3D Knitted Covering Material for Natural Heather Seat Fabrics
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Solution Overview
Problem
Existing three-dimensional knitted materials face challenges in achieving high designability with a natural heather effect due to obvious color changes from stitch to stitch, making it difficult to impart a seamless, natural pattern.
Innovation Solution
A covering material comprising a three-dimensional knitted structure with 30% or more stitches formed of a composite yarn containing two or more different colored yarns, arranged at an angle of 20-80 degrees with adjacent stitches, and featuring openings of 0.3-2.5 mm, enhancing the natural heather appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If colored yarns are changed by needle selection or pattern changing to achieve designability, then designability is improved, but color changes become excessively obvious from stitch to stitch, destroying the natural heather effect
Solution Approach 1:
The patent applies parameter changes by controlling the angle between stitches formed of composite yarn and adjacent stitches to be within 20-80 degrees. This angular parameter control ensures that color transitions are diffuse and natural rather than abrupt, achieving both designability and a natural heather effect simultaneously
Solution Approach 2:
The patent uses composite yarns containing two or more different colored yarns twisted together as the fundamental material. This composite structure allows multiple colors to be integrated within single stitches, enabling gradual color transitions and natural heather patterns while maintaining design variability
2Adaptability or versatility
If individual stitches are made large to facilitate pattern creation, then designability is improved, but the natural heather effect is lost due to obvious color changes between stitches
Solution Approach 1:
The patent applies local quality by ensuring that within the region of each stitch, the composite yarn creates a specific angular relationship (20-80 degrees) with adjacent stitches. This localized angular control ensures that color transitions occur naturally within each stitch region rather than between discrete large stitches, maintaining both designability and manufacturing precision of the heather effect
Data Source
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AI summary
The present invention provides a covering material for a seat sheet of a vehicle or furniture, or for an interior material of a vehicle, wherein a surface layer knitted fabric is constituted by a composite yarn comprising two or more differing types of colored yarn, such that the covering material exhibits excellent design properties with a textured appearance. A covering material according to the present invention comprises a three-dimensional knitted material that is constituted by a surface layer knitted fabric, a back layer knitted fabric, and a connecting yarn which connects the surface layer knitted fabric and the back layer knitted fabric, said covering material being characterized in that: not less than 30% of stitches included in the surface layer knitted fabric are formed from a composite yarn that includes two or more differing types of colored yarn; and in the not less than 30% of stitches that are formed by the composite yarn, a stich formed by the composite yarn and a stitch adjacent thereto in the course direction and/or wale direction form an angle of 20-80 degrees.