Laminated Binding Tape for Abrasion Resistance and Manual Tearing
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Solution Overview
Problem
Conventional binding tapes for electrical wires lack both high abrasion resistance and good manual tearing properties, failing to meet the demands of automotive wiring applications where they need to withstand repeated scraping abrasion tests and be easily cut by hand without specialized tools.
Innovation Solution
A binding tape with a substrate layer comprising a resin layer and a non-woven fabric with specific fused sections, and an adhesive layer, configured to have a tearing load in the width direction of 5-25 N, which enhances both abrasion resistance and manual tearing properties by incorporating fused sections with different shapes and areas on the non-woven fabric surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a polyethylene terephthalate (PET) knitted fabric or resin film-nonwoven fabric composite is used as substrate, then abrasion resistance is improved, but manual tearing properties deteriorate
Solution Approach 1:
The nonwoven fabric is provided with localized fused sections that create specific weak points for manual tearing, while the overall fabric structure maintains high abrasion resistance. The fused sections are formed by heating and pressing to melt and bond fibers in specific patterns, creating controlled tear propagation paths without compromising overall material strength.
Solution Approach 2:
The substrate is constructed as a composite of resin film and nonwoven fabric, combining the abrasion resistance of the resin film with the manual tearability of the engineered nonwoven fabric. The resin layer provides protective coating while the nonwoven fabric base with fused sections enables easy tearing.
2Ease of manufacture
If conventional binding tape structures are used, then manufacturing simplicity is maintained, but both abrasion resistance and manual tearing properties are insufficient
Solution Approach 1:
The fused sections are pre-formed in the nonwoven fabric during manufacturing, creating predetermined tear initiation points and propagation paths before the tape is put into service. This preliminary structuring ensures consistent manual tearing performance without requiring additional processing steps during use.
Solution Approach 2:
The physical and chemical parameters of the nonwoven fabric are specifically adjusted, including fiber composition, density, and fusion temperature, to achieve the optimal balance between abrasion resistance and manual tearability. The fused sections are created by controlling heating temperature and pressure parameters during fabrication.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The binding tape achieves high abrasion resistance with a scrape abrasion resistance repetition number of 100 times or more and excellent manual tearing properties, allowing easy hand-cutting without tools, while maintaining mechanical strength and flexibility.
Implementation Method 1
excellent abrasion resistance is demanded for tapes for bundling electrical wires, etc.
Implementation Method 2
a substrate layer comprising a resin layer and a non-woven fabric with specific fused sections, and an adhesive layer
Data Source
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AI summary
[Problem] To provide a binding tape that has high abrasion resistace and also has good manula tearing properties. [Solution] A binding tape having a substrate layer comprising a non-woven fabric and a resin layer laminated onto one surface of the non-woven fabric, and an adhesive layer, wherein: the non-woven fabric is provided with at least two types of fused sections having different shapes; and the binding tape has a width direction tearing load, measured in accordance with JIS K7128-2, of 30 N or less. The binding tape preferably has a scrape abrasion resistance repetition number, measured in accordance with ISO 6722, of 100 times or more.