Bio-based Adhesive Tape with Composite Yarns for Cable Wrapping
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Solution Overview
Problem
Adhesive tapes for wrapping cables in automobiles require high abrasion resistance and temperature resistance while being solvent-resistant, but existing bio-based polymer fiber solutions are costly and difficult to tear manually, limiting their practicality and recycling potential.
Innovation Solution
The adhesive tape features a textile substrate band composed of multicomponent weft yarns and/or multicomponent warp yarns, primarily made from bio-based polymer filaments, allowing for high abrasion resistance and manual tearability through the use of monocomponent warp filaments and double or triple weft yarns, which can be produced more cost-effectively and with improved resource conservation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If thick polyamide yarns (at least 280 dtex) are used to achieve high abrasion resistance (abrasion class E), then abrasion resistance is improved, but production costs increase and manual tearability is lost
Solution Approach 1:
The patent uses composite yarns combining different fiber types (polyester and polyamide) in specific ratios within the weave structure. This creates a composite material system where the polyester provides baseline durability and the polyamide enhances abrasion resistance, achieving class C or D performance without requiring single-material thick yarns that would increase cost and reduce tearability
Solution Approach 2:
The patent applies different yarn types and thicknesses to different positions within the textile substrate band. The weave structure incorporates varied yarn compositions locally to optimize abrasion resistance in high-wear areas while maintaining overall cost-effectiveness and manual tearability through strategic material distribution rather than uniform thick construction
2Ease of manufacture
If bio-based polymer fibers are used to improve resource conservation and reduce cost, then manufacturing cost and environmental impact are improved, but abrasion resistance is insufficient
Solution Approach 1:
The patent creates composite textile substrates combining bio-based polymer fibers with conventional synthetic fibers. This composite approach allows the bio-based portion to provide cost and environmental benefits while the combined fiber system achieves the required abrasion resistance through synergistic material properties and optimized weave construction
Solution Approach 2:
The patent modifies the textile substrate parameters by adjusting fiber composition ratios, yarn thickness, and weave density to balance bio-based content with performance requirements. By changing these parameters systematically, the patent achieves adequate abrasion resistance while maximizing the use of cost-effective bio-based materials
3Adaptability or versatility
If the adhesive tape is made entirely from bio-based polymers to improve recyclability, then recycling capability is improved, but abrasion resistance and durability are compromised
Solution Approach 1:
The patent employs composite construction with multiple fiber types including bio-based polymers combined with conventional polymers. This composite approach enables the adhesive tape to maintain recyclability through the bio-based portion while the combined material system provides the necessary abrasion resistance and durability that single-material bio-based tapes cannot achieve alone
Data Source
AI summary
The invention relates to an adhesive tape, in particular wrapping tape, for sheathing automotive cables, having a textile support and at least one adhesive coating layer applied to one side or both sides of the textile support, and the textile support being manufactured entirely or partially from bio-based polymer fibers and/or polymer yarns, characterized in that the textile support is constituted of multi-weft yarns and/or multi-warp yarns.