Pants-type absorptive article

Abstract

The utility model relates to a shorts type absorptive article which comprises an outer cover body and an absorptive main body connected to the skin side face of the outer cover body. The outer packaging body comprises an inner-layer non-woven fabric, an outer-layer non-woven fabric and a paper pulp fiber sheet, the inner-layer non-woven fabric is arranged on the side close to the skin, and the outer-layer non-woven fabric is arranged on the non-skin side; paper pulp fiber sheets are arranged between the front waist part, the abdomen part, the hip part, the rear waist part and the inner-layer non-woven fabric and the outer-layer non-woven fabric; a plurality of waist elastic lines extending in the width direction are arranged on at least one side of the paper pulp fiber sheet in the thickness direction; the inner-layer non-woven fabric is mutually jointed with the paper pulp fiber sheet, and the outer-layer non-woven fabric is mutually jointed with the paper pulp fiber sheet; the waist elastic thread has an average dtex number of 10 dtex to 400 dtex; in the length direction, the plied yarn distance between every two adjacent waist elastic threads ranges from 0.2 mm to 8 mm. The paper pulp fiber sheet arranged on the outer packaging body has the effect of covering waist elastic lines, the wearing experience is improved, and the appearance is good; and the problem of glue permeation in the process of preparing the shorts-type absorptive article is solved to a certain extent.

Description

Technical Field

[0001] The utility model relates to the technical field of disposable sanitary products, especially sanitary napkins, diapers, pull-up pants and other fields, and particularly refers to a short-pant absorbent article. Background Art

[0002] Common short-pant absorbent articles have an outer elastic waistband provided at the front waist and the back waist of the wearer, and an absorbent main body provided at the crotch with water absorption and water locking effects. The outer elastic waistband generally includes an outer non-woven fabric, an inner non-woven fabric, and an elastic member with elasticity disposed between the outer non-woven fabric and the inner non-woven fabric. Non-woven fabric is also called non-woven cloth. The main raw materials of non-woven materials are polyester, polypropylene, polyamide, etc., and are made by processes such as melt blowing and needling; the elastic member in the outer elastic waistband generally uses relatively thick elastic yarns (for example, the average decitex is greater than 500 dtex), and a relatively large elastic yarn spacing (for example, the yarn spacing is greater than 4 mm). The outer elastic waistband has a certain elasticity with the expansion and contraction of the elastic member. Due to the relatively thick elastic member and large spacing, the prepared outer elastic waistband has large concave and convex wrinkles in the natural state and the stretched state, resulting in poor appearance flatness and affecting the wearing experience.

[0003] With the expansion and contraction of the elastic member of the outer elastic waistband of the existing short-pant absorbent article, the generated concave and convex wrinkles are relatively large, which not only reduces the contact area with the wearer's body, increases the linear pressure of the elastic member on the wearer's body parts, resulting in reduced comfort and softness, but also easily sees the linear elastic member through the outer non-woven fabric material, affecting the wearing experience.

[0004] In the process of preparing the outer elastic waistband of the short-pant absorbent article made of non-woven fabric in the past, the following problems will occur. That is, when bonding the outer non-woven fabric and the inner non-woven fabric with a hot melt adhesive, since the used non-woven fabric is becoming thinner, lighter and softer, such non-woven fabric has a relatively loose fiber arrangement and large gaps between the fibers. The adhesive will seep out through the gaps between the fibers of the non-woven fabric to the product surface, that is, the problem of glue seepage will occur, making the sheet material harden and affecting the wearing effect and appearance. Summary of the Utility Model

[0005] The utility model provides a short-pant absorbent article to solve the technical problems that the elastic member of the outer body waistband of the short-pant absorbent article is thick and has a large spacing, the outer body waistband has large concave and convex wrinkles in the natural state and the stretched state, the appearance flatness is poor, and it is easy to see the elastic line through the outer non-woven fabric, which not only affects the product appearance, but also leads to a decline in the wearing experience, as well as the glue seepage of the outer body waistband and the hardening of the sheet material, affecting the wearing effect and appearance.

[0006] The technical solution provided by the utility model is as follows:

[0007] An object of the present utility model is to provide a short pants-type absorbent article, which has a length direction, a width direction, and a thickness direction that are orthogonal to each other;

[0008] In the length direction, the short pants-type absorbent article has a front waist portion disposed on the front waist side of the wearer, an abdomen portion disposed on the ventral side of the wearer, a hip portion disposed on the posterior buttocks of the wearer, a rear waist portion disposed on the dorsal side of the wearer, and a crotch portion disposed between the abdomen and the hip;

[0009] In the length direction, the short pants-type absorbent article has an opposite front body portion and rear body portion;

[0010] Along the thickness direction, the short pants-type absorbent article has a skin side in contact with the wearer's skin and a non-skin side away from the skin;

[0011] The short pants-type absorbent article includes an outer package body and an absorbent main body connected to one side of the skin side of the outer package body;

[0012] The front body portion and the rear body portion are folded in half along the length direction. Along the width direction, the two side edges of the outer package body on the front waist and abdomen are respectively joined to the two side edges of the outer package body on the hip and rear waist to form side seal portions, so that the short pants-type absorbent article forms a waist opening and two leg openings;

[0013] Wherein, the outer package body includes an inner non-woven fabric, an outer non-woven fabric, a pulp fiber sheet, and a waist elastic thread. The inner non-woven fabric is disposed on the side close to the skin, and the outer non-woven fabric is disposed on the non-skin side;

[0014] The pulp fiber sheet is disposed between the inner non-woven fabric and the outer non-woven fabric, and the pulp fiber sheet is located at the front waist and abdomen, as well as the hip and rear waist; in the crotch portion of the outer package body, the pulp fiber sheet is not provided;

[0015] Along the thickness direction, at least on one side of the pulp fiber sheet, a plurality of waist elastic threads extending along the width direction are disposed; wherein, the waist elastic thread has an average decitex of 10 dtex to 400 dtex; along the length direction, the strand spacing between two adjacent waist elastic threads is 0.2 mm to 8 mm;

[0016] The inner non-woven fabric and the pulp fiber sheet are joined to each other, and the outer non-woven fabric and the pulp fiber sheet are joined to each other;

[0017] In a preferred embodiment, the grammage of the pulp fiber sheet is 5 to 20 g / m 2between; at the front waist and abdomen, and at the buttocks and back waist, in the longitudinal direction, the size of the pulp fiber sheet is 100 mm to 300 mm, and the pulp fiber sheet covers the waist elastic line.

[0018] In a preferred embodiment, the light transmittance of the pulp fiber sheet is less than that of the outer non-woven fabric or the inner non-woven fabric; in the width direction, the elongation at break of the pulp fiber sheet is 10% to 60%, and the elongation at break of the inner non-woven fabric or the outer non-woven fabric is 40% to 150%; the elongation at break of the inner non-woven fabric or the outer non-woven fabric is greater than that of the pulp fiber sheet.

[0019] In a preferred embodiment, in the width direction, the stretching ratio range of the outer package is 2 to 3.5 times.

[0020] In a preferred embodiment, the outer non-woven fabric of the outer package is folded over to the side of the skin of the absorbent body at both ends in the longitudinal direction, forming a folded portion;

[0021] The folded portion covers part of the inner non-woven fabric and both ends of the absorbent body.

[0022] In a preferred embodiment, at the front waist and the back waist, the outer package is provided with end elastic lines extending in the width direction and arranged at intervals in the longitudinal direction;

[0023] The end elastic lines are arranged between the folded portion and the inner non-woven fabric.

[0024] In a preferred embodiment, the inner non-woven fabric and the outer non-woven fabric of the outer package extend from the front waist and abdomen, through the crotch, to the buttocks and the back waist;

[0025] In the thickness direction, a plurality of the waist elastic lines extending in the width direction are arranged between the inner non-woven fabric and the pulp fiber sheet.

[0026] In a preferred embodiment, the inner non-woven fabric and the outer non-woven fabric of the outer package extend from the front waist and abdomen, through the crotch, to the buttocks and the back waist;

[0027] In the thickness direction, a plurality of the waist elastic lines extending in the width direction are arranged between the outer non-woven fabric and the pulp fiber sheet.

[0028] In a preferred embodiment, the outer package includes a waist stretchable portion extending in the width direction and outer fixing portions arranged on both sides of the waist stretchable portion;

[0029] The outer package further includes leg elastic lines with arc curves extending from the abdomen to the crotch and from the buttocks to the crotch; at the abdomen and buttocks, the leg elastic lines extend to the outer fixing parts, and in the thickness direction, the leg elastic lines partially overlap with the pulp fiber sheet;

[0030] The leg elastic lines are arranged between the inner non-woven fabric and the outer non-woven fabric.

[0031] In a preferred embodiment, the inner non-woven fabric of the outer package is arranged at the front waist and abdomen, as well as the buttocks and the back waist;

[0032] In the thickness direction, a plurality of first waist elastic lines extending in the width direction are arranged between the inner non-woven fabric and the pulp fiber sheet;

[0033] And, a plurality of second waist elastic lines extending in the width direction are arranged between the outer non-woven fabric and the pulp fiber sheet.

[0034] In a preferred embodiment, the outer package further includes a covering layer sheet extending in the length direction;

[0035] At the abdomen and buttocks, the covering layer sheet at least partially overlaps with the inner non-woven fabric.

[0036] In a preferred embodiment, the outer package includes a waist stretchable part extending in the width direction, and outer fixing parts arranged on both sides of the waist stretchable part;

[0037] The outer package further includes leg elastic lines with arc curves extending from the abdomen to the crotch and from the buttocks to the crotch; at the abdomen and buttocks, the leg elastic lines extend to the outer fixing parts, and in the thickness direction, the leg elastic lines partially overlap with the pulp fiber sheet;

[0038] The leg elastic lines are arranged between the covering layer sheet and the outer non-woven fabric.

[0039] The above technical solution of the present utility model has at least the following beneficial effects compared with the prior art:

[0040] The present utility model provides a short-pant type absorbent article. The outer package body includes an inner non-woven fabric, an outer non-woven fabric, and a pulp fiber sheet. In the front waist and abdomen, as well as the buttocks and the back waist, the pulp fiber sheet is disposed between the inner non-woven fabric and the outer non-woven fabric; in the thickness direction, at least on one side of the pulp fiber sheet, a plurality of waist elastic threads extending in the width direction are disposed; the waist elastic threads have an average decitex of 10 dtex to 400 dtex; along the length direction, the strand spacing between two adjacent waist elastic threads is 0.2 mm to 8 mm. By disposing the pulp fiber sheet between the inner non-woven fabric and the outer non-woven fabric in the present utility model, and the breaking elongation rate of the inner non-woven fabric or the outer non-woven fabric is greater than that of the pulp fiber sheet, combined with the setting method of the average decitex of the waist elastic threads and the strand spacing between two adjacent waist elastic threads, not only does the waist circumference of the outer package body have smaller wrinkles in both the natural state and the stretched state, with better appearance flatness and being softer in contact with the body; and because the light transmittance of the pulp fiber sheet is less than that of the outer non-woven fabric or the inner non-woven fabric (the arrangement of the pulp fiber sheet fibers is denser and the fiber voids are smaller relative to the fibers of the inner non-woven fabric (outer non-woven fabric)), therefore, the outer package body of the present utility model is provided with a pulp fiber sheet, which has the effect of covering the waist elastic threads, not only improving the wearing experience, but also having a better appearance; and to a certain extent, solving the problem of glue seepage that occurs during the preparation of the short-pant type absorbent article. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0042] Figure 1 It is a schematic diagram of the front body part and the back body part of a short-pant type absorbent article in Embodiment 1 of the present utility model when unfolded.

[0043] Figure 2 It is a schematic diagram of the front body part and the back body part of a short-pant type absorbent article in Embodiment 1 of the present utility model when folded along the length direction to form a waist opening and two leg openings.

[0044] Figure 3 It is a cross-section along the length direction of the front body part and the back body part of a short-pant type absorbent article in Embodiment 1 of the present utility model ( Figure 1 in the T-T direction) schematic diagram.

[0045] Figure 4 It is a comparison diagram of the inner non-woven fabric or the outer non-woven fabric of the present utility model and the pulp fiber sheet under a two-fold magnification.

[0046] Figure 5 This is a comparison diagram of the inner non-woven fabric or the outer non-woven fabric of the present utility model with the pulp fiber sheet under a five-fold magnification.

[0047] Figure 6 This is a schematic diagram of the front part and the rear part of a short-pant type absorbent article in the second embodiment of the present utility model being folded in half along the length direction to form a waist opening and two leg openings.

[0048] Figure 7 This is a cross-sectional view ( Figure 6 in the S-S direction in the figure) of the front part and the rear part of a short-pant type absorbent article in the second embodiment of the present utility model in an unfolded state along the length direction. Detailed implementation manners

[0049] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0050] Unless otherwise defined, the technical terms or scientific terms used in the present utility model shall have the ordinary meanings understood by those of ordinary skill in the art to which the present utility model pertains. The "first", "second" and similar terms used in the present utility model do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, the terms such as "a", "an" or "the" do not denote a quantity limitation, but mean that there is at least one. The terms such as "comprising" or "including" mean that the elements or objects appearing before the term cover the elements or objects listed after the term and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0051] It should be noted that the "upper", "lower", "left", "right", "front", "rear", etc. used in the present utility model are only used to represent relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0052] Embodiment 1.

[0053] Combined with Figures 1 to 3, according to an embodiment of the present utility model, a short-pants type absorbent article is provided. The short-pants type absorbent article has a length direction, a width direction, and a thickness direction that are orthogonal to each other.

[0054] In the length direction, the short-pants type absorbent article has a front waist portion B1 disposed on the front waist side of the wearer, an abdominal portion B2 disposed on the ventral side of the wearer, a buttock portion B4 disposed on the posterior buttocks of the wearer, a rear waist portion B5 disposed on the dorsal side of the wearer, and a crotch portion B3 disposed between the abdomen and the buttocks. In the length direction, the short-pants type absorbent article has an opposing front body portion F and rear body portion B.

[0055] In the thickness direction, the short-pants type absorbent article has a skin side in contact with the wearer's skin and a non-skin side away from the skin side, as Figure 3 shown.

[0056] Combined Figure 1 and Figure 3 , according to an embodiment of the present utility model, the short-pants type absorbent article includes an outer package 20 and an absorbent main body 10 connected to one side of the skin side of the outer package 20.

[0057] In the width direction, the front body portion F and the rear body portion B are folded in half along the length direction. In the width direction, the two side edges of the outer package 20 on both sides of the front waist portion B1 and the abdominal portion B2 are respectively joined to the two side edges of the outer package 20 on the buttock portion B4 and the rear waist portion B5 to form side seals 30, so that the short-pants type absorbent article forms a waist opening and two leg openings, as Figure 2 shown.

[0058] The absorbent main body 10 is a core structure that mainly absorbs excrement. The absorbent main body 10 is disposed along the length direction, extending from the abdominal portion B2 through the crotch portion B3 to the buttock portion B4. The absorbent main body 10 includes a liquid-permeable surface sheet (not shown in the figure) disposed on one side of the skin side of the absorbent main body 10, an impermeable back sheet (not shown in the figure) disposed on one side of the non-skin side of the absorbent main body 10, and an absorbent body (not shown in the figure) located between the two.

[0059] In the crotch portion B3, in the width direction, the outer package 20 forms arc-shaped leg girth lines 20a on both sides of the absorbent main body 10, which fit more closely to the leg contour of the wearer.

[0060] Combined Figure 1 and Figure 3 , according to an embodiment of the utility model, the outer package 20 includes an inner non-woven fabric 21, an outer non-woven fabric 22, and a waist elastic thread 24. In the thickness direction, the inner non-woven fabric 21 is disposed on the side closer to the skin side, and the outer non-woven fabric 22 is disposed on the non-skin side.

[0061] A pulp fiber sheet 23 is disposed between the inner non-woven fabric 21 and the outer non-woven fabric 22. The pulp fiber sheet 23 is located in the front waist part B1, the abdomen B2, as well as the buttocks B4 and the rear waist part B5. The pulp fiber sheet 23 is correspondingly disposed in the area of the waist elastic line 24 of the outer package 20, mainly in the front waist part B1, the abdomen B2, as well as the buttocks B4 and the rear waist part B5. Further, in the crotch part B3 of the outer package 20, the pulp fiber sheet 23 is not provided. Since a relatively large number of waist elastic lines 24 are provided in the areas of the front waist part B1, the abdomen B2, as well as the buttocks B4 and the rear waist part B5, the close-fitting property will be improved, but it will also bring the problem of poor air permeability in the waist area. By disposing the pulp fiber sheet 23 in this area, the moisture absorption and sweat discharge functions of the outer package 20 in the waist and abdomen and the waist and buttocks can be increased, the stuffy feeling and air permeability during wearing can be improved, and the wearing comfort can be enhanced. Along the thickness direction, at least on one side of the pulp fiber sheet 23, a plurality of waist elastic lines 24 extending in the width direction are disposed. The inner non-woven fabric 21 and the pulp fiber sheet 23 are joined to each other, and the outer non-woven fabric 22 and the pulp fiber sheet 23 are joined to each other.

[0062] In this embodiment, the inner non-woven fabric 21 and the outer non-woven fabric 22 of the outer package 20 extend from the front waist part B1 and the abdomen B2, through the crotch part B3, to the buttocks B4 and the rear waist part B5. In the front waist part B1, the abdomen B2, as well as the buttocks B4 and the rear waist part B5, a pulp fiber sheet 23 is disposed between the inner non-woven fabric 21 and the outer non-woven fabric 22.

[0063] Along the thickness direction, a plurality of waist elastic lines 24 extending in the width direction are disposed between the inner non-woven fabric 21 and the pulp fiber sheet 23. The inner non-woven fabric 21 and the pulp fiber sheet 23 are joined to each other, and the outer non-woven fabric 22 and the pulp fiber sheet 23 are joined to each other.

[0064] In this embodiment, the inner non-woven fabric 21 and the pulp fiber sheet 23 are joined by continuous or discontinuous first bonding parts G1. The first bonding parts G1 can be realized by any method known in the art, such as using hot melt adhesives, hot pressing, and ultrasonic methods. The bonding strength can be adjusted by the bonding area or by ultrasonic energy.

[0065] In this embodiment, the first bonding parts G1 are realized by using hot melt adhesives. Specifically, the outer periphery of the waist elastic line 24 is coated with hot melt adhesives, or at least one of the inner non-woven fabric 21 and 23 is coated with hot melt adhesives, or all of the waist elastic line 24, the inner sheet 21, and the paper sheet 23 are coated with hot melt adhesives. The inner sheet 21 and the paper sheet 23 are joined to each other through continuous or discontinuous first bonding parts G1, and a plurality of waist elastic lines 24 extending in the width direction are disposed between the inner sheet 21 and the paper sheet 23.

[0066] Preferably, at least one of the inner non-woven fabric 21 and the pulp fiber sheet 23 is coated with a hot melt adhesive, and the hot melt adhesive is coated on at least one of the inner non-woven fabric 21 and the pulp fiber sheet 23 at intervals or continuously along the length direction.

[0067] In this embodiment, the hot melt adhesive is arranged at intervals in the width direction for intermittently bonding the inner non-woven fabric 21 and the pulp fiber sheet 23, so that the inner non-woven fabric 21 can be shaped, and regular wrinkles are formed on one side of the outer package 20 on the skin side as the waist elastic line 24 expands and contracts, forming a plurality of air permeable channels and improving the comfort of the product.

[0068] In this embodiment, the outer non-woven fabric 22 and the pulp fiber sheet 23 are joined by continuous or intermittent second bonding portions G2, and the second bonding portions G2 can be realized by any method known in the art, such as using hot melt adhesives, hot pressing and ultrasonic methods. The bonding strength can be adjusted by the bonding area or by ultrasonic energy.

[0069] In this embodiment, the second bonding portions G2 are realized by using hot melt adhesives. Specifically, at least one of the outer non-woven fabric 22 and the pulp fiber sheet 23 is coated with a hot melt adhesive, or both the outer non-woven fabric 22 and the pulp fiber sheet 23 are coated with a hot melt adhesive, and the outer non-woven fabric 22 and the pulp fiber sheet 23 are joined to each other through continuous or intermittent second bonding portions G2.

[0070] Preferably, at least one of the outer non-woven fabric 22 and the pulp fiber sheet 23 is coated with a hot melt adhesive, and the hot melt adhesive is coated on at least one of the outer non-woven fabric 22 and the pulp fiber sheet 23 at intervals or continuously along the length direction.

[0071] In this embodiment, the hot melt adhesive is arranged at intervals in the width direction for intermittently bonding the pulp fiber sheet 23 and the outer non-woven fabric 22, so that the outer non-woven fabric 23 can be shaped, and regular concave and convex wrinkles are formed on one side of the outer package 20 on the non-skin side as the waist elastic line 24 expands and contracts, having a good appearance.

[0072] In some embodiments, the inner non-woven fabric 21 and the outer non-woven fabric 22 of the outer package 20 extend from the front waist B1 and the abdomen B2, through the crotch B3, to the buttocks B4 and the back waist B5. Between the front waist B1 and the abdomen B2, and between the buttocks B4 and the back waist B5, the pulp fiber sheet 23 is arranged between the inner non-woven fabric 21 and the outer non-woven fabric 22. Along the thickness direction, a plurality of waist elastic lines 24 extending in the width direction are arranged between the outer non-woven fabric 22 and the pulp fiber sheet 23. The inner non-woven fabric 21 and the pulp fiber sheet 23 are joined to each other, and the outer non-woven fabric 22 and the pulp fiber sheet 23 are joined to each other.

[0073] According to an embodiment of the present utility model, the waist elastic line 24 is a linear spandex yarn, and the waist elastic line 24 has an average decitex of 10 dtex to 400 dtex. Along the length direction, the ply spacing between two adjacent waist elastic lines 24 is 0.2 mm to 8 mm; in the front waist B1 and abdomen B2, as well as the buttocks B4 and rear waist B5, along the length direction, the size D of the pulp fiber sheet 23 is 100 mm to 300 mm; along the length direction, the pulp fiber sheet 23 covers the waist elastic line 24, as Figure 2 .

[0074] In this embodiment, the waist elastic line 24 is a bundle of fibers formed by compounding multiple individual fibers. The number of individual fibers of each waist elastic line 24 is less than 40, preferably less than 35.

[0075] The inner non-woven fabric 21 and the outer non-woven fabric 22 of the present utility model are non-woven fabric materials, such as any one of hot air non-woven fabric, spunlace non-woven fabric, and spunbond non-woven fabric. Along the width direction, the stretching ratio range of the outer package 20 is 2 to 3.5 times; the grammage of the non-woven fabric used for the inner non-woven fabric 21 and the outer non-woven fabric 22 is 5 g / m 2 ~70 g / m 2 , preferably 8 g / m 2 ~45 g / m 2 . The grammage of the non-woven fabric used for the inner non-woven fabric 21 and the outer non-woven fabric 22 of the present utility model is set within the above range, and combined with the physical properties of the waist elastic line 24 and the pulp fiber sheet 23 itself, the prepared outer package 20 is thinner, softer, and has better flatness.

[0076] The pulp fiber sheet 23 of the present utility model is pulp or a paper material formed from a material mainly composed of pulp, such as blotting paper, toilet paper, and wet strength paper. The proportion of pulp fibers in the pulp fiber sheet is preferably more than 80%, and the grammage of the pulp fiber sheet 23 is between 5 and 20 g / m 2 , preferably 8 to 14 g / m 2 , and the light transmittance of the pulp fiber sheet 23 is less than that of the outer non-woven fabric 22 or the inner non-woven fabric 21; in addition, the pulp fiber sheet is preferably a soft pulp fiber sheet, including but not limited to a soft pulp fiber sheet made by adding a softening agent or through a softening treatment device, etc.

[0077] As Figure 4 shown, Figure 4 in (a) is a photo of the pulp fiber sheet 23 at twice the magnification, Figure 4 in (b) is a photo of the inner non-woven fabric 21 or the outer non-woven fabric 22 of the non-woven fabric material at twice the magnification.

[0078] AsFigure 5 As shown Figure 5 (c) in the figure is a photo of the pulp fiber sheet 23 at a five - fold magnification, Figure 5 (d) in the figure is a photo of the inner non - woven fabric 21 or the outer non - woven fabric 22 of the non - woven material at a five - fold magnification.

[0079] Combined with Figure 4 and Figure 5 it can be seen that the fiber arrangement of the pulp fiber sheet 23 is relatively dense (compared with the inner non - woven fabric 21 or the outer non - woven fabric 22 of the non - woven material), with fewer voids and lower light transmittance.

[0080] Such as Figure 4 and 5 , because the fiber arrangement of the pulp fiber sheet 23 is relatively dense (compared with the inner non - woven fabric or the outer non - woven fabric), and because the light transmittance of the pulp fiber sheet 23 is less than that of the outer non - woven fabric 22 or the inner non - woven fabric 21; therefore, it is not easy to see the waist elastic line 24 from the non - skin side inward, achieving the effect of covering the waist elastic line 24 (the trace of the waist elastic line 24 cannot be seen), improving the aesthetics; and because the fibers of the pulp fiber sheet 23 are relatively dense and there are fewer voids, to a certain extent, the problem of glue seepage occurring in the process of manufacturing the short - pants - type absorbent article is solved.

[0081] Along the width direction, the elongation at break of the pulp fiber sheet 23 is 10% - 60%, and the elongation at break of the inner non - woven fabric 21 or the outer non - woven fabric 22 is 40% - 150%; the elongation at break of the inner non - woven fabric 21 or the outer non - woven fabric 22 is greater than that of the pulp fiber sheet 23. The softness and elasticity of the pulp fiber sheet 23 are weaker than those of the inner non - woven fabric 21 or the outer non - woven fabric 22. After adding the pulp fiber sheet 23, the stiffness of the outer package 20 of the absorbent article is improved to a certain extent, making the outer package 20 flatter.

[0082] In addition, since the main component of the pulp fiber sheet 23 is cellulose, and there are a large number of hydrophilic groups such as hydroxyl groups inside the cellulose molecule, which can form hydrogen bonds with water molecules in sweat. Therefore, the addition of the pulp fiber sheet 23 enables the outer package 20 to play a better moisture absorption and sweat - discharging function, making the short - pants - type absorbent article have a good air - permeability effect, reducing the sense of stuffiness and being more comfortable to wear.

[0083] In a preferred embodiment, the tensile strength is 1 to 10 N / mm, and the elastic modulus is 10 to 50 Mpa; along the width direction, the tensile force of the pulp fiber sheet 23 is 4500 to 6000 mN / 15 mm; along the length direction, the tensile force of the pulp fiber sheet 23 is 1000 to 4000 mN / 15 mm; along the width direction, the elongation at break of the pulp fiber sheet 23 is 10% to 60%, so as to have a certain strength while ensuring the softness of the outer package 20 and prevent breakage during the stretching process of wearing.

[0084] Combined Figure 1 with Figure 3 , according to an embodiment of the present invention, in the front waist B1, abdomen B2, hip B4 and rear waist B5, the outer package 20 includes a waist stretching part C2 extending along the width direction, and outer fixing parts C1 arranged on both sides of the waist stretching part C2, and the outer fixing parts C1 at least partially overlap with the side sealing part 30.

[0085] Specifically, along the width direction, in the front waist B1, abdomen B2, hip B4 and rear waist B5, the outer package 20 is divided into an outer fixing part C1 and a waist stretching part C2 from both sides along the width direction to the central area. The outer fixing part C1 is located on both sides of the waist stretching part C2, the waist stretching part C2 is located between the two outer fixing parts C1, and the outer fixing part C1 at least partially overlaps with the side sealing part 30.

[0086] In the outer fixing part C1, multiple waist elastic lines 24 are fixed to the inner non-woven fabric 21, the pulp fiber sheet 23 and the outer non-woven fabric 22. Specifically, multiple waist elastic lines 24 can be fixed to the inner non-woven fabric 21, the pulp fiber sheet 23 and the outer non-woven fabric 22 by hot melt adhesive, hot pressing or ultrasonic methods.

[0087] In some embodiments, the outer fixing part C1 is provided with an end strengthening part 31. Multiple waist elastic lines 24 are fixed to the inner non-woven fabric 21, the pulp fiber sheet 23 and the outer non-woven fabric 22 through the end strengthening part 31.

[0088] Combined Figure 1 with Figure 3 , according to an embodiment of the present invention, in the abdomen B2 and hip B4, the outer package 20 further includes an inner fixing part C3 and an elastic weakening part C4.

[0089] The elastic weakening part C4 is located in the overlapping area of the absorbent main body 10 and the outer package 20, and the inner fixing part C3 is located on both sides of the elastic weakening part C4 along the width direction.

[0090] In the present utility model, a plurality of waist elastic lines 24 are arranged between a pair of outer fixing parts C1 on both sides in the width direction at least at the front waist B1 and the back waist B5. At least at the abdomen B2 and the buttocks B4, a plurality of waist elastic lines 24 are arranged between the outer fixing part C1 and the inner fixing part C3.

[0091] At the inner fixing part C3, the plurality of waist elastic lines 24 are fixed to the inner non-woven fabric 21, the pulp fiber sheet 23 and the outer non-woven fabric 22. Specifically, at the inner fixing part C3, the plurality of waist elastic lines 24 can be fixed to the inner non-woven fabric 21, the pulp fiber sheet 23 and the outer non-woven fabric 22 by means of hot melt adhesive, hot pressing or ultrasonic waves, so as to prevent the waist elastic lines 24 from retracting along both sides in the width direction after being cut off at the elastic weakening part C4 and then retracting into the inner fixing area C3.

[0092] In the present utility model, no waist elastic line 24 is arranged in the area of the elastic weakening part C4, or a plurality of waist elastic lines 24 arranged in the area of the elastic weakening part C4 are cut off, and the cut-off waist elastic lines 24 are in a state of no elastic stress at the elastic weakening part C4, so as to prevent the absorbent main body 10 from generating wrinkles in the width direction and ensure the flatness of the absorbent main body 10.

[0093] Combined Figure 1 and Figure 3 According to an embodiment of the present utility model, the outer non-woven fabric 22 of the outer package 20 is turned over to the side of the skin of the absorbent main body 10 at both ends in the length direction, forming a turned-over part 21a. The turned-over part 21a covers part of the inner non-woven fabric 21 and covers both ends of the absorbent main body 10, thereby preventing the absorbent main body 10 from leaking at the end due to expansion after absorbing liquid.

[0094] At the front waist B1 and the back waist B5, the outer package 20 is provided with end elastic lines 25 extending in the width direction and arranged at intervals in the length direction. The end elastic lines 25 are arranged between the turned-over part 21a and the inner non-woven fabric 21 to provide elasticity to the wearer at the front waist B1 and the back waist B5.

[0095] Combined Figure 1 and Figure 3 According to an embodiment of the present utility model, the outer package 20 further includes leg elastic lines 26 with an arc curve extending from the abdomen B2 to the crotch B3 and from the buttocks B4 to the crotch B3. At the abdomen B2 and the buttocks B4, the leg elastic lines 26 extend to the outer fixing part C1, and in the thickness direction, the leg elastic lines 26 partially overlap with the pulp fiber sheet 23.

[0096] The leg elastic line 26 is disposed between the inner nonwoven fabric 21 and the outer nonwoven fabric 22. Specifically, the leg elastic line 26 is fixed between the inner nonwoven fabric 21 and the outer nonwoven fabric 22 through the third bonding portion G3, and the third bonding portion G3 is a hot melt adhesive; the leg elastic line 26 extends to the outer fixing portion C1 in the abdominal region B2 and the hip region B4 respectively. The outer periphery of the leg elastic line 26 is coated with a hot melt adhesive. Since the pulp fiber sheet 23 is provided in the abdominal region B2 and the hip region B4, to a certain extent, the influence of the glue leakage on the strength of the side seal portion 30 formed by ultrasonic sealing at the outer fixing portion C1 is reduced.

[0097] The arc curve of the leg elastic line 26 matches the curve of the leg circumference line 20a, making the two leg openings formed by the short pants type absorbent article more conform to the leg contour of the wearer and preventing excrement from leaking from the two leg openings.

[0098] Embodiment 2.

[0099] The difference between this embodiment and Embodiment 1 is that the inner nonwoven fabric 21 of the outer package 20 is disposed at the front waist portion B1, the abdominal region B2, the hip region B4, and the rear waist portion B5; along the thickness direction, a plurality of waist elastic lines extending in the width direction are disposed on both sides of the pulp fiber sheet 23.

[0100] Combined Figure 6 and Figure 7 , in this embodiment, the inner nonwoven fabric 21 of the outer package 20 is disposed at the front waist portion B1, the abdominal region B2, the hip region B4, and the rear waist portion B5. The outer nonwoven fabric 22 of the outer package 20 extends from the front waist portion B1 and the abdominal region B2, through the crotch portion B3, to the hip region B4 and the rear waist portion B5. In the front waist portion B1, the abdominal region B2, the hip region B4, and the rear waist portion B5, the pulp fiber sheet 23 is disposed between the inner nonwoven fabric 21 and the outer nonwoven fabric 22.

[0101] Along the thickness direction, a plurality of waist elastic lines extending in the width direction are disposed on both sides of the pulp fiber sheet 23. That is, along the thickness direction, a plurality of first waist elastic lines 241 extending in the width direction are disposed between the inner nonwoven fabric 21 and the pulp fiber sheet 23, and a plurality of second waist elastic lines 242 extending in the width direction are disposed between the outer nonwoven fabric 22 and the pulp fiber sheet 23. The inner nonwoven fabric 21 and the pulp fiber sheet 23 are joined to each other, and the outer nonwoven fabric 22 and the pulp fiber sheet 23 are joined to each other.

[0102] Along the thickness direction, the arrangement modes of the first waist elastic line 241 and the second waist elastic line 242 can correspond to each other one by one or can be staggered with each other.

[0103] In this embodiment, the inner non-woven fabric 21 and the pulp fiber sheet 23 are joined by continuous or discontinuous first bonding portions G1, and the first bonding portions G1 can be realized by any method known in the art, such as using hot melt adhesives, hot pressing, and ultrasonic methods. The bonding strength can be adjusted by the bonding area or by ultrasonic energy.

[0104] In this embodiment, the first bonding portions G1 are realized by using hot melt adhesives. Specifically, the outer periphery of the first waist elastic line 241 is coated with hot melt adhesive, or at least one of the inner non-woven fabric 21 and the pulp fiber sheet 23 is coated with hot melt adhesive, or all of the first waist elastic line 241, the inner non-woven fabric 21, and the pulp fiber sheet 23 are coated with hot melt adhesive. The inner non-woven fabric 21 and the pulp fiber sheet 23 are joined to each other by continuous or discontinuous first bonding portions G1, and multiple first waist elastic lines 241 extending in the width direction are arranged between the inner non-woven fabric 21 and the pulp fiber sheet 23.

[0105] In this embodiment, the outer non-woven fabric 22 and the pulp fiber sheet 23 are joined by continuous or discontinuous second bonding portions G2, and the second bonding portions G2 can be realized by any method known in the art, such as using hot melt adhesives, hot pressing, and ultrasonic methods. The bonding strength can be adjusted by the bonding area or by ultrasonic energy.

[0106] In this embodiment, the second bonding portions G2 are realized by using hot melt adhesives. Specifically, the outer periphery of the second waist elastic line 242 is coated with hot melt adhesive, or at least one of the outer non-woven fabric 22 and the pulp fiber sheet 23 is coated with hot melt adhesive, or all of the second waist elastic line 242, the outer non-woven fabric 22, and the pulp fiber sheet 23 are coated with hot melt adhesive. The outer non-woven fabric 22 and the pulp fiber sheet 23 are joined to each other by continuous or discontinuous second bonding portions G2, and multiple first waist elastic lines 241 extending in the width direction are arranged between the outer non-woven fabric 22 and the pulp fiber sheet 23.

[0107] Further, the outer periphery of the first waist elastic line 241 is coated with hot melt adhesive, and the inner non-woven fabric 21 and the pulp fiber sheet 23 are joined by continuous or discontinuous first bonding portions G1; the outer periphery of the second waist elastic line 242 is coated with hot melt adhesive, and the outer non-woven fabric 22 and the pulp fiber sheet 23 are joined by continuous or discontinuous second bonding portions G2.

[0108] At the inner fixing portion C3, multiple first waist elastic lines 241, the inner non-woven fabric 21, and the pulp fiber sheet 23 are joined by a fourth bonding portion G4; multiple second waist elastic lines 242, the outer non-woven fabric 22, and the pulp fiber sheet 23 are joined by the fourth bonding portion G4, preventing the first waist elastic line 241 and the second waist elastic line 242 from retracting further along both sides in the width direction after retracting to the inner fixing area C3 after being cut at the elastic weakening portion C4.

[0109] As Figure 7 shown, according to an embodiment of the present utility model, the outer package body 20 further includes a covering layer sheet 27 extending along the length direction. In the abdomen B2 and the buttocks B4, the covering layer sheet 27 at least partially overlaps with the inner non-woven fabric 21.

[0110] The outer package body 20 further includes leg elastic threads 26 with an arcuate curve extending from the abdomen B2 to the crotch B3 and from the buttocks B4 to the crotch B3. In the abdomen B2 and the buttocks B4, the leg elastic threads 26 extend to the outer fixing part C1, and in the thickness direction, the leg elastic threads 26 partially overlap with the pulp fiber sheet 23.

[0111] The leg elastic threads 26 are arranged between the covering layer sheet 27 and the outer non-woven fabric 22. Specifically, the leg elastic threads 26 are fixed between the covering layer sheet 27 and the outer non-woven fabric 22 through a third bonding part G3, and the third bonding part G3 is a hot melt adhesive. Similarly, the leg elastic threads 26 extend to the outer fixing part C1 in the abdomen B2 and buttocks B4 regions respectively, and the outer periphery of the leg elastic threads 26 is coated with a hot melt adhesive. Since the pulp fiber sheet 23 is provided in the abdomen B2 and the buttocks B4, to a certain extent, the influence of glue leakage on the strength of the side seal part 30 formed by ultrasonic sealing at the outer fixing part C1 is reduced.

[0112] The other structures of this embodiment are the same as those of the first embodiment and will not be elaborated here.

[0113] The following points need to be explained:

[0114] (1) The attached drawings of the embodiments of the present utility model only relate to the structures involved in the embodiments of the present utility model, and other structures can refer to the general design.

[0115] (2) For clarity, in the attached drawings used to describe the embodiments of the present utility model, the thickness of the layer or region is enlarged or reduced, that is, these attached drawings are not drawn according to the actual ratio. It can be understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "under" another element, the element can be "directly" on or under the other element or there can be an intermediate element.

[0116] (3) Without conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other to obtain new embodiments.

[0117] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. The protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A short-pant type absorbent article, characterized in that, The short-pants type absorbent article has a length direction, a width direction, and a thickness direction that are orthogonal to each other; In the length direction, the short-pants type absorbent article has a front waist portion disposed on the front waist side of the wearer, an abdomen portion disposed on the ventral side of the wearer, a buttocks portion disposed on the posterior buttocks of the wearer, a rear waist portion disposed on the dorsal side of the wearer, and a crotch portion disposed between the abdomen and the buttocks; In the length direction, the short-pants type absorbent article has an opposing front body portion and rear body portion; Along the thickness direction, the short-pants type absorbent article has a skin side that contacts the wearer's skin and a non-skin side that is away from the skin; The short-pants type absorbent article includes an outer package body and an absorbent main body connected to one skin side surface of the outer package body; The front body portion and the rear body portion are folded in half along the length direction. Along the width direction, both side edges of the outer package body at the front waist and the abdomen are respectively joined to both side edges of the outer package body at the buttocks and the rear waist to form side seal portions, so that the short-pants type absorbent article forms a waist opening and two leg openings; Wherein, the outer package body includes an inner non-woven fabric, an outer non-woven fabric, a pulp fiber sheet, and waist elastic threads. The inner non-woven fabric is disposed on one skin side surface, and the outer non-woven fabric is disposed on one non-skin side surface; The pulp fiber sheet is disposed between the inner non-woven fabric and the outer non-woven fabric; the pulp fiber sheet is located at the front waist and the abdomen, as well as the buttocks and the rear waist. In the crotch portion of the outer package body, the pulp fiber sheet is not provided; Along the thickness direction, at least on one side of the pulp fiber sheet, a plurality of waist elastic threads extending in the width direction are disposed; wherein, the waist elastic threads have an average decitex of 10 dtex to 400 dtex; along the length direction, the strand spacing between two adjacent waist elastic threads is 0.2 mm to 8 mm; The inner non-woven fabric and the pulp fiber sheet are joined to each other, and the outer non-woven fabric and the pulp fiber sheet are joined to each other.

2. The short-pants type absorbent article according to claim 1, wherein, The basis weight of the pulp fiber sheet is between 5 and 20 g / m 2 ; in the front waist and abdomen, and in the buttocks and back waist, along the length direction, the size of the pulp fiber sheet is 100 mm to 300 mm, and the pulp fiber sheet covers the waist elastic line.

3. The short-pant type absorbent article according to claim 1, wherein The light transmittance of the pulp fiber sheet is less than that of the outer non-woven fabric or the inner non-woven fabric; Along the width direction, the elongation at break of the pulp fiber sheet is 10% to 60%, and the elongation at break of the inner non-woven fabric or the outer non-woven fabric is 40% to 150%; and the elongation at break of the inner non-woven fabric or the outer non-woven fabric is greater than that of the pulp fiber sheet.

4. The short-pants type absorbent article according to claim 1, wherein, Along the width direction, the draw ratio of the outer package body is 2 to 3.5 times.

5. The short-pants type absorbent article according to claim 1, wherein, Both ends of the outer non-woven fabric of the outer package body along the length direction are folded over to the side of the skin side of the absorbent main body to form folded portions; The folded portions cover part of the inner non-woven fabric and cover both ends of the absorbent main body.

6. The short-pants type absorbent article according to claim 5, wherein At the front waist and the rear waist, the outer package body is provided with end elastic threads extending in the width direction and arranged at intervals along the length direction; The end elastic threads are disposed between the folded portions and the inner non-woven fabric.

7. The short-pants type absorbent article according to claim 1, wherein, The inner non-woven fabric and the outer non-woven fabric of the outer package body extend from the front waist and the abdomen, through the crotch portion, to the buttocks and the rear waist; Along the thickness direction, a plurality of the waist elastic threads extending in the width direction are disposed between the inner non-woven fabric and the pulp fiber sheet.

8. The short-pants type absorbent article according to claim 1, wherein, The inner non-woven fabric and the outer non-woven fabric of the outer package extend from the front waist and abdomen, through the crotch, to the buttocks and the rear waist; In the thickness direction, a plurality of the waist elastic lines extending in the width direction are arranged between the outer non-woven fabric and the pulp fiber sheet.

9. The short-pant type absorbent article according to claim 7 or 8, wherein The outer package includes a waist stretchable portion extending in the width direction and outer fixing portions arranged on both sides of the waist stretchable portion; The outer package further includes leg elastic lines in an arc curve extending from the abdomen to the crotch and from the buttocks to the crotch; at the abdomen and the buttocks, the leg elastic lines extend to the outer fixing portions, and in the thickness direction, the leg elastic lines partially overlap with the pulp fiber sheet; The leg elastic lines are arranged between the inner non-woven fabric and the outer non-woven fabric.

10. The short-pant type absorbent article according to claim 1, wherein, The inner non-woven fabric of the outer package is arranged at the front waist and abdomen, and the buttocks and the rear waist; In the thickness direction, a plurality of first waist elastic lines extending in the width direction are arranged between the inner non-woven fabric and the pulp fiber sheet; And, a plurality of second waist elastic lines extending in the width direction are arranged between the outer non-woven fabric and the pulp fiber sheet.

11. The short-pants type absorbent article according to claim 10, wherein The outer package further includes a covering sheet extending in the length direction; At the abdomen and the buttocks, the covering sheet at least partially overlaps with the inner non-woven fabric.

12. The short-pant type absorbent article according to claim 11, wherein The outer package includes a waist stretchable portion extending in the width direction and outer fixing portions arranged on both sides of the waist stretchable portion; The outer package further includes leg elastic lines in an arc curve extending from the abdomen to the crotch and from the buttocks to the crotch; at the abdomen and the buttocks, the leg elastic lines extend to the outer fixing portions, and in the thickness direction, the leg elastic lines partially overlap with the pulp fiber sheet; The leg elastic lines are arranged between the covering sheet and the outer non-woven fabric.

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