Novel folding curve channel type absorber sheet and product thereof

Abstract

The utility model relates to the field of disposable hygienic products, in particular to a novel folding curve channel type absorber sheet which comprises an absorption layer and an upper cover layer covering the upper end face of the absorption layer, and the absorption layer is composed of base cloth and liquid absorption materials attached to the base cloth. The two sides of the absorption layer are cut in an S mode to form side portions of a wave curve structure, the two side portions are folded upwards and close to each other to form a wave curve-shaped groove which is located in the center of the absorption layer and used for diversion, and the upper cover layer covers the surface of the groove to fix the two side portions. The utility model solves the problem of infiltration rate of the existing absorption core body.

Description

Technical Field

[0001] The utility model relates to the field of disposable sanitary products, in particular to a novel folded curve channel type absorbent sheet and a product thereof. Background Art

[0002] The absorbent core is an important component of disposable sanitary products. Its quality affects the absorbency, diffusivity, anti-reverse osmosis and other properties of the absorbent article. The traditional absorbent core is generally composed of fluff pulp or wood pulp fibers combined with high molecular water-absorbent resin particles. On this basis, there are absorbent core structures improved to meet different needs, such as the technical solution shown in Chinese patent CN103948471 A, an absorbent core, including an absorbent core surface layer, an absorbent core middle layer and an absorbent core bottom layer, the absorbent core surface layer is a mixture of a certain amount of fluff pulp fibers and a small amount of high molecular absorbent resin particles, the absorbent core middle layer is a mixture of a large amount of fluff pulp fibers and a large amount of high molecular absorbent resin particles, the absorbent core bottom layer is a certain amount of fluff pulp fibers, and the compactness of the absorbent core middle layer and the absorbent core bottom layer is greater than the compactness of the absorbent core surface layer.

[0003] However, the material cost of this structure is high, the diversion and infiltration rate cannot be further improved, and the core is thick and heavy. Utility Model Content

[0004] Therefore, the utility model provides a novel folded curve channel type absorbent sheet and its products, which solve the problem of the infiltration rate of the existing absorbent core.

[0005] In order to achieve the above object, the utility model is realized by the following technical solutions:

[0006] A novel folded curve channel absorbent sheet comprises an absorbent layer and an upper cover layer covering the upper end surface of the absorbent layer, wherein the absorbent layer is composed of a base fabric and a liquid-absorbing material attached to the base fabric, and the two sides of the absorbent layer are S-cut to form side portions with a wavy curve structure, and the two side portions are folded upward and close to each other to form a wavy curve-shaped guide groove located in the center of the absorbent layer, and the upper cover layer covers the surface of the groove to fix the two side portions.

[0007] Preferably, the absorption layer further comprises a covering layer covering the upper surface of the liquid-absorbing material, and the covering layer and the base fabric are sandwiched to support the liquid-absorbing material.

[0008] Preferably, the coating layer and the base fabric are made of toilet paper, and the liquid-absorbing material is composed of wood pulp, fluff pulp and high-molecular water-absorbing resin particles.

[0009] Preferably, the material of the coating layer is fluffy cloth, the material of the base cloth is dust-free paper, and the liquid-absorbing material is polymer water-absorbing resin particles.

[0010] Preferably, the base fabric is a fluffy fabric structure having a plush layer on the upper layer and a water-repellent bottom layer on the lower layer, and the liquid-absorbing material is high-molecular water-absorbing resin particles, and the liquid-absorbing material is embedded in the plush layer.

[0011] Preferably, the width of the groove is 0.1-20 mm.

[0012] Preferably, the material of the upper cover layer is spunlace cloth, toilet paper or fluffy cloth.

[0013] Preferably, after the upper cover layer is fixedly connected to the absorption layer, the edge of the upper cover layer does not extend beyond the two side edges of the absorption layer.

[0014] An absorbent product comprises a hydrophilic surface layer, an absorbent core layer and a water-repellent bottom layer, wherein the absorbent core layer adopts the absorbent sheet material.

[0015] By adopting the above technical solution, the beneficial effects of the utility model are:

[0016] This technical solution is different from the traditional absorbent core. The structure of the absorbent layer is improved. The two sides of the base fabric are folded after S-cutting to form a groove structure located in the center of the absorbent layer. The groove can form a three-dimensional diversion structure. The groove located in the middle forms a depression in the thickness direction, so that the groove can not only have a diversion effect but also greatly increase the infiltration rate, and the absorption is rapid and uniform. Structurally, unlike the multi-layer structure of the traditional absorbent core, this structure has a small thickness and is suitable for use with different absorbent articles. The composition of the liquid-absorbing material can be changed according to needs to adjust the product category to which it is applicable. It is widely applicable and flexible to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of the molding process of the absorbent sheet in Example 1 of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the molding process of the absorbent sheet from another perspective of the first embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the stacked structure of the absorbent sheet material in the second embodiment of the utility model (liquid-absorbing material is not shown).

[0020] Figure numerals: 1, absorption layer; 11, base fabric; 111, plush layer; 112, water-repellent bottom layer; 12, liquid-absorbent material; 1a, side portion; 13, groove; 14, covering layer; 2, upper cover layer. DETAILED DESCRIPTION

[0021] The following will describe the implementation methods of the present invention in detail in conjunction with specific embodiments, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0022] Embodiment 1

[0023] refer to Figure 1 and Figure 2 A novel folded curve channel absorbent sheet comprises an absorbent layer 1 and an upper cover layer 2 covering the upper end surface of the absorbent layer 1. The material of the upper cover layer 2 is spunlace cloth, toilet paper or fluffy cloth, etc., and the hydrophilic material can achieve absorption and infiltration. The present embodiment adopts spunlace cloth; the absorbent layer 1 is composed of a base fabric 11 and a liquid-absorbing material 12 attached to the base fabric 11. The two sides of the absorbent layer 1 are S-cut to form a side portion 1a of a wavy curve structure. The two side portions 1a are folded upward and close to each other to form a wavy curve-shaped guide groove 13 located in the center of the absorbent layer 1. The width of the groove 13 is 0.1-20 mm. The width here refers to the distance between the edges of the two side portions 1a after being folded. The width can be adjusted according to different products.

[0024] The upper cover layer 2 is covered on the surface of the groove 13 to fix the two side portions 1a. Specifically, when the upper cover layer 2 is fixed to the absorption layer 1, the edges of the upper cover layer 2 do not extend out of the two side edges of the absorption layer 1. With this design, the edges of the upper cover layer 2 will not extend out of the absorption layer 1 to ensure adhesion and avoid structural instability at the edge position.

[0025] This technical solution is different from the traditional absorbent core. The structure of the absorbent layer 1 is improved. The two sides of the base fabric 11 are S-cut and folded to form a groove 13 structure located in the center of the absorbent layer 1. The groove 13 can form a three-dimensional diversion structure. The groove 13 located in the middle forms a depression in the thickness direction, so that the groove 13 can not only have a diversion effect but also greatly increase the infiltration rate, and the absorption is rapid and uniform.

[0026] In this embodiment, the absorbent layer 1 further includes a covering layer 14 covering the upper surface of the liquid absorbent material 12, and the covering layer 14 and the base fabric 11 are sandwiched to support the liquid absorbent material 12. By adding the covering layer 14 at the upper end to cooperate with the base fabric 11, a two-way clamping and fixing of the liquid absorbent material 12 is formed, which is convenient for S-cutting and folding.

[0027] Specifically, according to different product requirements, the coating layer 14 and the liquid absorbing material 12 can be made of different materials, for example:

[0028] First, the material of the coating layer 14 and the base fabric 11 is toilet paper, and the liquid absorbing material 12 is composed of wood pulp, fluff pulp and polymer water-absorbing resin particles. Under this structure, the liquid absorbing material 12 is provided with wood pulp or fluff pulp, and the water-absorbing resin particles are matched. The wood pulp is more effective in absorbing menstrual blood, and is suitable for use in sanitary napkins, menstrual pants and other female absorbent articles.

[0029] Second, the material of the coating layer 14 is fluffy cloth, the material of the base cloth 11 is dust-free paper, and the liquid-absorbing material 12 is polymer water-absorbing resin particles. In this structure, the fluffy wiring clamps the polymer water-absorbing resin particles, the thickness of the structure is small, and it is also easy to produce, and is suitable for products with small absorption volume per unit area, such as daily sanitary napkins, nursing pads and other products.

[0030] In this technical solution, unlike the multi-layer structure of the traditional absorbent core, this structure has a small thickness and is suitable for use in different absorbent articles, and the composition of the liquid-absorbing material 12 can be changed according to needs to adjust the product category to which it is applicable, and it is widely applicable and flexible to use. The specific structure used can be a traditional absorbent product, including a hydrophilic surface layer, an absorbent core layer and a water-repellent bottom layer 112, and the absorbent core layer adopts the above-mentioned absorbent sheet. Under this basic structure, it can be used in similar products including diapers, sanitary napkins, comfort pants or nursing pads, which are not listed here one by one.

[0031] Embodiment 2

[0032] refer to Figure 3 Different from the first embodiment, this embodiment uses commercially available long-pile fluffy cloth. The base cloth 11 is a fluffy cloth structure with a plush layer 111 on the upper layer and a water-repellent bottom layer 112 on the lower layer. The water-repellent bottom layer 112 uses double-combed, water-impermeable material properties to maintain and support the liquid-absorbing material 12 to prevent leakage. The liquid-absorbing material 12 is a polymer water-absorbing resin particle, and the liquid-absorbing material 12 is embedded in the plush layer 111. Under the same conditions and parameters, this structure can reduce the cost of the core body of the composite molding by 5% to 15%. Under the premise of lower cost, the thickness is small, and the hand and body feel are better.

[0033] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes may be made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A novel folded curved channel absorbent sheet, characterized in that: The invention comprises an absorption layer (1) and an upper cover layer (2) covering the upper end surface of the absorption layer (1), wherein the absorption layer (1) is composed of a base fabric (11) and a liquid-absorbing material (12) attached to the base fabric (11), and two sides of the absorption layer (1) are cut to form side portions (1a) with a wave curve structure, and the two side portions (1a) are folded upward and close to each other to form a wave curve-shaped channel (13) located in the center of the absorption layer (1), and the upper cover layer (2) covers the surface of the channel (13) to fix the two side portions (1a).

2. A novel folded curved channel absorbent sheet according to claim 1, characterized in that: The absorption layer (1) further comprises a covering layer (14) covering the upper surface of the liquid-absorbing material (12); the covering layer (14) and the base fabric (11) are sandwiched to support the liquid-absorbing material (12).

3. A novel folded curved channel absorbent sheet according to claim 2, characterized in that: The materials of the coating layer (14) and the base fabric (11) are toilet paper, and the liquid-absorbing material (12) is composed of wood pulp, fluff pulp and high-molecular water-absorbing resin particles.

4. The novel folded curved channel absorbent sheet according to claim 2, characterized in that: The material of the coating layer (14) is fluffy cloth, the material of the base cloth (11) is dust-free paper, and the liquid-absorbing material (12) is high-molecular water-absorbing resin particles.

5. The novel folded curved channel absorbent sheet according to claim 1, characterized in that: The base fabric (11) is a fluffy fabric structure having an upper fleece layer (111) and a lower water-repellent base layer (112); the liquid-absorbing material (12) is polymer water-absorbing resin particles; the liquid-absorbing material (12) is embedded in the fleece layer (111).

6. A novel folded curved channel absorbent sheet according to any one of claims 1 to 5, characterized in that: The width of the groove (13) is 0.1-20 mm.

7. A novel folded curved channel absorbent sheet according to any one of claims 1 to 5, characterized in that: The material of the upper cover layer (2) is spunlace cloth, toilet paper or fluffy cloth.

8. A novel folded curved channel absorbent sheet according to any one of claims 1 to 5, characterized in that: When the upper cover layer (2) and the absorption layer (1) are fixedly connected, the edge of the upper cover layer (2) does not extend beyond the two side edges of the absorption layer (1).

9. An absorbent product comprising a hydrophilic surface layer, an absorbent core layer and a water-repellent bottom layer (112), characterized in that: The absorbent core layer adopts the absorbent sheet as described in any one of claims 1 to 8.

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