Hand-tearable Adhesive Tape with Serrated Edges for Cable Harnesses
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Solution Overview
Problem
Existing adhesive tapes for cable harnesses in the automotive industry face challenges in achieving high abrasion resistance, noise attenuation, and hand-tearability while maintaining flexibility and machine processability, often compromising on one or more of these properties.
Innovation Solution
A double-layer adhesive tape with a textile carrier consisting of two fabric layers, each with a basis weight of 50 g/m² to 300 g/m², and an adhesive bonding layer of similar basis weight, featuring micro and macro serrations on the edges to enhance tear strength and flexibility, allowing for high abrasion resistance and noise attenuation without compromising hand-tearability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the adhesive tape thickness is increased to improve abrasion resistance and noise attenuation, then the flexibility and hand tearability deteriorate
Solution Approach 1:
The adhesive tape is divided into two separate textile layers (first and second layers) that are firmly connected by an adhesive bonding layer. This segmentation allows each layer to contribute to abrasion resistance while the overall structure maintains flexibility and hand tearability, resolving the contradiction between thickness-related strength and ease of tearing.
Solution Approach 2:
The tape uses a composite structure combining two different textile layers (e.g., woven fabric and non-woven fabric) with an adhesive bonding layer. This composite material approach achieves high abrasion resistance and noise attenuation without requiring excessive thickness, thereby preserving flexibility and hand tearability.
2Object-affected harmful factors
If the adhesive tape thickness is increased to improve noise attenuation, then the flexibility deteriorates
Solution Approach 1:
The tape is segmented into two textile layers of moderate thickness (each 50-300 g/m²) rather than one thick layer. This segmentation achieves the required noise attenuation while maintaining flexibility, as the multi-layer structure can deform more easily than a single thick layer.
Solution Approach 2:
The invention changes the parameter of basis weight from a single thick layer to multiple thinner layers (50-300 g/m² each). This parameter change optimizes the balance between noise attenuation and flexibility, allowing the tape to perform both functions effectively.
3Strength
If the textile layers are made thicker to improve abrasion resistance, then the machine processability deteriorates
Solution Approach 1:
The invention specifies a basis weight range of 50-300 g/m² for each textile layer, optimizing the balance between abrasion resistance and machine processability. This parameter range ensures the tape is thick enough for durability but thin enough for easy handling and application by machine.
Solution Approach 2:
The segmentation into two moderate-thickness layers improves machine processability compared to a single thick layer, as the thinner layers are easier to feed, position, and apply automatically during manufacturing processes.
4Strength
If a single thick textile layer is used to improve abrasion resistance, then the noise attenuation deteriorates
Solution Approach 1:
The invention uses a composite structure of two different textile layers (e.g., woven and non-woven fabrics) with an adhesive bonding layer. This composite construction provides both high abrasion resistance and effective noise attenuation, as the different layer structures work synergistically to dampen vibrations and absorb sound.
Solution Approach 2:
The segmentation into two textile layers with different structures allows each layer to contribute differently to performance: one layer provides abrasion resistance while the other enhances noise attenuation, achieving both functions simultaneously.
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 high abrasion resistance (class E) and noise attenuation (class B) while being easily processable by machine and hand, with improved flagging behavior and flexibility compared to prior art, ensuring effective wrapping of cable harnesses.
Implementation Method 1
an adhesive bonding layer (6), by means of which the fabric layers (4, 5) are firmly connected to one another over the entire surface
Data Source
Figure 1~2
Figure 3~5
Figure 6
AI summary
The invention relates to a highly abrasion-resistant technical adhesive tape (1), in particular an adhesive tape (1) that can be wound onto itself to form an adhesive tape roll, preferably a cable winding tape (1), with a tape-shaped double-layered carrier (2) which is provided on one side with a pressure-sensitive adhesive coating (3), wherein the carrier (2) comprises a first textile layer (4) consisting of a fabric and a second textile layer (5) which are firmly bonded together over their entire surface by an adhesive bonding layer (6).In order to achieve a noise-dampening effect and high abrasion resistance that is easy to process both manually and mechanically, it is proposed that the second textile layer (5) consists of a woven fabric, wherein the woven fabric of the first textile layer (4) and the woven fabric of the second textile layer (5) each have a basis weight in the range of 50 g/m2 to 300 g/m2, wherein the adhesive bonding layer (6) has a basis weight in the range of 50 g/m2 to 300 g/m2, and wherein the adhesive tape has a thickness (D) of at least 0.5 mm and at least one tape edge is designed in the form of a pattern deviating from a straight line, which is structured by means of a separation process.