Sheet with absorption function and product

Abstract

The utility model relates to the field of disposable sanitary products, in particular to a sheet with an absorption function, which solves the problem of slow infiltration of an absorber and comprises an outer wrapping layer, an upper absorption layer and a lower absorption layer, the upper absorption layer and the lower absorption layer are arranged in the outer wrapping layer, the upper absorption layer is composed of 2-10 strip-shaped water absorption sheets which are distributed at intervals, and the lower absorption layer is composed of 2-10 strip-shaped water absorption sheets which are distributed at intervals. An infiltration channel facilitating liquid infiltration is formed between every two adjacent water-absorbing sheets, the outer wrapping layer located at the infiltration channel is subjected to hot pressing or ultrasonic welding to form pressing point parts distributed in a dot matrix shape, the outer wrapping layer is fixed to the lower absorbing layer through the pressing point parts, and the centers of the pressing point parts are punctured to form infiltration holes.

Description

Technical Field

[0001] The utility model relates to the field of disposable sanitary products, in particular to a sheet material and a product with absorption function. Background Art

[0002] In order to solve the problem of insufficient absorption of sanitary napkins on the market, there are products with double-layer composite cores. The applicant has proposed a technical solution with patent announcement number CN 217593239U to solve the problem of slow absorption and diffusion of the current composite cores. The technical solution is a new absorbent structure, which is defined as having a longitudinal direction in the length direction and a transverse direction in the width direction. It includes an outer wrapping layer, an upper absorbent layer arranged in the outer wrapping layer, and a lower absorbent layer. The upper absorbent layer is composed of 2-10 strip-shaped absorbent sheets distributed at intervals, and infiltration channels are formed between each of the absorbent sheets to facilitate liquid infiltration. Each of the absorbent sheets is in a straight line, an S-shape, or a wavy structure with axisymmetric distribution on both sides. The lower absorbent layer is composed of wood pulp and SAP, or is composed of fluffy cotton filled with SAP.

[0003] On this basis, the applicant has further improved the technical solution to further improve the performance of infiltration and absorption. Utility Model Content

[0004] Therefore, the utility model provides a sheet material and a product with absorption function, which solves the problem of slow penetration of the absorbent body.

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

[0006] A sheet material with an absorption function, which is defined as having a longitudinal direction and a transverse direction, and comprises an outer wrapping layer, an upper absorption layer arranged in the outer wrapping layer, and a lower absorption layer. The upper absorption layer is composed of 2-10 strip-shaped water-absorbent sheets distributed at intervals, and infiltration channels for facilitating liquid infiltration are formed between each of the water-absorbent sheets. The outer wrapping layer located at each of the infiltration channels is formed by heat pressing or ultrasonic welding to form a dot-matrix distributed pressure point portion, and is fixed to the lower absorption layer through each of the pressure point portions, and a hole is punctured in the center of each of the pressure point portions to form an infiltration hole.

[0007] Preferably, the diameter of the infiltration hole is 0.1-10 mm.

[0008] Preferably, each of the absorbent sheets is in a straight line, an S-shape, or a wavy structure with axisymmetric distribution on both sides, and the lower absorbent layer is composed of wood pulp and SAP, or is composed of fluffy cotton filled with SAP.

[0009] Preferably, the upper absorbent layer further comprises side sheets arranged on both lateral sides of the absorbent body, and one side of the side sheet close to the edge is in a straight line shape, and the other side is in a wavy curve structure.

[0010] Preferably, the width of the infiltration channel is 1-20 mm.

[0011] A product with an absorption function comprises a hydrophilic surface layer, an absorption core layer and a water-repellent bottom layer, wherein the absorption core layer adopts the sheet material with an absorption function.

[0012] Preferably, a guide layer is provided between the hydrophilic surface layer and the absorbent core layer, and a hollow groove is provided at the guide layer above the infiltration channel.

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

[0014] The technical solution adopts a double-layer structure of an upper absorbent layer and a lower absorbent layer. The upper absorbent layer forms a plurality of infiltration channels through the water-absorbing sheets arranged at intervals. On the basis of this infiltration channel, a pressure point portion and a structure of infiltration holes are added. This structure can form a concave structure on the surface of the outer wrapping layer at the position of each pressure point portion, and the infiltration rate can be further improved in conjunction with the infiltration holes. Secondly, the welding molding design of the pressure point portion can provide good support for the structure of the upper absorbent layer. Under the traditional structure, in order to avoid the positional displacement of each water-absorbing sheet, the water-absorbing sheet and the lower absorbent layer need to be fixed to each other by glue, while the structure of the pressure point portion omits this gluing and bonding process. Moreover, the water-absorbing sheet will swell to form a three-dimensional structure after absorbing liquid, which reduces the application of glue and can also structurally ensure the expansion degree of the water-absorbing sheet to form a larger and more three-dimensional spatial structure, so that the liquid has better diffusivity, the infiltration speed is guaranteed, and the absorption rate is faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the stacked structure of an embodiment of the utility model (a schematic diagram of the cross-sectional structure at the pressure point position);

[0016] Figure 2 for Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0017] Figure 3 This is a schematic diagram of the surface structure of the upper absorption layer in an embodiment of the utility model;

[0018] Figure 4 A schematic diagram of the surface structure of an upper absorption layer of another structure of an embodiment of the utility model;

[0019] Figure 5 It is a schematic diagram of the stacking structure of the product of the embodiment of the utility model.

[0020] Figure numerals: 1, outer wrapping layer; 11, upper wrapping cloth; 12, lower wrapping cloth; 2, upper absorbent layer; 21, water-absorbent sheet; 22, infiltration channel; 23, pressure point; 231, infiltration hole; 24, side sheet; 3, lower absorbent layer; 4, guide layer; 41, hollow groove. 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] Example

[0023] refer to Figures 1 to 3, a sheet material with an absorbent function, which is defined as having a longitudinal direction in the length direction and a transverse direction in the width direction, and comprises an outer wrapping layer 1, an upper absorbent layer 2 and a lower absorbent layer 3 arranged in the outer wrapping layer 1, comprising an upper wrapping cloth 11 and a lower wrapping cloth 12, the transverse ends of the lower wrapping cloth 12 are folded upward and fixed to the upper surface of the upper wrapping cloth 11; the upper absorbent layer 2 is composed of 2-10 strip-shaped water-absorbing sheets 21 arranged at intervals, and an infiltration channel 22 is formed between each of the water-absorbing sheets 21 to facilitate the infiltration of liquid, and the outer wrapping layer 1 located at each of the infiltration channels 22 is formed by hot pressing or ultrasonic welding to form a dot-matrix distributed pressure point portion 23, and is fixed to the lower absorbent layer 3 through each of the pressure point portions 23, and the center of each of the pressure point portions 23 is pierced to form a seepage hole 231; the technical solution adopts a double-layer structure of an upper absorbent layer 2 and a lower absorbent layer 3, and the upper absorbent layer 2 is formed by the water-absorbing sheets 2 arranged at intervals. 1 forms a plurality of infiltration channels 22, and on the basis of the infiltration channel 22, a pressure point portion 23 and a structure of an infiltration hole 231 are added. This structure can form a concave structure at the position of each pressure point portion 23 on the surface of the outer wrapping layer 1, and the infiltration rate can be further improved by cooperating with the infiltration hole 231; secondly, through the welding molding design of the pressure point portion 23, the structure of the upper absorbent layer 2 can be well supported. Under the traditional structure, in order to avoid the positional deviation of each water-absorbent sheet 21, the water-absorbent sheet 21 and the lower absorbent layer 3 need to be fixed to each other by adhesive, while the structure of the pressure point portion 23 omits the gluing and bonding process; moreover, the water-absorbent sheet 21 will expand to form a three-dimensional structure after absorbing liquid, which reduces the application of adhesive and can also structurally ensure the expansion degree of the water-absorbent sheet 21 to form a larger and more three-dimensional spatial structure, so that the liquid has better diffusivity, the infiltration rate is guaranteed, and the absorption rate is faster. During implementation, the infiltration hole 231 is a circular hole, and its diameter can be any value between 0.1-10 mm depending on the product size, model and type, so as to ensure that the water-absorbent sheet 21 is fixed while having a more suitable infiltration structure; specifically, the number of water-absorbent sheets 21 can also be flexibly set according to product requirements, and the number can be 2-10; similarly, the width a of the infiltration channel 22 can also be adjusted according to requirements, and it can be any value between 1-20 mm.

[0024] In this embodiment, each of the absorbent sheets 21 is in an S-shaped wave curve structure; at the same time, referring to the applicant's prior application CN 217593239 U, each of the absorbent sheets 21 can be in any form of a straight line, an S-shaped or a wave-like structure with axisymmetric distribution on both sides; in this structure, the upper absorbent layer 2 has a certain liquid absorption function and also has a certain flow diversion effect, while the lower absorbent layer 3 assumes the main liquid absorption function. When the material is used for sanitary napkins, the lower absorbent layer 3 is composed of wood pulp and SAP; and when used for products such as diapers with large volume absorption, the lower absorbent layer 3 can be composed of fluffy cotton filled with SAP.

[0025] Also refer to Figure 4 On the basis of the above, the upper absorbent layer 2 further comprises side sheets 24 arranged on both sides of the absorbent body in the transverse direction, and the side sheet 24 close to the edge is straight and the other side is a wavy curve structure; thus, the side sheet 24 is arranged on the edge of the absorbent body, which has the ability to absorb liquid on both sides in the transverse direction compared with the first embodiment, and improves the effect of preventing side leakage from the structure.

[0026] 217593239U to understand the forming process of the upper absorbent layer 2.

[0027] The specific application of the material is to improve on the traditional absorbent articles, that is, a product with absorbent function, including a hydrophilic surface layer, an absorbent core layer and a water-repellent bottom layer, and the absorbent core layer adopts the above-mentioned sheet with absorbent function. 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.

[0028] When applied to diapers, Figure 5 As shown, a guide layer 4 is provided between the hydrophilic surface layer and the absorbent core layer, and a hollow groove 41 is provided at the guide layer 4 located above the infiltration channel 22. The addition of the guide layer 4 structure can form a guide along the length direction of the diaper product when the amount of urine is large in combination with the above-mentioned absorbent functional material, and can gradually extend toward the hollow groove 41 during the guide process, and then fall into the infiltration channel 22, thereby improving the rapid transfer and absorption effect when the amount of body fluid is large.

[0029] 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 sheet material with an absorbent function, which is defined as having a longitudinal direction and a transverse direction, and comprises an outer wrapping layer (1), an upper absorbent layer (2) and a lower absorbent layer (3) arranged in the outer wrapping layer (1), characterized in that: The upper absorbent layer (2) is composed of 2 to 10 strip-shaped water-absorbent sheets (21) distributed at intervals, and infiltration channels (22) are formed between each of the water-absorbent sheets (21) to facilitate liquid infiltration. The outer wrapping layer (1) located at each of the infiltration channels (22) is formed by heat pressing or ultrasonic welding to form a dot-matrix distributed pressure point portion (23), and is fixed to the lower absorbent layer (3) through each of the pressure point portions (23), and each of the pressure point portions (23) is punctured at the center to form a infiltration hole (231).

2. The sheet material with absorption function according to claim 1, characterized in that: The diameter of the infiltration hole (231) is 0.1-10 mm.

3. The sheet material with absorption function according to claim 1, characterized in that: Each of the absorbent sheets (21) is in a straight line, an S-shape, or a wavy structure with axisymmetric distribution on both sides. The lower absorbent layer (3) is composed of wood pulp and SAP, or is composed of fluffy cotton filled with SAP.

4. A sheet material with absorption function according to claim 1, 2 or 3, characterized in that: The upper absorbent layer (2) further comprises side sheets (24) arranged on both lateral sides of the absorbent body, wherein one side of the side sheet (24) close to the edge is in a straight line shape, and the other side is in a wavy curve structure.

5. A sheet material with absorption function according to claim 1, 2 or 3, characterized in that: The width of the infiltration channel (22) is 1-20 mm.

6. A product with an absorbent function, comprising a hydrophilic surface layer, an absorbent core layer and a water-repellent bottom layer, characterized in that: The absorbent core layer adopts the sheet material with absorbent function as described in any one of claims 1-5.

7. A product with an absorbent function according to claim 6, characterized in that: A guide layer (4) is arranged between the hydrophilic surface layer and the absorbent core layer, and a hollow groove (41) is provided at the guide layer (4) located above the infiltration channel (22).

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