Composite expanded paper

Abstract

The utility model relates to the technical field of expanded paper, in particular to composite expanded paper which comprises a main body layer, a connecting layer and protrusions, a flow guide seam is formed in the main body layer and penetrates through the main body layer, the top face of the connecting layer is connected with the bottom face of the main body layer, a through hole is formed in the connecting layer, and the orthographic projection of the flow guide seam on the connecting layer is not in contact with the through hole. The protrusion is located on the bottom face of the connecting layer and connected with the connecting layer, the retention time of urine on the expanded paper is prolonged through the main body layer, meanwhile, the protrusion abuts against and goes deep into the water absorption component, displacement of the water absorption component can be restrained, the core body is prevented from lumping, meanwhile, blocked urine can go deep into the water absorption component through the protrusion, and rapid absorption of the urine is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of puffed paper, in particular to a composite puffed paper. Background Art

[0002] Puffed paper is a lightweight material made from pulp as the main raw material through a special process. In the absorbent core of diapers and sanitary napkins, puffed paper is used in combination with other materials such as polymer absorbent resin and fluff pulp to optimize absorption performance and is an important component of the absorbent core.

[0003] The core shell is often made of expanded paper. Urine flows on the surface of the core and is absorbed by the water-absorbing components after penetrating through the expanded paper. If the structure of the expanded paper is improved to increase the penetration efficiency of urine on the core, it will play a positive role in improving the urine absorption efficiency of the core. Utility Model Content

[0004] The purpose of the utility model is to provide a composite puffed paper to solve the problems mentioned in the background technology.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solution: it includes a main layer, a connecting layer and a protrusion, the main layer is provided with a guide seam, the guide seam runs through the main layer, the top surface of the connecting layer is connected to the bottom surface of the main layer, a through hole is provided on the connecting layer and the orthographic projection of the guide seam on the connecting layer has no contact with the through hole, and the protrusion is located on the bottom surface of the connecting layer and is connected to the connecting layer.

[0006] In order to optimize the above technical solution, further measures are taken as follows: the guide seams are regularly distributed in a matrix shape on the main layer and the guide seams are in a cross X shape. The guide seams can guide urine and increase the retention time of urine on the surface of the main layer, which helps to improve the absorption effect of urine on the surface of the expanded paper.

[0007] As a further improvement to the above technical solution: the thickness of the connecting layer is smaller than that of the main body layer. This design is intended to prevent the thickness of the connecting layer from excessively affecting the bendability and flexibility of the expanded paper.

[0008] As an improvement to the above technical solution: the protrusion is flat cylindrical and the orthographic projection of the protrusion on the connecting layer is covered by the orthographic projection of the guide seam on the connecting layer, so that the position of the protrusion on the connecting layer corresponds to the position of the guide seam, and urine can be absorbed by the water-absorbing component through the protrusion after penetration.

[0009] As a further improvement to the technical solution: the area of ​​the protrusion is smaller than the area of ​​the guide seam, ensuring that urine retained at the guide seam can be absorbed by the water-absorbing component through the protrusion.

[0010] From the above description of the structure of the utility model, it can be seen that compared with the prior art, the utility model has the following advantages:

[0011] The utility model provides a composite puffed paper, which increases the residence time of urine on the puffed paper through the main layer, and uses the protrusions to resist and penetrate the water-absorbing components, which can not only inhibit the displacement of the water-absorbing components to avoid lumping of the core, but also allow the blocked urine to penetrate into the water-absorbing components through the protrusions, thereby facilitating rapid absorption of urine. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the utility model;

[0015] Figure 3 for Figure 2 Partial enlarged view;

[0016] In the figure: main layer-1, guide seam-101, connection layer-2, through hole-201, protrusion-3 DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] Example

[0019] See also Figure 1-3 The utility model provides a composite puffed paper, including a main body layer 1, a connecting layer 2 and a protrusion 3. The main body layer 1 is provided with a guide slit 101, which penetrates the main body layer 1. The guide slits 101 are regularly distributed in a matrix on the main body layer 1 and are in a cross X shape. In implementation, the column layer 1, the connecting layer 2 and the protrusion layer 3 can be composed of a composite of puffed papers of the same material but different thicknesses.

[0020] The top surface of the connecting layer 2 is connected to the bottom surface of the main layer 1 . The thickness of the connecting layer 2 is less than that of the main layer 1 . A through hole 201 is provided on the connecting layer 2 , and the orthographic projection of the guide slot 101 on the connecting layer 2 has no contact with the through hole 201 .

[0021] The protrusion 3 is located on the bottom surface of the connecting layer 2 and is connected to the connecting layer 2. The protrusion 3 is flat cylindrical and the orthographic projection of the protrusion 3 on the connecting layer 2 is covered by the orthographic projection of the guide slot 101 on the connecting layer 2. The area of ​​the protrusion 3 is smaller than the area of ​​the guide slot 101.

[0022] The technical progress achieved by the present invention compared with the existing technology is: this product can be used to prepare the core of diapers, the main layer 1 is located on the outside and the connecting layer 2 is located on the inside and in contact with the water-absorbing component. Since the structure is provided with hollow structures such as the guide seam 101 and the through hole 201, the flexibility of the expanded paper will not be affected although it is a composite structure.

[0023] When urine comes into contact with the main body layer 1, the guide slits 101 provided therein block the flow of urine, increasing its residence time on the surface of the main body layer 1, thereby preventing side leakage and improving the core's ability to absorb urine. The protrusions 3 on the connecting layer 2 act as a stop against the absorbent component, preventing it from escaping and clumping. Furthermore, the protrusions 3 correspond to the position of the guide slits 101, acting as a medium to guide urine blocked by the guide slits 101 toward absorption by the absorbent component.

[0024] The protrusions 3 can penetrate into the water-absorbing component while resisting the water-absorbing component, which helps to increase the contact area between the water-absorbing component and urine, thereby improving the absorption effect of the core on urine.

[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A composite puffed paper, characterized in that: include: A main body layer (1), wherein a guide slit (101) is provided on the main body layer (1), and the guide slit (101) penetrates the main body layer (1); A connecting layer (2), wherein the top surface of the connecting layer (2) is connected to the bottom surface of the main body layer (1), a through hole (201) is provided on the connecting layer (2), and the orthographic projection of the guide slit (101) on the connecting layer (2) does not contact the through hole (201); The protrusion (3) is located on the bottom surface of the connecting layer (2) and is connected to the connecting layer (2).

2. The composite puffed paper according to claim 1, characterized in that: The guide slits (101) are regularly distributed on the main body layer (1) in a matrix shape, and the guide slits (101) are in a crossed X shape.

3. The composite puffed paper according to claim 1, characterized in that: The thickness of the connecting layer (2) is smaller than the thickness of the main body layer (1).

4. The composite puffed paper according to any one of claims 1 to 3, characterized in that: The protrusion (3) is in a flat cylindrical shape, and the orthographic projection of the protrusion (3) on the connecting layer (2) and the guide seam (101) are covered by the orthographic projection on the connecting layer (2).

5. The composite puffed paper according to claim 4, characterized in that: The area of ​​the protrusion (3) is smaller than the area of ​​the guide slot (101).

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