Composite core

Abstract

The utility model relates to the technical field of daily necessities, and discloses a composite core body which comprises a surface layer, a surface layer connected with an isolating layer, the isolating layer connected with an absorbing layer made of composite materials and a bottom layer connected with the bottom layer, the absorbing layer is of a tangled structure formed by sodium polypropionate cross-linked copolymer and wood fibers, the isolating layer is made of non-woven cloth, and the bottom layer is made of wood fibers. The non-woven fabric is non-woven fabric, the surface layer is made of fluffy cotton, the bottom layer is made of dry papermaking non-woven fabric, the gram weight of the surface layer is 22 g / m < 2 >-50 g / m < 2 >, the gram weight of the isolating layer is 8 g / m < 2 >-15 g / m < 2 >, the gram weight of the absorbing layer is 100 g / m < 2 >-200 g / m < 2 >, and the gram weight of the bottom layer is 30 g / m < 2 >-50 g / m < 2 >. According to the composite core body, the surface layer guides liquid downwards, the liquid is absorbed by the absorption layer through the isolation layer, the bottom layer plays a role in bearing, the isolation layer isolates the absorption layer from the surface layer, the liquid in the absorption layer is blocked by the isolation layer, and therefore the reverse osmosis resistance of the composite core body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of daily necessities, in particular to a composite core. Background Art

[0002] Daily necessities, also known as daily necessities, are items used by ordinary people on a daily basis and are daily necessities, that is, household items. Sanitary napkins are a kind of daily necessities. Their main materials are cotton, non-woven fabrics, pulp, etc. From the inside to the outside, they are divided into three layers: surface layer, absorbent core and bottom layer.

[0003] The absorbent core of common sanitary napkins on the market is usually a fluff pulp core structure, which is generally a mixture of fluff pulp and super absorbent resin. The overall core structure is thicker and is prone to reverse seepage under pressure. Utility Model Content

[0004] The purpose of the utility model is to provide a composite core to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a composite core, comprising: a surface layer, the surface layer is connected to an isolation layer, the isolation layer is connected to an absorption layer made of a composite material, and the absorption layer is connected to a bottom layer.

[0006] Preferably, the absorption layer is an entangled structure formed by a sodium polypropionate cross-linked copolymer and wood fibers.

[0007] Preferably, the isolation layer is made of non-woven fabric.

[0008] Preferably, the nonwoven fabric is a nonwoven fabric.

[0009] Preferably, the surface layer is made of fluffy cotton.

[0010] Preferably, the bottom layer is made of dry-laid papermaking nonwoven fabric.

[0011] Preferably, the surface layer has a grammage of 22 g / m 2 -50g / m 2 .

[0012] Preferably, the weight of the isolation layer is 8 g / m 2 -15g / m 2 .

[0013] Preferably, the weight of the absorbent layer is 100 g / m 2 -200g / m 2 .

[0014] Preferably, the weight of the bottom layer is 30 g / m 2 -50g / m 2 .

[0015] The composite core has the following beneficial effects:

[0016] The surface layer of the composite core guides the liquid downward, and the liquid is absorbed by the absorption layer through the isolation layer. The bottom layer plays a bearing role, and the isolation layer isolates the absorption layer from the surface layer, so that the liquid in the absorption layer is blocked by the isolation layer, thereby improving the anti-reverse osmosis ability of the composite core. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a composite core provided in an embodiment of the present application.

[0018] In the figure: 1, surface layer; 2, isolation layer; 3, absorption layer; 4, bottom layer. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] like Figure 1 As shown, the utility model provides an embodiment of a composite core, comprising: a surface layer 1, the surface layer 1 is made of fluffy cotton, the fluffy cotton has good moisture absorption performance, can quickly absorb sweat or moisture on the body surface, and quickly disperse and discharge it, which helps to keep the skin dry, improve comfort, and increase the flow conductivity of the surface layer 1. There are many gaps between the fluffy cotton fibers, which can not only store air to form a heat insulation layer, but also provide a good warming effect in winter, and allow air to flow freely, thereby having good air permeability. The weight of the surface layer 1 is 22g / m 2 .

[0021] The surface layer 1 is connected to the isolation layer 2, and the weight of the isolation layer 2 is 8g / m 2 The isolation layer 2 is made of non-woven fabric, and the non-woven fabric is a non-woven fabric. The non-woven fabric is spunbond non-woven fabric. Spunbond non-woven fabric has good air permeability, which helps to reduce the accumulation of heat and moisture and improve the use experience. The spunbond non-woven fabric has good water absorption performance, can quickly absorb liquid, and quickly diffuse the liquid, effectively improving the absorption capacity of the composite core. In addition, the spunbond non-woven fabric has high strength and good wear resistance, can withstand strong stretching and tearing, and can improve the strength of the composite core.

[0022] The isolation layer 2 is connected to the absorption layer 3 made of a composite material, and the weight of the absorption layer 3 is 120g / m 2The absorption layer 3 is an entangled structure formed by sodium polypropionate cross-linked copolymer and wood fiber. The sodium polypropionate cross-linked copolymer has excellent water absorption performance and can quickly absorb a large amount of water. The suspension composed of wood fibers has good water retention performance. When the sodium polypropionate cross-linked copolymer and the wood fiber form an entangled structure, its water absorption capacity can be further enhanced, and the water retention of the composite core can be improved. The wood fiber can also provide support for the entangled structure so that the material will not be too loose.

[0023] The absorbent layer 3 is connected to the bottom layer 4, and the weight of the bottom layer 4 is 30g / m 2 The bottom layer 4 is made of dry-laid papermaking nonwoven fabric, which is heat-sealed dust-free paper. The heat-sealed dust-free paper has excellent air permeability and liquid permeability, and can absorb liquid that is not absorbed by the absorption layer 3 to prevent leakage due to excessive liquid, so that the bottom layer 4 has a good carrying capacity for the upper layer and liquid. The heat-sealed dust-free paper can reduce the dust and fiber shedding on the surface of the paper through special manufacturing process and material treatment, and no powder, glue and other substances are needed in the production process of the heat-sealed dust-free paper, thereby avoiding the generation of dust and pollutants and making the composite core cleaner.

[0024] In this embodiment, the surface layer 1 guides the liquid downward, and the liquid is absorbed by the absorption layer 3 through the isolation layer 2. The bottom layer 4 plays a bearing role. The isolation layer 2 isolates the absorption layer 3 from the surface layer 1, so that the liquid in the absorption layer 3 is blocked by the isolation layer 2, thereby improving the anti-reverse osmosis ability of the composite core.

[0025] In addition, the composite core has fewer layers, making the entire core structure thinner, lighter and easier to carry, and further reducing costs.

[0026] In another embodiment, the weight of the surface layer 1 is 30 g / m 2 The nonwoven fabric used in the isolation layer 2 is a spunlace nonwoven fabric, and the gram weight of the isolation layer 2 is 9g / m 2 , the weight of the absorption layer 3 is 150g / m 2 In addition, the dry papermaking nonwoven fabric used in the bottom layer 4 is a glued dust-free paper, and the weight of the bottom layer 4 is 40g / m 2 .

[0027] In another embodiment, the weight of the surface layer 1 is 50 g / m 2 The surface layer 1 is connected to the isolation layer 2. The nonwoven fabric used in the isolation layer 2 is a melt-blown nonwoven fabric. The gram weight of the isolation layer 2 is 15g / m 2 , and the weight of the absorption layer 3 is 200g / m 2 The weight of the bottom layer 4 is 50g / m 2The dry paper nonwoven fabric used in the bottom layer 4 is a comprehensive dust-free paper. The comprehensive dust-free paper is usually made of degradable cellulose material, which is environmentally friendly and sustainable, so that the bottom layer 4 will not have a negative impact on the environment, and it helps to reduce the use of non-degradable materials such as plastics.

[0028] It can be understood that the connection method of two adjacent layers in the present application is hot pressing connection at the edge, or connection using hot melt adhesive, and the composite core has fewer layers, simple structure, and is easy to produce.

[0029] Working principle: the surface layer 1 guides the liquid downward, and the liquid is absorbed by the absorption layer 3 through the isolation layer 2. The bottom layer 4 plays a bearing role. The isolation layer 2 isolates the absorption layer 3 from the surface layer 1, so that the liquid in the absorption layer 3 is blocked by the isolation layer 2.

[0030] In summary, although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A composite core, characterized in that: include: A surface layer (1), the surface layer (1) is connected to an isolation layer (2), the isolation layer (2) is connected to an absorption layer (3) made of a composite material, and the absorption layer (3) is connected to a bottom layer (4); The isolation layer (2) is made of non-woven fabric, the surface layer (1) is made of fluffy cotton, and the bottom layer (4) is made of dry paper non-woven fabric.

2. A composite core according to claim 1, characterized in that: The isolation layer (2) is made of non-woven fabric.

3. A composite core according to claim 1, characterized in that: The surface layer (1) has a gram weight of 22 g / m 2 -50g / m 2 .

4. A composite core according to claim 1, characterized in that: The isolation layer (2) has a gram weight of 8 g / m 2 -15g / m 2 .

5. A composite core according to claim 1, characterized in that: The gram weight of the absorption layer (3) is 100 g / m 2 -200g / m 2 .

6. A composite core according to claim 1, characterized in that: The base layer (4) has a grammage of 30 g / m 2 -50g / m 2 .

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