Laminated cloth
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Solution Overview
Problem
Current laminated cloths for garments face issues with windbreaking ability, water resistance, and water vapor permeability, as they often suffer from tangling, abrasion, and a sticky feel due to the use of tricot knitted fabrics on the back surface, which degrades when encountering buttons or hook-and-loop fasteners.
Innovation Solution
A laminated cloth configuration featuring a front surface layer, a middle layer, and a back surface layer, where the front layer is a woven or knitted fabric, the middle layer is a resin film or non-woven fabric, and the back surface layer is a circular knitted fabric with knit stitches and tuck stitches, using filament yarn of 60 dtex or less, and specific tuck stitch densities to enhance separability and resistance to tangling and abrasion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a tricot knitted fabric with a rugged structure is used for the back surface, then separability from the skin is improved, but the fabric is likely to be tangled with buttons and hook-and-loop fasteners, causing degradation due to abrasion
Solution Approach 1:
The invention changes the knitting structure parameters by introducing tuck stitches at specific positions (every 10th stitch in the wale direction) in the circular knitted fabric. This parameter modification creates a rugged surface structure that improves separability from skin while reducing the tendency to tangle with fasteners compared to conventional tricot structures
Solution Approach 2:
The invention creates a composite structure by combining the circular knitted fabric with a resin film layer and front fabric layer. The resin film layer (5-20 μm thick) acts as a protective intermediary that reduces direct abrasion on the knitted fabric while maintaining the rugged surface structure's separability benefit
2Weight of moving object
If the back surface fabric is made thin and light to avoid increase in thickness and mass, then weight is reduced, but the fabric may give a sticky feel upon contact with the skin and increase the sticky feel of the resin film inside the fabric
Solution Approach 1:
The invention optimizes the mass per unit area of the circular knitted fabric to a specific range (30-60 g/m²) and controls the resin film thickness (5-20 μm) to achieve the right balance between lightness and non-sticky feel. The tuck stitch structure provides sufficient surface ruggedness to prevent sticking without requiring excessive fabric weight
Solution Approach 2:
The resin film layer serves as an intermediary between the knitted fabric and the skin, modifying the surface properties to reduce direct skin contact with potentially sticky fabric surfaces while maintaining breathability and comfort
3Reliability
If a conventional laminated cloth structure is used, then windbreaking and water-resistant properties are achieved, but the resin film is easily peeled or damaged and performances deteriorate
Solution Approach 1:
The invention uses a circular knitted fabric with a rugged surface structure that provides flexibility and durability. The knitted structure's inherent elasticity and loop configuration allow the resin film to be securely anchored, reducing peeling and damage while maintaining windbreaking and water-resistant properties
Solution Approach 2:
The invention creates a multi-layer composite structure consisting of front fabric, resin film, and circular knitted back fabric. This composite design distributes mechanical stresses across layers, protecting the resin film from direct damage while maintaining the required protective functions
Data Source
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AI summary
Provided is a laminated body, said laminated body being a laminated cloth the back surface of which has excellent properties against tangling and abrasion and good separability from the skin and which has a good texture and a favorable appearance and is comfortable to wear when made into clothing. The laminated cloth includes a front surface layer, a middle layer and a back surface layer, said layers being stacked one on another, wherein: the front surface layer comprises one member selected from the group consisting of a woven fabric, a knitted fabric and a non-woven fabric; the middle layer comprises a resin film or a non-woven fabric; and the back surface layer comprises a circular knitted fabric in which filament yarn of 60 dtex or less is used at least in part thereof and which is configured from knitting stitches and tack stitches, 9 to 72 said tack stitches being disposed per area of 12 wales×12 courses.