Disposable pant-type absorbent article

Abstract

The utility model discloses a disposable pants type absorption product, which is provided with a front area, a rear area and a crotch area, and comprises a front piece positioned in the front area, a rear piece positioned in the rear area and an absorption component positioned between the front piece and the rear piece, wherein the front piece of the front area comprises an innermost layer of non-woven fabric; a first inner layer non-woven fabric; an outer layer non-woven fabric; a first elastic region designed to extend from the front outer edge to the transverse fold line T by a length of 5 mm or more; a second elastic region designed to extend from the first elastic region to a transverse fold line T by a length of 50 mm or more; and the drawing force of the first elastic area in the front area is higher than that of the second elastic area. Thus, it is ensured that the absorbent product has excellent fitness, especially advantageously, a distinctive fine and smooth pleated appearance and a soft hand feeling can be achieved, and the competitiveness of the product can be improved.

Description

Technical Field

[0001] The utility model relates to a disposable absorbent product, and more particularly to a disposable pants-type absorbent product which is constructed with an improved bubble waist design. Background Art

[0002] Pants are commonly used disposable hygiene products for infants and young children. They can also be called "growing pants," "pull-on pants," or "pull-on diapers." They not only absorb urine and prevent leaks, but are also easy to wear and convenient for movement. This makes it easier for babies to learn to walk and reduces fatigue for caregivers like mothers. These absorbent products, which fit like small, comfortable briefs and allow for more natural movement, are ideal for learning to walk.

[0003] To achieve a good fit, many disposable pant-type absorbent articles utilize elastic elements that are secured in an elastically contractible state within the waist opening and / or leg openings. Typically, to ensure a fully elastic fit around the legs and waist, such as to provide a durable undergarment, the leg and waist openings are at least partially surrounded by elasticized bands of rubber or other materials positioned along the perimeter of the respective openings. In existing products currently on the market, elastic materials such as stretch yarn, elastic film, elastic fabric, and composite elastomers are typically used as elastic elements in the elastic waist design of pant-type absorbent articles.

[0004] The design of elastic waistbands for pant-type absorbent products is fraught with challenges. Ideally, the elastic waistband of a pant-type absorbent product would deliver as little pressure as possible to the skin of an infant or wearer to provide improved skin conditions and skin markings, but at the same time, it would need to provide sufficient force to provide a lasting fit. Specifically, whether in consumer complaints / negative reviews on e-commerce platforms or in actual wear tests by consumers, the marks and redness left by pant-type absorbent products during actual use by babies are cited as the main factor for negative reviews. This has been a long-standing pain point in the research and development of elastic waistbands for pant-type absorbent products. At the same time, if the pressure exerted on the wearer's skin by the overall waistband is reduced simply by lowering the stretch ratio of the elastic elements within the elastic waistband, the elastic waistband designed in this way will in turn have insufficient fit and the diaper may easily fall down after the baby urinates due to the crotch absorbing a large amount of urine or during the baby's exercise.

[0005] To this end, it is known to incorporate a bubble waist structure at the waist of pant-type absorbent products to reduce waistline constriction. The following bubble waist structure has been proposed for disposable absorbent sanitary products: it comprises an outer non-woven fabric A1, an inner non-woven fabric A2, a bubble waist non-woven fabric A3, and an elastic fabric A4. The elastic fabric A4 is bonded between the outer non-woven fabric A1 and the inner non-woven fabric A2 via an adhesive A5, and the ends of the bubble waist non-woven fabric are bonded to the outer sides of the outer non-woven fabric A1 and the inner non-woven fabric A2, respectively. While this bubble waist structure reduces waistline constriction, the product is thick, requires more material, is less soft, comfortable, and breathable, and increases cost. Furthermore, the elastic fabric covers the vulnerable navel area, which is still uncomfortable.

[0006] As an improvement, the utility model patent CN220025410U authorized and published in China discloses a bubble waistband for disposable absorbent sanitary products, wherein:

[0007] (1) The outer folded and wrapped bubble waist non-woven fabric is eliminated. The inner non-woven fabric is narrowed, and the shortened section of the inner non-woven fabric is compounded with an elastic member. The elastic member is used to replace a section of the inner non-woven fabric. At the same time, the outer non-woven fabric is folded and wrapped with the elastic member and then compounded with the inner non-woven fabric. While ensuring that the tightness at the waist is reduced, the thickness of the bubble waist is reduced, ensuring the softness, comfort and breathability of the product. The navel position is not covered with an elastic member, ensuring the comfort of the navel position.

[0008] (2) The elastic parts are made of fine-denier rubber, which can ensure the product is soft, stress is dispersed, and fits the body perfectly, while further reducing the occurrence of strangulation marks;

[0009] (3) The bubble waist non-woven fabric with the outer folding coating is eliminated, which can reduce materials, increase production speed and save costs. However, such a bubble waist is still unsatisfactory in terms of fit and appearance.

[0010] Therefore, in this field, there is still a need for further optimization design of the elastic waist of pants-type absorbent products. It is expected that the optimized elastic waist of pants-type absorbent products can meet at least one of the following performances: improved fit and wearer comfort, unique delicate pleated appearance and soft feel, and considerable design layering. Utility Model Content

[0011] Therefore, the object of the present invention is to provide a disposable pant-type absorbent article, by which the above-mentioned disadvantages of the prior art are at least partially overcome.

[0012] In order to accomplish the above-mentioned task, the utility model provides a disposable pant-type absorbent product, wherein the absorbent product has a front region, a back region and a crotch region arranged between the front region and the back region, wherein the absorbent product is defined by a longitudinal center line and a transverse folding line for converting the disposable pant-type absorbent product into a wearing configuration, and comprises: a front piece located in the front region and a back piece located in the back region, and an absorbent assembly located in the crotch region and extending into the front piece and the back piece; wherein the front piece and the back piece each have a front outer edge and a back outer edge, a first side edge and a second side edge respectively located on both sides of the longitudinal center line, and each of the front piece and the back piece The garment further comprises a front outer cover layer and a back outer cover layer facing the garment surface, wherein the front panel in the front region can be bonded to the back panel in the back region to form a pair of side seams, thereby defining a waist opening and a pair of leg openings; wherein the absorbent assembly comprises a top sheet layer facing the body and a bottom sheet layer facing the garment, and an absorbent core positioned between the top sheet layer and the bottom sheet layer; and an innermost nonwoven fabric layer below the bottom sheet layer, wherein the innermost nonwoven fabric layer has a length extending into the front panel and the back panel respectively along a longitudinal centerline; wherein the front panel in the front region comprises: a first inner nonwoven fabric extending below the innermost nonwoven fabric in the front region, which is designed to extend from the innermost nonwoven fabric layer to the back panel layer. The outer nonwoven fabric extending from the bottom to the front outer edge of the front area is folded back for a certain length to define an inner space; the outer nonwoven fabric extending from the bottom to the front outer edge of the front area is folded back for a certain length and fixedly connected to the absorbent assembly, wherein the outer nonwoven fabric is fixedly bonded to the first inner nonwoven fabric on opposite sides of the folding area to define a bubble cavity with movable ends for accommodating the inner space; the first elastic zone located in the inner space is designed to extend from the front outer edge toward the transverse folding line for a length of more than 5 mm, wherein in the first elastic zone on the side facing the clothes 1 to 20 first elastic strands with a strand fineness of 200 to 1000 deniers and a stretch ratio of 150% or more are sandwiched between the first inner non-woven fabric and the first inner non-woven fabric on the body-facing side, wherein the spacing between these first elastic strands is more than 2 mm; the second elastic zone is designed to extend toward the transverse fold line for a length of more than 25 mm immediately following the first elastic zone, wherein in the second elastic zone, 20 to 800 second elastic strands with a strand fineness of 40 to 300 deniers and a stretch ratio of 150% or more are sandwiched between the first inner non-woven fabric and the outer non-woven fabric, wherein the spacing between these second elastic strands is more than 0.5 mm.

[0013] Therefore, the present invention utilizes an innovative and rational combination design using elastic strands of varying performance to fundamentally reduce the occurrence of red marks and strangulation marks on the waist after wearing. The innovative combination of different elastic strands and the range of stretch ratios proposed in the present invention, combined with the combined design of the non-woven fabric, achieves an invisible effect for the sandwiched elastic strands, essentially making them invisible to the consumer without paying close attention. This ensures the absorbent product has an excellent fit and, more importantly, achieves a distinctive, delicately wrinkled appearance and a soft feel. These product performances are highly beneficial for enhancing product competitiveness.

[0014] As a preferred aspect, the back panel of the back area includes: a second inner layer of nonwoven fabric extending below the innermost nonwoven fabric in the back area, which is designed to extend from below the innermost nonwoven fabric to the rear outer edge of the back area and then be folded back a certain length to define another inner layer space; an outer layer of nonwoven fabric extending below the second inner layer of nonwoven fabric in the back area, which is designed to extend from a transverse folding line to the rear outer edge of the back area and then be folded back a certain length and fixedly connected to the absorbent assembly, wherein the outer layer of nonwoven fabric is fixedly bonded to the second inner layer of nonwoven fabric on opposite sides of its folding area to define a bubble cavity with movable ends, which accommodates another inner layer space; a third elastic area located in the other inner layer space, which is designed to extend from the rear outer edge toward the transverse folding line The invention relates to a fabric comprising: a first elastic region, a second elastic region, and a second elastic region. The first elastic region comprises a first elastic region and a second elastic region. The first elastic region comprises a second elastic region and a second elastic region. The first elastic region comprises a second elastic region and a second elastic region. The first elastic region comprises a second elastic region and a second elastic region. The first elastic region comprises a second elastic region and a second elastic region. The first elastic region comprises a second elastic region and a second elastic region. The first elastic region comprises a second elastic region and a second elastic region. The first elastic region comprises a second elastic region and a second elastic region. The first elastic region comprises a second elastic region and a second elastic region. The first elastic region comprises a second elastic region and a second elastic region. The first elastic region comprises a second elastic region and a second elastic region. The first elastic region comprises a second elastic region and a second elastic region.

[0015] As a preferred aspect, the outer layer non-woven fabric is bonded to the first inner layer non-woven fabric via a first bonding part and a second bonding part on opposite sides of its folding area, wherein a first outer layer space is defined between the first bonding part and the movable end portion and a second outer layer space is defined between the second bonding part and the movable end portion, wherein the first outer layer space and the second outer layer space are hollow and continuous.

[0016] As a preferred aspect, the length of the first outer space and / or the second outer space along the longitudinal center line is 5 to 50 mm.

[0017] As a preferred aspect, the first inner layer non-woven fabric and the second inner layer non-woven fabric can be selected from hot air non-woven fabric, spunbond non-woven fabric, spunbond meltblown non-woven fabric or at least one of hot air / spunbond / spunbond meltblown non-woven fabric with pattern printing, wherein the fineness of the material fiber of the first inner layer non-woven fabric and the second inner layer non-woven fabric is 0.6 denier to 3.0 denier and the gram weight range of the non-woven fabric is 8 g / m2 to 32 g / m2.

[0018] As a preferred aspect, the outer layer non-woven fabric can be selected from hot air non-woven fabric, spunbond non-woven fabric, spunbond meltblown non-woven fabric or at least one of hot air / spunbond / spunbond meltblown non-woven fabrics with pattern printing, wherein the diameter of the material fiber of the outer layer non-woven fabric is 5 to 30 microns and its gram weight range is 10 grams / square meter to 35 grams / square meter.

[0019] As a preferred aspect, the stretching ratio of the first elastic strands is 150% to 300%, and the spacing between these first elastic strands is 2 to 15 mm, or the stretching ratio of the second elastic strands is 150% to 350%, and the spacing between these second elastic strands is 0.5 to 2.5 mm.

[0020] As a preferred aspect, the stretching ratio of the third elastic strands is 150% to 300%, and the spacing between these third elastic strands is 2 to 15 mm, or the stretching ratio of the fourth elastic strands is 150% to 350%, and the spacing between these fourth elastic strands is 0.5 to 2.5 mm.

[0021] As a preferred aspect, the invention further comprises a plurality of fifth elastic strands extending along the transverse direction for forming leg cuffs or leg opening barriers, wherein the fifth elastic strands are sandwiched between the first inner layer of nonwoven fabric and the outer layer of nonwoven fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a front view of an embodiment of a disposable pant-type absorbent article according to the present invention, wherein the disposable pant-type absorbent article is in a closed state and its garment-facing side is shown;

[0023] Figure 2 is a rear view of an embodiment of a disposable pant-type absorbent article according to the present invention, wherein the disposable pant-type absorbent article is in a closed state and its garment-facing side is shown;

[0024] Figure 3 is a side view of an embodiment of a disposable pant-type absorbent article according to the present invention, wherein the disposable pant-type absorbent article is in a closed state and shows its garment-facing side;

[0025] Figure 4is a top plan view of an embodiment of a disposable pant-type absorbent article according to the present invention, wherein the disposable pant-type absorbent article is in an open state and longitudinally and laterally stretched and laid flat configuration, and shows its body-facing side;

[0026] Figure 5 is based on Figure 1 A partial view of an embodiment of the invention;

[0027] Figure 6 1 is a cross-sectional view of an embodiment of a disposable pant-type absorbent article according to the present invention, in which the distribution of elastic regions along the longitudinal direction of the pant-type absorbent article is schematically shown.

[0028] Repeated use of reference numerals in this specification and the drawings is intended to represent the same or similar elements of the present invention.

[0029] Description of Reference Numerals

[0030] 10-pants absorbent product; 100-front area; 200-back area; 300-crotch area; 400-absorbent component

[0031] 101 - first elastic zone; 102 - second elastic zone; 103 - front outer edge; 105 - front outer cover layer

[0032] 106A-first elastic strand; 106B-second elastic strand; 110-first side edge;

[0033] 111 - first side seam; 112 - second side seam; 120 - leg opening;

[0034] 201 - third elastic zone; 202 - fourth elastic zone; 203 - rear outer edge; 205 - rear outer cover layer;

[0035] 206A-third elastic strand; 206B-fourth elastic strand; 210-second side edge;

[0036] 211 - third side seam; 212 - fourth side seam; 500 - fifth elastic strand;

[0037] 119 - outer non-woven fabric; 113 - first inner non-woven fabric; 113A - front region near the outer end;

[0038] 113B-front area near the inner end; 213-second inner layer of non-woven fabric; 213A-back area near the outer end;

[0039] 213B-back region near the inner end; 116-innermost layer of non-woven fabric; 116A-first end;

[0040] 116B-second end; 117, 118-adhesive layer;

[0041] 121, composite adhesive; 122A-first bonding portion; 122B-second bonding portion;

[0042] 300-bubble cavity; 300A-first outer space; 300B-second outer space;

[0043] 300C- movable end; 301- inner space;

[0044] L-longitudinal center line; T-transverse fold line; X-transverse; Y-longitudinal; DETAILED DESCRIPTION

[0045] Those skilled in the art will understand that the following detailed description is merely illustrative of exemplary embodiments and is not intended to limit the broader aspects of the present disclosure.

[0046] Definition of terms

[0047] With respect to absorbent articles, "disposable" means absorbent articles that are not generally intended to be laundered or otherwise restored or reused as absorbent articles (i.e., they are intended to be discarded after a single use and preferably can be recycled, composted, or otherwise disposed of in an environmentally compatible manner). Disposable absorbent articles typically include an adhesive between layers and / or elements to hold the article together (e.g., the ears, side panels, and belts are bonded to the chassis via an adhesive, and the layers of the ears, side panels, belts, and chassis are bonded together using an adhesive). Alternatively, thermal and / or pressure bonding are used in addition to or in place of the adhesive. In this case, portions of the material layers may become partially melted and pressed together so that upon cooling, they physically bond together.

[0048] "Pants" (also referred to as "training pants," "pre-closed diapers," "diaper pants," "pant diapers," and "pull-on diapers") refer herein to disposable absorbent articles designed for infants or adult wearers with a continuous peripheral waist opening and continuous peripheral leg openings. Pants can be constructed with a waist opening that is continuous or closed and at least one continuous, closed leg opening prior to the article being placed on the wearer. Pants can be preformed or prefastened using various techniques including, but not limited to, joining the portions of the article together using any refastenable closure member and / or permanent closure member (e.g., seams, heat bonds, pressure welds, adhesives, cohesive bonds, mechanical fasteners, etc.). Pants can be preformed anywhere along the circumference of the article in the waist region (e.g., side fastened or seamed, front waist fastened or seamed, back waist fastened or seamed).

[0049] As used in this invention, the term "nonwoven" or "nonwoven" generally refers to a web having a structure of individual fibers or yarns that is a laminate, but not in a discernible manner such as a knitted fabric. Examples of suitable nonwoven or nonwoven fabrics or webs include, but are not limited to, meltblown webs, spunbond webs, bonded-carded webs, airlaid webs, coform webs, hydroentangled webs, and the like.

[0050] As used herein, the term "meltblown web" generally refers to a nonwoven web produced by a process in which a molten thermoplastic material is extruded as molten fibers through a plurality of fine, usually circular, die capillaries into a converging high-velocity gas (e.g., air) stream, which causes the fibers of the molten thermoplastic material to be attenuated to reduce their diameter. The meltblown fibers are then conveyed by the high-velocity gas stream and deposited onto a collecting surface to form a web of randomly distributed meltblown fibers. Generally, meltblown fibers can be continuous or discontinuous microfibers, typically less than 10 microns in diameter, and are typically tacky when deposited onto a collecting surface.

[0051] As used in this invention, the term "spunbond web" generally refers to a web comprising substantially continuous fibers of small diameter. The fibers are produced by extruding a molten thermoplastic material through a plurality of fine, usually circular, spinneret capillaries. The diameter of the extruded fibers is then rapidly reduced by, for example, a draw-off draft and / or other known spunbonding mechanisms. "Proximal" and "distal" refer to the relative position of an element to the longitudinal or lateral centerline of the structure, respectively (e.g., relative to the same longitudinal axis, the proximal edge of a longitudinally extending element is closer to the longitudinal axis than the distal edge of the same element).

[0052] "Body-facing" and "garment-facing" refer to the relative position of an element or the relative position of a surface of an element or group of elements, respectively. "Body-facing" means that the element or surface is closer to the wearer during wear than some other elements or surfaces. "Garment-facing" means that the element or surface is farther from the wearer during wear than some other elements or surfaces (i.e., the element or surface is closer to the wearer's clothing, which may be worn over a disposable absorbent article).

[0053] As used herein, the term "extensible" or "extendable" generally refers to a material that stretches or elongates in the direction of force by at least about 25%, in some embodiments, about 50%, and in some embodiments, at least about 75% of its relaxed length or width. Extensible materials do not necessarily have recovery properties. For example, elastomeric materials are extensible materials with recovery properties. Meltblown webs can be extensible but do not have recovery properties and are therefore extensible, non-elastic materials.

[0054] As used in this disclosure, the term "elastomeric" or "elastic" generally refers to a material that is stretched in at least one direction (e.g., the MD direction) by application of a stretching force, and that contracts / recovers to approximately its original dimensions by release of the stretching force. For example, a stretched material may have a stretched length that is at least about 50% longer than its relaxed, unstretched length, and, by release of the stretching force, may recover to a length that is within at least 50% of its stretched length. A hypothetical example may be a 1-inch sample of material that can be stretched to 1.50 inches and, by release of the stretching force, will recover to a length of no more than 1.25 inches. Ideally, the material contracts or recovers by at least 50%, and even more ideally, by at least 80% of the stretched length.

[0055] As used herein, the term "bonded" refers to the joining, adhering, connecting, attaching, etc. of two elements. Two elements will be considered to be joined together when they are joined, adhered, connected, attached, etc. directly to each other or indirectly to each other, such as when bonded to an intermediate element. Bonding can be performed, for example, via adhesives, pressure bonds, heat bonds, ultrasonic bonds, splicing, sewing, and / or welding.

[0056] As used herein, the term "elastic strand" includes an elastic elongated material, such as but not limited to elastic rubber, wherein the elastic rubber can be made of spandex in a warp beam manner according to a spinning process.

[0057] The term "open" means that the opposing waist regions are not initially joined to form a continuous waist opening and leg openings before or during application of the article to the wearer.

[0058] The term "closed" means that the opposing waist regions are permanently or refastenably joined when encapsulated to form a continuous waist opening and leg openings.

[0059] Disposable pant-type absorbent products

[0060] First, the basic structure of the disposable pants-type absorbent article of this embodiment will be described with reference to the accompanying drawings. Figures 1 to 3 An embodiment of a disposable pant-type absorbent article is shown in a closed state with its body-facing side shown in front, rear, and side views, respectively. Figure 4 is a top plan view of an embodiment of a disposable pant-type absorbent article according to the present invention, wherein the disposable pant-type absorbent article is in an open state and longitudinally and laterally stretched and laid flat configuration, and its body-facing side is shown.

[0061] like Figure 1-4 As shown in FIG, according to the disposable pants type absorbent product 10 of the present invention, the absorbent product 10 can be as Figure 4 As shown along its longitudinal center line from Figure 4 The absorbent article 10 is generally divided into three regions from the upper side to the lower side, namely, a front region 100 including a front panel (which is formed by laminating multiple layers of nonwoven fabrics and elastic strands as described below), a back region 200 including a back panel (which is also formed by laminating multiple layers of nonwoven fabrics and elastic strands as described below), and a crotch region 300 disposed between the front region 100 and the back region 200. The front region 100 and the back region 200 are respectively located at the upper and lower ends of the absorbent article 10, and the absorbent article 10 can also define a longitudinal center line L passing through the front region 100, the crotch region 300 and the back region 200 from top to bottom. Further, in Figure 4 Also shown is a transverse fold line that passes through the crotch area 300 from left to right perpendicular to the longitudinal center line L, so that when the front area 100 and the back area 200 of the disposable pant-type absorbent article 10 are folded relative to the transverse fold line T, they can be attached to each other with the help of the side seams described below to define a pant-type wearing configuration with a waist opening and a pair of leg openings.

[0062] In this embodiment, the absorbent article 10 has a longitudinal direction Y and a transverse direction X. The absorbent article 10 is intended to be worn around the lower torso of an infant. The front region 100 and the back region 200 are designed to extend and be sized so that, after the absorbent article 10 is donned by the infant, they serve as the areas of the absorbent article 10 that circumferentially fit around at least the waist region of the wearer of the absorbent article 10 (including, for example, the wearer's lower back, buttocks, hips, and abdomen). The crotch region 300 of the absorbent article 10 is the area of ​​the absorbent article 10 that, when the absorbent article 10 is donned on the wearer, is positioned between the wearer's legs.

[0063] like Figure 1-4 As shown in FIG, in order to allow the absorbent article to absorb exudates such as urine and feces discharged by the wearer or infant, the absorbent article 10 has an absorbent assembly 400 in the crotch region 300. Here, as shown in FIG. Figure 4 As shown, at least a portion of the absorbent assembly 400 overlaps a portion of the front region 100, and at least a portion of the absorbent assembly 400 overlaps a portion of the back region 200. Thus, the absorbent assembly 400 can be bonded to each of the overlapping areas of the front region 100 and the back region 200. In various embodiments, the overlapping areas of each of the front region 100 and the back region 200 are somewhat elastic.

[0064] As an example, can have at least top sheet layer, back sheet layer and the absorbent cores positioned between top sheet layer and the back sheet layer according to the absorbent assembly 400 of present embodiment.Wherein top sheet layer limits the body-facing surface of absorbent article 10, and this surface can directly contact the health of the wearer, and is liquid-permeable to receive body exudates.Top sheet layer advantageously provides for comfort, and plays the function that body exudates is passed its own structure and is led away from health towards absorbent cores.Top sheet layer advantageously keeps little liquid or does not keep liquid in its structure, so that it provides relatively comfortable and the non-irritating surface next to absorbent article 10 wearer's skin.

[0065] In various embodiments, the top sheet layer can be constructed of various nonwoven webs such as meltblown webs, spunbond webs, spunlace webs or air-through bonded carded webs. The example of suitable top sheet layer materials may include, but is not limited to, natural fiber webs (such as cotton), rayon, spunlace webs, polyester, polypropylene, polyethylene, nylon or other heat-bondable fibers (such as bicomponent fibers), polyolefins, polypropylene and polyethylene copolymers, linear low-density polyethylene and aliphatic esters (such as polylactic acid). Fine-apertured films and net materials can also be used, as can the laminates of these materials or their combinations.

[0066] In various embodiments, the top sheet layer can have a basis weight in the range of about 5,10,15,20 or 25gsm to about 50,100,120,125 or 150gsm.For example, in one embodiment, the top sheet layer can be constructed by a basis weight of an air-through bonding carded web in the range of about 15gsm to about 100gsm.In another example, the top sheet layer can be constructed by a basis weight of an air-through bonding carded web in the range of about 20gsm to about 50gsm, such as the air-through bonding carded web that can be easily obtained from nonwoven manufacturers such as Xiamen Yanjiang Industry and Trade Co., Ltd., Beijing Dayuan Nonwoven Co., Ltd. etc.

[0067] Further absorption assembly 400 also comprises the absorbent cores positioned between the top sheet layer and the backsheet layer of absorbent article 10.Absorbent cores can be the combination of any single layer structure or layer parts generally, and it can show a certain degree of compressibility, conformability, non-irritating to the wearer's skin and can absorb and keep liquid and other body exudates.In various embodiments, absorbent cores can be formed by a variety of different materials and can comprise the required layer of any number.For example, absorbent cores can comprise one or more layers (for example, two layers) of following absorption net material: cellulose fiber (for example, wood pulp fiber), other natural fibers, synthetic fibers, weaving or nonwoven sheet, scrim netting or other stabilization structures, superabsorbent material, binder material, surfactant, selected hydrophobic and hydrophilic materials, pigment, lotion, odor control agent etc. and their combination.In various embodiments, if desired, absorbent cores can comprise the superabsorbent material of optional amount. Examples of suitable superabsorbent materials can include poly(acrylic acid), poly(methacrylic acid), poly(acrylamide), poly(vinyl ether), copolymers of maleic anhydride with vinyl ether and α-olefin, poly(vinyl pyrrolidone), poly(vinyl morpholinone), poly(vinyl alcohol), and salts and copolymers thereof.

[0068] The shape of the absorbent core can vary as desired and can include any of a variety of shapes, including, but not limited to, triangular, rectangular, dog-bone, oval, trapezoidal, T-shaped, I-shaped, and hourglass. In various embodiments, the absorbent core can have a shape that generally corresponds to the overall shape of the absorbent article 10. The dimensions of the absorbent core can be substantially similar to the dimensions of the absorbent article 10, but it should be understood that the dimensions of the absorbent core, while similar, will often be smaller than the dimensions of the entire absorbent article 10 so as to be adequately contained therein.

[0069] The backsheet layer of absorbent assembly 400 is generally liquid-impermeable and is the part of absorbent article 10 towards the wearer's clothing. Backsheet layer can allow air or steam to flow out of absorbent article 10, still blocks the process of liquid simultaneously.Any liquid-impermeable material can be used to form backsheet layer usually.Liquid-impermeable layer can be made of single layer or multilayer, and these one or more layers themselves can comprise similar or different materials.Operable suitable material can be microporous polymer film, such as polyolefin film, nonwoven and nonwoven laminate and film / nonwoven laminate of polyethylene or polypropylene.The specific structure and composition of backsheet layer can be selected from various known films and / or fabrics, and specific material is suitably selected as the liquid barrier, intensity, wear resistance, tactile characteristics, aesthetic properties etc. that provide desired level.

[0070] like Figure 4 and 6As best shown in FIG, when the disposable pant-type absorbent article 10 is in the open state and longitudinally and transversely stretched and laid flat configuration, the absorbent assembly 400 is fixedly attached to the innermost nonwoven 116 located therebeneath by means of an adhesive layer 118. Figure 6 In the embodiment of the present invention, the upper side is the side facing the body, and the lower side is the side facing the clothes. Here, as an example, the innermost non-woven fabric can be selected from hot air non-woven fabric, spunbond non-woven fabric, spunbond meltblown non-woven fabric, or hot air / spunbond / spunbond meltblown non-woven fabric with pattern printing. The fine denier of the material fiber of these non-woven fabrics can be, for example, 0.6 denier to 3.0 denier or 5 to 30 microns, and the gram weight range of the non-woven fabric is 8 g / m2 to 32 g / m2. Figure 4 As shown in , the innermost nonwoven fabric 116 is generally symmetrical about the longitudinal centerline L in the transverse direction X and is also generally symmetrical about the transverse folding line T in the longitudinal direction Y. More specifically, the innermost nonwoven fabric 116 has a first end 116A that extends a certain length L2 from the transverse folding line T in the longitudinal direction Y to extend beyond the crotch region 300 to the front region 100, and also has a second end 116B that extends a certain length L5 from the transverse folding line T in the longitudinal direction Y to extend beyond the crotch region 300 to the back region 100.

[0071] Then, if Figure 4 and 6 As shown in the figure, below the innermost nonwoven fabric 116, within the front region 100, there is a first inner nonwoven fabric 113 extending in the longitudinal direction Y, and the first inner nonwoven fabric 113 and the innermost nonwoven fabric 116 are fixedly connected to each other by means of an adhesive layer 117. The first inner nonwoven fabric 113 can be selected from air-through nonwoven fabric, spunbond nonwoven fabric, spunbond meltblown nonwoven fabric, or air-through / spunbond / spunbond meltblown nonwoven fabric with pattern printing. The fine denier of the material fibers of these nonwoven fabrics can be, for example, 0.6 denier to 3.0 denier or 5 to 30 microns, and the gram weight of the nonwoven fabrics ranges from 8 g / m2 to 32 g / m2.

[0072] Better in Figure 4As shown in , the first inner layer nonwoven fabric 113 is substantially symmetrical about the longitudinal centerline L in the transverse direction X, and the first inner layer nonwoven fabric 113 extends from the bottom of the innermost layer nonwoven fabric 116 in the direction away from the transverse folding line T within the front region 100 until the front outer edge 103 of the front region 100, after which it is folded back in the opposite direction (i.e., folded back at the front outer edge 103 of the front region 100 to extend toward the transverse folding line T) and extends a certain length L3. For this reason, the end of the first inner layer nonwoven fabric 113 close to the front outer edge 103 can be referred to as the front region outer end 113A, and the end of the first inner layer nonwoven fabric 113 close to the innermost layer nonwoven fabric 116 can be referred to as the front region inner end 113B, wherein the length L3 can be the distance between the front region outer end 113A and the front outer edge 103 of the front region 100 along the longitudinal direction. Here preferably, the front area of ​​the first inner nonwoven fabric 113 is not in contact with the absorbent assembly near the outer end 113A. Figure 6 As shown, an inner space 301 is formed within a length L3 by folding the first inner non-woven fabric 113 about the front outer edge 103, wherein the body-facing side and the clothes-facing side of the first inner non-woven fabric 113 respectively define the upper and lower boundaries of the inner space 301.

[0073] Similarly, below the innermost nonwoven fabric 116, within the rear region 200, there is a second inner nonwoven fabric 213 extending in the longitudinal direction Y and fixedly connected to the innermost nonwoven fabric 116 by means of an adhesive layer 117. The second inner nonwoven fabric 213 can be selected from air-through nonwoven fabrics, spunbond nonwoven fabrics, spunbond meltblown nonwoven fabrics, or air-through / spunbond / spunbond meltblown nonwoven fabrics with pattern printing. The fine denier of the material fibers of these nonwoven fabrics can be, for example, 0.6 to 3.0 denier or 5 to 30 microns, and the gram weight of the nonwoven fabrics ranges from 8 to 32 grams per square meter.

[0074] Better in Figure 4 As shown in , the second inner layer nonwoven fabric 213 is substantially symmetrical about the longitudinal centerline L in the transverse direction X, and the second inner layer nonwoven fabric 213 extends from below the innermost layer nonwoven fabric 116 in the direction away from the transverse fold line T within the back region 200 until the rear outer edge 203 of the back region 200, after which it is folded back in the opposite direction (i.e., folded back at the rear outer edge 203 of the back region 200 to extend toward the transverse fold line T) and extends a certain length L6. For this reason, the end of the second inner layer nonwoven fabric 213 near the rear outer edge 203 can be referred to as the rear region outer end 213A, and the end of the second inner layer nonwoven fabric 213 near the innermost layer nonwoven fabric 116 can be referred to as the rear region inner end 213B. The length L6 can be the distance between the rear region outer end 213A and the rear outer edge 203 of the back region 200 along the longitudinal direction. Preferably, the rear area of ​​the first inner nonwoven fabric 113 is not in contact with the absorbent assembly near the outer end 213A. Figure 4-6 As shown, an inner space 301 is formed within a length L6 by folding the second inner non-woven fabric 213 about the front outer edge 203, wherein the body-facing side and the clothes-facing side of the second inner non-woven fabric 213 respectively define the upper and lower boundaries of the inner space 301.

[0075] Further, it is best to Figure 6 As shown in the figure, the pants-type absorbent product 10 also includes an outer non-woven fabric 119 located on the outermost side, wherein the outer non-woven fabric 119 is substantially symmetrical about the longitudinal center line L in the transverse direction X and the outer non-woven fabric 119 extends below the first inner non-woven fabric 113 and the second inner non-woven fabric 213 and extends in the front area 100 and the back area 200 respectively to the front outer edge 103 and the back outer edge 203 of the front area 100 and the back area 200, and then is folded in the opposite direction and extended to a certain length L7 and L8 respectively. Here, the inner end of the front area of ​​the outer non-woven fabric 119 in the front area 100 is marked as 119A and the inner end of the back area in the back area 200 is marked as 119B, whereby the outer non-woven fabric 119 is subsequently fixedly connected to the absorbent component 400 by means of the composite glue 121, thereby achieving the encapsulation of the absorbent component 400 and the inner non-woven fabric. Here, the outer layer non-woven fabric 119 can be hot air non-woven fabric, spunbond non-woven fabric, spunbond meltblown non-woven fabric or hot air / spunbond / spunbond meltblown non-woven fabric with pattern printing. The diameter of the material fibers of these non-woven fabrics is 5 to 30 microns, and the gram weight range of the non-woven fabric is 10 grams / square meter to 35 grams / square meter.

[0076] exist Figure 6 As better shown in FIG. 1 , taking the front region 100 as an example, the outer nonwoven fabric 119 is fixedly connected to the absorbent assembly 400 by means of the composite adhesive 121, and is also bonded to the first inner nonwoven fabric 113 by means of the first bonding portion 122A before the front outer edge 103 is reversely folded (at Figure 6 The outer nonwoven fabric 119 is then folded at the outer edge 103 to form a movable end portion 300C that can expand or extend forward as the air is inflated as described in detail below. After the outer nonwoven fabric 119 is folded at the outer edge 103, it is bonded to the first inner nonwoven fabric 113 again by means of the second bonding portion 122B on the side facing the body, before reaching the following position of the composite adhesive 121, where the length of the position is substantially the same as that of the first bonding portion 122A on the longitudinal center line (the length in this case can be, for example, more than 5 mm). As a result, the outer nonwoven fabric 119 is Figure 6In the upper and lower side areas, the first bonding part 122A and the second bonding part 122B relative to each other can be used to define a bubble cavity 300 with a movable end 300C, in which the inner space 301 sandwiched by the first inner layer non-woven fabric 113 is accommodated.

[0077] Furthermore, Figure 6 As shown, the bubble cavity 300 includes a first outer space 300A formed on the clothing-facing side by the first inner non-woven fabric 113 and the outer non-woven fabric 119; a second outer space 300B formed on the body-facing side by the first inner non-woven fabric 113 and the outer non-woven fabric 119; and a cavity between the first and second outer spaces 300A, 300B, for air to flow into. The forward extension of the movable end 300C is related to the volume of the cavity. To meet different usage requirements, the volume of the first and second outer spaces 300A, 300B can be adjusted by adjusting the position of the first and second adhesive portions 122A, 122B, thereby varying the size of the bubble cavity and the forward extension of the movable end 300C. Preferably, the longitudinal length of the first and second outer spaces 300A, 300B ranges from 5 to 50 mm.

[0078] Of course, those skilled in the art will understand and refer to Figure 6 It can be seen that in the rear area 200, a bubble cavity and a movable end 300C can also be provided near the rear outer edge 203 by means of providing the adhesive portions 122A and 122B.

[0079] To meet the performance requirements of a pant-type absorbent article during wear, it is desirable that the front region 100 and the back region 200 be stretchable in the transverse direction when a tensile force is applied along the transverse X-direction, and that upon release of the tensile force, the front region 100 and the back region 200 retract / return to at least a portion of their stretched length, desirably to their original dimensions. The pant-type absorbent article may be at least partially comprised of a laminate having multiple elastic strands, which may be sandwiched between at least one nonwoven layer, wherein the nonwoven layer may be folded over itself. The elastic strands may be preformed, for example, from LYCRA brand fibers / yarns. LYCRA is a registered trademark of EI DuPont DeNemours Co., Wilmington, DE, USA. The elastic strands may have circular, semicircular, square, rectangular, oval, or other geometric configurations. The elastic strands may be sandwiched between at least one nonwoven or between at least two nonwovens using an adhesive, ultrasonic bonding, heat-press sealing, or any other suitable means.

[0080] The inventors of the present invention have discovered that improved fit, a distinctive delicate wrinkle appearance, a soft feel, and a considerable sense of design hierarchy can be achieved by, on the one hand, selecting and combining different elastic strands that exhibit the desired properties in the front region 100 and the back region 200, and on the other hand, providing a structure with air bubbles or airbags around high-motion areas such as the waist. Figure 1-6 The various features of the different parts of a possible embodiment are shown in more detail.

[0081] like Figure 4 As shown, near the front outer edge 103 of the front region 100, a first elastic region 101 is provided within the inner space 301 enclosed by the first inner nonwoven fabric 113, for securely securing the pant-type absorbent article to the wearer's body. The first elastic region 101 may extend from the front outer edge 103 toward the transverse fold line T for a length of at least 5 mm, preferably within a range of 5 to 60 mm.

[0082] To this end, after comprehensively considering the various requirements mentioned above, the inventors propose that within the first elastic zone 101 of the front region 100, preferably 2 to 20 elastic strands 106A having a strand fineness of 200 to 1000 denier be sandwiched between the first inner nonwoven fabric 113 on the body-facing side and the first inner nonwoven fabric 113 on the garment-facing side, aligned parallel to each other and evenly spaced apart. In various embodiments, the spacing between each elastic strand 106A within the first elastic zone 101 of the front region 100 can be approximately 2 mm or greater, preferably 2 to 15 mm. Here, these elastic strands 106 have already been stretched to a certain stretch ratio when laminated between the first inner nonwoven fabric 113. The stretch ratio is the percentage increase in length of the elastic strand or strands when the elastic component comprising the first and / or second nonwoven fabric layers is formed. For example, a strand with a free length of 10 centimeters (cm) can have a load applied such that the 10 cm elastic strand is now 15 cm long. This 5 cm length increment is 50% (5 / 10) of 10 cm, or a 50% strain. The stretch ratio can be used to change the elastic force characteristics of a single elastic strand or multiple elastic strands. The stretch ratio of the multiple elastic strands 106A can be designed to be greater than 150%, preferably between 150% and 300%.

[0083] Correspondingly, since the waistband area of ​​the pant-type absorbent article is provided by the back region 200 on the back side of the infant, the inventors also propose providing a third elastic zone 201 within the inner space near the rear outer edge 203 of the back region 200. Here, the third elastic zone 201 may extend from the rear outer edge 203 toward the transverse fold line T for a length of at least 5 mm, preferably in the range of 5 to 60 mm. Preferably, 1 to 20 elastic strands 206A, each having a strand fineness of 200 to 1000 denier, may be sandwiched between the second inner nonwoven fabric 213 on the body-facing side and the second inner nonwoven fabric 213 on the garment-facing side, aligned parallel to each other and evenly spaced apart. In various embodiments, the spacing between each elastic strand 206A within the third elastic zone 201 of the back region 100 may be approximately 2 mm or greater, preferably 2 to 15 mm. Here, the stretching ratio of the plurality of elastic strands 206A may be designed to be 150% or more, preferably 150% to 300%.

[0084] Because elastic strands 106A and 206A are provided within the inner spaces of the first elastic region 101 and the third elastic region 201 (preferably, no elastic strands or elastic components are provided in the remaining portions of these elastic regions), the outer nonwoven fabric 119 and the first inner nonwoven fabric 113 in the front region 100 and the back region 200 are nested and connected together via first and second bonding portions 122A and 122B. As a result, air-filled cavities 300 are formed between the outer nonwoven fabric 119 and the first inner nonwoven fabric 113 near the first elastic region 101 and the third elastic region 201, thanks to the elastic strands 106A and 206A.

[0085] Since there are no other bonding areas or points between the first bonding portion 122A and the second bonding portion 122B, particularly at the bend between the outer nonwoven fabric 119 and the first inner nonwoven fabric 113, the bubble cavity 300 is hollow and continuous between the first outer space 300A and the second outer space 300B. When the elastic strands 106A and 206A undergo elastic deformation, the continuously extending bubble cavity 300 allows the movable end 300C to extend a certain distance, forming a fluffy bubble-like structure. This reduces the pressure of the elastic strands 106A and 206A on the skin without affecting the contour-fitting performance provided by the elastic strands 106A and 206A, minimizing the appearance of strangulation marks and enhancing the softness and comfort of the bodyguard. Furthermore, the fluffy bubble-like structure also reduces the presence of the elastic strands 106A and 206A when directly observed by consumers, providing a psychological sense of softness and helping to enhance user trust.

[0086] Furthermore, in order to improve the fit of pant-type absorbent articles, e.g. Figure 4and 6 As shown, the first elastic region 101 immediately following the front region 100, wherein a second elastic region 102 is further provided in the region between the outer nonwoven fabric 119 and the first inner nonwoven fabric 113, wherein the range and size of the second elastic region 102 are designed to be used as a circumferentially fitting abdominal band region around the abdomen of the infant or the intended wearer after the infant wears the absorbent article 10. Here, the second elastic region 102 can be a region extending from the inner edge of the first elastic region 101 (at Figure 4 The length of the belt (from the side closest to the transverse fold line T) extending toward the transverse fold line T is at least 25 mm, preferably ranging from 25 to 90 mm. The abdominal band area corresponds to the area where the wearer's anatomy moves slightly with the wearer's movements, i.e., the low-motion zone. Therefore, compared to the high-motion zone, it does not require an excessively high fit force. Instead, it is desirable to have a variable force characteristic to ensure a better fit with the wearer's body. Furthermore, due to the large area of ​​these areas, they are expected to have a good product appearance and a visually pleasing effect for consumers.

[0087] Therefore, after considering these demand factors, the best way is to Figure 5 As shown, the inventors propose that within the second elastic zone 102 of the front region 100, preferably 50 to 800 second elastic strands 106B having a strand fineness of 40 to 300 denier are sandwiched between the first inner nonwoven fabric 113 and the outer nonwoven fabric 119, aligned parallel to each other and evenly spaced apart. In various embodiments, the spacing between the second elastic strands 106B within the second elastic zone 102 of the front region 100 can be approximately 0.5 mm or greater, preferably 0.5 to 2.5 mm. These elastic strands 106B have already been stretched to a certain stretch ratio when laminated between the first inner nonwoven fabric 113 and the outer nonwoven fabric 119. The stretch ratio of the plurality of elastic strands 106B can be designed to be 150% or greater, preferably 150% to 350%. Since the strands of these second elastic strands 106B are significantly thinner than the diameter of the elastic strands in known products, such a design can present a good product appearance and a visual effect that satisfies consumers, and can have a good fit while ensuring wearability.

[0088] like Figure 4 and 6As shown, the third elastic zone 201 immediately following the back region 200, wherein the area between the outer nonwoven fabric 119 and the first inner nonwoven fabric 213 further comprises a fourth elastic zone 202, wherein the range and size of the fourth elastic zone 202 are designed to form a circumferentially fitting hip band area around the hip area of ​​the infant or the intended wearer after the infant wears the absorbent article 10. Here, the fourth elastic zone 202 can be from the inner edge of the third elastic zone 201 (at Figure 4 The hip belt area (the side closest to the transverse fold line T) extends toward the transverse fold line T for a length of at least 25 mm, preferably within a range of 25 to 90 mm. The hip belt area corresponds to the area where the wearer's anatomy moves slightly with the wearer's movements, i.e., the low-motion zone. Therefore, compared to the high-motion zone, it does not require excessively high conforming force. Instead, it is desirable to have a variable force characteristic to ensure a better fit with the wearer's body. Furthermore, due to the large area of ​​these areas, they are expected to have a good product appearance and a visually pleasing effect for consumers.

[0089] Best as Figure 6 As shown, the inventors propose that within the fourth elastic zone 202 of the back region 200, preferably 50 to 800 fourth elastic strands 206B, each having a strand fineness of 40 to 300 denier, be sandwiched between the second inner nonwoven fabric 213 and the outer nonwoven fabric 119, aligned parallel to each other and evenly spaced apart. In various embodiments, the spacing between the fourth elastic strands 206B within the fourth elastic zone 202 of the back region 200 can be approximately 0.5 mm or greater, preferably 0.5 to 2.5 mm. These elastic strands 206B have already been stretched to a certain stretch ratio when laminated between the second inner nonwoven fabric 213 and the outer nonwoven fabric 119. The stretch ratio of the plurality of elastic strands 206B can be designed to be 150% or greater, preferably 150% to 350%. Since the strands of these fourth elastic strands 206B are significantly thinner than the diameter of the elastic strands in known products, such a design can present a good product appearance and a visual effect that satisfies consumers, and can have good fit while ensuring wearability (given in detail below).

[0090] Preferably, the pant-type absorbent article 10 may further include a plurality of fifth elastic strands 500 extending in the transverse direction for forming leg cuffs or leg opening barriers, wherein these fifth elastic strands 500 are sandwiched between the third inner nonwoven fabric 116 and the outer nonwoven fabric 119. Each elastic strand 500 that can be used as a leg opening barrier can be a single strand of elastomeric material, for example Figure 4 It should be understood that the fifth elastic strand 500 is optional.

[0091] Therefore, the elastic area in the pants-type absorbent product 10 is defined by the elastic strands mentioned above, wherein the elastic area has a longitudinal length L1 and a longitudinal length L4 in the front area 100 and the back area 200 respectively along the longitudinal Y direction. Here, the longitudinal length L1 and the longitudinal length L4 of the elastic area can be the same or different, and can be a length of more than 70% of the total longitudinal length of the front area 100 and the back area 200.

[0092] exist Figures 1 to 3 1 shows a pant-type absorbent article 10 in a worn configuration. Figure 4 The pant-type absorbent article 10 in the open state is transformed into a wearing configuration, wherein the pant-type absorbent article 10 has a first side edge 110 extending in the longitudinal direction and symmetrically arranged relative to the longitudinal center line L in the front region 100, wherein the first side edge 110 is substantially perpendicular to the front outer edge 103. Correspondingly, the rear region 200 has a second side edge 210 extending in the longitudinal direction and symmetrically arranged relative to the longitudinal center line L, wherein the second side edge 210 is substantially perpendicular to the rear outer edge 203. In order to place the absorbent article 10 in the wearing configuration so as to be worn around the lower torso of the wearer, the front region 100 is located at Figure 4 The first side edge 110 on the left side of the middle portion can be temporarily or permanently bonded to the corresponding second side edge 210 in the back region 200 by means of ultrasonic welding, adhesive or fasteners such as Velcro to form a first side seam 111 and a third side seam 211, and is located Figure 4 The first side edge 110 on the right side of the middle portion can be bonded to the corresponding second side edge 210 to form a second side seam 112 and a fourth side seam 212. These side seams thus formed can produce a wearable absorbent article 10 having a waist opening and a pair of leg openings 120 (e.g., Figure 3 ). In the pant-type absorbent article 10, for example, a front outer cover layer 105 located in the front region 100 and facing the clothing side and a rear outer cover layer 205 located in the rear region 200 and facing the clothing side can be formed by means of an outer nonwoven fabric 119.

[0093] Consumer acceptance testing

[0094] Twenty expert panelists, who are also infant caregivers, were recruited to rate the softness and comfort of the absorbent pants of the present invention against existing commercially available absorbent pants. A sensory softness test, which rates softness on a scale of 0-10 (0 being the worst softness and 10 being the best softness), found the absorbent pants of the present invention to be more than two points softer than the standard product. This indicates that the absorbent pants designed with the present invention have a noticeably softer and denser feel, which was clearly perceptible to the panelists.

[0095] Consumer wearing tests were also conducted in multiple locations, recruiting approximately 100 consumers aged 25 to 35 for comparative testing. The results concluded that the pants-type absorbent products according to the present invention have significant advantages in terms of preference, softness, fineness of hand feel, fit, and freedom from marks or redness.

[0096] As for the fit of the pants-type absorbent products, more than 20 infants and young children were invited to conduct a try-on test. The test results showed that the pants-type absorbent products according to the utility model have a very good fit and do not have problems such as falling. At the same time, no marks or red marks were produced during the actual wearing process of infants and young children.

[0097] The above test results indicate that the present invention utilizes an innovative and rational combination design using elastic strands of varying performance to fundamentally reduce the occurrence of red marks and strangulation marks on infants' waists after wearing. The innovative combination of different elastic strands and a range of stretch ratios proposed in the present invention, combined with the non-woven fabric design, achieves an invisible effect for the interposed elastic strands, essentially making them invisible to the consumer without paying close attention. This ensures the absorbent product has an excellent fit and, more importantly, achieves a distinctive, delicately wrinkled appearance and a soft feel. These product performances are highly beneficial for enhancing product competitiveness.

[0098] While the embodiments of the present invention have been illustrated and described above, those skilled in the art will appreciate that the aforementioned and other modifications, omissions, and additions may be made without departing from the spirit and scope of the present invention. The present invention should not be limited to the specific embodiments described herein, but rather encompasses all possible embodiments of the features recited in the appended claims within the scope and equivalents thereof.

[0099] The dimensions and values ​​disclosed herein should not be understood as being strictly limited to the exact numerical values ​​recited. Instead, unless otherwise indicated, each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as "40 millimeters" is intended to mean "approximately 40 millimeters."

[0100] All documents cited in the "Detailed Description" are, in relevant part, incorporated herein by reference; the citation of any document shall not be construed as an admission that it is prior art with respect to the present invention. In the event of a conflict between any meaning or definition of a term in this written document and any meaning or definition of a term in a document incorporated by reference, the meaning or definition assigned to the term in this written document shall prevail.

[0101] Although specific embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various other changes and modifications may be made without departing from the spirit and scope of the present invention. Therefore, it is intended that all such changes and modifications within the scope of the present invention be encompassed in the appended claims.

[0102] When introducing elements of the present invention or its preferred embodiment(s), the articles "a", "an", "the", and "said" are intended to indicate the presence of one or more elements. The terms "comprising", "including", and "having" are intended to be inclusive and mean that in addition to the listed elements, additional elements may be present. Many modifications and variations may be made to the present invention without departing from the spirit and scope of the present invention. Therefore, the above embodiments should not be used to limit the scope of the present invention.

Claims

1. A disposable pant-type absorbent article having a front region, a back region, and a crotch region disposed between the front region and the back region, wherein the absorbent article defines a longitudinal centerline and a transverse fold line for converting the disposable pant-type absorbent article into a wearing configuration, characterized in that: include; a front panel located in the front region and a back panel located in the back region, and an absorbent assembly located in the crotch region and extending into the front panel and the back panel; wherein the front panel and the back panel each have a front outer edge and a back outer edge, a first side edge and a second side edge respectively located on either side of a longitudinal centerline, wherein the front panel in the front region can be joined to the back panel in the back region to form a pair of side seams, thereby defining a waist opening and a pair of leg openings; wherein the absorbent assembly has a body-facing topsheet layer and a garment-facing backsheet layer and an absorbent core positioned between the topsheet layer and the backsheet layer; and an innermost nonwoven fabric layer located below the backsheet layer, wherein the innermost nonwoven fabric layer has a length extending into the front sheet and the back sheet respectively along the longitudinal center line; The front piece of the front area comprises: A first inner nonwoven fabric extending below the innermost nonwoven fabric in the front region is designed to extend from below the innermost nonwoven fabric to the front outer edge of the front region and then be folded back for a certain length to define an inner space; An outer nonwoven fabric extending below the first inner nonwoven fabric in the front region, the outer nonwoven fabric extending from the transverse folding line to the front outer edge of the front region, then folded back for a certain length and fixedly connected to the absorbent assembly, wherein the outer nonwoven fabric is fixedly bonded to the first inner nonwoven fabric at opposite sides of the folded region to define a bubble cavity with movable ends, containing the inner space therein; A first elastic zone located in the inner layer space is designed to extend from the front outer edge toward the transverse folding line for a length of more than 5 mm, wherein 1 to 20 first elastic strands with a strand fineness of 200 to 1000 deniers and a stretching ratio of more than 150% are sandwiched between the first inner nonwoven fabric facing the clothing side and the first inner nonwoven fabric facing the body side in the first elastic zone, wherein the spacing between the first elastic strands is more than 2 mm; The second elastic zone is designed to extend toward the transverse folding line immediately following the first elastic zone for a length of more than 25 mm, wherein in the second elastic zone, 20 to 800 second elastic strands with a strand fineness of 40 to 300 deniers and a stretching ratio of more than 150% are sandwiched between the first inner non-woven fabric and the outer non-woven fabric, wherein the spacing between these second elastic strands is more than 0.5 mm.

2. The disposable pant-type absorbent product according to claim 1, characterized in that: The rear piece of the rear area comprises: A second inner nonwoven fabric extending below the innermost nonwoven fabric in the rear region is designed to extend from below the innermost nonwoven fabric to the rear outer edge of the rear region and then be folded back for a certain length to define another inner space; An outer nonwoven fabric extending below the second inner nonwoven fabric in the rear region is designed to extend from a transverse folding line to the rear outer edge of the rear region and then be reversely folded for a certain length and fixedly connected to the absorbent assembly, wherein the outer nonwoven fabric is fixedly bonded to the second inner nonwoven fabric at opposite sides of the folded region to define a bubble cavity with movable ends, in which another inner space is contained; A third elastic zone located in another inner layer space is designed to extend from the rear outer edge toward the transverse folding line for a length of more than 5 mm, wherein 1 to 20 third elastic strands with a strand fineness of 200 to 1000 deniers and a stretching ratio of more than 150% are sandwiched between the second inner nonwoven fabric facing the clothing side and the second inner nonwoven fabric facing the body side in the third elastic zone, wherein the spacing between the third elastic strands is more than 2 mm; The fourth elastic zone is designed to extend toward the transverse folding line immediately following the third elastic zone by a length of more than 25 mm, wherein in the fourth elastic zone, 20 to 800 fourth elastic strands with a strand fineness of 40 to 300 deniers and a stretching ratio of more than 150% are sandwiched between the second inner non-woven fabric and the outer non-woven fabric, wherein the spacing between these fourth elastic strands is more than 0.5 mm.

3. The disposable pant-type absorbent product according to claim 1 or 2, characterized in that: The outer non-woven fabric is bonded to the first inner non-woven fabric via a first bonding portion and a second bonding portion on opposite sides of its folding area, wherein a first outer space is defined between the first bonding portion and the movable end portion, and a second outer space is defined between the second bonding portion and the movable end portion, wherein the first outer space and the second outer space are hollow and continuous.

4. The disposable pant-type absorbent article according to claim 3, wherein: The length of the first outer space and / or the second outer space along the longitudinal center line is 5 to 50 mm.

5. The disposable pant-type absorbent article according to claim 2, wherein: The first inner layer non-woven fabric and the second inner layer non-woven fabric are selected from at least one of hot air non-woven fabric, spunbond non-woven fabric and spunbond meltblown non-woven fabric, wherein the material fiber fineness of the first inner layer non-woven fabric and the second inner layer non-woven fabric is 0.6 denier to 3.0 denier and the gram weight range of the non-woven fabric is 8 g / m2 to 32 g / m2.

6. The disposable pant-type absorbent product according to claim 1 or 2, characterized in that: The outer layer nonwoven fabric is selected from at least one of hot air nonwoven fabric, spunbond nonwoven fabric, and spunbond meltblown nonwoven fabric, wherein the diameter of the material fiber of the outer layer nonwoven fabric is 5 to 30 microns and its gram weight ranges from 10 g / m2 to 35 g / m2.

7. The disposable pant-type absorbent product according to claim 1 or 2, characterized in that: The stretching ratio of the first elastic strands is 150% to 300%, and the spacing between the first elastic strands is 2 to 15 mm, or the stretching ratio of the second elastic strands is 150% to 350%, and the spacing between the second elastic strands is 0.5 to 2.5 mm.

8. The disposable pant-type absorbent article according to claim 2, wherein: The stretching ratio of the third elastic strands is 150% to 300%, and the spacing between these third elastic strands is 2 to 15 mm, or the stretching ratio of the fourth elastic strands is 150% to 350%, and the spacing between these fourth elastic strands is 0.5 to 2.5 mm.

9. The disposable pant-type absorbent product according to claim 1 or 2, characterized in that: It also includes a plurality of fifth elastic strands extending along the transverse direction and used to form leg cuffs or leg opening barriers, wherein the fifth elastic strands are sandwiched between the first inner layer nonwoven fabric and the outer layer nonwoven fabric.

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