Three-layer composite fiber material and preparation method, device and application thereof

Abstract

The invention relates to a three-layer composite fiber material and a preparation method, device and application thereof. The composite fiber material comprises a bottom layer, a filling layer and a surface layer, wherein the bottom layer, the filling layer and the surface layer are compounded through bonding parts, the surface layer comprises a 3D convex part and a 3D concave part, wherein the surface layer is provided with an opening penetrating through the surface layer at the 3D protruding part, the filling layer fills a cavity between the 3D protruding part of the surface layer and the bottom layer, and the three layers of materials are mutually bonded at the bonding part and keep non-bonded contact at the part outside the bonding part. The non-adhesive solid 3D protrusions formed bythe three layers of composite fiber materials can effectively reduce the contact area in the using process, increase the layering stereoscopic impression and keep good elasticity in the using process,the layering problem is solved by improving the layer and strength between the layers, the dryness, breathability, attractiveness, comfort and experience are enhanced, liquid back-seepage is effectively reduced, and thin excrement contact and skin attachment are effectively reduced.

Description

technical field [0001] The invention belongs to the field of special-performance fiber products and composite materials, and specifically relates to a three-layer composite fiber material and its preparation method, device and application. Background technique [0002] In the prior art, single-layer embossed and perforated fiber products have concave-convex cavity shapes and certain three-dimensional effects, but single-layer embossed and perforated fiber products have the following defects and unsolved problems: A. Single-layer embossed and perforated fiber products The three-dimensional retention is very poor, and the thickness and three-dimensional effect will be greatly reduced when it is made into a roll material; B. Especially when it is used to make diapers or sanitary napkins, due to the process of stretching and the use of glue to bond to other materials When it is on, it will greatly reduce the three-dimensional effect; C. It will also affect the breathability and ...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies in the prior art, the present invention provides a three-layer composite fiber material and its preparation method, device, and application. The three-layer composite fiber material can effectively solve the problems in the existing single-layer or double-layer technology during use. There are problems such as poor three-dimensional retention, poor deformation resistance, too hard, poor comfort, and poor elasticity. The three-layer composite fiber material improves the layer between layers by increasing the three-dimensional effect, elasticity and deformation resistance. and strength to solve the layering problem, further reduce the contact area, improve air circulation performance, increase dryness, breathability, comfort, aesthetics and experience, effectively reduce liquid rewet and effectively reduce loose stool contact and adhesion to the skin, reduce Skin allergies

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