Composite False Twisted Yarn for Garment Bulkiness and Softness
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing polyamide fibers struggle to balance stretchability, bulkiness, and softness, leading to inadequate performance in garments due to insufficient crimp expression, inhibited stretchability, and poor dyeability.
Innovation Solution
A composite false twisted yarn is developed, comprising a latent crimp polyamide fiber A and a non-latent crimp polyamide fiber B, with a high adjacent filament group ratio in fiber A and a specific elongation difference between the two fibers, to create a yarn that is both stretchable and textured.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If polyamide fibers with different compositions are combined into side-by-side type to improve softness, then softness is improved, but bulkiness becomes insufficient due to single crimp form
Solution Approach 1:
The invention combines two different polyamide fibers (first polyamide fiber and second polyamide fiber) into a composite false twisted yarn. This composite structure allows the yarn to exhibit both softness from the polyamide composition and bulkiness from the false twist crimp structure, resolving the contradiction between softness and bulkiness
Solution Approach 2:
The invention changes the structural parameters by creating a false twisted yarn with specific twist levels and crimp characteristics. The false twist process transforms the single crimp form into a multi-directional crimp structure, increasing bulkiness while maintaining the softness provided by the polyamide fiber composition
2Shape
If mixed fiber textured yarn is used to obtain bulkiness, then bulkiness is improved, but stretchability is inhibited due to mixing of single filaments
Solution Approach 1:
The invention segments the yarn structure into distinct fiber components (first polyamide fiber and second polyamide fiber) that are twisted together in a false twisted yarn structure. This segmentation allows each fiber type to maintain its individual stretchability characteristics while contributing to overall bulkiness through the composite structure
Solution Approach 2:
By creating a composite false twisted yarn from two different polyamide fibers, the invention achieves bulkiness through the composite structure while preserving stretchability. The false twist crimp structure provides bulkiness without the need for mixing single filaments that would inhibit stretchability
3Shape
If side-by-side type fiber is used to obtain bulkiness, then bulkiness is improved, but dyeability deteriorates due to difference in dyeability between polyester and polyamide
Solution Approach 1:
The invention changes the material composition parameter by using two different polyamide fibers instead of combining polyester and polyamide. This ensures uniform dyeability across all fibers in the composite yarn while still achieving bulkiness through the false twisted yarn structure
Solution Approach 2:
The composite false twisted yarn is formed using two different polyamide fibers, which maintains consistent dyeability characteristics throughout the yarn. This resolves the dyeability issue that arises from mixing polyester and polyamide, while the false twist structure provides the desired bulkiness
Data Source
AI summary
The purpose of the present invention is to provide a composite false twisted yarn and a woven fabric having an excellent feeling of bulkiness and softness in addition to having excellent stretchability and being particularly suitable for use in clothing, and also to provide clothing using the same. The present invention provides a composite false twisted yarn comprising a polyamide fiber A and a polyamide fiber B, wherein the polyamide fiber A is a latent crimp yarn, the polyamide fiber B is not a latent crimp yarn, and the ratio of adjacent filament groups in the polyamide fiber A is 50% or more.