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 protruding particles, deformation holes are formed in the main body layer, deformation joints are formed in the main body layer and communicated with the deformation holes, the connecting layer is located below the main body layer, and the top face of the connecting layer is connected with the bottom face of the main body layer. Through holes are formed in the connecting layer, orthographic projections of the deformation holes on the connecting layer are not in contact with the through holes, the protruding particles are located on the bottom face of the connecting layer and connected with the connecting layer, the protruding particles are in a circular truncated cone shape, and orthographic projections of the protruding particles on the connecting layer are covered by orthographic projections of the deformation holes on the connecting layer. The structure with the deformation joints and the deformation holes is arranged on the main body layer to block urine flowing, urine can be absorbed by the core body, meanwhile, the side leakage phenomenon is reduced, in addition, after the core body expands, deformation of the surface of the core body is concentrated at the deformation holes, the surface of the core body is in an uneven shape, and the situation that a user feels uncomfortable due to the fact that the core body covers a crotch can be avoided.

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 refers to an absorbent material made of pulp in the prior art. It is often used in combination with a polymer absorbent resin (SAP) to manufacture the core of diapers and sanitary napkins. Puffed paper can play a diversion role and promote the diffusion of urine on the core.

[0003] Diapers may leak sideways during use, which is caused by the core being unable to absorb urine in time. In addition, after the core fully absorbs urine, its volume will expand and stick to the genitals, and the poor air permeability will cause discomfort to the user. The purpose of this utility model is to improve the existing puffed paper structure to solve the above-mentioned problems encountered by the core during use. 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 utility model provides the following technical solution: it includes a main layer, a connecting layer and raised particles, a deformation hole is opened on the main layer, a deformation seam is opened on the main layer and the deformation seam is connected to the deformation hole, the connecting layer is located below the main layer, the top surface of the connecting layer is connected to the bottom surface of the main layer, a through hole is opened on the connecting layer, the orthographic projection of the deformation hole on the connecting layer has no contact with the through hole, the raised particles are located on the bottom surface of the connecting layer and connected to the connecting layer, the raised particles are truncated cone-shaped, and the orthographic projection of the raised particles on the connecting layer is covered by the orthographic projection of the deformation hole on the connecting layer.

[0006] In order to optimize the above technical solution, further measures are taken: the thickness of the connecting layer is less than the thickness of the main layer to avoid the puffed paper being too thick and affecting the flexibility and permeability of the puffed paper.

[0007] As a further improvement to the above technical solution: the deformation seams connected to the deformation hole are distributed in a rotationally symmetrical manner with the midpoint of the deformation hole as the center and the spacing between adjacent deformation seams is the same. Such a structure helps the deformation hole to deform and bend uniformly along the circumferential direction.

[0008] As a further improvement of the technical solution: the cross-sectional area of ​​the raised particles is smaller than the area of ​​the deformed holes, and its setting is intended to ensure that urine blocked by the deformed holes can be absorbed by the raised particles through infiltration.

[0009] As an improvement to the above technical solution: the center of the orthographic projection of the protruding particles on the connection layer coincides with the center of the orthographic projection of the deformed holes on the connection layer.

[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 blocks the flow of urine by arranging a deformation seam and a deformation hole structure on the main layer, thereby helping the urine to be absorbed by the core body and reducing side leakage. In addition, when the core body expands, the deformation of the core body surface will be concentrated at the deformation holes, making the core body surface uneven, which can avoid the core body covering the crotch and causing discomfort to the user. 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 three-dimensional structure of the utility model;

[0015] Figure 3 for Figure 2 Partial detail drawing;

[0016] In the figure: main layer-1, deformation hole-101, deformation seam-102, connection layer-2, through hole-201, protruding particles-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 raised particles 3. The main body layer 1 is provided with a deformation hole 101, and the main body layer 1 is provided with a deformation seam 102, and the deformation seam 102 is connected to the deformation hole 101. The deformation seams 102 connected to the deformation hole 101 are distributed in a rotationally symmetrical manner with the midpoint of the deformation hole 101 as the center, and the spacing between adjacent deformation seams 102 is the same. The main body layer 1, the connecting layer 2 and the raised particles 3 can be made of puffed paper of the same material but different thicknesses.

[0020] The connecting layer 2 is located below the main layer 1. The thickness of the connecting layer 2 is less than that of the main layer 1. The top surface of the connecting layer 2 is connected to the bottom surface of the main layer 1. A through hole 201 is opened on the connecting layer 2. The positive projection of the deformation hole 101 on the connecting layer 2 has no contact with the through hole 201.

[0021] The raised particles 3 are located on the bottom surface of the connecting layer 2 and are connected to the connecting layer 2. The cross-sectional area of ​​the raised particles 3 is smaller than the area of ​​the deformed hole 101. The raised particles 3 are truncated cone-shaped. The center of the orthographic projection of the raised particles 3 on the connecting layer 2 coincides with the center of the orthographic projection of the deformed hole 101 on the connecting layer 2.

[0022] Working principle: This product can be used to prepare the core of diapers. The main layer 1 is located outside the core, and the connecting layer 2 is located inside the core and contacts the water-absorbing components of the core. Deformation holes 101 and deformation seams 102 are provided on the surface of the main layer 1. When urine flows on the surface of the core, the deformation holes 101 and deformation seams 102 can block the flow of urine, thereby increasing the contact time between urine and the core, and helping urine to penetrate the expanded paper and be absorbed by the water-absorbing components inside the core.

[0023] When the water-absorbing components in the core fully absorb urine, the volume will expand. Since the main layer 1 is provided with deformation holes 101 and deformation seams 102, the cross-sectional area of ​​the expanded paper is smallest at the deformation holes 101 and deformation seams 102. Therefore, the deformation of the core will be concentrated at the deformation holes 101 and deformation seams 102 and bulge outward, making the surface of the core uneven. This can prevent the core from covering the genitals tightly after expansion, causing the user to feel stuffy, damp and uncomfortable.

[0024] The raised particles 3 can resist the water-absorbing components inside the core, which can prevent the water-absorbing components in the core from running and causing lumps to form, affecting the comfort of use. At the same time, the raised particles 3 penetrate deep into the water-absorbing components while resisting the water-absorbing components, thereby increasing the contact area between the water-absorbing components and urine, which helps to improve the core's absorption efficiency of 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 deformation hole (101) is provided on the main body layer (1), a deformation seam (102) is provided on the main body layer (1), and the deformation seam (102) is communicated with the deformation hole (101); A connecting layer (2), the connecting layer (2) is located below the main body layer (1), 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 deformation hole (101) on the connecting layer (2) does not contact the through hole (201); The raised particles (3) are located on the bottom surface of the connecting layer (2) and are connected to the connecting layer (2). The raised particles (3) are truncated cone-shaped, and the orthographic projection of the raised particles (3) on the connecting layer (2) is covered by the orthographic projection of the deformed hole (101) on the connecting layer (2).

2. 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).

3. The composite puffed paper according to claim 1, characterized in that: The deformation slits (102) connected to the deformation hole (101) are distributed in a rotationally symmetrical manner with the midpoint of the deformation hole (101) as the center, and the spacing between adjacent deformation slits (102) is the same.

4. The composite puffed paper according to claim 1, characterized in that: The cross-sectional area of ​​the protruding particles (3) is smaller than the area of ​​the deformed holes (101).

5. The composite puffed paper according to any one of claims 1 to 4, characterized in that: The center of the orthographic projection of the protruding particles (3) on the connecting layer (2) coincides with the center of the orthographic projection of the deformed hole (101) on the connecting layer (2).

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