Polyethylene-Polyester Composite Fabric for Tear Resistance
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Solution Overview
Problem
Existing webbing materials made from single high-strength polyethylene fibers or aramid fibers are costly, and blending these fibers with lower-priced fibers is challenging due to difficulties in determining the optimal blending ratio, resulting in subpar abrasion resistance and tear resistance.
Innovation Solution
A high-strength and tear-resistant fabric is developed, comprising a first polyester filament yarn and a second composite yarn made of polyethylene filament and polyester filament, with a polyethylene filament mass percentage between 15% and 50%, and an elongation of 1% to 10%. The fabric can be woven or knitted and features a hydrophobic and oil-repellent coating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If single high-strength polyethylene fiber or aramid fiber is used to make webbing, then the strength and tear resistance are improved, but the production cost increases significantly
Solution Approach 1:
The patent applies composite materials by blending high-strength polyethylene fibers with cost-effective polyester fibers in specific ratios (polyethylene fiber content of 30-70% by weight). This composite approach maintains the superior strength and tear resistance properties of polyethylene fibers while significantly reducing production costs through the inclusion of cheaper polyester fibers, thus resolving the contradiction between performance and cost.
Solution Approach 2:
The patent employs parameter changes by optimizing the blending ratio of polyethylene and polyester fibers, specifically setting the polyethylene fiber content between 30-70% by weight. This parameter optimization ensures that the fabric achieves adequate strength and tear resistance (meeting or exceeding GB/T 4208-2017 standards) while controlling production costs, effectively balancing performance requirements with manufacturing affordability.
2Ease of manufacture
If high-strength polyethylene fiber or aramid fiber is blended with lower-priced fibers to reduce production cost, then the production cost decreases, but the abrasion resistance and anti-bite, anti-tear performance become poor
Solution Approach 1:
The patent applies parameter changes by precisely controlling the blending ratio parameters, specifically setting polyethylene fiber content at 30-70% by weight. This parameter optimization ensures that the fabric maintains adequate abrasion resistance and anti-bite/anti-tear performance (meeting GB/T 4208-2017 standards) while achieving cost reduction through the inclusion of cheaper polyester fibers, thus resolving the contradiction between cost and reliability.
Solution Approach 2:
The patent uses composite materials with optimized composition, blending polyethylene fibers (providing strength and tear resistance) with polyester fibers (providing cost-effectiveness and durability). The specific composite ratio of 30-70% polyethylene fiber ensures that the resulting fabric meets reliability requirements for abrasion and bite resistance while maintaining economical production costs.
3Ease of manufacture
If the blending ratio of high-strength fiber and lower-priced fiber is not properly determined, then the production cost can be reduced, but the tear-resistant performance of the fabric becomes poor
Solution Approach 1:
The patent applies parameter changes by optimizing the blending ratio parameter, specifically setting polyethylene fiber content at 30-70% by weight. This parameter control ensures that the fabric achieves adequate tear-resistant performance (meeting GB/T 4208-2017 standards) while maintaining cost reduction benefits, thus resolving the contradiction between production cost and tear-resistant performance.
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 fabric achieves significant strength and tear resistance while reducing production costs, as demonstrated by its ability to withstand repeated biting forces without significant damage, outperforming comparative examples in durability tests.
Implementation Method 1
the surface of the covering yarn is provided with a hydrophobic and oil-repellent coating
Data Source
AI summary
A high-strength and tear-resistant fabric includes a first fabric yarn made of polyester filament yarn and a second fabric yarn made of a composite yarn including polyethylene filament yarn and polyester filament yarn. The fabric has a mass percentage of polyethylene filament yarn between 15% and 50%. When the second fabric yarn is a twisted or untwisted composite yarn and the mass percentage of polyethylene filament yarn in the fabric is approximately 20% to 25%, the resulting fabric exhibits exceptionally ideal strength and tear-resistant characteristics while effectively reducing the production cost of the fabric.