side; and The front band and the absorbent body are joined in such a way that the front longitudinal end of the outer hoop elastic element under active elasticity overlaps the front band and remains unjoined to the front band. The outer elastic element is disposed on the hoop area facing the clothing.

2. The absorbent article of claim 1, wherein the back band includes an inelastic region at least partially stacked on the absorbent core in the thickness direction, the inelastic region having a maximum lateral dimension, wherein the maximum lateral dimension of the inelastic region of the back band is 50% to 100% of the lateral dimension of the absorbent body.

3. The absorbent article according to claim 1 or 2, wherein the longitudinal length of the rear belt is 110% to 130% of the longitudinal length of the front belt.

4. The absorbent article of claim 1, wherein the hoop material for forming the clothing-facing surface of the hoop area is defined as a first clothing-facing fold, wherein the first clothing-facing fold is further folded and extended outward to form a second clothing-facing fold, wherein the outer hoop elastic element is sandwiched between the first clothing-facing fold and the second clothing-facing fold.

5. The absorbent article according to claim 1 or 2, wherein each side of the leg liner system further includes a side edge elastic strand, wherein the side edge elastic strand is disposed on the outer side of the substrate.

6. The absorbent article according to claim 1 or 2, wherein the outer elastic element is provided with a color visible from the side facing the clothing.

7. The absorbent article according to claim 1 or 2, wherein the elastomer of the back band is provided with a color visible from the side facing the clothing.

8. The absorbent article according to claim 1 or 2, wherein the elastomer of the front band is provided with a color visible from the side facing the clothing.

9. The absorbent article of claim 1, wherein the hoop material has a garment-facing hoop area with a color visible from the garment-facing side.

10. The absorbent article of claim 1, wherein the liquid-impermeable backing overlapping the core-side region is provided with a color visible from the clothing-facing side.

11. The absorbent article according to claim 9 or 10, wherein the color is disposed in a plurality of stripes having a stripe lateral dimension and stripe spacing, wherein the stripes are spaced apart in the longitudinal direction.

12. The absorbent article of claim 11, wherein the transverse dimension of the stripes is 15 mm to 40 mm, and the stripes are spaced apart at intervals of 2 mm to 15 mm.

13. The absorbent article according to claim 1 or 2, wherein the sheet used to manufacture the front or back band is provided with a color visible from the side facing the clothing.

14. The absorbent article according to claim 6, wherein the colors disposed on different portions are coordinated.

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