Warp Knit Weft Inlay Floats for Asymmetric Zonal Properties
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Solution Overview
Problem
Traditional warp knit components lack the ability to change the direction of weft inlaid yarns in a material flow direction, limiting the potential for zonal properties and visual arrangements.
Innovation Solution
The warp knit component includes at least one front weft inlaid yarn that changes direction in the material flow direction by extending through loops in offset warp knit courses and forming floats on the technical face, allowing for asymmetric patterning and the use of different yarn types on opposite sides.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional weft inlaid yarns extend through every knit loop at every wale, then the knit structure maintains uniformity and structural integrity, but the ability to change direction in material flow direction is lost and asymmetric patterning cannot be achieved
Solution Approach 1:
The weft inlaid yarn path is segmented into distinct sections: some portions extend through knit loops while other portions float over the technical face without engaging loops. This segmentation allows the yarn to change direction in the material flow direction while maintaining structural integrity in regions where it does engage loops.
Solution Approach 2:
Different sections of the weft inlaid yarn have different engagement characteristics with the knit loops. In some regions, the yarn extends through every loop it crosses, providing structural stability. In other regions, it floats over loops, enabling direction changes and asymmetric patterning. This local variation in engagement quality resolves the contradiction between uniformity and adaptability.
2Adaptability or versatility
If weft inlaid yarns uniformly extend orthogonal to material flow direction, then manufacturing simplicity is maintained, but zonal properties and visual arrangement variety are limited
Solution Approach 1:
The weft inlaid yarn configuration is made dynamic by allowing it to alternate between extending through loops and floating over loops as it progresses through the knit structure. This dynamic path configuration enables the creation of zonal properties and varied visual arrangements without requiring complex manufacturing equipment, as the changes are achieved through the yarn's engagement pattern rather than equipment complexity.
Data Source
AI summary
A warp knit component that includes a first front weft inlaid yarn that extends through one or more loops in a first warp knit course, and after extending through the one or more loops, the first front weft inlaid yarn extends as a float positioned on a technical face or front side of the warp knit component. After extending as the float, the first front weft inlaid yarn extends through one or more loops in a second warp knit course that is offset in the material flow direction from the first warp knit course. Using floats facilitates the advancement of the first front weft inlaid yarn in the material flow direction.