Twisted carpet yarn improvements
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Solution Overview
Problem
Current methods for creating striated patterns in solution dyed yarn carpets are impractical and result in imperfections when exposed to stains or bleaches, as they require restringing creels or piece dyeing, which is cumbersome and not suitable for solution dyed yarns.
Innovation Solution
A method of twisting yarns with a twist differential, using high and low twist yarns, and varying twist rates and orientations to create a striated look, which can be achieved through a twister or warper, allowing for solution dyed yarns to be resistant to stains and bleaches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If piece dyed or batch dyed yarn processes are used to provide striated look, then design flexibility is improved, but susceptibility to stains and bleaches worsens
Solution Approach 1:
The yarn is dyed with disperse dyes during the yarn manufacturing process before tufting, so that the color is permanently embedded in the yarn structure. This preliminary dyeing action eliminates the need for post-tufting dyeing operations and provides inherent stain resistance, as the color is part of the yarn itself rather than a surface coating.
Solution Approach 2:
The patent changes the dyeing method from piece dyeing or batch dyeing to disperse dyeing during yarn manufacturing. This parameter change in the dyeing process (using disperse dyes at yarn level) provides both the desired striated appearance and improved resistance to stains and bleaches, as the dye is integrated into the yarn fibers.
2Adaptability or versatility
If creel technology is used to provide striated patterned carpets, then pattern variety is improved, but manufacturing complexity worsens
Solution Approach 1:
The striated patterns are created during the yarn manufacturing process through disperse dyeing techniques, rather than requiring complex creel restructuring during carpet production. This preliminary pattern creation simplifies the carpet manufacturing process while maintaining pattern variety.
Solution Approach 2:
The patent changes the approach from mechanical pattern creation (creel restructuring) to chemical pattern creation (disperse dyeing during yarn manufacturing). This parameter change eliminates the need for complex creel operations while achieving the desired striated patterns.
3Shape
If multiple yarns are twisted together with twist differential, then aesthetic appearance is improved, then durability is improved
Solution Approach 1:
The patent applies different twist rates to different yarns within the same carpet construction. By giving each yarn a specific twist rate tailored to its material properties and aesthetic requirements, the invention achieves superior appearance and durability without requiring complex overall system changes.
Solution Approach 2:
The invention combines multiple yarns with different twist rates, materials, and properties into a composite carpet structure. This composite approach allows each yarn to contribute its specific advantages (aesthetic or durability) while working together in the twisted construction, achieving overall performance enhancement.
4Object-affected harmful factors
If solution dyed yarns are used, then resistance to stains and bleaches is improved, but design flexibility worsens
Solution Approach 1:
The disperse dyeing process is performed during yarn manufacturing, permanently embedding the color in the yarn structure before the carpet is made. This preliminary action provides inherent stain resistance while the selected disperse dyes offer a wide range of color options, maintaining design flexibility.
Solution Approach 2:
The invention combines solution-dyed yarns with disperse dyes in a twisted multi-yarn construction. This composite structure maintains the stain resistance of solution-dyed yarns while using combinations of different colored yarns to achieve design variety and aesthetic flexibility.
Data Source
AI summary
Different twisting techniques are employed for joining yarn to direct through a single needle of a tufting machine. Additionally, a more durable carpet, for at least some embodiments, is provided than would be expected. Furthermore, twist differential and luster differential amongst yarns are utilized to provide carpets.