PET Cable Wrapping Tape for Flexible Tight-Bend Harnessing
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Solution Overview
Problem
Existing cable wrapping tapes are stiff and have high material costs due to thick band thickness, making them difficult to wrap around cables, especially at tight bends, and adding unnecessary weight to the wrapped cable sets.
Innovation Solution
A cable wrapping tape with warp threads sized between 20 and 40 dtex and weft threads sized smaller than warp threads, made of PET plastic filament yarns, with an adhesive coating, allowing for manual and automatic application and improved flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If larger warp threads (50 dtex and more) are used, then the tape has sufficient strength, but the tape becomes stiff and difficult to wrap around tight bends
Solution Approach 1:
The patent applies parameter changes by precisely controlling the warp thread size within the range of 20-40 dtex, which is smaller than conventional tapes (50 dtex and more). This parameter optimization provides a balance between strength and flexibility, allowing the tape to be pliant enough for tight bends while maintaining sufficient tear strength through the combination of optimized thread count (20-35 threads per cm) and adhesive coating.
2Strength
If larger warp threads are used to ensure strength, then the tape has adequate durability, but the band thickness increases leading to higher material costs and added weight
Solution Approach 1:
The patent optimizes multiple parameters simultaneously: warp thread size (20-40 dtex), weft thread size (smaller than warp threads), and thread count (20-35 per cm). This multi-parameter optimization achieves the required strength with reduced band thickness compared to conventional tapes using 50 dtex and larger threads, thereby reducing both material costs and added weight.
Solution Approach 2:
The patent uses a composite structure combining PET plastic filament yarns for both warp and weft threads, with the weft threads being smaller than warp threads. This composite approach with differentiated thread sizes creates an optimized fabric structure that provides sufficient strength with reduced thickness and weight.
3Ease of operation
If smaller warp threads (20-40 dtex) are used, then the tape becomes flexible and thinner, but the strength may be reduced
Solution Approach 1:
The patent compensates for the reduced individual thread strength by optimizing the thread count to 20-35 threads per cm and controlling the weft thread size to be smaller than warp threads. The adhesive coating also contributes to the overall strength. This multi-parameter optimization maintains sufficient tear strength while achieving the desired flexibility and reduced thickness.
Data Source
AI summary
The present disclosure relates to a cable wrapping tape, including a band-shaped support (1) made of a textile fabric with warp threads (2) and weft threads (3) made of a PET plastic. The warp and weft threads (2, 3) are made of filament yarns, the size of the weft threads (3) being larger than the size of the warp threads (2). An adhesive coating is applied to the support (1). The size of the warp threads (2) is larger than/equal to 20 dtex and smaller than/equal to 40 dtex.