Laminated fiber structure and waterproof moisture-permeable apparel

By forming a co-continuous or island-phase continuous resin layer on woven or knitted fabrics, the problem of reduced waterproofness of waterproof and breathable materials after long-term use is solved, and the recycling efficiency is improved. It is suitable for clothing such as sportswear, uniforms and raincoats.

CN122139058APending Publication Date: 2026-06-02TORAY INDUSTRIES INC
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Patent Information

Application Number
CN202480070530.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-11-21
Filing Date
2024-11-12
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing waterproof and breathable materials lose their waterproofness after prolonged use and have low recycling efficiency, making it difficult to effectively classify and recycle the surface material, waterproof and breathable membrane, and inner layer material.

Method used

The structure employs a fiber laminate structure with a non-porous resin layer on a woven or knitted fabric. The resin layer contains a combination of polyamide and polyamide-based elastomer or polyester and polyester-based elastomer, forming a co-continuous or island-phase continuous island structure. A combination of polyamide 6 and polyamide 6-based elastomer is preferred to improve moisture permeability and water resistance.

Benefits of technology

It maintains excellent waterproofness and breathability even after prolonged use, and improves recycling efficiency, making it suitable for clothing such as sportswear, uniforms, and raincoats.

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Abstract

The present invention addresses the problem of providing a fiber laminate structure having a water-proof and moisture-permeable function and a water-proof and moisture-permeable garment, the fiber laminate structure having not only excellent moisture permeability and water repellency, but also excellent water repellency (wet heat resistance) after a long period of time, and having excellent recycling efficiency and high practicability. This fiber laminate structure has a woven knitted fabric and a nonporous resin layer on the woven knitted fabric, the resin layer containing a resin A and an elastomer B, the resin A and the elastomer B being either a combination of a polyamide and a polyamide-based elastomer or a polyester and a polyester-based elastomer, the phase of the resin A and the phase of the elastomer B are of a co-continuous structure or a sea-island structure with continuous island phases.
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