Outward-turning type air partition edge and absorption article with outward-turning type air partition edge

Abstract

The utility model relates to the field of disposable hygienic products, in particular to an outwards-turned air partition edge and an absorption article thereof, and solves the problem that the softness of an existing partition edge structure is insufficient. Comprising a water-repellent material layer of a strip-shaped structure and a plurality of strip-shaped elastic bodies arranged in the length direction of the water-repellent material layer in an extending mode, the water-repellent material layer is folded once in the transverse direction of the water-repellent material layer and wraps and fixes the strip-shaped elastic bodies, and the water-repellent material layer is folded twice in the transverse direction and adheres to the strip-shaped elastic bodies. And a bonding part extending along the longitudinal direction and an unbonded hollow ventilation channel are formed.

Description

Technical Field

[0001] This utility model relates to the field of disposable hygiene products, specifically to an outward-turned air vent and its absorbent material. Background Art

[0002] Existing disposable hygiene products, taking diapers as an example, generally consist of an upper surface layer, a breathable but liquid-proof lower layer, and an absorbent core sandwiched between the two. The absorbent core is the main component for absorbing liquids. In this traditional structure, to prevent side leakage during wear, leak-proof side panels extending along the length of the absorbent core are usually installed on the surface layer on both sides. The basis of this leak-proof structure is that the elastic element is wrapped with a liquid-repellent material, so that when the diaper is worn, the material stands up due to the contraction of the elastic element, forming an upright barrier structure. However, because the elastic element is mostly made of a large denier, this structure often causes friction or marks at the groin area of ​​the baby, resulting in insufficient comfort. To alleviate this situation, structures designed to address the issue have emerged in the market. For example, Chinese Patent No. CN 219423149U describes an absorbent product with a bubble-shaped three-dimensional partition. The inner side is the side that fits against the body when worn, and the outer side is the side away from the body. From the inside out, an absorbent main body and an absorbent outer layer are arranged sequentially. Bubble-shaped three-dimensional partitions are symmetrically arranged on both sides of the absorbent main body, inside the absorbent outer layer. The partition body on either side is composed of a folded, layered, water-repellent non-woven fabric. The outer surface of the partition body on the side furthest from the absorbent main body is compositely connected to the absorbent outer layer. A breathable layer is sandwiched within the partition body. One surface of the breathable layer is connected to the inner surface of one side of the partition body, while the other side is bonded to the inner surface of the other side of the absorbent main body via at least three intermittently distributed strips of elastic material, stretched to the same length as the breathable layer. At least two bubble cavities are enclosed between the partition body, the strips of elastic material, and the breathable layer.

[0003] The underlying structure incorporates a breathable layer that creates so-called bubble cavities as the elastic element retracts, thereby improving the softness of the spacer. However, this additional layer increases the thickness of the original spacer, offering limited improvement in softness, and the increased thickness also leads to a decrease in breathability. Utility Model Content

[0004] Therefore, this utility model provides an outward-turned air vent and its absorbent material, which solves the problem of insufficient flexibility in existing vent structures.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] An outward-folding air gap includes a strip-shaped water-repellent material layer and a plurality of strip-shaped elastomers extending along the length of the water-repellent material layer. The water-repellent material layer is folded once in the transverse direction to wrap and fix each of the strip-shaped elastomers. The water-repellent material layer is folded twice in the transverse direction and bonded together to form a bonded portion extending in the longitudinal direction and an unbonded hollow air-permeable channel.

[0007] Preferably, the longitudinal length of the adhesive portion is 30-60 mm.

[0008] Preferably, the longitudinal length of the adhesive portion is 40 mm.

[0009] Preferably, the strip-shaped elastomer comprises 4-10 strips.

[0010] Preferably, the spacing between each of the strip-shaped elastomers is 0.5-3 mm.

[0011] An absorbent article using the above-mentioned outward-folding air septum includes a liquid-permeable surface layer, an absorbent core layer, and a liquid-impermeable bottom layer stacked together. The absorbent article is divided into a front waist area, a crotch area, and a back waist area according to the position of the human body when wearing it. Two air septums are symmetrically arranged along the transverse center of the liquid-permeable surface layer. The adhesive part of the two air septums and the hollow ventilation channel are located in the crotch area. The longitudinal ends of the two air septums are folded outward along the transverse direction of the absorbent article and glued and fixed.

[0012] Preferably, the fold width at the longitudinal ends of the two air gaps is 20-35 mm.

[0013] By adopting the aforementioned technical solution, the beneficial effects of this utility model are:

[0014] This technical solution improves upon the traditional leak-proof side panel structure by designing a secondary folding and fixing mechanism located at the center of the leak-proof side panel. After folding, the panel is bonded to form a hollow, breathable channel extending longitudinally. This hollow, breathable channel extends forward and backward to cover and absorb the crotch area of ​​the item. This structural design achieves a softer touch without changing the sheet material and structure of the traditional leak-proof side panel, and increases the contact area between the side panel and the baby's skin when wearing it. Thus, without increasing the thickness of the side panel layer, the leak-proof effect is guaranteed, and the hollow, breathable channel also improves comfort during use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the forming process of the partition edge in an embodiment of this utility model;

[0016] Figure 2 This is a schematic diagram of the unfolded structure of the absorbent article in an embodiment of the present utility model;

[0017] Figure 3for Figure 2 Schematic diagram of the cross-sectional structure along the AA direction.

[0018] Reference numerals: 1. Water-repellent material layer; 11. Adhesive part; 12. Hollow air-permeable channel; 2. Strip-shaped elastomer; 100. Liquid-permeable surface layer; 200. Absorbent core layer; 300. Liquid-impermeable bottom layer; 400. Air barrier edge. DETAILED DESCRIPTION

[0019] The following will describe the implementation of this utility model in detail with reference to specific embodiments, so that the process of how this utility model uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0020] Example

[0021] refer to Figure 1 An outward-folding air gap 400 includes a strip-shaped water-repellent material layer 1 and a plurality of strip-shaped elastomers 2 extending along the length of the water-repellent material layer 1. The water-repellent material layer 1 is folded once in its transverse direction to wrap and fix each of the strip-shaped elastomers 2. The water-repellent material layer 1 is folded twice in its transverse direction and bonded together to form a bonded portion 11 extending longitudinally and an unbonded hollow air-permeable channel 12. Structurally, the strip-shaped elastomers 2 can be located outside the second fold position or inside the fold position. The difference between the two is that the deformation of the hollow air-permeable channel 12 caused by the contraction of the strip-shaped elastomers 2 is different. This embodiment adopts the design of being located inside the fold position. This allows the hollow air-permeable channel 12 after folding to have an irregular "bubble" gap shape.

[0022] Structurally, the longitudinal length a of the adhesive part 11 is 40 mm to ensure that a structure covering the entire crotch area of ​​the absorbent item is formed; however, when the product model or type is different, the longitudinal length of the adhesive part 11 can be adjusted to any value between 30 and 60 mm.

[0023] The strip-shaped elastomer 2 is made of fine denier spandex yarn, specifically 105D. The spacing between each strip-shaped elastomer 2 is 0.5 mm. When using different specifications, this spacing can be adjusted accordingly, specifically any value between 0.5 and 3 mm. There can be 4 to 10 strip-shaped elastomers. The goal is to ensure sufficient standing height and elasticity to maintain the standing state within the width of the spacer. This technical solution improves upon the traditional leak-proof side panel structure by designing a secondary folding and fixing mechanism located at the center of the leak-proof side panel. After folding, the panel is bonded to form a hollow, breathable channel 12 extending longitudinally. The hollow, breathable channel 12 extends forward and backward to cover and absorb the crotch area of ​​the item. This structural design achieves a softer feel without changing the sheet material and structure of the traditional leak-proof side panel, and increases the contact area between the side panel and the skin when the baby wears it. Thus, without increasing the thickness of the side panel layer, the leak-proof effect is guaranteed, and the hollow, breathable channel 12 also improves the comfort during use.

[0024] Also refer to Figure 2 , Figure 3 This is an absorbent article using the aforementioned outward-folding air vent 400, comprising a layered liquid-permeable surface layer 100, an absorbent core layer 200, and a liquid-impermeable bottom layer 300. The absorbent article is divided into a front waist area, a crotch area, and a back waist area according to the position of the wearer when wearing it. Two air vents 400 are symmetrically arranged along the transverse center of the liquid-permeable surface layer 100. The adhesive portion 11 of the two air vents 400 and the hollow ventilation channel 12 are located in the crotch area. The longitudinal ends of the two air vents 400 are folded outward along the transverse direction of the absorbent article and glued and fixed. Specifically, the folding width b of the longitudinal ends of the two air vents 400 is 20-35 mm, so that the longitudinal ends of the entire air vent 400 are folded outward, and the fixed position of the two air vents 400 and the cross-section of the air vent 400 between the hollow ventilation channel 12 form an "eight" shape transition.

[0025] Here, the structure of the absorbent differs from that shown in the prior art CN 219423149 U. The longitudinal ends of the air spacer 400 form an outward-folding structure, which allows the two longitudinal ends of the air spacer 400 to combine with the hollow ventilation channel 12 at the center. This not only forms an outward-folding structure that extends the entire air spacer 400, thereby increasing the contact area between the entire air spacer 400 and the human skin, but also reduces the deformation of the adhesive structure at the center when the air spacer 400 is fixed to the liquid-permeable surface layer 100, ensuring the structural stability of the adhesive part 11 and the formed hollow ventilation channel 12.

[0026] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. An outward-flaring air gap, characterized in that: It includes a strip-shaped water-repellent material layer (1) and a plurality of strip-shaped elastomers (2) extending along the length of the water-repellent material layer (1). The water-repellent material layer (1) is folded once in the transverse direction and wrapped and fixed each of the strip-shaped elastomers (2). The water-repellent material layer (1) is folded twice in the transverse direction and bonded to form a bonded part (11) extending in the longitudinal direction and an unbonded hollow air-permeable channel (12).

2. The outward-flaring air gap according to claim 1, characterized in that: The longitudinal length of the adhesive portion (11) is 30-60 mm.

3. The outward-flaring air vent according to claim 2, characterized in that: The longitudinal length of the adhesive portion (11) is 40 mm.

4. The outward-flaring air gap according to claim 1, characterized in that: The strip-shaped elastomer (2) consists of 4-10 strips.

5. The outward-flaring air gap according to claim 1, characterized in that: The spacing between each of the strip-shaped elastomers (2) is 0.5-3 mm.

6. An absorbent article employing the outward-flaring air gap as described in claim 1, comprising a liquid-permeable surface layer (100), an absorbent core layer (200), and a liquid-impermeable bottom layer (300) stacked together, characterized in that: The absorbent material is divided into a front waist area, a crotch area, and a back waist area according to the position of the human body when wearing it. Two air gaps (400) are symmetrically arranged along the transverse center of the liquid-permeable surface layer (100). The adhesive part (11) of the two air gaps (400) and the hollow air-permeable channel (12) are located in the crotch area. The longitudinal ends of the two air gaps (400) are folded and glued to the outside of the absorbent material in the transverse direction.

7. An absorbent article with an outwardly flared air septum according to claim 6, characterized in that: The fold width of the longitudinal ends of the two air gaps (400) is 20-35 mm.

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