Wear-Resistant Multilayer Fabric with Entangled PTFE Fibers
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Solution Overview
Problem
Conventional sliding fabrics with fluorine resin fibers face issues of wear and durability under high-load environments, with fluorine fibers easily worn down and the cloth's adhesiveness and manufacturing complexity being significant drawbacks.
Innovation Solution
A wear-resistant multilayer fabric is developed, comprising a sliding fabric with polytetrafluoroethylene (PTFE) fibers and a base fabric with higher tensile strength fibers, where the PTFE fibers are entangled with the base fabric for enhanced bonding and wear resistance, ensuring long-term sliding performance even under high loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fluorine resin is laminated or coated on the surface layer to reduce friction, then sliding property is improved, but the fluorine resin film is thin and easy to peel off due to non-adhesion
Solution Approach 1:
The patent divides the fabric into multiple layers: a base fabric layer and a fluorine resin fiber layer. This segmentation allows each layer to perform its specialized function - the base fabric provides structural support and adhesion, while the fluorine resin layer provides low friction sliding properties.
Solution Approach 2:
The patent creates a composite fabric structure combining base fabric materials (such as polyester, nylon, or polypropylene) with fluorine resin fibers (PTFE). This composite structure leverages the adhesive properties of the base fabric and the low-friction properties of the fluorine resin, preventing peeling while maintaining sliding performance.
2Ease of operation
If fluorine fibers are used in mix-spinning or pile cloth to improve sliding property, then friction is reduced, but worn-down fluorine fibers accumulate at gaps and are discharged, reducing durability
Solution Approach 1:
The patent prepares the base fabric surface beforehand by creating anchor points (loops, knots, or textured surfaces) that will capture and retain worn-down fluorine fibers before they can be discharged. This pre-prepared structure prevents fiber loss and maintains sliding properties over extended periods.
Solution Approach 2:
The base fabric is designed with a porous or looped structure that allows it to absorb and retain worn-down fluorine fibers. This porous architecture prevents fiber discharge while maintaining the fabric's flexibility and sliding performance.
3Ease of operation
If conventional sliding fabrics are used under high-load environments, then sliding function is provided, but the cloth shows wear and reduced durability due to fiber breakage
Solution Approach 1:
The patent employs a composite structure where high-strength base fabric materials (such as aramid, glass fiber, or high-denier polyester) are combined with fluorine resin fibers. This composite construction distributes mechanical loads across the stronger base fabric, protecting the fluorine fibers from breakage while maintaining sliding functionality under high loads.
Solution Approach 2:
The patent segments the functional requirements: the base fabric layer handles mechanical strength and load-bearing, while the fluorine resin layer handles low-friction sliding. This functional segmentation allows each layer to be optimized for its specific role, improving overall wear resistance under high-load conditions.
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 multilayer fabric effectively maintains its sliding properties and wear resistance under high loads, preventing PTFE fiber breakage and maintaining a coated surface, thus offering improved durability and extended lifespan compared to conventional cloths.
Implementation Method 1
fluorine resin has been used in the form of lamination or coating on the surface layer of a sliding member due to its low coefficient of friction
Implementation Method 2
the sliding fabric and the base fabric have mutual warps and/or wefts that are mutually entangled for bonding
Data Source
AI summary
A wear-resistant cloth has high wear resistance and is capable of exerting a long-term sliding property even under high-load environment as compared with conventional cloths. A wear-resistant multilayer fabric includes a sliding fabric and a base fabric. The sliding fabric includes polytetrafluoroethylene fibers A, the base fabric includes fibers B having creep ratio in a standard state and under 20% load of breaking strength, the creep ratio being lower than creep ratio of the polytetrafluoroethylene fibers, and the sliding fabric and the base fabric have mutual warps and/or wefts that are mutually entangled for bonding.