Flow guide layer of paper diaper with lawn structure and preparation method of flow guide layer

Abstract

The invention relates to a flow guide layer of a paper diaper with a lawn structure. The flow guide layer comprises a base cloth, an adhesive layer and an ultra-short fiber layer; the ultra-short fiber layer is a layer of low density ultra-short fibers vertically arranged, and through a method of static electricity implantation, the ultra-short fibers are evenly fixed on the base cloth. A three-dimensional structure is formed; gaps between the ultra-short fibers arranged vertically are large, when penetrating a surface layer to reach the flow guide layer, liquid longitudinally diffuses along the fibers more arranged on the base cloth in the longitudinal direction, after permeating down, the liquid can be quickly captured by a fluffy structure with a certain thickness, and after temporary storage, the liquid diffuses immediately, and is absorbed by a central layer; the fluffy flow guide structure can increase gross absorptive amount of the liquid, and accelerate liquid absorption of SAPin the longitudinal direction of a product, and possibility of return-permeating is reduced; less of fiber dosage is achieved; and collapse when the paper diaper is wet is reduced, utilization efficiency of the SAP is improved, and at the same time, the return-permeating is reduced.

Description

technical field [0001] The invention relates to a diaper, in particular to a lawn structure diaper diversion layer and a preparation method thereof. Background technique [0002] The diversion layer is a layer of non-woven material used in sanitary products such as baby diapers. It is placed between the surface material and the absorbent core. The liquid leaves the user's skin quickly, keeping the skin dry. [0003] The traditional diversion layer mostly uses non-woven materials such as hot air, mainly polypropylene fiber and polyester fiber as raw materials, which are carded by a carding machine to form a web with directional fibers, which are penetrated and reinforced by hot air to form a diversion material. For an ideal diversion layer, it is hoped that the liquid will diffuse in the plane direction of the diversion layer while penetrating in the vertical direction. Among them, the diffusion capacity of the diversion layer in the plane direction is also an important ind...

AI Technical Summary

Problems solved by technology

However, this composite diversion layer still has the following problems: because its principle is to temporarily store liquid through the material itself, the material of this diversion layer must reach a certain thickness, and store liquid through the vertical three-dimensional thickness, so that The amount of fiber used in the material is large and the cost is high

In addition, the special fiber mesh structure in the material has a relatively weak diversion and diffusion effect on the liquid, and the liquid cannot be completely absorbed by the absorbent core. In the case of the same volume, more liquid will still be stored in the diversion layer, reducing the Dryness and comfort of diapers

[0005] It can be seen that the existing diapers have never been able to break through this design limitation, and the diversion effect of the diversion layer cannot be greatly improved.

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