Warp Knitted Fabric Structure for Sweat-Reducing Seat Surfaces
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Warp knitted fabrics used as seat materials face issues with stickiness and dampness during sweating, and existing solutions either fail to address these problems effectively or result in increased weight.
Innovation Solution
A warp knitted fabric is manufactured using a warp knitting machine with at least two guide bars, featuring a denbigh stitch or cord stitch texture with an insertion yarn exposed intermittently on the sinker-loop-side surface, underlapped in the same direction as the base yarn, forming fine concavities and convexities to reduce contact area and improve air permeability, while using a different yarn type or color to create a pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a solid structure warp knitted fabric with fewer loops per side is used to reduce contact surface area and prevent stickiness, then stickiness and dampness are resolved, but the fabric weight increases
Solution Approach 1:
The patent applies local quality by creating an asymmetric loop structure where only one side of the fabric has a smaller loop formation rate (0.6-1.4 loops per needle per course) while the other side maintains normal loop formation. This localized structural modification reduces the contact surface area on the skin-contacting side without requiring the entire fabric to be redesigned, thereby preventing stickiness and dampness while minimizing weight increase.
Solution Approach 2:
The patent inverts the conventional approach by making the skin-contacting side have fewer loops rather than more loops. Traditionally, tighter knit structures were used to prevent stickiness, but this patent achieves the opposite effect by creating a more open structure on the contact side, which reduces the actual contact surface area between the fabric and skin, thereby preventing stickiness without increasing weight.
2Object-affected harmful factors
If a hairy warp knitted fabric with pile fuzz is used to provide air permeability, then dampness is reduced, but the fabric weight increases
Solution Approach 1:
The patent creates a porous structure through the asymmetric loop formation where the side with fewer loops naturally forms larger voids and channels. This porous structure enhances air permeability and allows moisture vapor to escape, reducing dampness sensation. The porosity is achieved through the knitting pattern itself rather than adding heavy pile or fleece layers, thereby maintaining lightweight properties.
3Shape
If insertion yarns are underlapped to form patterns, then aesthetic appearance is improved, but the fabric becomes heavier and less effective at resolving stickiness
Solution Approach 1:
The patent applies local quality by positioning insertion yarns specifically on the non-contact side of the fabric (the side with normal or higher loop formation rate). This allows the insertion yarns to create aesthetic patterns and designs without interfering with the stickiness-preventing asymmetric loop structure on the skin-contacting side. The patterns are localized to areas where they provide aesthetic value without compromising functional performance.
Data Source
AI summary
A warp knitted fabric to be used for an epidermis material to avoid stickiness and dampness due to sweating when one is seated for a long time, and which is light-weight and provides superior functionality; has a denbigh stitch texture or a cord stitch textureformed by supplying a base yarn by a front guide bar of a warp knitting machine having at least two guide bars, supplying an insertion yarn by a guide bar rearward of the front guide bar to knit an insertion texture, and knitting the insertion yarn underlapping the insertion yarn in the same direction and by an amount corresponding to the same number of needles as the underlapping of the base yarn supplied by the front guide bar, whereby the insertion yarn is exposed at a sinker-loop-side surface of a warp knitted fabric intermittently in a warp direction.