Absorption core with efficient flow guide property and breathability and method for manufacturing absorption core

Abstract

The invention discloses an absorption core with an efficient flow guide property and breathability. The absorption core comprises a surface layer, a bottom layer and an absorption layer. The absorption layer comprises a non-woven fabric layer, the non-woven fabric layer clings to the lower surface of the surface layer, and super absorbent polymers are uniformly scattered in the non-woven fabric layer; the surface layer and the non-woven fabric layer cling to each other to form a compound layer, flow guide grooves are formed in the compound layer, and a core is divided into a plurality of absorption regions by the flow guide grooves; the compound layer is connected with the upper surface of the bottom layer; super absorbent polymers are uniformly scattered between the lower surface of the non-woven fabric layer and the upper surface of the bottom layer. The invention further provides a method for processing the absorption core. The absorption core and the method have the advantages that the plasticizing degree of non-woven fabrics can be lowered to the greatest extent, the softness and the comfort can be enhanced, and the touch can be improved; the SAP (super absorbent polymers) with different properties are arranged among the layers of the absorption core in a matched manner, obvious protrusions are formed after liquid is absorbed by the core, and the absorption core feels soft and comfortable and is good in breathability, high in absorbed liquid diffusion speed and small in skin contact area.

Description

technical field [0001] The invention belongs to the field of sanitary products, and in particular relates to an absorbent core with high-efficiency flow conductivity and air permeability and a manufacturing method thereof. Background technique [0002] The currently known absorbent cores for treating human excreta can be roughly divided into two types. [0003] One is a composite core, such as figure 1 As shown, it generally consists of the outermost two layers of dust-free paper 1, the middle layer of non-woven fabric 2, and two layers of SAP3 (super absorbent resin). [0004] The other is cotton core body, such as figure 2 As shown, it consists of dust-free paper 1 or hydrophilic cloth wrapped fluff pulp 13 and SAP3. [0005] In addition to the above-mentioned common structures, some manufacturers also make minor adjustments to the structure of the absorber, such as figure 1 A layer of wood pulp is added to the structure of the figure 2 The cotton core is embossed w...

AI Technical Summary

Problems solved by technology

[0008] 1. If figure 1 As shown, when this type of core needs to add a large amount of SAP, it is necessary to increase the amount of hot melt adhesive used, otherwise a large amount of SAP is easy to move, resulting in uneven distribution, and too much hot melt adhesive will cause a significant decrease in absorption speed and air permeability , and feel stiff

[0009] 2. If figure 1 , figure 2 As shown, the two types of cores become flat after absorbing liquid. Even if the pattern is pressed on the core, it will be stretched after absorbing liquid, so that the surface layer of the product has a large contact area with the skin, and the air on the skin surface cannot be fully circulated. And form convection, the harmful gas volatilized from the liquid is easy to cause damage to the skin and induce various skin diseases

[0010] 3. If figure 1 As shown, this type of core body has weak liquid absorption and diffusion effect, slow secondary absorption speed, and low core body utilization rate.

Even if the grid or stripes are pressed on the absorber, the embossing will be lifted after the liquid is absorbed, making it impossible to fix the position of the SAP particles

In the case of a slight external force, the SAP in the liquid-absorbing part is easy to shift, resulting in local accumulation and faults in other parts, which not only affects the secondary liquid-absorbing effect, but also affects the comfort of wearing

[0012] 5. If figure 2 As shown, this type of core generally uses a large amount of fluff pulp. After absorbing liquid, most of the liquid is captured by the fluff pulp instantaneously, and it is difficult to spread to both ends, and it is easy to cause the core to swell locally and bulge into a bag shape.

In addition to easily causing faults, the water lock is not strong, it is easy to cause liquid reverse osmosis, and it is easy to volatilize to damage the skin or affect the skin touch

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