Composite Multifilament Structure to Prevent Textile Shine Wear
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Solution Overview
Problem
Existing synthetic fibers used in clothing and textiles suffer from shiny phenomena due to wear and friction over time, leading to deterioration in surface quality, texture, and flexibility, while existing solutions either harden the texture or reduce durability.
Innovation Solution
A composite fiber structure with segments A and B, where segment B has a smaller cross-sectional area and is formed in a side-by-side or eccentric core-sheath type, combined with a sea-island composite structure, to create a multifilament with fine fibers that inhibit shiny phenomena and enhance flexibility and water-repellency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fibers with high rigidity and large fineness are adopted for woven fabrics to enhance durability, then wear resistance and structural stability are improved, but tactile sensation and flexibility deteriorate
Solution Approach 1:
The fiber is divided into two distinct segments: segment A (larger cross-sectional area) providing mechanical strength and durability, and segment B (smaller cross-sectional area) providing flexibility and softness. This segmentation allows each segment to contribute its advantageous properties to the composite fiber structure.
Solution Approach 2:
Different parts of the fiber cross-section are assigned different functions: the larger segment A provides structural integrity and wear resistance, while the smaller segment B provides flexibility and tactile comfort. This local differentiation of properties resolves the contradiction between durability and flexibility.
2Object-affected harmful factors
If smoothing agents such as silicone and polyethylene wax are added in post-processing to inhibit shiny phenomenon, then fiber deformation is reduced, but texture is hardened and durability is deteriorated
Solution Approach 1:
The fiber structure is designed in advance with segments of different sizes that inherently resist shiny phenomenon through their geometric configuration. This preliminary structural design eliminates the need for post-processing smoothing agents, thereby preserving texture softness and durability.
Solution Approach 2:
The invention converts the potential harm of fiber deformation into a benefit by designing a structure where the smaller segment B can deform more easily than segment A, absorbing deformation energy and preventing the flattening that causes shiny phenomenon, thus protecting the overall fiber integrity.
3Object-affected harmful factors
If a low melting point polymer is disposed inside a polyester fiber to absorb frictional heat, then fiber deformation due to melting is inhibited, but the fiber structure becomes complex and manufacturing difficulty increases
Solution Approach 1:
Instead of changing the material composition to include low melting point polymers, the invention changes the geometric parameters of the fiber structure by creating segments with different cross-sectional areas. This parameter-based solution achieves heat absorption through the larger segment A protecting the smaller segment B, without requiring complex material compositions.
4Ease of operation
If voids between core yarn and sheath yarn are formed to exhibit soft texture, then tactile sensation is improved, but crushing of voids due to pressing occurs and shiny phenomenon is not fully inhibited
Solution Approach 1:
The fiber is segmented into different size portions where the smaller segment B creates micro-voids and irregularities on the fiber surface. These segmented structures maintain tactile softness while being more resistant to crushing compared to large voids, as the smaller features can deform and recover more easily.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The composite fiber structure maintains flexibility and tactile sensation while preventing surface deterioration, and achieves high water-repellency through fine voids and complex irregularities formed by crimps, improving durability and texture.
Implementation Method 1
frictional heat generated by abrasion with a floor or the like is absorbed by an endothermic action due to melting of the low melting point polymer in a core part before the polyester melts
Implementation Method 2
a so-called shiny phenomenon occurs in which gloss increases at a portion worn over time, and a surface quality of a textile is deteriorated. Such a shiny phenomenon occurs when an irregularity structure on a textile surface is flattened due to deformation or wear of fibers and light reflection increases.
Data Source
AI summary
A composite fiber is provided in which two types of segments A and B are present in a fiber transverse section, where the segment B has a cross-sectional area smaller than a cross-sectional area of the segment A, and is formed of two types of polymers combined in a side-by-side type or an eccentric core-sheath type; and where a multifilament is composed of two types of filaments A and B, in which one or more of the filaments B are present between any two of the filaments A in the multifilament; and where a woven or knitted fabric is subjected to water repellent finish and includes a multifilament composed of two types of filaments A and B, in which one or more of the filaments B are present between any two of the filaments A in the multifilament.