Knitted Fabric Float Thread Design Versatility
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Solution Overview
Problem
Existing methods for producing single-surface knitted fabrics with float threads as design elements are limited by the requirement that float threads must have similar strength to the basic knitted fabric and cannot significantly differ in strength over multiple stitches, restricting design possibilities.
Innovation Solution
A method where the float thread is held by being pinched between stitches of the basic knit without forming tuck loops, allowing it to differ significantly in strength, using an intarsia thread guide or normal thread guides with shifts, and enabling the float thread to be moved to create various visible patterns and intersections, with options for different thicknesses and materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If float threads are formed by tuck loops or stitches in single-surface knitted fabrics, then the float threads can be held in the fabric structure, but the strength of the float thread must roughly correspond to the gauge of the machine, limiting the ability to use threads with significantly different strengths
Solution Approach 1:
The patent extracts the float thread from the traditional stitch formation process and holds it separately between stitches of the basic knit without forming tuck loops or stitches with the float thread itself. This allows the float thread to be independent of the machine gauge requirements that constrain traditional stitch-based float threads.
Solution Approach 2:
The patent introduces an intermediary holding mechanism where the float thread is pinched between stitches of the basic knit rather than being formed through needle stitches. This intermediary approach allows threads of significantly different strengths to be held without requiring the float thread to match the machine gauge.
2Adaptability or versatility
If float threads are used to create design elements in knitted fabrics, then aesthetic variety is improved, but the float threads are restricted to horizontal orientations and cannot float over multiple stitches in varied directions
Solution Approach 1:
The patent employs dynamically adjustable thread guides that can be shifted to different positions and orientations. This allows float threads to be guided in various directions, float over multiple stitches, and create complex patterns while maintaining ease of operation through machine-controlled guide positioning.
Solution Approach 2:
The patent creates a universal float thread system where a single float thread can serve multiple functions: creating horizontal designs, diagonal patterns, and connecting different sections of the fabric. The thread guide system provides multi-functionality by accommodating various thread paths and orientations from a single operational framework.
3Adaptability or versatility
If weft threads are floated over every second stitch or individual stitches on the visible side, then the fabric structure is maintained, but the design possibilities are limited by the fixed floating patterns
Solution Approach 1:
The patent performs preliminary actions by transferring stitches to opposite needles before inserting the float thread, and then hanging the stitches back on the original needles after float thread insertion. This preliminary stitch reassignment enables the float thread to be inserted over the entire width or selected portions without floating individual stitches, simplifying the process while maintaining precision.
Data Source
Figure 1a
Figure 1b
Figure 2a
AI summary
The method involves forming a single-surface basic knit (11) in which the float threads (12) are inserted, in the row of stitches. The float threads on the first side knit fabric are transferred with a thread guide to a starting position, to be visible on the second side knit fabric. The stitches are transferred corresponding to the desired width of the second knitted fabric on the visible side float thread portion. The back slopes of stitches are transferred to the original needles and the basic knit stitch rows are formed. An independent claim is included for a knitted fabric.