Pants-type absorbent article

Abstract

The utility model discloses a pants type absorption product which comprises a front piece and a back piece. A back panel, wherein the back panel and the front panel are substantially symmetrically arranged along a transverse fold line; a crotch region; the waist seal has a waist seal height extending along the longitudinal center line of the pant-type absorbent product, the waist seal is provided with at least one weak part located near the waist opening and / or the leg opening, and the at least one weak part is designed to be capable of increasing the size of the waist opening and / or the leg opening when being opened under the action of external force. Therefore, the size and the tightness degree can be adjusted in a self-adaptive mode, a single pants-type absorption product can meet the requirements of people with different figures, the tightening feeling and discomfort of the legs are relieved, and therefore the user experience is improved.

Description

Technical Field

[0001] This utility model relates to the field of disposable hygiene products, and more particularly to trouser-type absorbent articles with satisfactory versatility and wearability. Background Technology

[0002] Women typically menstruate for about 5-7 days each month, during which menstrual blood is discharged from the body. From the early use of toilet paper to the present day, with economic development, sanitary napkins and tampons have emerged to absorb menstrual blood. Generally, women place sanitary napkins or tampons at the bottom of their underwear during their period to absorb the blood. However, sanitary napkins are generally for single use and must be discarded after use, inevitably creating excessive waste and burdening the environment in the long run.

[0003] As an alternative to sanitary napkins or tampons, panty-style absorbent products have been developed that allow women to wear during menstruation or their period. These are widely known as period panties. Period panties can also be called sanitary trousers. They are disposable hygiene products and are popular among women due to their convenience, comfort, and good absorbency.

[0004] Chinese utility model patent CN221600421U discloses a comfortable menstrual panty, which includes a main body comprising a front panel, a back panel, and an absorbent core. Both the front and back panels consist of a surface non-woven fabric layer, an elastic layer, and an inner non-woven fabric layer. The elastic layer is positioned between the surface and inner non-woven fabric layers and is naturally bonded to them. The lower ends of the surface non-woven fabric layers of the front and back panels are connected to form a single integral structure. Ear loops with Velcro fasteners are provided at the connection points between the back panel and the front panel on both sides. When wearing the panty, the back panel can be separated from the front panel by opening the ear loops, making it easy to remove. This design also allows for size adjustment, enabling the one-size-fits-all menstrual panty to fit most wearers.

[0005] With improvements in manufacturing processes, most existing menstrual pants are now designed as one-piece molded pants. This type of menstrual pants includes an underwear body with a longitudinal direction and a transverse direction perpendicular to the longitudinal direction. In the longitudinal direction, with the crotch area as the center, the front and back areas are respectively formed. The underwear body includes an outer covering layer and an absorbent core. The absorbent core is bonded to the inside of the outer covering layer. Then, the non-woven fabric of the front and back waistbands is melted and pressed together at the waistband position by an ultrasonic mold or a hot pressing mold to form the menstrual pants. For example, see Chinese Utility Model Patent CN221179409U.

[0006] For this type of one-piece molded pant, to ensure a balance between a snug fit and ease of opening, the wearer and the chosen menstrual pant size must be strictly matched. This is because most of these pant types use non-elastic materials, and to achieve good coverage and a sense of security, the legs cannot have sufficient room. This can easily lead to a mismatch between the wearer and the pant. Either the pant is too small, making it difficult to put on or take off or causing constriction, or it is too large, resulting in insufficient fit, air pockets, or even leakage.

[0007] In summary, there exists a pant-type absorbent article in the art that provides satisfactory versatility and wearability, allowing for adaptation to different wearer body types while providing sufficient comfort. Utility Model Content

[0008] Therefore, the objective of this invention is to provide a trouser-type absorbent article that at least partially overcomes the shortcomings of the prior art.

[0009] To accomplish the above-mentioned tasks, this utility model provides a trouser-type absorbent garment that can be folded and joined to a closed form with a waist opening and leg openings by means of an open, one-piece trouser body. It includes: a front piece, which extends substantially along the longitudinal centerline of the trouser-type absorbent garment and has a pair of front edges arranged substantially symmetrically about the longitudinal centerline and a front waist edge for forming the waist opening; a back piece, which extends substantially along the longitudinal centerline of the trouser-type absorbent garment and has a pair of back edges arranged substantially symmetrically about the longitudinal centerline and a back waist edge for forming the waist opening, wherein the back piece and the front piece are arranged substantially symmetrically along a transverse fold line; and a crotch area located between the front piece and the back piece. It is provided with an absorbent core for absorbing bodily fluids; a waistband, which is constructed by folding the edges of the front panel and / or the rear panel about the transverse fold line of the pant body to overlap and combine with each other, wherein the waistband has a waistband height extending along the longitudinal center line of the pant-type absorbent article, wherein the waistband has at least one weak part located near the waist opening and / or leg opening, wherein the at least one weak part is designed to increase the size of the waist opening and / or leg opening when opened by external force, and wherein the total height of the weak part extending along the longitudinal center line of the pant-type absorbent article does not exceed 1 to 50% of the waistband height.

[0010] Therefore, compared with the prior art, the absorbent trousers of this invention can adaptively adjust the size and tightness. Users can increase the size of the waistband or leg opening of the absorbent trousers and adjust the size of the waistband and leg opening according to their own body shape. However, while self-adjusting, the opening is not too large to cause functional defects such as side leakage due to the wearer's own movements, thus maintaining the wearer's sense of security with the absorbent trousers. This makes the absorbent trousers widely applicable to users of different body types, and each user can flexibly adjust it according to their own situation. It allows a single pair of absorbent trousers to meet the requirements of people of different body types, reducing the feeling of tightness and discomfort in the legs, thereby improving the user experience.

[0011] As a preferred aspect, it includes a first weak portion located near the waist opening and a second weak portion located near the leg opening, wherein the total height of the first weak portion extending along the longitudinal center line is 5-20% of the waistband height and the total height of the second weak portion extending along the longitudinal center line is 5-20% of the waistband height.

[0012] As a preferred aspect, the at least one weak portion is an unbonded portion formed by intermittent heat sealing or sealing.

[0013] As a preferred aspect, the at least one weak point is a cavity formed by punching holes at multiple discrete locations on the waistband of the trouser-type absorbent article.

[0014] As a preferred aspect, the absorbent core includes an absorbent surface layer and a liquid-separating bottom layer, and is designed to be removably or replaceably fixed to the inside of the crotch area.

[0015] As a preferred aspect, the absorbent core is an absorbent structure sewn into the groin area, comprising a core layer closest to the body, an absorbent layer directly below the core layer, and an outermost barrier layer to prevent leakage of bodily fluids.

[0016] The height of the waistband is designed to be in the range of 80 mm to 180 mm, and the height of the at least one weak part is no more than 5-20% of the height of the waistband.

[0017] As a preferred aspect, at least one of the front panel, back panel, and crotch area is made of an elastic material.

[0018] As a preferred aspect, the waistband has a width extending along the transverse fold line of the trouser-type absorbent article, wherein the width is in the range of 10 mm to 15 mm.

[0019] As a preferred aspect, the length of the back piece of the trouser-type absorbent article along the transverse fold line of the trouser-type absorbent article can be designed to be approximately equal to or less than the length of the front piece along the transverse fold line of the trouser-type absorbent article. Attached Figure Description

[0020] Figure 1 This is a flat view of an embodiment of the main body of the trouser-type absorbent product provided by this utility model, wherein the trouser-type absorbent product is in an open state;

[0021] Figure 2 This is a folded view of the main body of the trouser-type absorbent article according to the first embodiment of the present utility model, wherein the trouser-type absorbent article is in a closed state, and the front piece and the back piece are of equal length and the edges of the front piece and the back piece overlap each other.

[0022] Figure 3 The second embodiment of the present invention provides a folded view of the main body of the trouser-type absorbent article, wherein the trouser-type absorbent article is in a closed state, and the front piece and the back piece are of equal length and the edges of the front piece and the back piece overlap each other.

[0023] Figure 4 This is a folded view of the main body of the trouser-type absorbent article according to the third embodiment of the present utility model, wherein the trouser-type absorbent article is in a closed state, and the front piece is longer than the back piece and the edge of the front piece overlaps the edge of the back piece.

[0024] Figure 5 This is a folded view of the main body of the trouser-type absorbent article according to the fourth embodiment of the present utility model, wherein the trouser-type absorbent article is in a closed state, and the back piece is longer than the front piece and the edge of the back piece overlaps the edge of the front piece.

[0025] Figure 6 This is a partially enlarged view of the waistband of the trouser-type absorbent product of this utility model;

[0026] Figure 7 This is a schematic diagram of the trouser-shaped absorbent product of this utility model.

[0027] Explanation of reference numerals in the attached figures

[0028] 100 - Pants-style absorbent fabric; 101 - Back panel; 101A - Back waistband edge; 102 - Front panel;

[0029] 102A - Front waistband edge; 103 - Crotch area; 104A, 104B - Back panel edge;

[0030] 105A, 105B - ​​Front edge; L - Vertical center line; T - Horizontal fold line; H - Front and back center lines; X - Horizontal; Y - Vertical; 106 - Waist area; 107 - Waistband; 108 - Leg opening;

[0031] 109 - Absorbent core; 107A, 107B - Weak points; d1 - Waistband width; H1 - Waistband height;

[0032] h1, h2 - Heights of the weak points; Detailed Implementation

[0033] Those skilled in the art will understand that the following detailed description of embodiments is merely an illustration of exemplary models and is not intended to limit the broader aspects of this disclosure.

[0034] According to this utility model, a trouser-type absorbent article can be folded and joined to a closed form with a waist opening and leg openings by means of an open, one-piece trouser body. It includes: a front piece, which extends substantially along the longitudinal centerline of the trouser-type absorbent article and has a pair of front edges arranged substantially symmetrically about the longitudinal centerline and a front waist edge for forming the waist opening; a back piece, which extends substantially along the longitudinal centerline of the trouser-type absorbent article and has a pair of back edges arranged substantially symmetrically about the longitudinal centerline and a back waist edge for forming the waist opening, wherein the back piece and the front piece are arranged substantially symmetrically along a transverse fold line; and a crotch area located within the... An absorbent core for absorbing bodily fluids is provided between and on the front and rear panels; a waistband is constructed by folding the edges of the front and / or rear panels over each other along a transverse fold line about the pant body, wherein the waistband has a waistband height extending along the longitudinal centerline of the pant-type absorbent article, wherein the waistband has at least one weak portion located near the waist opening and / or leg opening, wherein the at least one weak portion is designed to increase the size of the waist opening and / or leg opening when opened by an external force, and wherein the total height of the weak portion extending along the longitudinal centerline of the pant-type absorbent article does not exceed 1-50% of the waistband height.

[0035] Certain directional terms used in the description of the accompanying drawings below, such as “inner,” “outer,” “upper,” “lower,” and other directional terms, shall be understood to have their normal meaning and refer to those directions involved when normally viewing the drawings. Unless otherwise specified, the directional terms used in this specification are generally in accordance with the conventional directions understood by those skilled in the art.

[0036] The terms “first,” “first,” “second,” “second,” and similar terms used in this utility model do not indicate any order, quantity, or importance, but are used to distinguish one component from other components.

[0037] Terminology Definition

[0038] The terms “disposable” or “reusable” are used herein to describe absorbent articles that are not typically intended to be washed or otherwise restored to or reused as absorbent articles (e.g., they are designed to be discarded after a single use and may also be configured to be recyclable, compostable, or disposed of in other environmentally compatible ways). The absorbent pants described herein are examples of disposable absorbent articles.

[0039] The term "pant-type absorbent product" (also known as "menstrual pants," "pant-type absorbent product 100," and "menstrual pants") refers herein to a disposable absorbent product or baby diaper designed for adult wearer, having a continuous perimeter waist opening and side-opposite continuous perimeter leg openings. For the avoidance of confusion, adult incontinence products can be in the form of absorbent pants. The pants may be constructed to have a continuous or closed waist opening, such as a package, and at least one continuous closed leg opening before the wearer puts on the product. The pants may be pre-formed using a variety of techniques, including but not limited to using any reusable fastening closure and / or permanent closure (e.g., stitching, thermal bonding, pressure welding, adhesives, glue bonding, mechanical fasteners, etc.) to join the parts of the product together. The pants may be pre-formed at any location around the waist area of ​​the product (e.g., side-fastening or seam-fastening, front waist-fastening or seam-fastening, back waist-fastening or seam-fastening, or combinations thereof).

[0040] Regarding structural terminology, the terms “set up” or “equipped” are used herein to indicate that one or more elements are located in a particular place or position as part of a macroscopic overall structure with other elements or as separate elements joined to another element.

[0041] As used herein, the term "joint" includes a configuration in which an element is directly secured to another element by directly attaching the element to the other element, and a configuration in which an element is indirectly secured to another element by attaching the element to an intermediate member (which in turn is attached to the other element).

[0042] As used herein, “integral” means a configuration in which an element is generated from or derived from a component or part of an article, as opposed to an element being joined to a component. “Integral formation” means generating an element from an underlying material or part thereof by, for example, molding, forming, and / or remodeling the underlying material.

[0043] "Proximal" and "distal" refer to the position of an element that is relatively close to or far from the longitudinal or lateral centerline of the structure, respectively (for example, 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).

[0044] "Facing the body" and "facing the clothing" refer to the relative positions of components or the relative positions of the surfaces of a component or group of components, respectively. "Facing the body" means that during wear, a component or surface is closer to the wearer than some other components or surfaces. "Facing the clothing" means that during wear, a component or surface is further away from the wearer than some other components or surfaces (i.e., the component or surface is closer to the wearer's clothing, which may be worn over a disposable absorbent material).

[0045] The term "opening" refers to the initial separation of opposite waist areas before or during the wearing of an article, thus not forming a continuous waist and leg opening.

[0046] The term "closure" refers to the permanent or repeatable secure joining of opposing waist areas during encapsulation to form a continuous waist opening and leg opening.

[0047] As used herein, the term "bonding" refers to the joining, adhesion, connection, attachment, etc., of two elements. Two elements are considered to be bonded together when they are joined, adhered, connected, attached, etc., directly or indirectly to each other, such as when bonded to an intermediate element. Bonding can be performed via, for example, adhesives, pressure bonding, thermal bonding, ultrasonic bonding, splicing, stitching, and / or welding.

[0048] Pants-style absorbent products

[0049] Figure 1 This is a flat view of one embodiment of the pant body of the trouser-type absorbent article 100 provided by this utility model, wherein the pant-type absorbent article 100 is in an open state. (Refer to...) Figure 1 The absorbent trousers 100 shown in the figure are formed by folding and joining a one-piece trouser body (e.g., made of a non-woven fabric with a certain elasticity or extensibility) to a closed shape with a waist opening and leg openings. The closed absorbent trousers 100 are as follows: Figure 7 As shown, the absorbent trousers 100 generally includes a front panel 102, a back panel 101, and a crotch area 103 disposed between the front panel 102 and the back panel 101. Here, as Figure 1 As shown, the front piece 102 extends generally along the longitudinal centerline L of the trouser-type absorbent article and has a pair of front edge edges 105A and 105B arranged generally symmetrically about the longitudinal centerline, and a front waist edge 102A for forming a waist opening. Meanwhile, the back piece 101 extends generally along the longitudinal centerline L of the trouser-type absorbent article 100 and has a pair of back edge edges 104A and 104B arranged generally symmetrically about the longitudinal centerline, and a back waist edge 101A for forming a waist opening. The back piece 101 and the front piece 102 are arranged generally symmetrically along the transverse fold line T.

[0050] Thus, the front piece 102 and the back piece 101 are arranged symmetrically along the fold line T and can be folded and interconnected along the lateral fold line T to form a waist area. The waist area has a waist opening formed by the front waist edge 102A and the back waist edge 101A, which accommodates the wearer's waist, and two leg openings formed by the front piece 102, the back piece 101, and the crotch area 103, which allow the wearer's thighs to pass through. The crotch area 103 is located at the bottom of the waist area.

[0051] The absorbent core 109, with a known structure and absorbent composition, is removably or replaceably fixed to the inside of the crotch area 103 (the inside refers to the side facing the wearer's crotch). As an example, the absorbent core 109 comprises, from the inside out, an absorbent surface layer and a liquid-repellent bottom layer. The absorbent surface layer is made of nonwoven fabric, such as spunlace nonwoven fabric, spunbond nonwoven fabric, spunbond nonwoven fabric, or hot-air nonwoven fabric. Using nonwoven fabric provides moisture-proof, breathable, flexible, and lightweight effects at a low cost. Because nonwoven fabric has a certain absorbency, the menstrual underwear of this invention can be used alone when menstrual flow is light, offering lightweight breathability. Furthermore, the air permeability of the liquid-repellent bottom layer is not less than 10 cubic meters per square meter per minute to further improve the breathability of the menstrual underwear.

[0052] The method of fixing the absorbent core 109 to the crotch area 103 of the trouser-type absorbent article 100 can be selectively set according to the actual situation. For example, the absorbent core 109 is fixed to the inside of the crotch area 103 of the trouser-type absorbent article 100 by glue or Velcro.

[0053] Those skilled in the art will understand that, although the absorbent core 109 is designed herein as a removable component, independent of the pant-style absorbent article 100 (which allows the wearer to replace multiple absorbent cores 109 during a single use of the pant-style absorbent article), it is equally feasible for the absorbent core 109 to be, for example, an absorbent structure sewn into the crotch area 103, comprising, for example, a wicking layer (made of 100% polyester fiber) located closest to the body, an absorbent layer (made of 85% polyester fiber and 15% polyamide fiber) located directly below the wicking layer for absorbing menstrual blood during menstruation, and a barrier layer (made of 100% polyurethane fiber) located on the outermost side of the absorbent pant fabric to prevent leakage of bodily fluids. Period pants or absorbent underwear with such a non-removable absorbent core also fall within the scope of this invention.

[0054] like Figure 1As shown, the front piece 102 has a pair of front edges 105A and 105B arranged generally symmetrically about the longitudinal center line L. These pairs of front edges 105A and 105B are each located at two transverse ends of the front piece 102, and extend a certain length along the longitudinal center line L of the pants body. Correspondingly, the rear piece 101 also has a pair of rear edges 104A and 104B arranged generally symmetrically about the longitudinal center line L. These pairs of rear edges 104A and 104B are located at two transverse ends of the rear piece 101, and also extend a certain length along the longitudinal center line L of the pants body.

[0055] Therefore, when making such Figure 7 When the absorbent trousers 100 according to the present invention, having a waist opening and two leg openings, is shown, it can... Figure 1 The trouser body shown is folded along the transverse fold line T, allowing the front edges 105A and 105B, which extend a certain length along the longitudinal center line L of the trouser body, to overlap at least to some extent with the rear edges 104A and 104B, which also extend a certain length along the longitudinal center line L of the trouser body. This allows a portion to be formed in the overlapping area of ​​the front edges 105A and 105B and the rear edges 104A and 104B, which can be laminated, heat-sealed, or ultrasonically bonded together in a bonding process. This portion can transform the open trouser body into a closed trouser-type absorbent article 100. At this time, the portion formed by the front edges 105A and 105B and the rear edges 104A and 104B joining together serves as the waistband 107 of the trouser-type absorbent article 100.

[0056] Specifically, it is best to be in Figures 2 to 5 As shown, the waistband 107 can be formed in several ways: at the two lateral ends of the front piece 102 and the back piece 101 of the trouser-type absorbent article 100, the front piece edges 105A and 105B are overlapped on the back piece edges 104A and 104B (see, for example, [reference]). Figure 4 Alternatively, the back edges 104A and 104B may overlap the front edges 105A and 105B (see, for example, [reference needed]). Figure 5 Alternatively, one of the front edge edges 105A / 105B may overlap the rear edge edge 104A / 104B, while the other front edge edge 105A / 105B may overlap the rear edge edge 104A / 104B (see, for example, [reference needed]). Figure 2-3 ).

[0057] As a feasible approach, the length of the back piece 101 of the trouser-type absorbent article 100 in the lateral direction is preferably designed to be equal to the length of the front piece 102 in the lateral direction (e.g., Figure 2-3 As shown). Specifically, as Figure 2 As shown, one of the front edges 105A of the front piece 102 can be... Figure 2 The front edge of the right side of the back piece 101 is bent a certain length d1 along the width direction of the trouser-type absorbent article 100 and stacked below the back edge 104A (in this case, the side facing the body), while the other back edge 104B of the back piece 101 (located on the right side of the front piece 101) is bent towards the back piece 101. Figure 2 The back panel edge (located on the left) is bent approximately the same length d1 towards the other front panel edge 105B of the front panel 102 along the width direction of the trouser-type absorbent article 100 and overlapped below the front panel edge 105B (here, the side facing the body). Here, the length d1 is optionally in the range of 10 mm to 15 mm. Thus, a pair of waist portions 106 are formed, which are arranged approximately symmetrically about the front and rear center lines H to bridge the front panel 102 and the back panel 101.

[0058] Or as an alternative embodiment, such as Figure 3 As shown, one of the front edges 105B of the front piece 102 ( Figure 3 The front edge of the middle piece (located on the left) is bent a certain length d1 towards the corresponding rear edge 104B of the rear piece 101 and stacked below the rear edge 104B (i.e., the side facing the body), while the other rear edge 104A of the rear piece 101 ( Figure 3 The right-side back piece edge is bent towards the other front piece edge 105A of the front piece 102 by the same length d1 and overlapped above the front piece edges 105A and 105B (i.e., the side facing the garment). Here, the length d1 is optionally in the range of 10 mm to 15 mm. Thus, a pair of waist portions 106 are formed, which are arranged generally symmetrically about the front and back center lines H to bridge the front piece 102 and the back piece 101.

[0059] As another feasible approach, the length of the back piece 101 of the trouser-type absorbent article 100 in the lateral direction is preferably shorter than the length of the front piece 102 in the lateral direction (e.g., Figure 4 As shown). Specifically, as Figure 4 As shown, the two front edges 105A and 105B of the front piece 102 can be bent inwards by a certain length d1 in the transverse direction of the front piece 102 towards the corresponding back edges 104A and 104B of the back piece 101 and stacked above the back edges 104A and 104B (on the side facing the garment) to form the area defining the waist portion 106 and subsequently used for lamination to form the waistband 107. Here, the length d1 can optionally be in the range of 10 mm to 15 mm.

[0060] As another feasible approach, the length of the back piece 101 of the trouser-type absorbent article 100 in the lateral direction is preferably designed to be longer than the length of the front piece 102 in the lateral direction (e.g., Figure 5 As shown). Specifically, as Figure 5 As shown, the two back edges 104A and 104B of the back piece 101 can be bent inwards by a certain length d1 in the transverse direction of the back piece 101 towards the corresponding front edges 105A and 105B of the front piece 102 and stacked above the front edges 105A and 105B (on the side facing the garment) to form the area defining the waist portion 106 and subsequently used for lamination to form the waistband 107. Here, the length d1 can optionally be in the range of 10 mm to 15 mm.

[0061] Figure 6 The text shows that in Figures 2 to 5 A magnified view of the area near the waist section 106 shown in the image. Figure 6 The waistband 107 shown is formed by heat sealing or ultrasonic lamination of the front edges 105A, 105B and the rear edges 104A, 104B on opposite surfaces within a certain length d1. The resulting waistband 107 is laminated together. In the laminated area, the opposing surfaces of the front edges 105A, 105B and the rear edges 104A, 104B have a waistband height H1 extending along the height direction of the trouser-type absorbent article 100. This waistband height H1 is optionally in the range of 80 mm to 180 mm, and preferably constructed as a generally rectangular structure. The term "laminated" refers to the front edges 105A, 105B and the rear edges 104A, 104B being in face-to-face contact through, for example, heat sealing or ultrasonic welding, without substantially any separation between them. The aforementioned heat sealing or lamination method employed in this invention helps maintain the structural stability of the waistband 107 and avoids undesirable strength deficiencies.

[0062] As a further preferred embodiment, the waistband 107 may also be constructed with multiple wavy stripe-like structures arranged parallel to each other. These wavy stripe-like structures extend in the lateral direction of the waistband 107 and are spaced apart from each other at a certain distance in the height direction of the trouser-type absorbent article 100. Preferably, each interval is equal. The distance between the aforementioned wavy stripe-like structures is preferably between 2 and 8 millimeters.

[0063] As an important technical means for solving the technical problem of this utility model, such as Figure 6 As shown, the waistband 107 of the trouser-type absorbent article 100 has at least one weak portion 107A or 107B, in this case two weak portions 107A and 107B, wherein the first weak portion 107A is arranged near the waist opening (located in...). Figure 6The second weak point 107B is located near the leg opening (located above the middle) and the second weak point 107B is located near the leg opening (located in the upper part of the middle). Figure 6 (below the middle).

[0064] In this paper, the term "weak section" refers to a region or part of the waistband that has been structurally or mechanically weakened. The structural integrity or mechanical properties of this weak section are significantly different from those of the unweakened regions or parts of the waistband. For example, an unweakened region of the waistband can withstand tensile forces or stresses of, for example, more than 20 Newtons without breaking, while a weakened weak section can only withstand tensile forces or stresses of, for example, less than 10 Newtons without breaking. Weakening the waistband can be implemented by leaving the laminated edge materials unbonded or weakly bonded, or by applying multiple cuts, slits, or perforations of various shapes to the laminated areas, as long as the applied method affects the mechanical properties of the weak section.

[0065] In particular, the term "weak part" does not necessarily mean that the weakened area is continuous. It is also feasible to design the mechanical properties of the weakened part to have discontinuous or staged mechanical characteristics. For example, weak part 107A is most prone to fracture near its rear edge, while its structural integrity is strongest and less prone to tearing further away from the rear edge. Similarly, weak part 107B can also be designed to have such staged mechanical properties. This can be achieved, for example, by means of discontinuous lamination or the application of discontinuous cuts or slits.

[0066] Preferably, these weak portions 107A or 107B can be formed by intermittent heat sealing or sealing. Alternatively, the weak portions 107A or 107B can also be formed by perforation at the waistband 107 position near the waist circumference 106 of the trouser absorbent product 100 using a perforation process. This allows the weak portions 107A or 107B to remain connected when not subjected to external tearing force, keeping the waistband 107 near the waist circumference 106 of the trouser absorbent product 100 intact. When the two ends of the weak portions 107A or 107B are subjected to a predetermined tensile force, they can break along the position of the weak portions 107A or 107B, thereby separating the waistbands 107 near the waist circumference 106 of the trouser absorbent product 100 from each other. This correspondingly increases the size of the waist opening adjacent to the first weak portion 107A or the size of the leg opening adjacent to the second weak portion 107B. Meanwhile, the area between the upper weak portion 107A and the lower weak portion 107B of the waistband 107, because it is not weakened, can still maintain its structural integrity when subjected to the predetermined tensile force. Those skilled in the art will understand that even if the upper weak portion 107A and the lower weak portion 107B tear under external force, the structural integrity of the middle area of ​​the waistband 107 is maintained, allowing the trouser absorbent article 100 to still ensure an effective connection between the front and back panels, thereby ensuring a close fit between the trouser absorbent article 100 and the user.

[0067] Particularly preferred is that the mechanical properties of the areas where the unreinforced regions of the waistband 107 meet the weak points 107A and 107B below can be strengthened to prevent undesirable breakage of the entire waistband 107 during normal wear. For example, after strengthening the connecting areas, these areas can withstand tensile forces or stresses of 30 Newtons or more without breaking, thereby significantly reducing the likelihood of the waistband 107 breaking during normal movement. This strengthening of mechanical properties can be achieved, for example, by applying greater energy input during lamination, or by setting the material properties of the edges of the laminated front and rear pieces.

[0068] The result of this design is that even if the wearer's size does not perfectly match or fit the trouser-type absorbent article 100 according to this invention, the user will adaptively adjust the opening degree of the first weak part 107A or the second weak part 107B based on the interaction force between the limb inserted into the waist opening and leg opening and the trouser-type absorbent article 100. For example, when the size difference between the wearer and the trouser-type absorbent article 100 is large, the limb inserted into the waist opening and leg opening will interact with the trouser-type absorbent article 100 with a greater tightening force during the user's wearing of the trouser-type absorbent article 100. This causes the first weak part 107A or the second weak part 107B to open to a greater extent until the waist opening or leg opening and the inserted limb are in a slightly tightened tight fit. This tight fit is beneficial for preventing side leakage of bodily fluids. Conversely, when the size difference between the wearer and the trouser-type absorbent article 100 is small or even non-existent, the limb inserted into the waist opening and leg opening during the user's wearing of the trouser-type absorbent article 100 will interact with the trouser-type absorbent article 100 with a small (or even non-existent) tightening force. This causes the first weak part 107A or the second weak part 107B to open to a lesser extent (or even not at all) until the waist opening or leg opening is in a slightly tightening fit with the inserted limb. This tight fit is beneficial for preventing side leakage of bodily fluids.

[0069] As shown in Figure 6, the extension height h1 of the first weak portion 107A along the height direction can be, for example, 5-20% of the waistband height H1, preferably 5-10%, and most preferably 6-9%. Testing has shown that designing the first weak portion 107A to the above dimensions satisfies users' needs for size adjustment or fit, while also virtually eliminating the possibility of fluid leakage. Similarly, the extension height h2 of the second weak portion 107B along the height direction can be, for example, 5-20% of the waistband height H1, preferably 5-10%, and most preferably 6-9%. Testing has shown that designing the second weak portion 107B to the above dimensions satisfies users' needs for size adjustment or fit, while also virtually eliminating the possibility of fluid leakage. In general, it is preferable to design the sum of the extension height h1 of the first weak part 107A and the extension height h2 of the second weak part 107B to be no more than 1 to 50% of the waist seal height H1. Experiments show that this can meet the user's needs for size adjustment or adaptability, while also basically eliminating the possibility of fluid leakage.

[0070] As a preferred aspect, the waist area of ​​the trouser-type absorbent article 100 can be designed to have a certain degree of elasticity, and / or the crotch area 103 of the trouser-type absorbent article 100 can be designed to have a certain degree of elasticity. Both the waist area and the crotch area 103 can be made of elastic materials, such as elastic fabric; elastic bands can also be provided in the waist area and the crotch area 103 respectively, thereby making them elastic. Without needing to break the first weak part 107A or the second weak part 107B, the user can wear the trouser-type absorbent article 100 according to this utility model in the same way as wearing trousers. Making the waist area and crotch area 103 elastic facilitates the user's putting on and taking off the trouser-type absorbent article 100 and ensures that the trouser-type absorbent article 100 always fits the user. Even if the user's waist circumference may change significantly in a short period of time after wearing the trouser-type absorbent article 100, such as after eating a large amount of food, the elastic waist area can still ensure the user's wearing comfort.

[0071] It should be pointed out that, although in Figure 6 The diagram shows a first weak portion 107A located above and a second weak portion 107B located below, but those skilled in the art will understand that only the first weak portion 107A located above is provided (see...). Figure 7 Alternatively, it is also feasible to have only a second weak section 107B located below.

[0072] As described above, the pant-style absorbent product 100 disclosed herein is designed to adaptively adjust its size and tightness. Users can increase the waist circumference or leg opening size of the pant-style absorbent product and adjust these sizes according to their body shape. However, while self-adjusting, the openings are not excessively large enough to cause functional defects such as side leakage due to the wearer's movements, thus maintaining the wearer's sense of security regarding the absorbent product. This allows the pant-style absorbent product to be widely applicable to users of different body types, and each user can flexibly adjust it according to their own needs. It allows a single pair of pant-style absorbent products to meet the requirements of people of different body types, reducing the feeling of tightness and discomfort in the legs, thereby improving the user experience.

[0073] The embodiments of this utility model have been illustrated and described herein, but those skilled in the art should understand that various modifications, omissions, and additions can be made without departing from the spirit and scope of this utility model. It should not be understood as limited to the specific embodiments described herein, but encompasses all possible embodiments embodied within the scope and equivalents of the features described in the appended claims.

[0074] The dimensions and values ​​disclosed herein should not be construed as strictly limited to the precise numerical values ​​stated. Rather, unless otherwise specified, each such dimension is intended to represent the value and a functionally equivalent range around that value. For example, a dimension disclosed as “40 mm” is intended to represent “approximately 40 mm”.

[0075] All documents referenced in the “Detailed Description” section are incorporated herein by reference in the relevant sections; no reference to any document should be construed as an admission that it is prior art concerning this utility model. In the event of any conflict between the meaning or definition of any term in this written document and the meaning or definition of any term in the referenced documents, the meaning or definition assigned to the term in this written document shall prevail.

[0076] While specific embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that many other changes and modifications can be made without departing from the spirit and scope of the present invention. Therefore, the appended claims are intended to cover all such changes and modifications within the scope of the present invention.

[0077] When describing elements of the present invention or their preferred embodiments(s), the articles "a," "an," "the," and "the" are intended to indicate the presence of at least one element. The terms "comprising," "including," and "having" are intended to be inclusive and mean that additional elements may be present in addition to the listed elements. Many modifications and variations may be made to the present invention without departing from the spirit and scope thereof. Therefore, the above embodiments are not intended to limit the scope of the present invention.

Claims

1. A pant-type absorbent article which is capable of being turned inside out and joined to a closed configuration having a waist opening and leg openings by means of an integral pant body, characterized by, comprises: a front panel extending generally along a longitudinal centerline of the pant-type absorbent article and having a pair of front panel edges arranged generally symmetrically about the longitudinal centerline and a front waist edge for forming a waist opening; a back panel extending generally along the longitudinal centerline of the pant-type absorbent article and having a pair of back panel edges arranged generally symmetrically about the longitudinal centerline and a back waist edge for forming a waist opening, wherein the back panel is arranged generally symmetrically about the transverse fold line with the front panel; a crotch region located between the front panel and the back panel and having an absorbent core for absorbing body fluids disposed thereon; a waist seal configured to be folded over onto itself and joined by the front panel edges and / or the back panel edges about the transverse fold line of the pant body, wherein the waist seal has a waist seal height extending along the longitudinal centerline of the pant-type absorbent article, wherein the waist seal is provided with at least one weakness located in the vicinity of the waist opening and / or the leg openings, wherein the at least one weakness is designed to increase the size of the waist opening and / or the leg openings when opened by an external force, and wherein the total height of the at least one weakness extending along the longitudinal centerline of the pant-type absorbent article is not more than 1-50% of the height of the waist seal.

2. The pant-type absorbent article of Claim 1, characterized in that comprises a first weakness disposed in the vicinity of the waist opening and a second weakness disposed in the vicinity of the leg openings, wherein the total height of the first weakness extending along the longitudinal centerline is 5-20% of the height of the waist seal and the total height of the second weakness extending along the longitudinal centerline is 5-20% of the height of the waist seal.

3. The pant-type absorbent article of Claim 1, characterized in that, wherein the at least one weakness is an unjoined portion formed by intermittent heat sealing or sealing.

4. The pant-type absorbent article of Claim 1, characterized in that, wherein the at least one weakness is a void portion formed by perforation at a plurality of discrete locations of the waist seal of the pant-type absorbent article.

5. The pant-type absorbent article of Claim 1, characterized in that, wherein the absorbent core comprises an absorbent top layer and a liquid-impermeable bottom layer and is designed to be removably or replaceably secured to the inside of the crotch region.

6. The pant-type absorbent article of Claim 1, wherein wherein the absorbent core is a sewn absorbent structure in the crotch region comprising a wicking layer located closest to the body side, an absorbent layer located directly below the wicking layer, and an outermost barrier layer for preventing the exudation of body fluids.

7. The pant-type absorbent article of Claim 1, characterized in that, wherein the height of the waist seal is designed to be in the range of 80 mm to 180 mm, and the height of the at least one weakness is not more than 5-20% of the height of the waist seal, respectively.

8. The pant-type absorbent article of Claim 1, characterized in that, wherein at least one of the front panel, the back panel, and the crotch region is made of an elastic material.

9. The pant-type absorbent article of Claim 1, characterized in that, wherein the waist seal has a width extending along the transverse fold line of the pant-type absorbent article, wherein the width is in the range of 10 mm to 15 mm.

10. The pant-type absorbent article of Claim 1, characterized in that wherein the back panel of the pant-type absorbent article has a length in the direction of the transverse fold line of the pant-type absorbent article that is designed to be generally equal to or less than the length of the front panel in the direction of the transverse fold line of the pant-type absorbent article.

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