Composite Cable Wrapping Tape Abrasion Resistance
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Solution Overview
Problem
Existing cable winding tapes for automobiles are complex to manufacture and assemble, with high production costs and long processing times, and they often lack the highest abrasion resistance and flexibility required by automotive standards, while also being difficult to process both manually and mechanically.
Innovation Solution
A cable winding tape with a composite carrier formed by a first textile layer and a second nonwoven textile layer, where the second layer is a sewn fleece with a self-adhesive acrylate adhesive, providing high abrasion resistance and flexibility, and allowing for both manual and mechanical processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a velor layer is used to achieve high abrasion resistance, then abrasion resistance is improved, but manufacturing complexity and processing time increase
Solution Approach 1:
The patent removes the problematic velor layer from the tape structure while maintaining high abrasion resistance through the combination of a tightly woven fabric carrier and a specifically formulated pressure-sensitive adhesive layer. This extraction eliminates the manufacturing complexity and processing time issues associated with velor layers while preserving the essential abrasion protection function.
Solution Approach 2:
The patent employs a composite structure consisting of a fabric carrier layer and a pressure-sensitive adhesive layer, where the adhesive layer itself is formulated as a composite material providing both adhesion and abrasion resistance. This composite approach achieves the required performance without needing additional velor layers.
2Strength
If a velor layer is used to achieve high abrasion resistance, then abrasion resistance is improved, but processing time increases
Solution Approach 1:
By removing the velor layer entirely and relying on the fabric carrier combined with the adhesive layer to provide abrasion resistance, the patent eliminates the additional processing steps and time required to handle and attach velor layers, while still achieving class E abrasion resistance.
3Strength
If conventional fabric construction with high thread density is used to achieve abrasion resistance, then abrasion resistance is improved, but flexibility and ease of processing deteriorate
Solution Approach 1:
The patent optimizes the fabric carrier parameters to achieve a balance between abrasion resistance and flexibility. Instead of using very high thread densities that would compromise flexibility, the patent selects specific thread count ranges and yarn characteristics that provide sufficient abrasion protection while maintaining ease of handling and processing.
4Strength
If multiple layers are combined to achieve higher abrasion resistance than the sum of individual layers, then abrasion resistance is improved, but manufacturing complexity increases
Solution Approach 1:
The patent creates a composite adhesive layer that inherently provides enhanced abrasion resistance through its formulation and structure, eliminating the need for multiple separate protective layers. This single composite layer achieves performance greater than the sum of its components while simplifying the overall structure.
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 tape achieves the highest abrasion resistance class E according to LV 312, with reduced production costs and shorter processing times, while maintaining excellent compatibility with various cables and chemical resistance, and can be easily processed without flagging.
Implementation Method 1
a self-adhesive adhesive layer, which consists of a pressure-sensitive adhesive
Implementation Method 2
acrylate adhesives, in particular UV-crosslinkable acrylate adhesives
Data Source
Figure 1
AI summary
The invention relates to a cable wrapping tape, particularly for the engine compartment of an automobile, comprising a tape-shaped carrier (3) formed as a composite of at least a first textile layer and a second textile layer, wherein the second textile layer (2) is a nonwoven fabric, and with a self-adhesive layer (5) applied to at least one side of the carrier (3), the adhesive layer consisting of a pressure-sensitive adhesive. To create such a cable wrapping tape, which is easy to manufacture and assemble and exhibits maximum abrasion resistance, it is proposed that the first textile layer (1) be a woven fabric, wherein the fabric has at least 20 warp threads per cm and at most 22 weft threads per cm, and wherein the cable wrapping tape meets abrasion class E according to LV 312 on both a mandrel with a diameter of 5 mm and a mandrel with a diameter of 10 mm.