Reusable outer cover for absorbent articles - Patent Application 20070122997

Abstract

The present disclosure relates to a reusable outer cover (100) for forming an absorbent article (1), wherein an absorbent insert is adapted to be releasably attached to the outer cover. The outer cover includes first and second side portions (110, 111) extending laterally on opposite sides of a chassis portion (150). The first side portion (110) is permanently attached to the chassis portion (150) along a first side attachment segment (191), and the second side portion (111) is permanently attached to the chassis portion (150) along a second side attachment segment (192), defining a side length (SL). The chassis portion (150) includes a main member (150m) and a flap member (140). The flap member (140) is positioned such that the outboard side of the flap member (140) faces the inboard side of the main member (150m), thereby forming a pocket between the outboard side of the flap member (140) and the inboard side of the main member (150m). The flap member (140) is permanently attached to the main member (150m) along a first flap attachment segment (193) and a second flap attachment segment (194) at the second chassis side edge (104c), the first and second flap attachment segments (193, 194) defining a waist region length (WL). The side length (SL) extends a longitudinal distance (D) beyond the waist region length (WL) in a direction toward the lateral axis (X).

Description

[Technical Field]

[0001] The present invention relates to a reusable outer cover for an absorbent article in which an absorbent insert is releasably attached to the outer cover. The present invention also relates to an absorbent article comprising a reusable outer cover and an absorbent insert releasably attached to the outer cover. [Background technology]

[0002] Absorbent articles, in the form of diapers and incontinence pads, are commonly used for absorbing bodily exudates such as blood, urine, and feces for infants and incontinent adults. Focusing particularly on products classified as severe adult incontinence articles, these articles have a relatively high absorbent capacity and are therefore often used by individuals with physical or mental disabilities. These severe incontinence products are typically handled by caregivers to apply and remove from the wearer's body and are purchased by nursing homes, hospitals, and / or family members providing care.

[0003] Requirements for these products include: they must be leak-proof, easy to use and change, comfortable to wear, not adversely affect the wearer's skin health, and maintain the wearer's dignity when changing or putting them on.

[0004] To meet these requirements, currently used incontinence products are still mainly disposable, with single-use products being the standard for severe incontinence. Disposable products are easy to use as they require very limited handling after use. However, the manufacture and disposal of these products generates a large amount of material waste. After use, the products are either disposed of in landfills or, especially for adults taking one or more large doses of medication, the absorbent article may be incinerated. Currently, there is an increasing demand for more sustainable alternatives. To this end, products have been proposed that include an outer cover and an absorbent insert, where one or both of the outer cover and the absorbent insert are reusable.

[0005] For these types of products, it is important to ensure that the outer cover can properly position the absorbent insert against the wearer during use of the absorbent article, thereby maintaining leak resistance and the desired comfort. Furthermore, it is important to ensure that the absorbent article, including the outer cover and absorbent insert, meets the wearer's needs for comfort, fit, and dignity.

[0006] It is therefore an object to provide an outer cover for an absorbent article and / or an absorbent article that can be a sustainable alternative to current disposable products.

[0007] It is a further object to provide an outer cover for an absorbent article and / or an absorbent article that can adequately meet one or more of the above requirements and / or to provide an improvement or alternative to current products. Summary of the Invention [Means for solving the problem]

[0008] definition "Wearer" means a person who may be wearing an absorbent article as described herein.

[0009] "User" means a person who handles the absorbent article described herein, i.e., a person who prepares the absorbent article for use and / or applies the absorbent article to a wearer. The user may be the wearer or a caregiver of the wearer.

[0010] "Liquid-permeable" as used herein means a material that is liquid-permeable as understood in the field of absorbent articles. Thus, the material is not designed to significantly prevent fluids from leaking out of the material. Known liquid-permeable materials include, for example, those used as topsheet materials in conventional disposable absorbent products. In another example, conventional textile materials such as woven fabrics and knitted fabrics are generally liquid-permeable. A liquid-permeable material can be, for example, a textile material that is not coated or treated to be liquid-resistant. A liquid-permeable material can be, for example, a textile material that does not significantly absorb fluids.

[0011] "Breathable" as used herein means a material that allows water vapor to escape through the material.

[0012] For example, breathable but liquid-impermeable materials are commonly used as backsheet materials in absorbent articles. While breathable, such backsheet materials may prevent liquids from passing through the backsheet material. Such breathable but liquid-impermeable materials may be, for example, porous polymer films and laminates of porous polymer films and nonwoven fabrics.

[0013] The textile material forming the apertures, such as a knitted or woven textile material, is generally breathable.

[0014] The breathability of a material is usually measured by its water vapor transmission rate. For example, a breathable material suitable for absorbent articles should have a water vapor transmission rate of at least 1000 g / m² when measured at 37.7°C according to Inda and EDANA standard test method NWSP 070.5.R1(22). 2 It may have a water vapor transmission rate of 24 hours.

[0015] "Total Absorbent Capacity" means the total absorbent capacity measured according to the Rothwell method (ISO 11948).

[0016] As used herein, a "use cycle" of an absorbent article refers to the series of consecutive steps in which the absorbent article is applied to a wearer, the wearer wears the article for a limited period of time (e.g., until they urinate once or several times), and then the absorbent article is removed from the wearer.

[0017] "Reusable," as used herein, refers to an item that is intended to be used for more than one use cycle. Thus, a reusable item refers to an item that can be used through repeated use cycles. If desired, a reusable item can be cleaned, e.g., washed, or otherwise restored between use cycles.

[0018] For example, a reusable item may be designed to be used for at least 50 use cycles, such as at least 100 use cycles, or at least 500 use cycles.

[0019] "Single use," as used herein, refers to an item that is intended to be used for only one use cycle and then discarded. Thus, an item configured for single use is typically used by the user for a limited period of time (e.g., to urinate one or several times) and then discarded.

[0020] By "washable" it is meant that a washable item can be cleaned by washing. The item can be immersed in an aqueous solution containing detergent without losing its structural properties. The aqueous solution may be heated as part of the washing process, for example to 40°C or 60°C.

[0021] Washable items, such as outer covers, should be washable at least a predetermined number of times without significant degradation of their characteristics. In particular, washable outer covers should be washable a predetermined number of times without significantly impairing the functionality of fastening elements, such as insert fastening elements, or fastening elements for fastening the outer cover around the wearer's waist. Washable outer covers should also preferably be washable a predetermined number of times without significantly impairing the elasticity of other materials, such as leg elastics and / or the fabric of the outer cover. Finally, washable outer covers should preferably be washable a predetermined number of times without significantly impairing the color of the outer cover.

[0022] For example, it is preferred herein that a washable item, such as a washable outer cover, can withstand at least 20 washes at 60°C, and it is even more preferred that the washable outer cover can withstand at least 50 washes at 60°C.

[0023] Additionally, washable items, such as washable outer covers, are preferably "machine washable," i.e., the washing described above can be done in a washing machine.

[0024] After washing, the washable item, such as the washable outer cover, can be dried, for example, by line drying. Optionally, the washable item, such as the washable outer cover, can be adapted for tumble drying. In this case, the washable item must be adapted to withstand tumble drying without significant damage, similar to the above requirements for items that can withstand washing.

[0025] "Stretchable" as used herein means a material that can be stretched from its original dimensions and return to essentially the same dimensions when subjected to a force during normal use of the article.

[0026] By "surface fastening material" herein is meant a material that can be distributed substantially uniformly over the surface of an area, thereby providing substantially uniform fastening by the surface fastening material throughout the area, such that any portion of the area provided with the surface fastening material is easily attached via the surface fastening material.

[0027] In some examples, the fastening material may provide continuous fastening across the surface of the area that includes the fastening material. Such a fastening material may be, for example, an adhesive and may be applied across the area.

[0028] In some examples, the surface fastening material may provide fastening through a plurality of discrete fastening elements, the density of the fastening elements being set to provide substantially uniform fastening over an area including the surface fastening material. For example, the density of such discrete fastening elements may be set to provide substantially uniform fastening over an area including the surface fastening material. 2 At least 10 discrete fastening elements per square centimeter, or more preferably per square centimeter. 2 There may be at least 50 discrete fastening elements per

[0029] For example, the plurality of discrete fastening elements may provide mechanical and / or frictional fastening in an area that includes a surface fastening material. An example of a surface fastening material that includes discrete fastening elements may be a hook material and / or a loop material to form a hook / hook or hook / loop type connection.

[0030] By "fastening area comprising surface fastening material" is meant a surface area over which the surface fastening material is distributed, thereby allowing for substantially uniform fastening across the fastening area.

[0031] "Releasable" fastening, as used herein, means that a fastening area can be used to attach and detach multiple times to the surface of another area, e.g., a corresponding fastening area, without significantly impairing its functionality. For fastening areas on disposable products, it may be sufficient for the fastening area to provide for several attachment / detachment cycles, e.g., at least five cycles or at least two cycles. For fastening areas on reusable products, more attachment / detachment cycles may be required. For example, for reusable fastening areas, the fastening area may provide for at least 50 attachment / detachment cycles, e.g., at least 150 or at least 300 attachment / detachment cycles.

[0032] By "complementary" fastening materials herein is meant that two respective fastening materials are compatible with one another and can form a releasable fastening, i.e., releasable bond, therebetween. For example, a mechanical and / or frictional releasable attachment may be provided between complementary fastening materials. Examples of complementary fastening materials include a first fastening material that includes hooks (e.g., a hook material) and a second fastening material that includes loops (e.g., a loop material).

[0033] Knitting is the process of constructing fabric by intertwining a series of loops of one or more yarns. There are two main types of knitting: warp knitting and weft knitting.

[0034] "Weaving" is the technique or process of interlacing two yarns of similar material at right angles to each other to create a woven fabric. The warp threads run lengthwise through the fabric, and the weft or filling threads run from side to side.

[0035] Jacquard is a weaving or knitting system that utilizes a versatile patterning mechanism to create complex designs by using punch cards to control the pattern that is generated. Jacquard knitting can be effective for circular knitting, flat knitting, warp knitting, or weft knitting.

[0036] In the context of this disclosure, "nonwoven" refers to a manufactured sheet, web, or batt composed of directionally or randomly oriented fibers bonded by friction, and / or cohesion, and / or adhesion, excluding paper and woven, knitted, tufted, stitch-bonded products incorporating bonding yarns or filaments, or felted products by wet-milling with or without additional needling. The fibers may be of natural or synthetic origin, staple or continuous filament, or formed in situ. Commercially available fibers have diameters ranging from less than about 0.001 mm to more than about 0.2 mm and exist in several different forms: staple fiber, continuous single fiber, bundles of continuous filaments without twist, and bundles of continuous filaments with twist. Nonwoven fabrics can be formed by many processes, including meltblowing, spunbonding, solvent spinning, electrospinning, and carding.

[0037] The term "nonwoven" refers to different parts of the insert, which, in terms of their properties, lie between the group of paper and cardboard on the one hand and the group of textiles on the other. For nonwovens, a large number of very different manufacturing processes are used, such as airlaid, wetlaid, spunlace, spunbond, meltblown techniques, etc. The fibers can be in the form of infinite fibers or pre-manufactured fibers of infinite length, as synthetic fibers produced in situ, or in the form of staple fibers. Alternatively, they can be produced from natural fibers or a mixture of synthetic and natural fibers.

[0038] In the context of the present disclosure, longitudinal length is understood to be the longest length along the longitudinal axis of a given part or sub-part, unless otherwise defined, and similarly, lateral width is understood to be the widest width along the lateral axis of a given part or sub-part, unless otherwise defined.

[0039] When referring to the length of a set containing one or more items (i.e., the length spanned by a set containing one or more items), it refers to the maximum vertical length that includes all items in the set, i.e., whether or not the items are horizontally aligned.

[0040] Similarly, when referring to the width of a set of one or more items (i.e., the width spanned by a set of one or more items), it refers to the maximum horizontal width that includes all items in the set, i.e., whether or not the items are vertically aligned.

[0041] The term "completely contained within" means, for example, that an item "completely contained within" a part or portion does not protrude from that part or portion.

[0042] For purposes of this disclosure, unless expressly stated otherwise, the length, width, and other dimensions of an absorbent sanitary product, outer cover, or insert are measured when the item is laid flat on a flat surface and the contracting elastic is in an inactive state. By "inactive," we mean that the elastic is not acting to contract any part to which it is connected. To render the elastic in an inactive state, the elastic can be cut in one or more places, or the elastic can be removed.

[0043] When measuring the length of a functional portion of an elastic element along another portion, the start and end points of the functional portion of the elastic element can first be marked at the relevant portion, after which the elastic element can be placed in a non-functional state and the distance between the marked start and end points can be measured at the relevant portion when laid flat.

[0044] The functional part of an elastic element is the part that can function in use to contract the part to which it is connected. Thus, using the above procedure, parts of the elastic element that cannot function, such as glued end sections of elastic yarns, are ignored.

[0045] As used herein, the term "area" of a portion of a product corresponds to the surface area of ​​a flat surface that is covered by that portion when the product is laid flat on a flat surface with the elastic removed or in a non-functioning state.

[0046] To determine the flat area of ​​an item such as an outer cover, which may include multiple joined panels or sections, it may be necessary to cut the item into multiple flat pieces and determine the area of ​​each piece.

[0047] Outer cover In a first aspect, the present disclosure relates to an outer cover as set forth in claim 1 attached hereto.

[0048] Thus, a reusable outer cover for forming an absorbent article is provided, wherein an absorbent insert is adapted to be releasably attached to the outer cover. The outer cover has a front portion facing the front of a wearer, a rear portion facing the back of the wearer, and a crotch portion extending between the front and rear portions. The outer cover extends along a longitudinal central axis and also along a lateral central axis perpendicular to the longitudinal central axis, the lateral central axis dividing the outer cover into a front half and a rear half, a thickness axis defined perpendicular to both the longitudinal and lateral axes, an inward direction defined as the direction along the thickness axis that faces toward the wearer when the outer cover is worn, and an outward direction defined as the direction along the thickness axis that faces away from the wearer when the outer cover is worn.

[0049] The outer cover includes a chassis portion extending along a longitudinal axis from a front chassis edge that forms part of the front edge of the outer cover to a rear chassis edge that forms part of the rear edge of the outer cover. The chassis portion includes a first chassis side edge and a second chassis side edge that extend between the front and rear edges of the chassis portion on opposite sides of the longitudinal axis. In at least one of the rear and front halves of the outer cover, and preferably at least in the rear half of the outer cover, the outer cover includes a first side portion and a second side portion that extend laterally on opposite sides of the chassis portion with respect to the longitudinal axis. Each of the side portions of the outer cover includes one or more waist attachment elements for attaching the outer cover around the waist of a wearer in use. The first side portion is permanently attached to the chassis portion along a first side attachment segment of the first chassis side edge, and the second side portion is permanently attached to the chassis portion along a second side attachment segment of the second chassis side edge. The first and second side attachment segments define a side length from the longitudinal end of each segment closest to the central lateral axis to the adjacent trailing or leading edge of the outer cover.

[0050] The chassis portion includes a main member and a flap member. The main member forms a front or rear chassis edge, a first chassis side edge, and a second chassis side edge in the front or rear half. The flap member is positioned with its outboard side facing the inboard side of the main member, thereby forming a pocket between the outboard side of the flap member and the inboard side of the main member. The flap member is permanently attached to the main member along a first flap attachment segment at the first chassis side edge and a second flap attachment segment at the second chassis side edge. The first flap attachment segment and the second flap attachment segment define a waist region length from the longitudinal end of each segment closest to the central lateral axis to the adjacent rear or front edge of the outer cover.

[0051] Additionally, the side length extends a longitudinal distance in the direction of the lateral axis (X) beyond the waist region length.

[0052] Optionally, the first and second side attachment segments, and / or the first and second flap attachment segments extend essentially parallel to the longitudinal axis.

[0053] Optionally, the outer cover includes a first joint assembly including one or more joints connecting the first side portion and the chassis portion along a first side attachment segment and connecting the flap member to the main member along a first flap attachment segment; and and a second joint assembly including one or more joints connecting the second side portion and the chassis portion along a second side attachment segment and connecting the flap member to the main member along a second flap attachment segment.

[0054] Optionally, the outer cover includes a first joint connecting the first side portion and the chassis portion along a first side attachment segment and connecting the flap member and the main member along a first flap attachment segment; A second joint connects the second side portion and the chassis portion along a second side attachment segment and connects the flap member and the main member along a second flap attachment segment.

[0055] Optionally, each of the one or more joints, such as each of the first and second joints, is a sewn seam, a welded seam, a glued seam, an adhesive tape, or a combination thereof.

[0056] Optionally, one or more joints extend essentially parallel to the longitudinal axis.

[0057] Optionally, the longitudinal distance is greater than or equal to 0.50 times the waist region length, such as greater than or equal to 0.75 times the waist region length or greater than or equal to 0.90 times the waist region length.

[0058] Optionally, the longitudinal distance is at least 5 cm, such as at least 10 cm, or 5 cm to 20 cm, or 10 cm to 20 cm.

[0059] Optionally, the side length is 20% to 30% of the central outer cover length of the outer cover, preferably 22% to 27%, and most preferably about 25% of the central outer cover length of the outer cover.

[0060] Optionally, the waist region length is less than 15% of the central outer cover length of the outer cover, preferably less than 10% of the central outer cover length of the outer cover.

[0061] Optionally, a waist region of the chassis portion is defined laterally between the first and second flap attachment segments, the waist region having a waist region length, and the waist region of the chassis portion includes one or more insert fastening areas for releasably fastening an insert to the outer cover, preferably the insert fastening areas include at least two insert fastening areas laterally spaced apart and located on each lateral side of the central longitudinal axis (Y).

[0062] Optionally, at least one of the outward-facing side of the flap member forming the pocket and the inward-facing side of the main member includes one or more insert fastening areas for releasably fastening the insert to the outer cover. Advantageously, at least one of the outward-facing side of the flap member forming the pocket and the inward-facing side of the main member includes at least two insert fastening areas spaced laterally apart and located on each lateral side of the central longitudinal axis. For example, the outward-facing side of the flap member may include at least two insert fastening areas spaced laterally apart and located on each lateral side of the central longitudinal axis.

[0063] Optionally, the chassis portion of the outer cover further comprises a first elastic edge element and a second elastic edge element; A first resilient edge element is attached along at least a portion of the first chassis side edge, the first resilient edge element comprising: - the first elastic edge element is adapted to gather and gather a first gathered edge segment of the first chassis side edge when in a relaxed state, the first gathered edge segment being gathered and extending in a gathered state; - the first elastic edge element is adapted to stretch a first gathered edge segment of the first side edge when in a stretched state, the first gathered edge segment being flat and extending in an ungained state; A second resilient edge element is attached along at least a portion of the second chassis side edge, the second resilient edge element comprising: - the second elastic edge element is adapted to gather and gather the second gathered edge segment of the second chassis side edge when in a relaxed state, the second gathered edge segment being gathered and extending in a gathered state; and The second elastic element is adapted to stretch a second gathered edge segment of the second chassis side edge when in a stretched state, the second gathered edge segment being flat and extending in an ungained state.

[0064] Optionally, the ratio of the unpleated elongation of the first and second gathered edge segments to the gathered elongation of each of the first and second gathered edge segments is in the range of 2: 1 to 3.5: 1. For example, the ratio can be in the range of 2.5: 1 to 3: 1.

[0065] Optionally, the first gathered edge segment and the first side attachment segment are spaced apart by a second longitudinal distance, and the second gathered edge segment and the second side attachment segment are spaced apart by a second longitudinal distance, the second longitudinal distance being 3 cm or less, preferably 2 cm or less.

[0066] Optionally, the first gathered edge segment continues directly from the first side attachment segment, and the second gathered edge segment continues directly from the second side attachment segment.

[0067] Optionally, when the outer cover includes a first joint assembly or first joint portion and a second joint assembly or second joint portion, the first joint assembly or first joint portion overlaps the first elastic edge element when viewed in the thickness direction, and the second joint assembly or second joint portion overlaps the second elastic edge element when viewed in the thickness direction.

[0068] Optionally, the primary member has a first lateral fabric stretch rate in a region extending laterally between the first and second side attachment segments and longitudinally along the side length, and the flap member and primary member have a second lateral fabric stretch rate in a waist region extending laterally between the first and second flap attachment segments and longitudinally along the waist region length, the second lateral fabric stretch rate being less than the first lateral fabric stretch rate.

[0069] In a second variant of the first aspect, the present disclosure relates to an outer cover according to claim 18.

[0070] Thus, a reusable outer cover for forming an absorbent article is provided, wherein an absorbent insert is adapted to be releasably attached to the outer cover. The outer cover has a front portion facing the front of a wearer, a rear portion facing the back of the wearer, and a crotch portion extending between the front and rear portions. The outer cover extends along a longitudinal central axis and a transverse central axis perpendicular to the longitudinal axis, the transverse central axis dividing the outer cover into a front half and a rear half, and a thickness axis defined perpendicular to both the longitudinal and transverse axes. The outer cover includes a chassis portion extending along the longitudinal axis from a front chassis edge at the front edge of the outer cover to a rear chassis edge at the rear edge of the outer cover. The chassis portion includes first and second chassis side edges on opposite sides of the longitudinal axis extending between the front and rear edges of the chassis portion, respectively. In at least one of the rear and front halves of the outer cover, preferably at least the rear half of the outer cover, the outer cover: The outer cover includes first and second side portions extending laterally opposite the chassis portion relative to the longitudinal axis for fastening the outer cover about the waist of a wearer, and each of the outer cover side portions includes one or more waist attachment elements for attaching the outer cover about the waist of a wearer.

[0071] The first side portion is permanently attached to the chassis portion along a first side attachment segment at a first chassis side edge, and the second side portion is permanently attached to the chassis portion along a second side attachment segment at a second chassis side edge, the first and second side attachment segments defining a side length from the longitudinal end of each segment closest to the central lateral axis to the adjacent trailing edge or leading edge of the outer cover.

[0072] The chassis portion includes a waist region extending laterally between the first and second side attachment segments and longitudinally along a waist region length from either the front or rear edge of the outer cover toward the central longitudinal axis. The chassis portion further includes a middle region extending laterally between the first and second side attachment segments and longitudinally along a first distance from the waist region toward the central longitudinal axis. The middle region has a first crosswise fabric stretch rate, and the waist region has a second crosswise fabric stretch rate, the second crosswise fabric stretch rate being less than the first crosswise fabric stretch rate.

[0073] Optionally, in a second variation, the waist region of the chassis portion includes one or more insert fastening areas for releasably fastening the insert to the outer cover, and preferably the insert fastening areas include at least two insert fastening areas spaced apart laterally and located on each lateral side of the central longitudinal axis.

[0074] Optionally, in a second variation, the longitudinal distance is greater than or equal to 0.50 times the waist region length, such as greater than or equal to 0.75 times the waist region length or greater than or equal to 0.90 times the waist region length.

[0075] Optionally, in a second variation, the longitudinal distance is at least 5 cm, such as at least 10 cm, or 5 cm to 20 cm, or 10 cm to 20 cm.

[0076] Optionally, in a second variation, the side length is 20% to 30%, preferably 22% to 27%, and most preferably about 25% of the central outer cover length of the outer cover.

[0077] Optionally, in a second variation, the waist region length is less than 15% of the central outer cover length of the outer cover, preferably less than 10% of the central outer cover length of the outer cover.

[0078] Optionally, also in the second variation, the chassis portion of the outer cover further includes a first elastic edge element and a second elastic edge element; A first resilient edge element is attached along at least a portion of the first chassis side edge, the first resilient edge element comprising: - the first elastic edge element is adapted to gather and gather a first gathered edge segment of the first chassis side edge when in a relaxed state, the first gathered edge segment being gathered and extending in a gathered state; - the first elastic element is adapted to stretch a first gathered edge segment of the first chassis side edge when in a stretched state, the first gathered edge segment being flat and extending in an ungained state; and A second resilient edge element is attached along at least a portion of the second chassis side edge, the second resilient edge element comprising: - the second elastic edge element is adapted to gather and gather a second gathered edge segment of the second chassis side edge when in a relaxed state, the second gathered edge segment being gathered and extending in a gathered state; - The second elastic element is adapted to stretch a second gathered edge segment of the second chassis side edge when in a stretched state, the second gathered edge segment being flat and extending in an ungained state.

[0079] Optionally, in a second variation, the first gathered edge segment and the first side attachment segment, and the second gathered edge segment and the second side attachment segment, are each spaced apart by a second longitudinal distance, the second longitudinal distance being 3 cm or less, preferably 2 cm or less.

[0080] Optionally, in a second variation, the first gathered edge segment continues directly from the first side attachment segment, and the second gathered edge segment continues directly from the second side attachment segment.

[0081] Optionally, also in the second variation, similar to the first variation, the chassis portion includes a main member and a flap member; the primary member forms a front or rear chassis edge, a first chassis side edge, and a second chassis side edge in the front or rear half; the flap member is positioned with an outward facing side of the flap member facing the inward facing side of the main member, thereby forming a pocket between the outward facing side of the flap member and the inward facing side of the main member; the flap members are permanently attached to the main member along a first flap attachment segment at a first chassis side edge and along a second flap attachment segment at a second chassis side edge, the first and second flap attachment segments defining a waist region length from a longitudinal end of each segment closest to the central lateral axis to a rear edge of the rear half or a front edge of the front half of the outer cover; The side length extends a longitudinal distance in the direction of the lateral axis (X) beyond the waist region length.

[0082] Thus, according to the second variant described above, this second variant can be combined with any one of the features mentioned in relation to the first variant, with similar advantages.

[0083] As noted above, for the first variation, regions can be defined having a first lateral fabric stretch rate and regions can be defined having a second lateral fabric stretch rate.

[0084] Optionally, in the first or second variant, the second lateral fabric stretch rate is 30% to 70% of the first lateral fabric stretch rate, for example 40% to 60% of the first lateral fabric stretch rate, and thus 45% to 55% of the first lateral fabric stretch rate.

[0085] Optionally, in the first or second variant, each of the first and second side portions forms a side region, each side region having a side portion lateral fabric stretch rate, the side portion lateral fabric stretch rate being lower than the first lateral fabric stretch rate.

[0086] Optionally, in the first or second variant, the side lateral fabric stretch rate is 30% to 70% of the first lateral fabric stretch rate, for example 40% to 60% of the first lateral fabric stretch rate, and thus 45% to 55% of the first lateral fabric stretch rate.

[0087] absorbent articles In a second aspect, the present disclosure relates to an absorbent article according to claim 32. Thus, there is provided an absorbent article comprising an outer cover according to the first aspect (first or second variant) and an absorbent insert releasably attached to the outer cover.

[0088] The absorbent insert may be reusable or disposable.

[0089] The absorbent insert may be liquid impermeable, for example, the absorbent insert may include a liquid impermeable backsheet.

[0090] Variations of different aspects of the present disclosure (outer cover and absorbent article) are described below with reference to exemplary embodiments and drawings, in which it should be understood that the drawings are schematic and that the items shown are not necessarily drawn to scale.

[0091] Variations of the outer cover, insert and absorbent article will now be described by way of example with reference to the accompanying drawings. [Brief explanation of the drawings]

[0092] [Figure 1a] 1 shows an embodiment of an outer cover according to a first aspect of the present disclosure in a flat laid out state and viewed from the inside of the outer cover. [Figure 1b] The same view as FIG. 1a, but with some additional reference numerals. [Figure 2] 2 shows the outer cover of FIG. 1 in a flattened state, as viewed from the outside of the outer cover. [Figures 3a-3e] 2 illustrates an embodiment of the parts that together make up the outer cover of FIG. 1. [Figure 4] 2 illustrates an embodiment of an absorbent insert releasably attachable to the outer cover of FIG. 1, with the insert laid out flat and viewed from the inside of the insert. [Figure 5] 5 shows an absorbent article including the outer cover of FIG. 1 and the absorbent insert of FIG. 4 releasably attached to the outer cover. [Figures 6a-6d] 1 illustrates a usage cycle of an absorbent article including an outer cover and an absorbent insert. DETAILED DESCRIPTION OF THE INVENTION

[0093] In the drawings, like reference numbers generally refer to like features.

[0094] Description of variants FIG. 1a shows a variation of an outer cover 100 according to the present disclosure, with the outer cover laid out flat and viewed from the inside of the outer cover. FIG. 1b is the same view as FIG. 1a, but with some additional reference numerals. Thus, FIGS. 1a and 1b are intended to be read together and show the outer cover laid out flat and viewed from the inside of the outer cover. FIG. 2 shows the outer cover 100 of FIGS. 1a-1b in the same laid out flat state, but viewed from the outside of the outer cover.

[0095] The outer cover is adapted to releasably attach an absorbent insert 200 to the outer cover 100 to form an absorbent article 1 (see FIG. 5).

[0096] Outer cover characteristics The outer cover is reusable, i.e., intended to be used over multiple use cycles of the absorbent article. Thus, at the start of each use cycle, a new absorbent insert is attached to the outer cover to form the absorbent article, and after each use cycle, the absorbent insert can be removed from the outer cover and discarded or cleaned. The outer cover can also be configured to be cleanable between use cycles. Thus, the outer cover can be cleaned between use cycles as needed. However, it may be preferable to clean the outer cover only when deemed necessary, i.e., after one or more use cycles, when it is determined that the outer cover is sufficiently soiled to require cleaning.

[0097] To provide efficient cleaning, the outer cover may be configured to be washable.

[0098] For example, the outer cover may be configured to be machine washable.

[0099] For example, the outer cover can be configured to accommodate at least 20 washing cycles, such as at least 20 machine washing cycles as defined herein.

[0100] Optionally, the outer cover can be configured for at least 50 washing cycles, such as at least 50 machine washing cycles as defined herein.

[0101] Optionally, the outer cover can be configured for at least 20 machine wash cycles at 60°C, such as at least 50 machine wash cycles at 60°C.

[0102] Washing allows for hygienic cleaning of the outer cover, further enhancing the reusability of the cover. Machine washability is preferred as it makes it easier for caregivers to clean and reuse the product.

[0103] As noted above, the outer cover is not primarily intended to collect body exudates such as urine and feces from the wearer. Instead, the absorbent insert, which is attached to the outer cover during use of the absorbent article, performs the function of absorbing and collecting body exudates from the wearer.

[0104] Thus, the outer cover may be primarily liquid permeable.

[0105] By the outer cover being primarily liquid permeable, it is meant that the outer cover is substantially permeable to liquids such as urine.

[0106] Thus, at least 50% of the total area of ​​the outer cover may be liquid permeable, for example, at least 70% or at least 90% of the total area of ​​the outer cover may be liquid permeable.

[0107] The outer cover may be primarily liquid permeable, meaning that suitable materials for the outer cover may be selected from liquid permeable materials.

[0108] Thus, the outer cover can be made of a liquid-permeable material such as a textile fabric, thereby providing an absorbent article with a more underwear-like look and feel provided by the combination of the outer cover and absorbent insert.

[0109] The outer cover may be primarily breathable, which is beneficial to the skin health of the wearer.

[0110] Thus, at least 50% of the total area of ​​the outer cover can be breathable, for example, at least 70% or at least 90% of the total area of ​​the outer cover can be breathable.

[0111] Preferably, the outer cover is primarily liquid permeable and may be primarily breathable, and therefore may be made of a liquid permeable, breathable material, such as a textile material.

[0112] Preferably, the outer cover may be primarily liquid-permeable, primarily breathable, and washable as indicated above. To this end, suitable materials that are liquid-permeable, breathable, and washable may be selected for forming the outer cover. Again, suitable materials may be found among liquid-permeable, breathable, and washable textile materials.

[0113] For example, the outer cover garment portion may include one or more fabric panels that form the front, back, and crotch portions of the garment portion.

[0114] Thus, the one or more fabric panels can be selected from liquid permeable, breathable, and / or washable materials.

[0115] For example, one or more of the fabric panels may comprise a textile fabric. Suitable textile fabrics may be liquid permeable, breathable, and / or washable.

[0116] For example, one or more of the fabric panels may include a knitted textile fabric.

[0117] Knitted textile fabrics may be suitable for imparting elasticity to the outer cover, as discussed below.

[0118] For example, one or more of the fabric panels may comprise a weft knit textile fabric material, such as weft knit single jersey.

[0119] For example, the outer cover may include a textile fabric having a basis weight in the range of 150-300 gsm, such as in the range of 200-250 gsm. For example, one or more fabric panels may include a textile fabric having a basis weight in the range of 150-300 gsm, such as in the range of 200-250 gsm. Such a fabric may be, for example, a knitted textile fabric, such as a weft knit textile fabric, as described above, e.g., a weft knit single jersey.

[0120] The outer cover may include a material that is elastic in at least one way, and preferably in two ways. For example, one or more fabric panels may include a material that is elastic in at least one way, and preferably in two ways. Such a material may be, for example, a knitted fabric, as described above.

[0121] For example, the outer cover may include a textile fabric that includes polyester.

[0122] Thus, one or more of the fabric panels of the garment portion may comprise a textile fabric comprising polyester, for example, a majority of the area of ​​the garment portion, for example at least 60%, or at least 80%, or at least 90% of the area, may comprise a textile fabric comprising polyester.

[0123] For example, one or more fabric panels may include a textile fabric comprising a blend of polyester and elastane. For example, one or more fabric panels may include a textile fabric comprising 70% or more polyester, such as 80% or more polyester. For example, one or more fabric panels may include a textile fabric comprising 70% to 90% polyester and 30% to 10% elastane. For example, one or more fabric panels may include a fabric comprising 80% polyester and 20% elastane.

[0124] Polyester materials have been found to have advantageous properties, for example, with respect to shrinkage, shape retention, and stretchability through use and washing cycles.

[0125] For example, the outer cover may include a textile fabric that includes recycled materials. Thus, one or more of the fabric panels of the garment portion may include a textile fabric that includes recycled materials. For example, a majority of the area of ​​the garment portion, such as at least 60%, or at least 80%, or at least 90% of the area, may include a textile fabric that includes recycled materials.

[0126] For example, the amount of recycled material in the textile fabric may be at least 20%, such as at least 50%, or at least 70%.

[0127] As described below, the outer covers disclosed herein may include multiple components joined to form the front, back, and crotch portions of the garment portion. The use of multiple components may provide multiple options for controlling the shape of the outer cover and / or other properties of the outer cover, such as its elasticity, as described below.

[0128] The different parts may be joined by any suitable joining member, which may, for example, be selected taking into account the requirements of the outer cover, such as washability and / or breathability.

[0129] For example, the different parts can be joined by an adhesive bonding member, such as adhesive tape.

[0130] For example, different parts may be joined by mechanical joining members such as stitches or seams.

[0131] The different parts may be permanently joined, i.e., intended to be joined throughout the life of the outer cover.

[0132] Optionally, different parts of the outer cover can be made from different fabrics, thereby taking advantage of the different properties of the different fabrics to impart different functions and / or aesthetics to the garment portions and the outer cover.

[0133] In another option, different components of the outer cover can be manufactured from the same fabric, so that the different components have similar properties, i.e., liquid permeability and / or breathability, and behave similarly during use, such as washing and wear. This can be advantageous for the durability of the reusable outer cover. Furthermore, using the same fabric material for the different components allows for efficient use of fabric material during manufacturing and reduces fabric waste.

[0134] As noted above, when an absorbent insert is attached to the outer cover, the absorbency of the absorbent article formed by the outer cover is provided primarily by the absorbent insert alone.

[0135] For example, the crotch region of the outer cover may be essentially non-absorbent, meaning that the crotch region is not designed to absorb body exudates to any significant extent.

[0136] For example, the entire outer cover may be essentially non-absorbent.

[0137] By essentially non-absorbent, it is meant herein that the outer cover is not designed to absorb and retain fluids to any significant extent.

[0138] To this end, one or more different components of the outer cover may be made of one or more materials that are each essentially non-absorbent.

[0139] General Description of Outer Cover Variations Disclosed Herein The outer cover 100, as in the illustrated variation, has a front portion Sf that faces the front of the wearer when the outer cover is in use, a rear portion Sb that faces the back of the wearer when the outer cover is in use, and a crotch portion Sc that extends between the front portion Sf and the rear portion Sb. The outer cover 100 includes a front edge 101 at the front portion Sf of the outer cover and a rear edge 102 at the rear portion Sb of the outer cover.

[0140] The outer cover 100 further includes a first side edge 103 and a second side edge 104 that extend between the leading edge 101 and the trailing edge 102 of the outer cover 100, respectively.

[0141] The outer cover 100 extends along a central longitudinal axis Y from a leading edge 101 at the front Sf of the outer cover to a trailing edge 102 at the rear Sb of the outer cover; The outer cover 100 extends between a first side edge 103 and a second side edge 104 along a central lateral axis X that is perpendicular to the longitudinal axis Y. Additionally, a thickness axis Z is defined that is perpendicular to both the longitudinal and lateral axes X, Y.

[0142] As seen in Figures 1a-1b, the inward direction Zi is defined as the direction along the thickness axis Z that points toward the wearer when the outer cover 100 is worn, and the outward direction Zo is defined as the direction along the thickness axis Z that points away from the wearer when the outer cover is worn.

[0143] The crotch region Sc of the outer cover defines a minimum crotch width Wmin of the outer cover, and a central longitudinal axis Y extends through the center of the minimum crotch width Wmin. The central outer cover length L is measured between the leading edge 101 and the trailing edge 102 at the central longitudinal axis Y, and thus the central outer cover length L is the length along the central longitudinal axis Y and between the leading edge 101 and the trailing edge 102 at the central longitudinal axis Y, i.e., at the center of the minimum crotch width Wmin.

[0144] At least one of the rear portion Sb or the front portion Sf of the outer cover includes a pair of side portions 110, 111 extending laterally on either side of the central longitudinal axis Y. Each of the side portions 110, 111 of the outer cover includes one or more waist attachment elements 115, 116 for attaching the outer cover around the waist of a wearer.

[0145] According to the example, and as in the outer cover shown, at least the rear portion Sb includes a pair of side portions 110,111.

[0146] In some examples, such as the illustrated outer cover, the side portions 110, 111 are attachable to the front portion Sf of the outer cover to fasten the outer cover around the waist of a wearer. For example, and as in the illustrated outer cover, the outward-facing side of the front portion may be provided with one or more complementary attachment elements 117, 118 (see FIG. 2) to which one or more waist attachment elements 115, 116 of the side portions 110, 111 can be releasably attached to close the outer cover around the waist of a wearer.

[0147] In another example not shown, the outer cover may include a pair of front side portions extending laterally on either side of the longitudinal axis Y at the front Sf of the outer cover, and the rear side portions may be attachable to the front side portions to fasten the outer cover around the waist of the wearer.

[0148] In yet another example not shown, the rear side sections can be attached to each other in a closed position around the waist of the wearer, i.e., to form a closed belt, and the front section can be attached to the side sections in the closed position.

[0149] In accordance with this disclosure, and as shown in the example outer cover in the figures, outer cover 100 is further defined as follows:

[0150] The outer cover 100 includes a chassis portion 150 extending along a longitudinal axis y from a front chassis edge 101c forming part of the outer cover's leading edge 101 to a rear chassis edge 102c forming part of the outer cover's trailing edge 102. The chassis portion 150 includes a first chassis side edge 103c and a second chassis side edge 104c on opposite sides of the longitudinal axis Y and extending between the chassis leading edge 101c and trailing edge 102c of the chassis portion 150, respectively.

[0151] As described above, at least one of the rear half Sb and the front half Sf of the outer cover includes a first side portion 110 and a second side portion 111. The first side portion 110 and the second side portion 111 extend laterally on opposite sides of the longitudinal axis Y of the chassis portion 150, and each of the side portions 110, 111 of the outer cover includes one or more waist attachment elements 115, 116 for attaching the outer cover around the waist of a wearer during use.

[0152] The first side portion 110 is permanently attached to the chassis portion 150 along a first side mounting segment 191 at the first chassis side edge 103c, and the second side portion 111 is permanently attached to the chassis portion 150 along a second side mounting segment 192 at the second chassis side edge 104c. The first and second side mounting segments 191, 192 define a side length SL from the longitudinal end of each segment closest to the central lateral axis X at the respective first and second chassis side edges 103c, 104c to the adjacent trailing edge 102 or leading edge 101 of the outer cover (see FIGS. 1a-1b and 3a).

[0153] The chassis portion 150 includes a main member 150m and a flap member 140. The main member 150m forms the front or rear chassis edges 101c, 102c, the first chassis side edge 103c, and the second chassis side edge 104c in the front or rear half. For example, the main member 150m may extend across the entire chassis portion 150 of the outer cover 200, i.e., across both the front and rear halves, and form the front and rear chassis edges 101c, 102c and the first and second chassis side edges 103c, 104c. (See Figure 3a—main member; Figure 3b—flap member.)

[0154] The flap members 140 are arranged such that the outward facing sides of the flap members 140 face the inward facing sides of the main members 150m, thereby forming a pocket between the outward facing sides of the flap members 140 and the inward facing sides of the main members 150m. This pocket is intended to receive the rear or front end, respectively, of an absorbent insert that is releasably attached to the outer cover to form the absorbent article.

[0155] The flap member 140 is permanently attached to the main member 150m along a first flap attachment segment 193 at the first chassis side edge 103c and a second flap attachment segment 194 at the second chassis side edge 104c (see FIG. 3a). The first flap attachment segment 193 and the second flap attachment segment 194 define a waist region length WL from the longitudinal end of each segment closest to the central lateral axis X to the rear edge 102 of the rear half of the outer cover or the front edge 101 of the front half.

[0156] It will be understood that the side length SL, waist region length WL, and longitudinal distance D are all measured parallel to the longitudinal axis Y.

[0157] The side length SL extends a longitudinal distance D in the direction of the lateral axis X beyond the waist region length WL.

[0158] During use of the outer cover, the first and second side portions 110, 111 are stretched laterally to fasten the outer cover around the waist of the wearer. Opposing lateral forces applied to the first and second side portions 110, 111 are transmitted to the chassis portion 150 because the first and second side portions 110, 111 are permanently attached to the chassis portion 150 along the first and second side attachment segments 191, 192 of the first and second chassis side edges 103c, 104c.

[0159] The extension of the side portion length SL beyond the waist region length WL in the direction of the lateral axis X by a distance D ensures that, during use of the outer cover, lateral forces applied to the first and second side portions 110, 111 are transmitted not only to the portion of the chassis portion 150 including the waist region portion of the chassis portion 150 to which the flap member 140 is attached, but also to the region of the chassis portion 150 extending from the waist region in the direction of the lateral axis X, i.e., the region of the chassis portion 150 not including the flap member 140. This ensures that, during use of the outer cover, the first and second side portions 110, 111 laterally stretch the portion of the main member 150 extending longitudinally along the distance D. This may ensure that the main member 150 covers the wearer and does not unintentionally fold or wrinkle in the direction of the longitudinal axis Y. This may be particularly important in the rear half of the outer cover. This is because the rear of the chassis 150 is shaped to cover the buttocks and lower back region of the wearer and may, for example, have a relatively wide width. In absorbent articles that include a reusable outer cover and a detachable insert, it is advantageous if the insert can be reduced in size, particularly if the insert is disposable. Thus, the insert can be optimized to perform the necessary absorbent function. The outer cover can be optimized to hold the insert in the correct position relative to the wearer during use, but can also be optimized to ensure that the absorbent article adequately covers the wearer, which is important for the wearer's comfort, fit, and dignity. Thus, by ensuring that the side portions 110, 111 cooperate with the chassis portion, as described above, the outer cover can provide better coverage and fit while still performing the function of releasably holding the insert in the correct position relative to the wearer.

[0160] When an item is "permanently attached along an edge segment," it is understood that the attachment is made at or along the edge. For example, the attachment can be made at a distance from the edge, as may be required by the type of joint used to make the attachment. For example, the attachment can be made by creating a seam along the edge segment with a seam allowance between the edge and the seam.

[0161] 1a-1b, the first and second side mounting segments 191, 192 extend essentially parallel to the longitudinal axis Y (see FIG. 3a). When the first and second side mounting segments 191, 192 extend essentially parallel to the longitudinal axis Y, it can be ensured that opposing lateral forces applied to the first and second side portions 110, 111 during use of the outer cover are evenly transmitted to the chassis portion 150.

[0162] 1a-1b, the first and second flap attachment segments 193, 194 extend essentially parallel to the longitudinal axis Y (see FIG. 3a). When the first and second flap attachment segments 193, 194 extend essentially parallel to the longitudinal axis Y, it can be ensured that opposing lateral forces applied to the first and second side portions 110, 111 during use of the outer cover are evenly transmitted to the flap member 140, thereby laterally stretching the flap member 140.

[0163] 1a-1b, the first and second side attachment segments 191, 192 and the first and second flap attachment segments 193, 194 extend essentially parallel to the longitudinal axis Y. This ensures the above-mentioned advantages in terms of force distribution and also offers efficient possibilities for the production of the outer cover.

[0164] According to the example of the outer cover such as that of FIGS. 1a-1b, the outer cover may be a first joint assembly 181 including one or more joints connecting the first side portion 110 to the chassis portion 150 along a first side attachment segment 191 and connecting the flap portion 140 to the primary member 150m along a first flap attachment segment 193; and a second joint assembly 182 including one or more joints connecting the second side portion 111 to the chassis portion 150 along a second side attachment segment 192 and connecting the flap portion 140 to the main member 150m along a second flap attachment segment 194;

[0165] A joint assembly can include multiple joints, for example, a joint assembly can include two joints. For example, a first joint assembly can include one joint connecting the first side portion 110 to the chassis portion 150 along the first side attachment segment 191 and another joint connecting the flap member 140 to the main member 150m along the first flap attachment segment 193. Similarly, a second joint assembly can include one joint connecting the second side portion 111 to the chassis portion 150 along the second side attachment segment 192 and another joint connecting the flap portion 140 to the main member 150m along the second flap attachment segment 194.

[0166] To ensure that lateral forces are adequately transmitted to the chassis portion 150 when the outer cover includes the first and second joint assemblies 181, 182 as described above, the lateral spacing between any joints within each joint assembly 181, 182 can be kept relatively narrow. For example, the maximum lateral spacing between any joints within each joint assembly 181, 182 can be less than 2 cm, and preferably less than 1 cm. Additionally, the joints may be positioned to completely or partially overlap one another when viewed along the thickness axis X, i.e., there may be no lateral spacing between the joints within each joint assembly 181, 182.

[0167] 1a-1b, the outer cover includes a first joint 181 connecting the first side portion 110 to the chassis portion 150 along a first side attachment segment 191 and connecting the flap member 140 to the main member 150m along a first flap attachment segment 193. Additionally, the outer cover includes a second joint 182 connecting the second side portion 111 to the chassis portion 150 along a second side attachment segment 192 and connecting the flap member 140 to the main member 150m along a second flap attachment segment 194.

[0168] In other words, the first side portion 110 and flap member 140 are permanently attached to the chassis portion 150 by the first joint 181, and the second side portion 111 and flap member 140 are permanently attached to the chassis portion 150 by the second joint 182.

[0169] This improves the efficiency of force distribution from the first side portion 110 and the second side portion 111 to the chassis portion 150, thereby allowing the waist region having the flap member 140 and the main member region extending along the first distance D to extend laterally. This also allows for efficient manufacturing of the outer cover.

[0170] By way of example, each of the one or more joints, eg, first and second joints 181, 182, may be a sewn seam, a welded seam, a glued seam, an adhesive tape, or a combination thereof.

[0171] For example, in the outer cover of Figures 1a-1b, each of the one or more joints 181, 182 is in the form of a sewn seam.

[0172] Preferably, the one or more bonded joints have a relatively low extensibility in a direction perpendicular to the longitudinal extension of the bonded joint. This allows the one or more bonded joints to be stable in transmitting forces perpendicular to the bonded joints, and therefore, when the one or more bonded joints are arranged to extend primarily along the longitudinal direction of the outer cover, the one or more bonded joints are stable in transmitting forces along the lateral direction of the outer cover. The bonded joint types described above typically have a relatively low extensibility in a direction transverse to the longitudinal extension of the bonded joints. Optionally, the one or more bonded joints may have a relatively high extensibility in a direction along the longitudinal extension of the bonded joints.

[0173] The joint(s) may be intermittent, i.e., formed by separate stitches or adhesive connections.

[0174] However, it is preferred that the joint or joints are continuous, and in this sense the stitched seam is considered "continuous."

[0175] According to an example such as the outer cover of FIGS. 1a-1b, one or more joints 181, 182 extend essentially parallel to the longitudinal axis Y.

[0176] 1a-1b, the longitudinal distance D is greater than or equal to 0.50 times the waist region length WL. For example, the longitudinal distance D may be greater than or equal to 0.75 times the waist region length WL or greater than or equal to 0.90 times the waist region length WL. The longitudinal distance D may be less than or equal to 2.00 times the waist region length WL, for example, less than or equal to 1.50 times the waist region length WL. For example, the longitudinal distance D may be in the range of 0.50 times the waist region length WL to 2.00 times the waist region length WL, for example, in the range of 0.75 times the waist region length WL to 2.00 times the waist region length WL. For example, such as the illustrated outer cover, the longitudinal distance D is in the range of 0.90 times the waist region length to 1.50 times the waist region length. In the illustrated outer cover, the longitudinal distance D is approximately 1.0 times the waist region length WL.

[0177] According to an example, and as in the outer cover of Figures 1a-1b, the longitudinal distance D is at least 5 cm, for example at least 10 cm. According to an example, and as in the outer cover of Figures 1a-1b, the longitudinal distance D is not more than 20 cm. For example, and as in the outer cover of Figures 1a-1b, the longitudinal distance D may be from 5 cm to 20 cm, for example from 10 cm to 20 cm.

[0178] By way of example, and as in the outer cover of Figures 1a-1b, the side portion length SL is 20% to 30% of the central outer cover length L of the outer cover, preferably 22% to 27%, and most preferably about 25% of the central outer cover length L of the outer cover.

[0179] By way of example, and as in the outer cover of Figures 1a-1b, the waist region length WL is less than 15% of the central outer cover length L of the outer cover, and preferably less than 10% of the central outer cover length L of the outer cover.

[0180] Cloth Percentual Stretch in different areas By way of example, a reusable outer cover 100 according to the first variant of the present disclosure may be defined in terms of fabric stretch in different regions of the outer cover 100, where the fabric stretch is measured according to the test methods described herein.

[0181] The stretch of the fabric in a region of the outer cover is a property of the fabric material that makes up that region of the outer cover, and is therefore measured in an area of ​​the fabric that is free of any joins or additional components (e.g., insert fastening components attached to the fabric, etc.).

[0182] An "area" of the outer cover means an area when viewed in a plane subtended by the lateral axis X and the longitudinal axis Y. Thus, an area may include one or more layers stacked in the thickness direction X. For example, one layer of the main member 150m of the chassis portion and one layer of the flap member 140.

[0183] For example, primary member 150m has a first lateral fabric stretch rate in a region extending between first side attachment segment 191 and second side attachment segment 192 and extending along side length SL. Flap member 140 and primary member 150m have a second lateral fabric stretch rate in the waist region extending between first flap attachment segment 193 and second flap attachment segment 194 and extending along waist region length WL. The second lateral fabric stretch rate is less than the first lateral fabric stretch rate.

[0184] Further, in a second alternative variation of the present disclosure, a reusable outer cover 100 for forming an absorbent article 1 is provided, wherein an absorbent insert is adapted to be releasably attached to the outer cover. The outer cover 100 has a front portion Sf facing the front of a wearer, a rear portion Sb facing the back of the wearer, and a crotch portion Sc extending between the front portion Sf and the rear portion Sb; the outer cover 100 extends along a central longitudinal axis Y and a central lateral axis X perpendicular to the longitudinal axis Y, the central lateral axis X dividing the outer cover 100 into a front half and a rear half, and a thickness axis Z defined perpendicular to both the longitudinal and lateral axes X and Y; The outer cover 100 includes a chassis portion 150 extending along a longitudinal axis y from a front chassis edge 101c at a front edge 101 of the outer cover to a rear chassis edge 102c at a rear edge 102 of the outer cover; the chassis portion 150 includes a first chassis side edge 103c and a second chassis side edge 104c extending between leading and trailing chassis edges 101c, 102c, respectively, of the chassis portion 150 on either side of the longitudinal axis Y; In at least one of the rear half Sb or the front half Sf of the outer cover, The outer cover is first and second side portions 110, 111 extending laterally on opposite sides of the chassis portion 150 relative to the longitudinal axis Y for fastening the outer cover about the waist of a wearer, each of the side portions 110, 111 of the outer cover including one or more waist attachment elements 115, 116 for attaching the outer cover about the waist of a wearer; the first side portion 110 is permanently attached to the chassis portion 150 along a first side attachment segment 191 at the first chassis side edge 103 c, and the second side portion 111 is permanently attached to the chassis portion 150 along a second side attachment segment 192 at the second chassis side edge 104 c, the first and second side attachment segments 191, 192 defining a side length SL from the longitudinal end of each segment closest to the central lateral axis X to the adjacent trailing edge 102 or leading edge 101 of the outer cover; and, The chassis portion 150 extends laterally between the first and second side mounting segments 191, 192, and a waist region WR extending longitudinally from a leading or trailing edge 101, 192 of the outer cover toward a central longitudinal axis X along a waist region length WL; Further, the chassis portion 150 includes an intermediate region IR extending laterally between the first and second side attachment segments 191, 192 and extending longitudinally along a first distance D from the waist region toward the central longitudinal axis X; Here, the intermediate region IR has a first lateral fabric stretch rate, and the waist region WR has a second lateral fabric stretch rate, the second lateral fabric stretch rate being lower than the first lateral fabric stretch rate (see FIG. 1b).

[0185] This second variant of the present disclosure can be combined with various features and advantages of the first variant of the present disclosure described above.

[0186] Further advantageous features regarding fabric stretch for both variations of the present disclosure are exemplified below.

[0187] In some examples, such as the illustrated outer cover, the second lateral fabric stretch rate is 30% to 70% of the first lateral fabric stretch rate, e.g., 40% to 60% of the first lateral fabric stretch rate, resulting in a lateral fabric stretch rate of 45% to 55% of the first lateral fabric stretch rate.

[0188] For example, the second lateral fabric stretch rate can be about 50% of the first lateral fabric stretch rate.

[0189] According to an example of the illustrated outer cover, the first side portion 110 and the second side portion 111 each form a side region SR1, SR2, and each side region SR1, SR2 has a side region lateral fabric stretch rate, which is lower than the first side region lateral fabric stretch rate.

[0190] In the illustrated outer cover and other examples, the lateral fabric stretch rate of the side portions is 30% to 70% of the first lateral fabric stretch rate, for example 40% to 60% of the first lateral fabric stretch rate, resulting in 45% to 55% of the first lateral fabric stretch rate.

[0191] For example, the lateral fabric stretch of the side portion may be about 50% of the first lateral fabric stretch.

[0192] pleated edge segment 1a-1b, the outer cover of the first or second variant of the present disclosure further includes a first elastic edge element 161 and a second elastic edge element 162. The first elastic edge element 161 is attached along at least a portion of the first chassis side edge 103c, and the first elastic edge element 161 is - the first elastic edge element 161 is adapted to gather and gather the first gathered edge segment 151 of the first chassis side edge 103c when in a relaxed state, so that the first gathered edge segment 151 is gathered and extends in a gathered state; and - the first elastic edge element 161 is adapted to stretch the first gathered edge segment 151 of the first chassis side edge 103c when in a stretched state, the first gathered edge segment 151 being flat and extending in an ungained state.

[0193] A second elastic edge element 162 is attached along at least a portion of the second side edge 104, the second elastic edge element 162 comprising: - the second elastic edge element 162 is adapted to gather and gather the second gathered edge segment 152 of the second chassis side edge 104c when in a relaxed state, so that the second gathered edge segment 152 is gathered and extends in a gathered state; and The second elastic element 162 is adapted to stretch the second gathered edge segment 152 of the second chassis side edge 104c when in a stretched state, and the second gathered edge segment 152 is flat and extends without gathered edges.

[0194] Accordingly, first and second gathered edge segments 151, 152 are formed along the first side edge 103 and the second side edge 104 of the outer cover 100, respectively. The gathered edge segments 151, 152 may therefore facilitate the leg openings formed by the outer cover 100 to conform to and fit toward the wearer's legs during use. The first and second gathered edge segments 151, 152 thereby improve the fit of the outer cover in the areas surrounding the wearer's legs. Furthermore, the first and second gathered edge segments 151, 152 may help to hold the detachable absorbent insert 200 in the correct position relative to the wearer during use when attached to the outer cover 200.

[0195] The first and second elastic edge elements 161, 162 may be any type of elastic element, such as an elastic thread, ribbon, or band, and are applied to or adjacent the first or second chassis side edge 103c, 104c. For example, and as in the outer cover shown, each of the first and second elastic edge elements 161, 162 may be an elastic edging. Such an elastic edging may be folded around the first or second edge of one or more panels of material forming the outer cover, such that the elastic edging forms at least a portion of the first side edge 103 or second side edge 104 of the outer cover.

[0196] The first and second elastic edge elements 161, 162 are applied along at least the first and second gathered edge segments 151, 152, respectively. However, the first and second elastic edge elements 161, 162 may also extend beyond the first and second gathered edge segments 151, 152, respectively, along the first or second side edges 103, 104, towards the trailing edge 102 and / or leading edge 101.

[0197] For example, and as in the outer cover of Figures 1a-1b, elastic edge elements 161, 162 may be in the form of elastic edging and extend along the first side edge 103 and the second side edge 104 from the front end 101 of the outer cover to one or more waist attachment elements 115, 116 on the first side portion 110 and the second side portion 111, respectively.

[0198] According to an example such as the outer cover of Figures 1a-1b, the ratio of the non-pleated extension of the first and second gathered edge segments 151, 152 to the gathered extension of each of the first and second gathered edge segments 152 is in the range of 2.5:1 to 3.0:1.

[0199] The unpleated extension is measured by laying the outer cover as flat as possible and stretching the elastic edge elements to make the gathered edge segments flat and wrinkle-free, but in an unstretched state, with the measurement taken along the first or second side edge 103, 104, respectively (i.e., following the curve of the side edge 203, 204, rather than parallel to the longitudinal axis Y).

[0200] The gathered extension is measured with the cover laid out as flat as possible and with the elastic edge elements in a relaxed state, i.e., not stretched and at rest. Measurements are again taken along the first or second side edges 103, 104, respectively, in the gathered state.

[0201] By way of example, and as in the outer cover of Figures 1a-1b, the first and second side attachment segments 191, 192 are not pleated.

[0202] When the first and second side attachment segments 191, 192 extend a first distance D beyond the first and second flap attachment segments 193, 194 as proposed herein, the first and second side attachment segments 191, 192 can facilitate the stretching of the first and second elastic edge elements 161, 162 during use of the article. That is, when the article is put on a wearer, opposing lateral forces acting on the first side portion 110 and the second side portion 111 can be transmitted to the chassis portion, stretching the first and second elastic edge elements 161, 162 and the corresponding first and second gathered edge segments 151, 152. Thus, activation of the elastic edge elements can be ensured, resulting in a proper fit of the outer cover.

[0203] By way of example (not shown), the first gathered edge segment 151 and the first side edge segment 191 may be spaced apart by a second longitudinal distance, and the second gathered edge segment 152 and the second side edge segment 192 may be spaced apart by a second longitudinal distance. The second longitudinal distance may be 3 cm or less, preferably 2 cm or less.

[0204] A relatively short second longitudinal distance may facilitate the stretching of the first and second elastic edge elements 161, 162 described above.

[0205] By way of example, and as in the outer cover of FIGS. 1a-1b, the first gathered edge segment 151 continues directly from the first side attachment segment 191, and the second gathered edge segment 152 continues directly from the second side attachment segment 192. (In other words, the second longitudinal distance between the first / second gathered edge segment and the first / second side attachment segment is zero.)

[0206] The first and second gathered edge segments 151, 152, which continue substantially directly from the first side attachment segment 191 and the second side attachment segment 192, allow the opposing lateral forces experienced by the first and second side portions 110, 111 when the article is applied to the wearer to be transmitted particularly efficiently to stretch the first and second elastic edge elements 161, 162.

[0207] By way of example, and as in the outer cover of Figures 1a-1b, the first joint assembly or first joint 181 overlaps with the first elastic edge element 161, and the second joint assembly 182 or second joint 182 overlaps with the second elastic edge element 162, which can be seen in the thickness direction Z.

[0208] The first and second gathered edge segments 151, 152 each extend toward a lateral axis X. By way of example, and as in the outer cover of Figures 1a-1b, each gathered edge segment 151, 152 extends beyond the lateral axis X toward opposite sides of the rear Sb and front Sf of the outer cover.

[0209] 1a-1b, each of the first and second side edges 103, 104 of the outer cover is free of gathered edge segments in the longitudinal portion of the outer cover 100 extending along the side length SL. Thus, the side portions 110, 111 are free of gathered edge segments.

[0210] If the outer cover includes first and second gathered edge segments 151, 152 extending substantially from a position at the front of the outer cover to the crotch end of the side length SL, as in the illustrated example, and if the outer cover does not have gathered edge segments in the vertical portion of the outer cover extending along the side length SL to the rear edge 102, the gathered edge segments 151, 152 may be particularly suitable for providing a fit of the outer cover to the wearer's legs, while the outer cover may extend laterally to provide sufficient coverage for the wearer's buttocks and lower back regions.

[0211] Further, in accordance with examples such as the outer cover of Figures 1a-1b, each of the first side edge 103 and the second side edge 104 may be free of pleated edge segments in a front region of the outer cover, e.g., at least in a longitudinal portion of the outer cover extending from the front edge 101, thereby including front insert fastening members 121, 122.

[0212] Additionally, the leading edge 101 and / or the trailing edge 102 may be free of gathered edge segments, and preferably both the leading edge 101 and the trailing edge 102 are free of gathered edge segments, as gathered segments along the leading and trailing edges are generally undesirable for the improved fit desired in this application. However, in examples, such as the outer cover of FIGS. 1a-1b, all or part of the leading edge 101 and / or trailing edge 102 may be provided with an elastic edge 163 to form a soft and durable leading or trailing edge 101, 102, respectively.

[0213] 1a-1b, the maximum width between the first and second side edges 103, 104 along the first and second gathered edge segments 151, 152 is greater than the lateral insert fastening width oWf spanned by the rear insert fastening areas 141, 142, as will be described in more detail below.

[0214] Outer cover flap member The flap members 140 extend longitudinally toward the lateral axis X from a location adjacent the leading edge 101 or the trailing edge 102, respectively.

[0215] The flap members may have a longitudinal length that is, for example, 20% or less of the outer cover length L, such as 15% or less of the outer cover length L, or 10% or less of the outer cover length. As noted above, the central outer cover length L is measured between the leading edge 101 and the trailing edge 102 at the central longitudinal axis Y. Thus, the central outer cover length L is the length along the central longitudinal axis Y between the leading edge 101 and the trailing edge 102 at the central longitudinal axis Y, i.e., at the center of the minimum cross-crotch width Wmin.

[0216] The relatively short length of the flap members compared to the longitudinal length of the outer cover means that, when viewed in the inward direction of the outer cover, the flap members leave a substantial portion of the inwardly facing side of the main member 150m uncovered. Thus, in use, when the absorbent insert is attached to the outer cover and positioned with its front or rear end in the pocket formed between the flap members 140 and the main member 150m, the absorbent insert forms the inwardly facing side of the absorbent article over this substantial portion. Thus, the flap members 140 leave a substantial portion of the inwardly facing surface of the insert free to receive body exudates from the wearer.

[0217] The flap member 140 may be formed by a separate piece of material, such as a fabric panel, connected to the main member 150m via one or more joints as described above. For example, the flap member 140 may have a leading edge or a trailing edge oriented toward the front chassis edge 101c or the rear chassis edge 102c of the chassis portion, a free edge oriented toward the lateral axis X, and first and second side edges connecting the leading edge or the trailing edge to the free edge.

[0218] The first and second side edges are laterally spaced apart and extend in a longitudinal direction, for example, the first and second side edges can extend essentially parallel to the longitudinal direction of the outer cover.

[0219] The free edge is free from attachment to the main member 150m along at least a majority of its width, allowing a leading or trailing end of the insert to be inserted into a pocket formed between the flap member 140 and the main member 150m, the pocket being open toward the lateral axis X. The free edge may extend essentially parallel to the lateral axis X. Optionally, the free edge may have a slightly curved shape.

[0220] A first side edge of the flap member 140 may be permanently connected to the main member 150m along a first flap attachment segment 193, and a second side edge of the flap member 140 may be permanently connected to the main member 150m along a second flap attachment segment 194, as described above.

[0221] If the flap member 140 is formed from a separate piece of material, the leading or trailing edge of the flap member 140 may be connected to the main member 150m via one or more joints at or adjacent to the leading or trailing edge of the chassis portion 150.

[0222] Alternatively, flap member 140 may be formed from the piece of material that forms main member 150m. In this case, flap member 140 may be folded along a fold line toward main member 150m, such that the fold line forms the front or rear end of flap member 140 and, optionally, the front or rear edge 101c, 102c of chassis portion 150. In such a variation, the first and second side edges of the flap member may be permanently connected to main member 150m as described above, and the flap member may include free edges as described above.

[0223] The flap member may have a lateral width between the first and second flap attachment segments 193, 194 that is essentially the same as the lateral width of the main member 150m.

[0224] For example, the lateral width between the first and second flap attachment segments 193, 194 and / or the lateral width between the first and second side attachment segments 191, 192 can be at least 120% of the minimum lateral crotch width Wmin of the outer cover. Optionally, the lateral width can be at least 130% of the minimum crotch width Wmin of the outer cover, such as at least 140% of the minimum crotch width Wmin of the outer cover.

[0225] By way of example, and as in the illustrated outer cover, the lateral width of the free edge of the flap member 140 may be slightly less than the lateral width between the first and second flap attachment segments 193, 194. This ensures that at least the free edge of the flap member 140 is stretched without risk of bending "upwards" during use of the outer cover.

[0226] Insert fastening area 1a-1b, a waist region WR of the chassis portion is defined laterally between the first and second flap attachment segments 193, 194, the waist region having a waist region length WL. Additionally, the waist region of the chassis portion 150 may include one or more insert fastening areas 141, 142 for releasably fastening an insert to the outer cover. Preferably, the insert fastening areas 141, 142 include at least two insert fastening areas 141, 142 laterally spaced apart on each lateral side of the central longitudinal axis Y.

[0227] By way of example, and as in the outer cover of Figures 1a-1b, at least one of the outward facing side of the flap member 140 forming the pocket and the inward facing side of the main member 150m includes one or more insert fastening areas 141, 142 for releasably fastening an insert to the outer cover.

[0228] 1a-1b, the outward-facing side of the flap member 140 includes one or more insert fastening areas 141, 142 for releasably fastening an insert to the outer cover. Because the one or more insert fastening areas 141, 142 are positioned on the flap member, any undesirable aesthetic impact on the outer cover due to the insert fastening areas (e.g., seams attaching the insert fastening areas to the outer cover) is only visible on the flap member when the outer cover is worn, and is not visible from outside the garment portion. The outward-facing surface of the garment portion is intended to be the outward-facing surface of the finished absorbent article, and therefore faces the wearer's normal clothing when the outer cover is in use.

[0229] Furthermore, positioning the insert fastening area(s) on an outward-facing surface of the flap member away from the garment part means that movement of the garment part is less likely to be restricted by the insert fastening area(s), and therefore the insert, when the outer cover is in use. For example, the area of ​​the garment part over which the flap member extends can follow the overall movement of the garment part, thus giving the garment part a more underwear-like appearance and without visible tension on the garment part resulting from attachment of the insert to the outer cover.

[0230] Likewise, the insert fastening area, and therefore the position of the insert, is less likely to be displaced by, for example, the garment portion being subjected to tearing or friction resulting from the wearer's movements.

[0231] One or more insert fastening areas 141, 142 positioned on the outward-facing inner side of the flap member 140 may be the only insert fastening elements at the front or rear of the outer cover for releasably attaching the insert to the outer cover.

[0232] Preferably, as in the illustrated outer cover, and as described in more detail below, each of the front Sf and rear Sb portions of the outer cover includes one or more front / rear sets of insert fastening areas 141, 142; 121, 122 positioned on the outward-facing inner side of the rear flap member 140 or front flap member 120, respectively, and the front and rear sets of insert fastening areas are the only insert fastening elements of the outer cover for releasably attaching the insert to the outer cover.

[0233] For example, the area of ​​the inward-facing surface of the main member 150m over which the flap member 140 extends (in the use position) may be free of insert fastening areas. Optionally, the entire main member 150m may be free of insert fastening areas. In this way, the only attachment between the outer cover and the insert may be via the flap members 120, 140, which include sets of insert fastening areas 121, 122; 141, 142, which may be configured to releasably fasten to the inward-facing surface of the absorbent insert 200.

[0234] Preferably, one or more insert fastening areas 141, 142 may be completely contained within the flap portion 140, e.g., completely contained within one or more fabric panels of the flap member, preventing direct contact between the fastening areas and the wearer's skin. For example, a flap member may include one or more fabric panels with one or more insert fastening areas contained within the one or more fabric panels. By "completely contained," it is meant that the one or more insert fastening areas do not extend beyond, e.g., do not protrude from, the one or more flap members / fabric panels.

[0235] For example, the insert fastening area may be provided by an insert fastening member attached to one or more fabric panels, as further described below.

[0236] For example, each insert fastener member may include at least one insert fastener area.

[0237] Each insert fastener member may be attached to the chassis portion 150 of the outer cover in the waist region WR.

[0238] By way of example, the insert fastening member may be attached to the outward facing side of the flap member 140, such as the outer cover of FIGS. 1a-1b.

[0239] For example, the insert fastening element may include a base formed from a sheet having a length in a longitudinal axis direction and a width in a transverse axis direction, the base formed from the sheet including one or more areas of a surface fastening material, i.e., a first or second surface fastening material.

[0240] Preferably, each insert fastening element comprises a single insert fastening area comprising the surface fastening material, i.e., the first or second surface fastening material, which may be advantageous to reduce the amount of material added to the insert and / or the additional stiffness implied by the presence of the insert fastening element in the outer cover.

[0241] For example, the insert fastening member can be a piece of hook or loop material. The hook and loop material can be a material including a base formed from a sheet having a surface on which the hooks and loops are disposed. For example, the insert fastening member can be formed from a piece of hook and loop material cut from a strip of hook or loop material.

[0242] To ensure that the outer cover is washable, the insert fastening area, e.g., the surface fastening material of the insert fastening member, should be reusable and washable.

[0243] Front of outer cover 1a-1b, the rear portion Sb of the reusable outer cover includes first and second side portions 110, 111 and a flap member 140 (which may be referred to as a rear flap member) as described above. As noted above, the outward-facing side of the rear flap member 140 includes one or more rear insert fastening areas 141, 142 for releasably fastening an insert to the outer cover.

[0244] Additionally, as in the illustrated outer cover, the front portion Sf of the outer cover may include a separate flap member, sometimes referred to as a front flap member 120. The front flap member 120 may be attached to the main member 150m to form a pocket in its front portion.

[0245] Additionally, the front Sf of the reusable outer cover may include one or more front insert fastening areas 121, 122 for releasably fastening an insert to the outer cover.

[0246] By way of example, as in the outer cover of Figures 1a-1b, the outward facing side of the front flap member 120 includes one or more front insert fastening areas 121, 122 for releasably fastening an insert to the outer cover.

[0247] The rear insert fastening areas 141, 142 and the front insert fastening areas 121, 122 may be the only insert fastening areas of the outer cover. For example, the crotch portion Sc of the outer cover may not have insert fastening areas 121, 122, 141, 142.

[0248] By way of example, and as in the outer cover of Figures 1a-1b, the front of the outer cover includes one or more sets of insert fastening areas 121, 122, and the rear of the outer cover includes one or more sets of insert fastening areas 141, 142, each of which includes a surface fastening material to provide a releasable attachment to an insert.

[0249] Each set of insert fastener areas spans a lateral fastening width oWf, which may preferably be equal to or greater than the minimum lateral width Wmin of the outer cover.

[0250] Horizontal fastening width of insert fastening area As mentioned above, the outer cover may include a set of rear insert fastening areas 141, 142 and optionally also a set of front insert fastening areas 121, 142, each set spanning a lateral fastening width (for simplicity, in Figures 1a-1b, oWf is shown only for the rear set of insert fastening areas 141, 142). The lateral fastening width may preferably be equal to or greater than the minimum lateral width Wmin of the outer cover, i.e., equal to or greater than the crotch width of the outer cover.

[0251] Thus, the front set of one or more insert fastening areas and the rear set of one or more insert fastening areas allow the insert to be attached in place so that it is stretched laterally to a sufficient width at the front and rear, respectively, while at least in a portion of the crotch area, the insert can be conformed to a cup shape generally within the minimum lateral width of the outer cover.

[0252] For example, each lateral fastening width oWf may be 110% or more of the minimum lateral width (crotch width) Wmin of the outer cover, such as 120% or more of Wmin.

[0253] Thus, the lateral fastening width oWf is equal to or greater than the smallest elastic leg element spacing width measured between the first and second elastic elements 161 , 162 of the outer cover 100 .

[0254] The lateral fastening width oWf may preferably be less than the maximum elastic leg element spacing width measured between the first and second elastic elements 161, 162 of the outer cover.

[0255] This may ensure that when the insert 200 is attached to the outer cover 100, the elastic elements 161, 162 of the outer cover help to provide the correct position of the insert relative to the wearer.

[0256] Furthermore, the outer cover may provide the necessary lateral tension to the attached insert 200 during use, thereby ensuring that the insert leg elastic members 210, 211 and inner barriers 260, 261 are stretched into the correct position (see Figure 4).

[0257] For example, and in the illustrated variation, each of the front and rear sets of insert fastener areas may include a first subset of insert fastener areas 121; 141 and a second subset of insert fastener areas 122; 142, the first and second subsets being laterally spaced apart by a lateral spacing width oWs. To further ensure proper positioning and molding of the insert relative to the outer cover, the lateral fastener spacing width oWs may be equal to or greater than the minimum lateral width oWc of the outer cover.

[0258] For example, the lateral separation width oWs between the front and rear sets may be at least 120% of the minimum lateral width.

[0259] In this manner, the first and second subsets of one or more insert fastening areas in the front and rear sets can ensure that the insert extends beyond at least the crotch width of the outer cover when attached to the fastening areas.

[0260] For example, in the front set and / or rear set, the lateral spacing width may be at least twice the lateral width of each insert fastener area, such as at least three times the lateral width of each insert fastener area, or at least four times the lateral width of each insert fastener area.

[0261] For example, in the front set and / or the rear set, the lateral spacing width may be 40% or more of the lateral fastening width, such as 50% or more or 60% or more of the lateral fastening width.

[0262] Therefore, the outer cover may be free of fastening areas across the lateral spacing width oWs. This means that the insert may not be attached to the outer cover in the central lateral region of the outer cover, which may be advantageous for molding the insert during use. For example, the spacing arrangement allows the insert to assume a slight cup shape when viewed from the side, improving the insert's retention ability. Furthermore, if the outer cover is free of insert fastening areas across the lateral spacing width, the surface fastening material of the insert fastening areas is provided only where necessary, which suggests that the amount of material in the outer cover may be reduced.

[0263] Also, for example, when provided with an insert fastening member having a relatively low extensibility, the insert fastening area may exhibit relatively low extensibility, and it may be desirable to limit the elongation of the insert fastening area to reduce their effect on the extensibility of the outer cover.

[0264] For example, in at least one, and preferably each, of the front and rear portions of the outer cover, the set of one or more insert fastening areas spans a lateral fastening width oWf, which oWf is greater than or equal to the minimum lateral width Wmin, for example, the lateral fastening width oWf is greater than or equal to 110% of the minimum lateral width Wmin, or greater than or equal to 120% of the minimum lateral width Wmin.

[0265] Waist attachment element and corresponding attachment element As mentioned above, each of the first side portion 110 and the second side portion 111 includes one or more waist attachment elements 115, 116 for detachably fastening to the other side portion 115, 116 or the front side portion, or the front of the outer cover.

[0266] According to an example such as the outer cover of Figures 1a-1b, each of the first side portion 110 and the second side portion 111 comprises one or more waist attachment elements 115, 116 for releasably fastening to the front of the outer cover.

[0267] According to an example such as the outer cover of Figures 1a-1b, one or more waist attachment elements 115, 116 of the first side portion 110 and the second side portion 111 are positioned so as not to extend toward the lateral axis X beyond the waist region length WL.

[0268] According to an example such as the outer cover of Figures 1a-1b, the one or more waist attachment elements 115, 116 of the first side portion 110 and the second side portion 111 are limited to a longitudinal region of the outer cover extending along the waist region length WL.

[0269] For example, one or more waist attachment elements 115, 116 may be disposed on an inward-facing side of each of the first and second side portions 110, 111.

[0270] 1a-1b, the other of the front and back portions of the outer cover, preferably the front portion of the outer cover (as in the illustrated example), includes one or more corresponding attachment elements 117, 118 (see FIG. 2) for releasably fastening to the waist attachment elements 115, 116. The one or more corresponding attachment elements 117, 118 may be located on an outward-facing side of the outer cover.

[0271] 1a-1b, one or more corresponding attachment elements 117, 118 may provide for releasable fastening of the waist attachment elements 115, 116 in a number of different positions, thereby allowing for a number of different waist widths measured along the waist of the outer cover when the outer cover is in the closed position. Thus, the waist size can be adapted to the wearer, thus ensuring that the side portions 110, 111 are exposed to lateral forces when the article is worn.

[0272] The waist attachment elements 115, 116 and corresponding attachment elements 117, 118 may include any type of fastening area similar to those described herein with respect to the insert fastening area of ​​the outer cover or the cover fastening area of ​​the insert. For example, the waist attachment elements 115, 116 and corresponding attachment elements 117, 118 may include mechanical and / or friction releasable attachments with complementary surface fastening materials such as corresponding hook and loop or hook and hook.

[0273] Trailing and leading edges 1a-1b, the rear edge 102 extends essentially parallel to the lateral axis X over a width that is at least equal to the minimum crotch width Wmin of the outer cover. Preferably, the rear edge 102 extends essentially parallel to the lateral axis X over a width that is equal to the side portions of the outer cover.

[0274] 1a-1b, the trailing edge 102 extends essentially parallel to the lateral axis X across at least the minimum crotch width Wmin of the outer cover 100. In accordance with examples such as the outer cover of FIGS. 1a-1b, the trailing edge 102 extends essentially parallel to the lateral axis X across its entire width.

[0275] 1a-1b, the leading edge 101 extends essentially parallel to the lateral axis X over a width that spans at least the minimum crotch width Wmin of the outer cover 100. In the example of the outer cover such as that of FIG. 1a-1b, the leading edge 101 extends essentially parallel to the lateral axis X over its entire width.

[0276] If the leading edge 101 and the trailing edge 102 extend across their width essentially parallel to the lateral axis X, a straight, continuous waist edge may be formed when the outer cover 100 is worn, which may be desirable for fit and comfort.

[0277] Symmetry According to an example such as the outer cover of FIGS. 1a-1b, the chassis portion 150 of the outer cover may be symmetrical about a central longitudinal axis Y.

[0278] According to an example such as the outer cover of FIGS. 1a-1b, the entire outer cover may be symmetrical about a central longitudinal axis Y.

[0279] Outer cover structure 3a-3e show examples of components that may make up the outer cover of FIGS. 1a-1b.

[0280] 3a shows a main member 150m of the chassis portion 150 of the outer cover. The main member 150m includes a chassis leading edge 101c that forms part of the leading edge 101 of the outer cover 100. By way of example, and as shown, the chassis leading edge 101c constitutes the entire leading edge 101 of the outer cover.

[0281] The main member 150m further includes a chassis portion trailing edge 102c that forms part of the trailing edge 102 of the outer cover. By example, and as shown, the trailing edge 102 of the outer cover also includes the trailing edges of the first side portion 110 and the second side portion 111.

[0282] The main member 150m further includes a first chassis side edge 103c and a second chassis side edge 104c, which connect the chassis leading edge 101c and the chassis trailing edge 102c.

[0283] As shown in FIG. 3a, each of the first and second chassis side edges 103c, 104c may be divided into different segments 191, 193, 151; 192, 194, 152.

[0284] The first chassis side edge 103c includes a first side attachment segment 191. The first side portion 110 is attached to the chassis portion 150 along the first side attachment segment 191. Additionally, the first chassis side edge 103c includes a first flap attachment segment 193. The flap member 140 is attached to the main member 150m along the first flap attachment segment 193.

[0285] 3a, the first flap attachment segment 193 is part of the first side attachment segment 191. The first side attachment segment 191 extends a longitudinal length D beyond the first flap attachment segment 193 toward the lateral axis X, as described above.

[0286] Similarly, second chassis side edge 104c includes a second side attachment segment 192. Second side portion 111 is attached to chassis portion 150 along second side attachment segment 192. Additionally, second chassis side edge 103c includes a second flap attachment segment 193. Flap member 140 is attached to main member 150m along second flap attachment segment 193.

[0287] 3a, the second flap attachment segment 194 is part of the second side attachment segment 192. The second side attachment segment 192 extends a longitudinal distance D beyond the second flap attachment segment 194 toward the lateral axis X, as described above.

[0288] The first and second side attachment segments 191, 192 extend along a side attachment length SL. The first and second flap attachment segments 193, 194 extend along a flap attachment length that is also the waist region length WL.

[0289] By way of example, and as in FIG. 3 a, the first and second side mounting segments 191 , 192 each extend substantially parallel to the longitudinal axis Y.

[0290] 3a, first chassis side edge 103c includes first gathered edge segment 151, and second chassis side edge 104c includes second gathered edge segment 152. By example, and as shown, first gathered edge segment 151 and second gathered edge segment 152 follow generally directly from first side attachment segment 191 and second side attachment segment 192.

[0291] Elastic edge elements (see Figures 1a-1b) are applied to the first chassis side edge 103c and the second chassis side edge 104c to gather and gather the first gathered edge segment 151 and the second gathered edge segment 152 as described above.

[0292] 3a, the first and second chassis side edges 103c, 104c define an hourglass shape for the primary member 150m, such that the primary member 150m has a narrowest width along the lateral axis X at the crotch region Sc of the outer cover 100. For example, as shown, the gathered edge segments 151, 152 of the first and second chassis side edges 103c, 104c may be bent to form a narrowest width along the lateral axis X at the crotch region Sc of the outer cover 100.

[0293] By way of example, and as in Figures 1a and 3a, in the front / rear portion Sc of the outer cover including the side portions 110, 111, the main member 150m has a widest width along the lateral axis X that approximately corresponds to the width between the first and second side edge segments 191, 192.

[0294] 3d and 3e show second side portion 111, which includes a first side edge, a second side edge, a rear edge, and a front edge. Waist attachment member 116 is disposed adjacent to the second side edge. The first side edge has a side edge length substantially equal to side attachment length SL. Thus, second side portion 111 is attached to chassis portion 150 by attaching the first side edge of second side portion 111 to second side attachment segment 192 of main member 150m.

[0295] In a similar manner, the first side portion 110 (not shown) is attached to the chassis portion 150 by attaching a second side edge of the first side portion 110 to the first side attachment segment 191 of the main member 150m.

[0296] 3b shows flap member 140, in this example rear flap member 140. Rear flap member 140 includes a trailing edge, a leading edge toward lateral axis X, and two laterally spaced side edges, as described above. The first side edge is attached to a first flap attachment segment 193 of primary member 150m, and the second side edge is attached to a second flap attachment segment 194 of primary member 150m.

[0297] 1a-b, the first joint 181 may attach a first side edge of the flap member 140 to a first flap attachment segment 193 of the main member 150m and a side edge of the first side portion 110 to a first side attachment segment 191 of the main member 150m. Similarly, the second joint 182 may attach a second side edge of the flap member 140 to a second flap attachment segment 194 of the main member 150m and a side edge of the second side portion 111 to a first side attachment segment 192 of the main member 150m.

[0298] Additionally, one or more joints may attach the trailing edge of the flap member 140 to the main member 150m to form a closed pocket that is open toward the lateral axis X.

[0299] By way of example, and as in the illustrated outer cover, the free edge of the flap member 140 may have a lateral width that is slightly less than the lateral width between the first flap attachment segment 193 and the second flap attachment segment 194. For example, the leading or trailing edge of the flap member may have a lateral width that is greater than the edge, i.e., the free edge, toward the lateral axis X. This ensures that at least the free edge of the flap member 140 is stretched and therefore does not risk folding "upward" during use of the outer cover. As illustrated in FIG. 3b, the width of the flap member 140 may taper from a maximum width toward the leading / trailing edge of the outer cover to a minimum width toward the lateral axis X, i.e., at the free edge of the flap member.

[0300] As can be seen in FIG. 3c, the flap member 140 may further include a set of insert fastening areas 141, 142 arranged on the outward facing side of the flap member 140, i.e., so that the fastening material of the insert fastening areas 141, 142 faces the inward facing side of the main member 150m, as described above.

[0301] 3c shows another flap member 120, in this example, front flap member 120. The front flap member 120 includes a leading edge, a trailing edge toward the lateral axis X, and two laterally spaced side edges. The first side edge may be attached to the main member 150m by one or more joints along the front of the first chassis side edge 103c, and the second side edge may be attached to the main member 150m by one or more joints along the front of the second chassis side edge 104c. Additionally, one or more joints may attach the leading edge of the flap member 120 to the main member 150m, thereby forming a closed pocket that is open in the direction of the lateral axis X.

[0302] Similar to the rear flap member 140, the free edge of the front flap member 120 may have a lateral width slightly less than the lateral width between the front of the first chassis side edge 103c and the second chassis side edge 104c to which it is attached (see FIG. 1a).

[0303] Fabric stretch rate in outer cover construction By way of example, and as shown in FIG. 1b, the chassis portion 150 includes a waist region WR that extends along the waist region length WL, i.e., along the length of the flap member 140. Thus, in the waist region WR, the chassis portion 150 may include two layers of fabric (one layer from the main member 150m and one layer from the flap member 140), such that the waist region WR exhibits a fabric stretch rate that corresponds to the fabric stretch rate of the two layers of fabric (see FIGS. 1a-1b).

[0304] In contrast, an intermediate region IR extending laterally between the first and second side attachment segments 191, 192 and extending longitudinally along the first distance D exhibits a fabric stretch corresponding to the fabric stretch of a single fabric layer.

[0305] The primary member 150m may include a single layer of fabric material, as in the illustrated example. Thus, the intermediate region IR extending along the distance D between the side joins 181, 182 exhibits a fabric stretch rate corresponding to the fabric stretch rate of a single fabric layer. However, the primary member 150m may also include multiple fabric panels, as in the illustrated example. For example, the primary member 150 may include two fabric panels joined at a lateral joint 183. The lateral joint 183 extends essentially parallel to the lateral axis X and extends in the crotch region Sc of the outer cover. For example, as in the illustrated variation, the lateral joint 183 may extend between the gathered edge segments 151, 152. The lateral joint 183 allows for adjustable stretch in the crotch region Sc of the outer cover. Thus, the primary member 150m may include first and second halves joined at a lateral joint 183, as in the illustrated example. Each half may include a single fabric layer. Thus, like the outer cover of Figures 1a-1b, the outer cover may further include a first crotch region CR1 extending longitudinally from the intermediate region IR to the lateral joint 183, and a second crotch region CR2 extending longitudinally from the lateral joint 183 towards the front of the outer cover.

[0306] The front of the outer cover may include a second waist region WR2 having a front flap member 120 attached to a main member 150m, as in the illustrated variation.

[0307] The mid-region IR has a first lateral fabric stretch rate, and the waist region WR has a second lateral fabric stretch rate, the second lateral fabric stretch rate being less than the first fabric stretch rate.

[0308] In this example, the difference between the first lateral fabric stretch rate and the second lateral fabric stretch rate is achieved by the waist region WR including a first number of layers of fabric material and the intermediate region IR including a second number of layers of the same fabric material.

[0309] In other variations, the waist region WR and the intermediate region IR may contain different textile materials, but it is advantageous in terms of manufacturing and durability of the outer cover during washing to have the waist region WR and the intermediate region IR contain the same textile material. In other words, the textile material of one or more layers of the waist region and the textile material of one or more layers of the intermediate region are the same textile material.

[0310] Advantageously, and as in the outer cover shown, all areas making up the outer cover may comprise the same fabric material.

[0311] By "same textile material" it is meant that the textile material is identical in all material properties, such as when layers of the same textile material come from the same roll of textile material. However, it is understood that color may vary between regions and still be considered the "same textile material" as long as the color difference does not impart other significant differences between the "same textile material" textile materials.

[0312] As mentioned above, the second cross-direction fabric stretch rate can be in the range of 30% to 70% of the first cross-direction fabric stretch rate, for example, 40% to 60% of the first cross-direction fabric stretch rate. In the illustrated outer cover, the second cross-direction fabric stretch rate is 45% to 55% of the first cross-direction fabric stretch rate, i.e., approximately 50% of the first cross-direction fabric stretch rate.

[0313] By way of example, and as described above in connection with Figure 3d, the first and / or second side portions 110, 111 may each comprise a double layer of textile material. For example, as shown in Figure 3d, the first and / or second side portions 110, 111 may be formed by a panel of textile material folded along a fold axis F to form the first / second side portions comprising two layers of fabric.

[0314] In this way, the first and second side portions 110, 111 can form first and second side regions SR1, SR2, respectively, that exhibit fabric stretch rates corresponding to the fabric stretch rates of the double fabric layers.

[0315] The double fabric layer of the first / second side regions SR1, SR2 may advantageously be from the same textile fabric as the layers in the main member 150m and flap member 140, or the layers in the intermediate region IR and waist region WR.

[0316] Therefore, each of the first and second side regions SR1, SR2 has a side lateral fabric stretch rate that is lower than the first lateral fabric stretch rate.

[0317] Like the waist region WR, the first and second side regions SR1, SR2 comprise a double layer of fabric material, so that the side lateral fabric stretch rate is approximately the same as the second lateral fabric stretch rate of the waist region WR.

[0318] Therefore, the side lateral fabric stretch rate is 30% to 70% of the first lateral fabric stretch rate of the intermediate region IR, for example, 40% to 60% of the first lateral fabric stretch rate. In the illustrated example, the side lateral fabric stretch rate is 45% to 55% of the first lateral fabric stretch rate, i.e., approximately 50% of the first lateral fabric stretch rate.

[0319] Absorbent inserts In use, the absorbent insert is releasably attached to the outer cover to form the absorbent article. The outer covers described herein can be adapted to be used in combination with different absorbent inserts that provide different absorbent capacities to accommodate the wearer's needs, and / or that are optionally intended for different uses, such as for daytime or nighttime use.

[0320] The absorbent insert may in some variations be reusable, so that the insert can be cleaned or otherwise restored after being used to absorb bodily fluids.

[0321] The absorbent insert may in some variations be disposable, such that the insert is discarded after being used to absorb bodily fluids. If the absorbent insert is disposable, it may in some variations be, for example, biodegradable or partially or fully recyclable.

[0322] FIG. 4 shows an embodiment of an absorbent insert that is releasably attachable to the outer cover of FIGS. 1a-1b.

[0323] 4 shows variations of insert 200, with the insert laid out flat and viewed from the interior of the insert, and one skilled in the art will recognize that outer cover 100 is reusable and therefore can be used in combination with a variety of different inserts that may have similar or different features to those shown in FIG 4. Some non-limiting possible variations have already been set forth in this description.

[0324] By way of example, and like the insert of Figure 4, the insert 200 has a liquid permeable topsheet 205, a liquid impermeable backsheet 206, and an absorbent assembly 230. The insert 200 may, as in the illustrated variation, include inner leakproof barriers 220, 221. The insert 200 may, as in the illustrated variation, include insert leg elastic members 210, 211. The insert 200 includes a front set of cover fastening areas 221, 222 located at the front iSf of the insert and a rear set of cover fastening areas 241, 242 located at the rear iSb of the insert.

[0325] General structure of absorbent inserts Top sheet As noted above, the insert comprises a liquid impervious backsheet, a liquid pervious topsheet, and an absorbent assembly provided between the topsheet and the backsheet.

[0326] Materials suitable for topsheets are commonly known in the field of disposable absorbent sanitary products, and for the purposes of this disclosure, any material commonly used for use as a topsheet material can be used, including, but not limited to, nonwoven materials and porous polymeric films.

[0327] The topsheet is suitably sufficiently liquid pervious to permit exuded body fluids, such as urine, to penetrate through its thickness and is suitably manufactured from a material that is flexible and feels soft against the wearer's skin.

[0328] The topsheet can be made from web materials such as woven and nonwoven webs, porous films, open-cell foams, or combinations or laminates of the foregoing materials.

[0329] Nonwoven materials suitable for the topsheet can be made from synthetic fibers, such as polyester or polypropylene, or natural fibers, such as cotton fibers. Blends of synthetic and natural fibers can also be used.

[0330] The nonwoven material used in the topsheet can be made, for example, from a spunbond, a spunbond / spunbond composite, or a spunbond / meltblown composite, such as SMS, SSMS, SSMMS, SMMS, a polypropylene nonwoven material, or a bicomponent fiber nonwoven material of polypropylene and polyethylene, or a combination of these materials. The topsheet can have elastic properties.

[0331] The topsheet can be subjected to a hydrophilizing treatment to improve the tendency of urine to penetrate through the topsheet into the underlying structure. Methods for hydrophilizing nonwovens are known and include coating the nonwoven material with a hydrophilic coating, for example, by applying a surfactant coating; applying a hydrophilic monomer composition and a radical polymerization initiator to the nonwoven and then initiating a polymerization reaction on the nonwoven; applying a coating of hydrophilic nanoparticles; or treating the nonwoven surface with a high-energy treatment.

[0332] The surfactant coating can be obtained by applying a surfactant composition to the nonwoven material by any suitable means, including, for example, spraying, slot coating, kiss roll coating, or immersing the material in a bath containing the surfactant. The hydrophilization treatment can be performed in-line during the assembly of the absorbent sanitary product, or separately, or the topsheet can be supplied to the absorbent sanitary product manufacturing plant as a ready-to-use roll.

[0333] The basis weight of the top sheet material is 8 to 20 g / m 2 , e.g., 12 to 17 g / m 2 However, the present disclosure is not limited to topsheet materials having only this basis weight.

[0334] back seat Materials suitable for the backsheet are generally known in the field of absorbent sanitary products. The backsheet may be substantially impermeable to liquids such as urine.

[0335] The backsheet may be breathable. A breathable backsheet is beneficial to the comfort and skin health of the wearer. The insert disclosed herein is intended to be used with the outer cover disclosed herein to form an absorbent assembly. The use of a breathable backsheet may enable the formation of an absorbent assembly with sufficient breathability.

[0336] The backsheet may be substantially liquid impermeable yet breathable, meaning that air and other gases may pass through the backsheet, while being substantially impermeable to liquids.

[0337] For purposes of this disclosure, the backsheet can include any material commonly used as a backsheet material, including, but not limited to, polymeric films such as films of polyethylene, polypropylene, or copolymers of polyethylene or polypropylene, hydrophobically treated nonwoven materials, liquid-impermeable foams, and liquid-impermeable laminates.

[0338] The backsheet may comprise one or more layers of material. For example, the backsheet may be a laminate consisting of a liquid-impermeable polymeric film facing the absorbent assembly and a nonwoven fabric facing the garment, providing a soft, textile-like feel to the outward-facing surface of the absorbent sanitary product.

[0339] It is also envisioned that the backsheet may be made from or include, in whole or in part, an elastic material to provide a better fit for the product in use.

[0340] However, in the insert of the present invention, it is believed to be advantageous if the backsheet comprises a nonwoven fabric, for example it may be advantageous for the backsheet to be a laminate of a porous polymer film and a nonwoven fabric.

[0341] absorbent core The absorbent assembly can include one or more absorbent cores. The core can be composed of one or more layers of cellulosic fluff pulp. The cellulosic fluff pulp can be mixed with fibers or particles of superabsorbent polymer material (so-called superabsorbent polymers), a type of material that chemically binds large amounts of liquid upon absorption to form a liquid-retaining gel. The absorbent core can also include superabsorbent polymer material disposed as a layer within the absorbent core or attached to one or more surfaces of the absorbent core. The absorbent core can further include additional components to improve the properties of the absorbent core. Examples of such components include bonding fibers, various liquid-dispersion layers or fibers, dimensionally stabilizing components, reinforcing fibers, etc.

[0342] Superabsorbent polymers are well known in the field of absorbent products and are used to improve the absorption properties of such products. Superabsorbent polymers are composed of water-swellable, water-insoluble polymers that, when forming hydrogels, can absorb large amounts of fluid, for example, at least 5 times their weight in 0.9% saline solution, as measured according to the method of NSWP 241.0.R2. Superabsorbent polymers used in accordance with the present disclosure can be inorganic or organic cross-linked hydrophilic polymers, such as polyvinyl alcohol, polyethylene oxide, cross-linked starch, guar gum, xanthan gum, cross-linked polyacrylate, etc. These polymers can exist in the form of, for example, powders, granules, microparticles, films, foams, or fibers. Upon contact with liquid, such superabsorbent polymers swell and absorb the liquid into their structure. Generally, superabsorbent polymers can rapidly absorb liquids injected into such products, retain the liquid to prevent leakage, and help provide a dry feeling even after the liquid is injected.

[0343] The types of superabsorbent polymers used in the absorbent assemblies of the embodiments discussed herein can be the same or different within the assembly. For example, a superabsorbent polymer having a first set of properties can be used in the front and rear regions of the absorbent assembly or in the first absorbent core, and a superabsorbent polymer having a second set of properties can be used in the central region of the absorbent assembly or in the second absorbent core. Properties referred to in this section include, for example, centrifuge retention capacity, absorbency under load, and / or gel layer permeability.

[0344] Thus, the absorbent assembly of the insert proposed herein may advantageously comprise a superabsorbent polymer, for example, the absorbent assembly may comprise a superabsorbent polymer and cellulose fibers.

[0345] For example, the absorbent assembly can include a superabsorbent polymer concentration of at least 15% by weight based on the total weight of the cellulose fibers and superabsorbent polymer.

[0346] The absorbent assembly can include a first absorbent layer and a second absorbent layer, the first and second absorbent layers laminated between a backsheet and a topsheet.

[0347] Thus, the superabsorbent polymer may be present in either or both of the first and second absorbent layers.

[0348] Acquisition layer The insert may further include an acquisition layer applied between the topsheet and the absorbent assembly. Materials suitable as acquisition layers, also known in the art as transfer layers or ADLs, are widely known in the field of absorbent hygiene products, and for purposes of this disclosure, any material recognized by those skilled in the art as useful as an acquisition layer may be used. The acquisition layer may be in the form of, for example, an airlaid layer, a spunlace layer, a high-loft layer, a foam, or any other type of material layer that can be used to function as a liquid acquisition and absorption layer in absorbent hygiene products. The acquisition layer is suitably adapted to rapidly receive and temporarily store excreted liquid before it is absorbed by the absorbent core. Such an acquisition layer may be composed of, for example, an airlaid nonwoven, a spunlace nonwoven, a high-loft nonwoven, or a foam material. Airlaid nonwovens can be made from fluff, wood pulp, where fluff fibers are dispersed in a high-velocity air stream and condensed onto a moving screen by pressure and vacuum. The acquisition layer may be an air-permeable bonded nonwoven, preferably made of polyester fibers.

[0349] Further characteristics of the insert in relation to the absorbable assembly The absorbent assembly may be positioned primarily in the crotch region of the insert and may have an absorbent assembly length spanning no more than 70% of the longitudinal length of the insert, such as no more than 85% of the longitudinal length of the insert.

[0350] Thus, the absorbent assembly does not extend to the leading and trailing edges of the insert, preventing liquid from pooling near the edges positioned within the flap members of the outer cover, thereby reducing the risk of soiling the outer cover and allowing the outer cover to be reused without the need for cleaning.

[0351] For example, the front and rear sets of cover fastening areas may be limited to the portions of the insert that extend longitudinally beyond the absorbent core toward the front or rear edge, respectively, so that the attachment of the insert to the outer cover remains unchanged regardless of whether the insert has absorbed any amount of liquid.

[0352] The absorbent core may be hourglass shaped with its narrowest width laterally at the longitudinal center of the crotch portion of the insert.

[0353] By hourglass shape, it is meant herein that the absorbent core has its narrowest width at the crotch portion of the insert, and that the width of the absorbent core towards the front and rear, respectively, is wider than the narrowest width.

[0354] In other alternatives, the absorbent core may have other shapes, such as rectangular or oval.

[0355] Optionally, the longitudinal edges of the insert partially conform to the hourglass shape of the absorbent assembly.

[0356] Thus, the insert may have a shape that has its narrowest width laterally at the crotch portion of the insert.

[0357] In another alternative, the insert may have a rectangular shape.

[0358] The insert may have a length along the longitudinal axis that is greater than its width along the transverse axis.

[0359] For example, the insert may have a total absorbent capacity of at least 1000ml, for example from 1000ml to 4000ml, and is therefore suitable for use in an absorbent article that is an incontinence article suitable for an adult wearer.

[0360] In some variations, the absorbent assembly is symmetrically positioned about a central lateral axis of the insert, such that the insert provides similar absorbent function regardless of the front-to-back orientation of the insert relative to the wearer.

[0361] In some variations, the absorbent assembly is asymmetrically positioned relative to the central lateral axis of the insert. Thus, depending on the front-to-rear orientation of the insert relative to the wearer, the insert may exhibit different absorbent capabilities. For example, the absorbent assembly may provide a higher absorbent capacity in the region between the central lateral axis and the rear edge of the insert than in the region between the central lateral axis and the front edge of the insert.

[0362] The insert 200 extends along a longitudinal direction Y and a transverse direction X. The topsheet 205 forms a portion of the innermost surface of the insert 200 facing inward direction Zi and is intended to be oriented toward the wearer when the absorbent article is worn. The backsheet 206 forms at least a portion of the outermost surface of the insert 200 and faces outward direction Zo. The absorbent assembly 230 is enclosed between the topsheet 205 and the backsheet 206. The backsheet can cover the entire surface area of ​​the insert 200, i.e., the backsheet forms the outermost surface of the insert 200. Thus, the width iW and length iL of the insert 200 can be equal to the width and length of the backsheet.

[0363] The liquid-permeable topsheet 205 can be made of any material suitable for the purpose. Common examples of liquid-permeable topsheet materials include nonwoven materials, perforated plastic films, plastic or textile meshes, and liquid-permeable foam layers. Liquid-permeable cover materials made of continuous fine fibers that extend predominantly in the machine or cross direction of the article are also common. Laminates made of two or more of the above possible cover materials are also common, such as covers made of different materials in different surface areas.

[0364] The liquid-impermeable backsheet 206 may extend all the way around and beyond the absorbent assembly 230. The backsheet may be made of a variety of different materials. The backsheet may be made of a thin, liquid-impermeable plastic film, although other types of liquid-impermeable materials may be used, such as a plastic coating, a liquid-tight foam layer, a liquid-tight adhesive, or a nonwoven material that has been made liquid-tight by similar means. The backsheet may also be made of a liquid-impermeable, vapor-permeable material, i.e., a liquid-tight, breathable material.

[0365] Along the entire periphery of the absorbent assembly 230, on the outside, the innermost layer of the insert 100, including the liquid permeable topsheet 205, is attached to the backsheet 206. The innermost layer, including the liquid permeable topsheet 205, and the backsheet may be attached to one another by a number of different means. Examples of attachment means include gluing, heat sealing, ultrasonic welding, etc.

[0366] The absorbent assembly 230, as shown, has a length and width that is smaller than the innermost layers, including the topsheet 205, and the backsheet 206, and therefore resides in a central region of the insert 200 where liquids and feces are discharged from the wearer's body. This results in a lower profile and more comfortable design, which may be preferred. However, those skilled in the art will recognize that alternative sizes, shapes, and configurations of the absorbent assembly 230 may be suitable for use in the absorbent articles presented herein. As shown in FIG. 2a, the absorbent assembly 230 may have a longitudinal length iLc.

[0367] For example, as shown in the drawings, the absorbent assembly 230 may have an hourglass shape and is designed to be positioned in the narrowest area between the wearer's thighs when worn. The longitudinal side edges 203, 204 of the innermost layers, including the topsheet 205, and of the backsheet 206 also correspond to this hourglass shape. This allows the insert to fit more form-fittingly than if it were rectangular, thus improving comfort when worn.

[0368] The absorbent assembly 230 may, as in the illustrated variation (FIG. 4), comprise a first layer 231 and a second layer 232. Additionally, the absorbent assembly may comprise a liquid-receiving layer 233.

[0369] The liquid-acquiring layer 233 is positioned directly beneath the topsheet 205 and is adapted to rapidly absorb and temporarily store large amounts of liquid, then release the temporarily stored liquid to other portions of the absorbent assembly 230. Alternative configurations of the absorbent assembly 230 are contemplated, and the second layer 232 and the liquid-acquiring layer 233 may be considered optional, independent of one another. The absorbent assembly itself may be constructed similarly to known absorbent assemblies and, therefore, may be composed of one or more layers of cellulosic fluff pulp. To this end, the cellulosic fluff pulp may be mixed with fibers or particles of highly absorbent polymeric materials (known as superabsorbents), a type that chemically binds large amounts of liquid upon absorption to form a liquid-containing gel. The absorbent assembly 230 may also include highly absorbent polymeric materials disposed as a layer within the absorbent body or in combination with one or more surfaces of the absorbent body. Additional components to enhance the properties of the absorbent assembly 230 may also be present in the absorbent assembly 230. Examples of such components include bonding fibers, different types of liquid distribution layers or fibers, shape stabilizing components, reinforcing fibers, etc. The absorbent assembly 230 can, of course, also be made of other types of absorbent materials, such as absorbent nonwoven materials, absorbent foams, textile materials, peat, or mixtures of different types of absorbent materials.

[0370] A central transverse axis X, shown in FIG. 2a, divides the insert 200 into a front half and a rear half.

[0371] In some variations, the insert 200 may be symmetrical about the central lateral axis X. Accordingly, the absorbent assembly 230 may be symmetrical about the central lateral axis X of the insert 200. In this case, the insert 200 may provide essentially the same absorbent function in the front and rear halves of the insert 200.

[0372] In some variations, the insert 200 may be asymmetrical relative to the central lateral axis X. Accordingly, the absorbent assembly 230 may be asymmetrical relative to the central lateral axis X of the insert 200. In this case, the insert 200 may provide different absorbent functions in the front and rear halves of the insert 200.

[0373] Elastic member for insert legs As shown in FIGS. 2a through 2c, the insert 200 may include insert leg elastic members 210, 211. The insert leg elastic members 210, 211 are disposed on both sides of the insert 200 between the outer longitudinal edges 203, 204 of the insert 200 and the outer longitudinal edges 203, 204 of the absorbent assembly 230, and extend essentially along the longitudinal direction of the insert 200. As shown in FIG. 2a, the insert leg elastic members 210, 211 may be partially bent. For example, if the absorbent assembly has an hourglass shape, the insert leg elastic members may be partially bent to conform to the shape of the absorbent assembly 230. The maximum lateral width of the insert leg elastic members 210, 211 is defined as the leg elastic width iWl. As shown in the figures, the lateral width of the insert leg elastic members 210, 211 is the width measured in the lateral direction including both insert leg elastic members 210, 211 in a pair of insert leg elastic members 210, 211. The lateral width of the insert leg elastic members 210, 211 may vary along the length of the insert leg elastic members 210, 211, as in the illustrated embodiment. The maximum lateral width of the leg elastic members 210, 211 in each of the front iSf or rear iSb portions of the insert is the maximum lateral width that can be found along the length of the insert leg elastic members 210, 211 in the front or rear iSf, iSb, respectively.

[0374] The insert leg elastic members 210, 211 are included in the insert 200 to prevent liquids and feces from leaking beyond the longitudinal edges of the insert and ensure a snug fit around the wearer's legs. The inner leg elastic members 210, 211 thus contribute to the leakproofness of the insert 200 when used to form the absorbent article 1, allowing the entire outer cover 100 to be made of a liquid-permeable material. Each of the insert leg elastic members 210, 211 may be comprised of one or more elastic elements, such as elastic threads, applied in a stretched state between the innermost layer, including the liquid-permeable topsheet 205, and the backsheet. The pair of insert leg elastic members 210, 211 has a longitudinal leg elastic length iLl that may extend along at least 60% of the length of the insert. For example, the leg elastic length may approximately correspond to the length iLc of the absorbent assembly 230. The elastic members 210, 211 may be attached to the backsheet and topsheet 205 by gluing, ultrasonic welding, or the like.

[0375] As shown in FIG. 2a, at each of the front iSf and rear iSb portions of the insert 100, the insert 100 has a maximum width iW, and the leg elastic width iWl, which is the maximum lateral width between the leg elastic members 210, 211, is the maximum width W of the insert. i and greater than the maximum lateral width of the absorbent assembly 230.

[0376] At each of the front iSf and rear iSb portions of the insert 200, leg edges 212, 213 are defined between each insert leg elastic member 210, 211 and the adjacent side edges 203, 204 of the insert 200. The leg edges 212, 213 may have a maximum width along the respective insert leg elastic member 210, 211 of at least 1 cm, such as at least 2 cm. The leg edges 212, 214 provide additional fluid protection and improved wearer comfort.

[0377] Leak-proof barrier inside insert To further prevent leakage of liquids and feces from the side edges of the insert 200, the interior surface of the insert 200 may be provided with a pair of inner leak-proof barriers 260, 261, as shown in Figures 2a and 2b.

[0378] One inner leakproof barrier 260, 261 is disposed on either side of the central longitudinal axis Y, and the inner leakproof barriers 260, 261 extend essentially along the longitudinal direction of the insert 200. The inner leakproof barriers 260, 261 include liftable portions that lift inwardly from the topsheet 205 when the insert is in use, thereby forming a barrier against side leakage. The liftable portions of the inner leakproof barriers 260, 261 extend across at least a portion of the crotch region iSc of the insert 200.

[0379] A maximum lateral barrier width iWg is measured between the attached edges 260b, 261b of the liftable portions of the pair of inner leakproof barriers 260, 261. The maximum lateral barrier width iWg can be smaller than the maximum lateral width iWl of the insert leg elastic members 210, 211 (if present). As in the illustrated variation, the maximum lateral barrier width iWg can be greater than the minimum lateral width of the absorbent assembly 230. In some variations, the maximum lateral barrier width iWg can optionally be greater than the maximum lateral width of the absorbent assembly 230. Each inner leakproof barrier 260, 261 can be formed from a separate strip of material having two essentially parallel longitudinal edges. The strip of material may be double-folded, with the parallel longitudinal edges positioned adjacent to one another. At least one longitudinal edge of each material strip is attached to the innermost layer, including the topsheet 205, and constitutes the attached edge 260b, 261b of the respective inner leakproof barrier 260, 261. As in the illustrated variation, a portion of the material strip may extend inside the insert 200 from the attached edge 260b, 261 to the adjacent longitudinal side edge 203, 204. The folded edge of the material strip constitutes the free edge of the inner leakproof barrier 260, 261. The inner leakproof barriers 260, 261 are folded over the innermost layer, i.e., over the topsheet 205, during manufacture and storage, and have a raised configuration in use, with the free edge raised from the innermost layer, including the topsheet 205, at least in the crotch region iSc of the insert.

[0380] In the illustrated insert 200, the longitudinal leading and trailing ends of the strip of material are attached to the innermost layer, including the topsheet 205, at the leading edge 201 and trailing edge 202 of the insert 200. Thus, the longitudinal leading and trailing ends are not liftable.

[0381] The inner leakproof barriers 260, 261 further comprise elastic elements 260a, 261a attached to the inner leakproof barriers 260, 261 in a pretensioned state. The elastic elements 260a, 261a are advantageously arranged adjacent to the free edges of the inner leakproof barriers 260, 261, for example inside the folds of the material strip as in the illustrated variant. When the pretensioned elastic elements 260a, 261a are released, they contract together with the free edges of the inner leakproof barriers 260, 261, causing the inner leakproof barriers 260, 261 to assume a raised configuration away from the liquid-permeable topsheet 205. For example, the inner leakproof barriers 260, 261 may be in a raised position at least in the crotch region of the insert, which corresponds to at least 60% of the longitudinal length of the insert, the crotch region being spaced apart from both the front end 201 and the rear end 202 of the insert.

[0382] The inner leakproof barriers 260, 261 form liftable portions that allow the inner leakproof barriers 260, 261 to be in a lifted configuration across a majority of the longitudinal length of the insert 200. The inner leakproof barriers 260, 261 may be attached to the topsheet 205 at attached regions adjacent the front and rear ends, respectively, of the insert. In the attached regions, the strips of material forming each inner leakproof barrier 260, 261 are attached to the topsheet via, for example, welding or adhesive, such that the inner leakproof barriers are non-liftable in the attached regions. For example, the inner leakproof barriers 260, 261 may be attached to the inward-facing sides of the insert 200 at the front edge 201′ and / or the rear edge 202′ of the insert.

[0383] Alternatively, the longitudinal ends of the material strip may not be attached to the innermost layer, so that the free edges of the material strip forming the inner leakproof barriers 220, 221 ultimately lift freely from the innermost layer when the insert is bent into use position, without the aid of pre-tensioned elastic elements.

[0384] To securely and comfortably hold the insert 200 in the outer cover 100 and form the absorbent article 1, the insert 200 and the outer cover 100 are removably attachable to each other.

[0385] Insert cover fastening area Here, as shown in FIG. 4, the insert 200 includes a rear set of cover fastener areas 241, 242 at the rear iSb and a front set of cover fastener areas 221, 222 at the front iSf.

[0386] Each cover fastener area 221, 222, 241, 242 includes a surface fastening material for releasably attaching the insert to the outer cover. As described in more detail below, all of the cover fastener areas 221, 222, 241, 242 in the same front or rear set need not include the same surface fastening material. Instead, according to the present disclosure, the cover fastener areas in the same front or rear set include different surface fastening materials, i.e., a first surface fastening material and a second surface fastening material, as described further below.

[0387] In the illustrated variant, the rear set of cover fastening areas of the rear iSb and the front set of cover fastening areas of the front iSf each comprise two laterally spaced apart cover fastening areas 241, 242; 221, 222. However, other variants are possible, such that at least one of the sets of cover fastening areas comprises more than two cover fastening areas, for example four cover fastening areas.

[0388] Regardless of the number of cover fastener areas included in the set, the lateral fastening width iWf may be defined as the width spanned laterally by a set of one or more cover fastener areas.

[0389] In the illustrated variant, each of the cover fastener areas in the front set and each of the cover fastener areas in the rear set are arranged at the same vertical position. Furthermore, each of the cover fastener areas has the same length iAl when viewed in the vertical direction. However, other variants are possible, for example, at least one cover fastener area in the front / rear set is arranged at a different vertical position from other cover fastener areas in the front / rear set. Nevertheless, the set of one or more cover fastener areas spans the vertical length iAl along the vertical axis L. However, it may be preferable that each of the front and rear sets of cover fastener areas be symmetrical with respect to the central vertical axis Y.

[0390] The leading edge 201' is defined as the portion of the insert 200 extending from the leading edge 201 of the insert 200 where the leading set of one or more cover fastener areas 221, 222 extend over the longitudinal length iAl at the leading end iSf, and the trailing edge 202' is defined as the portion of the insert 200 extending from the trailing edge 202 of the insert 200 where the trailing set of one or more cover fastener areas 241, 242 extend over the longitudinal length iAl at the trailing end iSb.

[0391] Each of the leading edge 201' and / or trailing edge 202' may extend over an edge length that is less than 20% of the longitudinal length of the insert, such as less than 10% of the longitudinal length of the insert.

[0392] This may ensure that a large portion of the inward-facing surface of the insert 200 remains available for direct contact with the wearer's genital area, thus limiting the risk of soiling the outer cover 100. As illustrated in the illustrated embodiment, in the longitudinal direction Y, each of the cover fastening areas 221, 222, 241, 242 in a set may be positioned at the leading edge 201 or the trailing edge 202, respectively, i.e., directly adjacent to the leading edge 201 or the trailing edge 202. This is advantageous in manufacturing because, when formed on a continuous line of insert material, one piece of fastening element material can be placed on two subsequent inserts. In this case, a single cutting operation divides the piece of fastening element material into two at the same time that the continuous line of insert material is cut into individual inserts. In this case, the longitudinal length iAl spanned by the set of cover fastening areas corresponds to the longitudinal length of the corresponding edge 201′, 202′ of the insert 200. For example, each set of one or more cover fastening areas 221, 222; 241, 242 may span a longitudinal length iAl that is less than 20% of the longitudinal length of the insert, such as less than 10% of the longitudinal length of the insert.

[0393] In the lateral direction X, each set of cover fastening areas 221, 222; 241, 242 located at the front iSf and rear iSb, respectively, extends across a lateral fastening width iWf. As illustrated in the figures, the lateral fastening width iWf can be equal to or greater than the leg elastic width iWl, and preferably exceeds it.

[0394] This particular positioning ensures that the insert is sufficiently tensioned when the absorbent article 1 is placed on a wearer, ensuring reliable function of the insert leg elastic members 210, 211.

[0395] The insert leg elastic members 210, 211 extend along the longitudinal insert leg elastic length iLl. The leading edge 201' and trailing edge 202' may be advantageously positioned so as not to overlap the longitudinal insert leg elastic length iLl. In other words, each set of one or more cover fastening areas is limited to a leading edge 201' or trailing edge 202' that is not spanned by the leg elastic length iLl.

[0396] The lateral fastening width iWf, as in the illustrated embodiment, may extend over at least a portion of the leg edges 212, 213 of the insert, causing the legs to automatically fold outward when the insert is attached to the outer cover. For example, the lateral fastening width may span at least 50% of the lateral width of each leg, or at least 80% of the lateral width of each leg.

[0397] In the illustrated example, in the rear iSb, the rear set of one or more cover fastener areas includes a first subset 241 of one or more cover fastener areas arranged on a first lateral side of the longitudinal axis Y and a second subset 242 of one or more cover fastener areas arranged on a second lateral side of the longitudinal axis Y. Similarly, in the front iSf, the front set of one or more cover fastener areas includes a first subset 221 of one or more cover fastener areas arranged on a first lateral side of the longitudinal axis Y and a second subset 222 of one or more cover fastener areas arranged on a second lateral side of the longitudinal axis Y.

[0398] In the rear iSb, a first subset of one or more cover fastener areas 241 are spaced apart by a lateral spacing width iWs from a second subset of one or more cover fastener areas 242. Similarly, in the front iSf, a first subset of one or more cover fastener areas 221 are spaced apart by a lateral spacing width iWs from a second subset of one or more cover fastener areas 222. Thus, in the front iSf and rear iSb, the insert 200 is free of cover fastener areas across the spacing width iWs measured between the subsets at the front or rear, respectively.

[0399] This allows the insert to assume the correct shape during use because the insert is not attached to the outer cover across a lateral spacing. Furthermore, accurate assembly of the insert and outer cover can be facilitated by providing cover fastening areas only in locations that are most critical to ensure accurate positioning of the insert within the outer cover.

[0400] The lateral spacing width iWs can be, for example, at least 70% of the lateral fastening width iWf. In the illustrated embodiment, each first or second subset of one or more cover fastener areas includes a single cover fastener area. Thus, the first and second subsets of one or more cover fastener areas in each of the front and rear sets form pairs including two cover fastener areas (one cover fastener area in each subset) spaced apart by the spacing width iWs.

[0401] As shown in the illustrated example, cover fastening areas 221, 222, 241, 242 may be provided on the inward-facing surface of the insert 200, respectively at each corner of the insert 200, for releasably attaching the insert 200 to the outer cover 100. The cover fastening areas 221, 222, 241, 242 are located outside the crotch portion iSc, thereby preventing the attachment to the outer cover 100 from overlapping with the crotch portion oSc, thus reducing the risk of soiling the outer cover. The cover fastening areas 221, 222, 241, 242 may cover less than 5% of the total surface area of ​​the innermost layer, including the topsheet 205. This has been found to be sufficient to securely attach the insert within the outer cover 100, as using more material would result in unnecessary waste. Furthermore, this means that a relatively small portion of the innermost layer of the insert is occupied by the cover fastening areas 221, 222, 241, 242, and therefore a relatively large portion of the innermost layer of the insert may be available to receive body exudates when the absorbent article 1 is in use.

[0402] absorbent articles Figure 5 shows an example of an absorbent article 1 having a reusable outer cover 100 and an insert 200 releasably attached to the outer cover 100. In this example, the reusable outer cover 100 is the outer cover of Figures 1-3, and the insert 200 is the insert of Figure 4.

[0403] The absorbent article 1 has a longitudinal direction X and a transverse direction Y, and a thickness direction Z, which extends inwardly toward the wearer's skin when the article is worn. i and an outward direction Z away from the wearer's skin. o By way of example, and as in the illustrated embodiment, the outer cover 100 and the insert 200 are substantially symmetrical about a central longitudinal axis Y.

[0404] 1a-1b, in the absorbent article 1, the insert 200 is releasably attached to the outer cover 100, such that the insert 200 at least partially covers the inward-facing side of the outer cover 100, which outward-facing side forms the outermost surface of the absorbent article 1. The innermost surface of the outer cover 100 thus faces the outermost surface of the insert 200, such that, with respect to these opposing surfaces, in use, the outward-facing surface of the outer cover 100 is intended to face away from the wearer, and the inward-facing surface of the insert 200 contacts the wearer's skin. In the illustrated absorbent article 1, significant portions of both the innermost surface of the outer cover 100 and the innermost surface of the insert 200 are visible, which together form the innermost surface of the absorbent article that contacts the wearer's skin in use.

[0405] It will be appreciated that in the absorbent article 1, the insert 200 is releasably attached to the outer cover 100 by the cover fastening areas 221, 222; 241, 242 of the insert 200 being releasably attached to the insert fastening areas 121, 122; 141, 142 of the outer cover 100.

[0406] Preferably, the outer cover 100 and insert 200 are sized so that when the insert 200 is releasably attached to the outer cover 100, the front and back flap members 120, 140 do not overlap the absorbent assembly 230.

[0407] For example, each flap member 120, 140 may have a longitudinal flap length set so that when the insert 200 is attached to the outer cover 100 in the use position, the flap member 120, 140 extends over less than 20% of the longitudinal length of the insert, preferably less than 10% of the longitudinal length of the insert.

[0408] For example, the total area of ​​the front and back flap members 120, 140 may cover less than 80%, preferably less than 85%, of the total area of ​​the insert. The front and back flap members 120, 140 may be sized to cover less than 15%, preferably less than 10%, of the total area of ​​the insert when in use.

[0409] Additionally, the absorbent insert of the absorbent article may include any of the features described above in connection with the description of absorbent insert 200, and it is understood that the present disclosure encompasses all such absorbent articles.

[0410] For example, the absorbent insert can include a backsheet that is liquid impermeable.

[0411] For example, the absorbent insert may be disposable.

[0412] Absorbent product usage cycle Figures 6A, 6B, 6C and 6D show the use cycle of an absorbent article 1 similar to the article shown in Figure 5, each showing a package 300 containing at least an insert 200, the attachment of the insert 200 to the outer cover 100, the absorbent article being worn by a wearer, and the removal and disposal of the insert 200 and cleaning of the outer cover 100.

[0413] The package of Figure 6A may be available containing a predetermined amount of insert and / or one or more outer covers. In Figure 6B, the insert 200 is first shown releasably attached to the inside of the corresponding flap member of the outer cover 100. Attachment occurs as described above. The absorbent article is then placed on the wearer, as shown in Figure 6C. In a particular embodiment of the outer cover 100, the side portions 110, 111 are located at the rear end of the article and are attached to the front end of the article on the surfaces that face outward of the outer cover 100 when the article is placed on the wearer. Preferably, the outer cover 100 includes complementary attachment means 117, 118 at the front end on the surface facing away from the wearer, as shown (see Figure 2). The complementary attachment means 117, 118 are adapted to receive the attachment means 115, 116 (see Figures 1a-1b) provided on the first side portion 110 and the second side portion 111, ensuring a good detachable attachment without potentially damaging the main material forming the outward facing surface of the outer cover 100.

[0414] After use, the entire absorbent article 1 is removed from the wearer by cutting away the first and second side portions, after which the insert can be separated from the outer cover as shown in Figure 6D.

[0415] For example, and as in this embodiment, the insert 200 is a disposable insert, and therefore the insert 100 can be discarded after use.

[0416] The outer cover 100 is preferably washable so that it can be washed if necessary, as shown in the figures.

[0417] In the next cycle of use, the same outer cover 100 is used with a new, different insert 200 .

[0418] It will be understood that for many variations of absorbent articles, the use cycle described above may be the same, regardless of the particular configuration of the outer cover and insert. Furthermore, for variations of absorbent articles according to the present description in which the insert is reusable, it will be understood that the use cycle will be substantially the same, except that the insert is not discarded but is laundered before being reused in the next use cycle.

[0419] The present invention has been described with reference to several illustrative embodiments as shown in the Figures. Obvious modifications and alternative implementations of several components or elements will be apparent to those skilled in the art upon reading and understanding the above detailed description. In particular, it will be apparent to those skilled in the art that various explicitly described alternatives in the detailed description may be implemented independently of other explicitly described alternatives not explicitly described as related thereto. The present invention is intended to include all such modifications and alternative implementations within the scope of the appended claims.

[0420] Fabric stretchability test method - Fabric stretch rate The following procedure for measuring fabric extensibility is used.

[0421] A representative article is taken from its unopened packaging and laid completely flat (but not stretched) over the fabric area to be investigated. Samples are then cut from the direction of interest, preferably using a sharp punching tool. The sample must be representative of the fabric area to be investigated, so obvious irregular features (such as seams or fastening elements) should be avoided. A typical sample is 30 mm wide and over 40 mm long (some extra material is needed in the length direction for attachment to the clamps, as explained further below).

[0422] Before testing, the samples are conditioned for at least 24 hours at 23°C and 50% relative humidity, and subsequent testing is carried out under the same conditions.

[0423] Measurements are carried out using a tensile tester. Suitable instruments are available, for example, from Instron, Lloyd, or Zwick. The tester is equipped with a lower fixed clamp, which is vertically aligned with an upper clamp that can be raised at a constant rate (300 mm / min in this example). The width of the clamp must be equal to or greater than the width of the test sample.

[0424] The clamps are spaced 40 mm apart (the sample gauge length). To prevent slippage within the clamps, for example, high-friction backed tape is applied adjacent to the 40 mm section being tested (over the entire sample area that will be attached to the clamps). Tape can also be used to extend the length of the sample and make it easier to insert into the clamps.

[0425] The tensile tester is zeroed. The sample is placed in the clamps, vertically aligned and wrinkle-free, so that the force indicator shows a slight pretension of approximately 0.03 N (i.e., 0.01 N per cm of sample width) at the start of the test.

[0426] The test is started and the elongation of the sample is measured when a force of 3 N is applied to the standard sample. The elongation is calculated as follows: (Sample length at 3N - initial sample length) / initial sample length x 100

[0427] The results are expressed as the percent elongation at a force of 1 N per cm of sample width, which is defined herein as the "fabric elongation."

[0428] For example, if a force of 3 N is measured when a standard test section (40 mm long, 30 mm wide) is stretched 20 mm (when the distance between the clamps is 60 mm), the elongation at a force of 1 N per cm of sample width is determined to be 50%. Therefore, the fabric elongation is 50%.

[0429] If the area of ​​interest in the fabric is small and it is not possible to cut out a sample of standard dimensions, it is necessary to obtain the largest possible sample. In this case, the length-to-width ratio of the test section (1.33) must be maintained and the measuring force adjusted accordingly (e.g., a test section 27 mm long should have a width of 20 mm and the elongation should be measured at 2 N). [Explanation of symbols]

[0430] 110 First side 111 Second side 120 Flap member 140 Flap member 150 Main Components 151 Edge Segment 152 edge segments 161 first elastic edge element 162 second elastic edge element 163 Elastic Edge 181 First Junction 182 Second Junction 183 Lateral joint 191 First lateral segment 192 Second lateral segment 205 Liquid-permeable topsheet 206 Liquid-impermeable backsheet 210 Insert leg elastic member 211 Insert leg elastic member 212 Leg edge 213 Leg edge 214 Leg edge 231 First Layer 232 Second Layer 233 Liquid receiving layer 260 Prevention Barrier 260a Elastic element 261 Prevention Barrier 261a Elastic Elements 300 packaging

Claims

1. A reusable outer cover (100) for forming an absorbent article (1), wherein an absorbent insert is adapted to be releasably attached to said outer cover; The outer cover (100) has a front portion (Sf) facing the front of the wearer, a rear portion (Sb) facing the back of the wearer, and a crotch portion (Sc) extending between the front portion (Sf) and the rear portion (Sb), the outer cover (100) extends along a longitudinal central axis (Y) and a lateral central axis (X) perpendicular to the longitudinal axis (Y), the lateral central axis (X) dividing the outer cover (100) into a front half and a rear half, a thickness axis (Z) defined perpendicular to both the longitudinal and lateral axes (X, Y), an inward direction (Zi) defined as the direction along the thickness axis (Z) that points towards the wearer when the outer cover (100) is worn, and an outward direction (Zo) defined as the direction along the thickness axis (Z) that points away from the wearer when the outer cover (100) is worn; The outer cover (100) includes a chassis portion (150) extending along the longitudinal axis (y) from a front chassis edge (101c) that forms part of a front edge (101) of the outer cover to a rear chassis edge (102c) that forms part of a rear edge (102) of the outer cover; the chassis portion (150) includes a first chassis side edge (103c) and a second chassis side edge (104c) that extend between the chassis leading edge (101c) and the chassis trailing edge (102c) of the chassis portion (150) on opposite sides of the longitudinal axis (Y); In at least one of the rear half (Sb) and the front half (Sf) of the outer cover, preferably at least in the rear half (Sb) of the outer cover, The outer cover is and first and second side portions (110, 111) extending laterally on opposite sides of the chassis portion (150) with respect to the longitudinal axis (Y), each of the side portions (110, 111) of the outer cover including one or more waist attachment elements (115, 116) for attaching the outer cover around the waist of a wearer in use; the first side portion (110) is permanently attached to the chassis portion (150) along a first side mounting segment (191) of the first chassis side edge (103c), and the second side portion (111) is permanently attached to the chassis portion (150) along a second side mounting segment (192) of the second chassis side edge (104c), the first and second side mounting segments (191, 192) defining a side length (SL) from the longitudinal end of each segment closest to the central lateral axis (X) to the adjacent trailing edge (102) or leading edge (101) of the outer cover; The chassis portion (150) includes a main member (150m) and a flap member (140); the main member (150m) forms the front or rear chassis edge (101c, 102c), the first chassis side edge (103c), and the second chassis side edge (104c) in the front or rear half; the flap member (140) is positioned with an outward facing side of the flap member (140) facing an inward facing side of the main member (150m), thereby forming a pocket between the outward facing side of the flap member (140) and the inward facing side of the main member (150m); the flap member (140) is permanently attached to the main member (150m) along the first flap attachment segment (193) at the first chassis side edge (103c) and the second flap attachment segment (194) at the second chassis side edge (104c), the first and second flap attachment segments (193, 194) defining a waist region length (WL) from the longitudinal end of each segment closest to the central lateral axis (X) to the adjacent trailing edge (102) or leading edge (101) of the outer cover; the side length (SL) extends a longitudinal distance (D) in the direction of the lateral axis (X) beyond the waist region length (WL); Outer cover (100).

2. 2. The outer cover of claim 1, wherein the first and second side attachment segments (191, 192) and / or the first and second flap attachment segments (193, 194) extend essentially parallel to the longitudinal axis (Y).

3. a first joint assembly (181) including one or more joints connecting the first side portion (110) and the chassis portion (150) along the first side attachment segment (191) and connecting the flap member (140) to the main member (150m) along the first flap attachment segment (193); and 3. The outer cover of claim 1, further comprising a second joint assembly (182) including one or more joints connecting the second side portion (111) and the chassis portion (150) along the second side attachment segment (192) and connecting the flap member (140) to the main member (150m) along the second flap attachment segment (194).

4. a first joint (181) connecting the first side portion (110) and the chassis portion (150) along the first side attachment segment (191) and connecting the flap member (140) and the main member (150m) along the first flap attachment segment (193); and 4. The outer cover of claim 1, further comprising a second joint (182) connecting the second side portion (111) and the chassis portion (150) along the second side attachment segment (192) and connecting the flap member (140) and the main member (150m) along the second flap attachment segment (194).

5. 5. The outer cover of claim 3 or 4, wherein each of the one or more joints, such as each of the first and second joints (181, 182), is a sewn seam, a welded seam, a glued seam, an adhesive tape, or a combination thereof.

6. The outer cover according to any one of claims 3 to 5, wherein said one or more joints (181, 182) extend essentially parallel to said longitudinal axis (Y).

7. 7. The outer cover of claim 1, wherein the longitudinal distance (D) is greater than or equal to 0.50 times the waist region length (WL), such as greater than or equal to 0.75 times the waist region length (WL) or greater than or equal to 0.90 times the waist region length (WL).

8. The outer cover according to any one of the preceding claims, wherein the longitudinal distance (D) is at least 5 cm, such as at least 10 cm, or in the range of 5 cm to 20 cm, or in the range of 10 cm to 20 cm.

9. The outer cover according to any one of claims 1 to 8, wherein the side length (SL) is 20% to 30% of the central outer cover length (L) of the outer cover, preferably 22% to 27%, and most preferably about 25% of the central outer cover length (L) of the outer cover.

10. The outer cover according to any one of claims 1 to 9, wherein the waist region length (WL) is less than 15% of the central outer cover length (L) of the outer cover, preferably less than 10% of the central outer cover length (L) of the outer cover.

11. 11. The outer cover of claim 1, wherein a waist region (WR) of the chassis portion is defined laterally between the first and second flap attachment segments (193, 194), the waist region having the waist region length (WL), and the waist region of the chassis portion (150) includes one or more insert fastening areas (141, 142) for releasably fastening an insert to the outer cover, preferably the insert fastening areas (141, 142) are laterally spaced apart and include at least two insert fastening areas (141, 142) located on each lateral side of the central longitudinal axis (Y).

12. 12. The outer cover according to claim 1, wherein at least one of the outward-facing side of the flap member (140) forming the pocket and the inward-facing side of the main member (150) includes one or more insert fastening areas (141, 142) for detachably fastening an insert to the outer cover, preferably at least two insert fastening areas (141, 142) spaced apart laterally and located on each lateral side of the central longitudinal axis (Y).

13. the chassis portion (150) of the outer cover further comprises a first elastic edge element (161) and a second elastic edge element (162); The first elastic edge element (161) is attached along at least a portion of the first chassis side edge (103c), and the first elastic edge element (161) - said first elastic edge element (161) is adapted to gather and gather a first gathered edge segment (151) of said first chassis side edge (103c) when in a relaxed state, said first gathered edge segment (151) being gathered and extending in a gathered state; - said first elastic edge element (161) is adapted to stretch said first gathered edge segment (151) of said first chassis side edge (103c) when in a stretched state, said first gathered edge segment (151) being flat and extending without gathered; The second elastic edge element (162) is attached along at least a portion of the second chassis side edge (104c), and the second elastic edge element (162) - said second elastic edge element (162) is adapted to gather and gather the second gathered edge segment (152) of said second chassis side edge (104c) when in a relaxed state, said second gathered edge segment (152) being gathered and extending in a gathered state; the second elastic element (162) is adapted to stretch the second gathered edge segment (152) of the second chassis side edge (104c) when in a stretched state, the second gathered edge segment (152) being flat and extending without gathered; The outer cover according to any one of claims 1 to 12.

14. the first gathered edge segment (151) and the first side attachment segment (191) are spaced apart by a second longitudinal distance, and the second gathered edge segment (152) and the second side attachment segment (192) are spaced apart by a second longitudinal distance; 14. The outer cover of claim 13, wherein the second longitudinal distance is 3 cm or less, preferably 2 cm or less.

15. 15. The outer cover of claim 13 or 14, wherein the first gathered edge segment (151) continues directly from the first side attachment segment (191) and the second gathered edge segment (152) continues directly from the second side attachment segment (192).

16. An outer cover according to any one of claims 13 to 15 when combined with claim 3 or 4, wherein, when viewed in the thickness direction (Z), the first joint assembly or first joint portion (181) overlaps with the first elastic edge element (161), and the second joint assembly (182) or second joint portion (182) overlaps with the second elastic edge element (162).

17. 17. The outer cover (100) of any one of claims 1 to 16, wherein the primary member (150m) has a first lateral fabric stretch rate in a region extending laterally between the first side attachment segment (191) and the second side attachment segment (192) and extending longitudinally along the side length (SL), and the flap member (140) and the primary member (150m) have a second lateral fabric stretch rate in a waist region (WR) extending laterally between the first flap attachment segment (193) and the second flap attachment segment (104) and extending longitudinally along the waist region length (WL), and the second lateral fabric stretch rate is lower than the first lateral fabric stretch rate.

18. A reusable outer cover (100) for forming an absorbent article (1), wherein an absorbent insert is adapted to be releasably attached to said outer cover; The outer cover (100) has a front portion (Sf) facing the front of the wearer, a rear portion (Sb) facing the back of the wearer, and a crotch portion (Sc) extending between the front portion (Sf) and the rear portion (Sb), the outer cover (100) extends along a longitudinal central axis (Y) and a transverse central axis (X) perpendicular to the longitudinal axis (Y), the transverse central axis (X) dividing the outer cover (100) into a front half and a rear half, and a thickness axis (Z) defined perpendicular to both the longitudinal and transverse axes (X, Y); The outer cover (100) includes a chassis portion (150) extending along the longitudinal axis (y) from a front chassis edge (101c) at a front edge (101) of the outer cover to a rear chassis edge (102c) at a rear edge (102) of the outer cover; the chassis portion (150) includes first and second chassis side edges (103c) and (104c) extending between the chassis leading and trailing edges (101c, 102c) of the chassis portion (150) on opposite sides of the longitudinal axis (Y); In at least one of the rear half (Sb) and the front half (Sf) of the outer cover, the outer cover has the outer cover includes first and second side portions (110, 111) extending laterally on opposite sides of the chassis portion (150) with respect to the longitudinal axis (Y) and for fastening the outer cover around the waist of a wearer, each of the side portions (110, 111) of the outer cover including one or more waist attachment elements (115, 116) for attaching the outer cover around the waist of a wearer; the first side portion (110) is permanently attached to the chassis portion (150) along a first side mounting segment (191) of the first chassis side edge (103c), and the second side portion (111) is permanently attached to the chassis portion (150) along a second side mounting segment (192) of the second chassis side edge (104c), the first and second side mounting segments (191, 192) defining a side length (SL) from the longitudinal end of each segment closest to the central lateral axis (X) to the adjacent trailing edge (102) or leading edge (101) of the outer cover; the chassis portion (150) extends laterally between the first and second side mounting segments (191, 192); and a waist region extending longitudinally from the leading or trailing edge (101, 192) of the outer cover toward the central longitudinal axis (X) along a waist region length (WL); the chassis portion (150) includes an intermediate region (IR) extending laterally between the first and second side attachment segments (191, 192) and longitudinally along a first distance (D) from the waist region toward the central longitudinal axis (X); The reusable outer cover (100) has a first lateral fabric stretch rate in the intermediate region (IR) and a second lateral fabric stretch rate in the waist region (WR), the second lateral fabric stretch rate being lower than the first lateral fabric stretch rate.

19. The outer cover according to any one of claims 18 to 20, wherein the waist region (WR) of the chassis portion (150) includes one or more insert fastening areas (141, 142) for releasably fastening an insert to the outer cover, and preferably the insert fastening areas (141, 142) include at least two insert fastening areas (141, 142) spaced apart laterally and located on each lateral side of the central longitudinal axis (Y).

20. 20. The outer cover of any one of claims 17 to 19, wherein the longitudinal distance (D) is greater than or equal to 0.50 times the waist region length (WL), such as greater than or equal to 0.75 times the waist region length (WL) or greater than or equal to 0.90 times the waist region length (WL).

21. The outer cover according to any one of claims 17 to 20, wherein the longitudinal distance (D) is at least 5 cm, such as at least 10 cm, or from 5 cm to 20 cm, or from 10 cm to 20 cm.

22. The outer cover according to any one of claims 17 to 21, wherein the side length (SL) is 20% to 30%, preferably 22% to 27%, and most preferably about 25% of the central outer cover length (L) of the outer cover.

23. The outer cover according to any one of claims 17 to 22, wherein the waist region length (WL) is less than 15% of the central outer cover length (L) of the outer cover, preferably less than 10% of the central outer cover length of the outer cover.

24. the chassis portion (150) of the outer cover further comprises a first elastic edge element (161) and a second elastic edge element (162); The first elastic edge element (161) is attached along at least a portion of the first chassis side edge (103c), and the first elastic edge element (161) - said first elastic edge element (161) is adapted to gather and gather a first gathered edge segment (151) of said first chassis side edge (103c) when in a relaxed state, said first gathered edge segment (151) being gathered and extending in a gathered state; - said first elastic element (161) is adapted to stretch said first gathered edge segment (151) of said first chassis side edge (103c) when in a stretched state, said first gathered edge segment (151) being flat and extending without gathered; and The second elastic edge element (162) is attached along at least a portion of the second chassis side edge (104c), and the second elastic edge element (162) - said second elastic edge element (162) is adapted to gather and gather the second gathered edge segment (152) of said second chassis side edge (104c) when in a relaxed state, said second gathered edge segment (152) being gathered and extending in a gathered state; An outer cover according to any one of claims 18 to 23, wherein the second elastic element (162) is adapted to stretch the second gathered edge segment (152) of the second chassis side edge (104c) when in a stretched state, the second gathered edge segment (152) being flat and extending without gathered edges.

25. 25. The outer cover of claim 24, wherein the first gathered edge segment (151) and the first side attachment segment (191) are spaced apart by a second longitudinal distance, and the second gathered edge segment (152) and the second side attachment segment (192) are spaced apart by a second longitudinal distance, the second longitudinal distance being equal to or less than 3 cm, preferably equal to or less than 2 cm.

26. 26. An outer cover according to claim 24 or 25, wherein the first gathered edge segment (151) continues directly from the first side attachment segment (191) and the second gathered edge segment (152) continues directly from the second side attachment segment (192).

27. the chassis portion (150) includes a main member (150m) and a flap member (140); said main member (150m) forming said front or rear chassis edge (101c, 102c), said first chassis side edge (103c), and said second chassis side edge (104c) in said front or rear half; the flap member (140) is positioned with an outward facing side of the flap member (140) facing an inward facing side of the main member (150m), thereby forming a pocket between the outward facing side of the flap member (140) and the inward facing side of the main member (150m); the flap member (140) is permanently attached to the main member (150m) along a first flap attachment segment (193) at the first chassis side edge (103c) and along a second flap attachment segment (194) at the second chassis side edge (104c), the first and second flap attachment segments (193, 194) defining the waist region length (WL) from the longitudinal end of each segment closest to the central lateral axis (X) to the adjacent rear edge (102) or front edge (101) of the front half of the outer cover; 27. The reusable outer cover of any one of claims 18 to 26, wherein the side length (SL) extends beyond the waist region length (WL) by the longitudinal distance (D) in the direction of the lateral axis (X).

28. An outer cover according to claim 27 when combined with any one of the features of claims 2 to 16.

29. 29. The reusable outer cover of any one of claims 17 to 28, wherein the second lateral fabric stretch rate is 30% to 70% of the first lateral fabric stretch rate, for example 40% to 60% of the first lateral fabric stretch rate, resulting in 45% to 55% of the first lateral fabric stretch rate.

30. 30. The reusable outer cover according to any one of claims 17 to 29, wherein each of the first and second side portions (110, 111) forms a side region (SR1, SR2), each side region (SR1, SR2) having a side portion lateral fabric stretch rate, the side portion lateral fabric stretch rate being lower than the first lateral fabric stretch rate.

31. 31. A reusable outer cover according to any one of claims 17 to 30, wherein the side lateral fabric stretch rate is 30% to 70% of the first lateral fabric stretch rate, for example 40% to 60% of the first lateral fabric stretch rate, and consequently 45% to 55% of the first lateral fabric stretch rate.

32. An absorbent assembly comprising an outer cover according to any one of claims 1 to 31 and an absorbent insert releasably attached to the outer cover.

33. 33. The absorbent assembly of claim 32, wherein the absorbent insert comprises a backsheet that is liquid impermeable.

34. 34. The absorbent assembly of claim 32 or 33, wherein the absorbent insert is disposable.

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