Knitted Fabric Double Stitch Gap Control via Sinker Loop
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Solution Overview
Problem
Conventional knitted fabrics with double stitches tend to widen when pulled in the knitting width direction, leading to a divided appearance and degraded quality due to the contraction of double stitches and the resulting yarn displacement.
Innovation Solution
A knitting method where one stitch is continuously knitted with an adjacent stitch on the opposite side, followed by knitting the other stitch, and then forming double stitches by overlapping them, ensuring direct connection through a sinker loop to maintain stitch uniformity and prevent gap widening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If double stitches are formed by overlapping adjacent stitches using conventional knitting method, then double stitch structure is achieved, but gap between double stitch and adjacent stitch widens when pulled in knitting width direction
Solution Approach 1:
The invention applies preliminary action by knitting the adjacent stitch (stitch 4 or 6) before knitting the other stitch (stitch 3 or 5) that will form the double stitch. This preliminary knitting ensures that the adjacent stitch is already in position and properly formed before the overlapping occurs, preventing gap widening when the fabric is pulled. The sinker loop is formed in advance to connect the stitches, maintaining stable spacing between double stitches and adjacent stitches throughout the knitting process and after stretching.
2Shape
If double stitches are formed by overlapping stitches, then double stitch pattern is created, but yarn is led out to sinker loop causing stitch size variation
Solution Approach 1:
The adjacent stitch is knitted in advance before the other stitch, ensuring proper yarn positioning and sinker loop formation before the overlapping occurs. This preliminary action prevents yarn from being led out to the sinker loop during the overlapping process, maintaining uniform stitch sizes throughout the fabric.
Solution Approach 2:
The invention changes the knitting sequence parameter, specifically knitting the adjacent stitch before the other stitch. This parameter change in the knitting process ensures that the yarn is properly positioned and the sinker loop is formed correctly, preventing stitch size variation while maintaining the double stitch pattern.
3Shape
If conventional knitting method is used for double stitches, then double stitch formation is achieved, but fabric appears divided when worn
Solution Approach 1:
By knitting the adjacent stitch before the other stitch, the invention ensures that the sinker loop connecting the double stitch and adjacent stitch is properly formed in advance. This maintains consistent fabric tension and prevents the divided appearance that occurs when yarn is led out to the sinker loop during or after knitting.
Solution Approach 2:
The invention changes the knitting sequence parameter to improve fabric appearance quality. By knitting the adjacent stitch first, the fabric maintains uniform tension and structure, preventing the divided appearance when worn, while still achieving the desired double stitch formation.
Data Source
Figure 1(A)~1(D)
Figure 2(A)~2(B)
Figure 3
AI summary
To provide a knitted fabric with double stitches such that the knitted fabric is not divided at the position of the double stitch, and a knitting method thereof. A knitted fabric with a double stitch formed by overlapping one stitch 2 over another stitch 3 of the two stitches 2, 3 adjacent in a knitting width direction is knitted using a flat knitting machine, capable of transferring stitches to between front and back needle beds. In this case, the other stitch 3 is knitted after continuously knitting the one stitch 2 and a stitch 4 (adjacent stitch) adjacent on a side opposite to the one stitch 2 with respect to the other stitch 3. The double stitch is formed by overlapping the one stitch 2 and the other stitch 3. Through such knitting, the adjacent stitch 4 is directly connected, through a sinker loop X, to the one stitch 2 forming the double stitch, whereby the sinker loop X does not appear as if stretched, and the knitted fabric is less likely to be divided.