Tungsten Twist-Coated Cut-Resistant Yarn for Lightweight Gloves
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Solution Overview
Problem
Current cut-resistant gloves are uncomfortable due to increased thickness, stiffness, and weight, which compromises user experience despite enhanced cut resistance.
Innovation Solution
A method of producing tungsten twist-coated and wrapped cut-resistant yarn by twisting tungsten filaments with auxiliary yarns like nylon or polyester and wrapping with high-molecular-weight polyethylene fibers, followed by a knitting process with spandex yarn to create lightweight, flexible textiles with high cut resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the thickness of cut-resistant gloves is increased to achieve cut resistance, then cut resistance is improved, but the gloves become stiff, thick and heavy, increasing the burden on the operator
Solution Approach 1:
The patent uses composite yarns combining tungsten filaments with synthetic fibers (polyester, polyamide, or aramid) to achieve cut resistance. The tungsten core provides high strength and cut protection, while the synthetic outer layers provide flexibility and comfort, eliminating the need for thick homogeneous material
Solution Approach 2:
The patent applies different material properties to different parts of the yarn structure. The inner core uses tungsten filaments for maximum strength and cut resistance where needed, while the outer layers use flexible synthetic fibers for comfort and dexterity, creating a localized optimization of material properties
2Strength
If the thickness of cut-resistant gloves is increased to achieve cut resistance, then cut resistance is improved, but the gloves become stiff and do not bend easily
Solution Approach 1:
The composite structure combines rigid tungsten core for cut protection with flexible synthetic outer layers, allowing the material to maintain both high strength and flexibility. The synthetic fibers can bend and deform while the tungsten core maintains structural integrity
Solution Approach 2:
Different parts of the yarn have different mechanical properties - the inner tungsten core provides rigidity and strength, while the outer synthetic layers provide flexibility and bendability, allowing the overall structure to be both strong and flexible
3Strength
If the thickness of cut-resistant gloves is increased to achieve cut resistance, then cut resistance is improved, but the gloves become heavy
Solution Approach 1:
The patent uses high-strength tungsten filaments that provide exceptional cut resistance with minimal weight. The synthetic outer layers are also lightweight, resulting in a glove that achieves high cut protection without the weight penalty of thick homogeneous material
Data Source
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AI summary
Disclosed is a method of preparing tungsten-based twisted and wrapped cut-resistant yarn, which comprises two steps: preparation of tungsten-based twisted yarn and preparation of tungsten-based twisted and wrapped cut-resistant yarn. Also disclosed is a method of producing a textile from the tungsten-based twisted and wrapped cut-resistant yarn, wherein by a knitting process with double yarn feeders U2, a textile is produced from spandex stretch yarn and the tungsten-based twisted and wrapped cut-resistant yarn. The present invention is advantageous in that: because China is a major producer of tungsten filaments and the reserves account for 75% of the world's total reserves, the present invention, using the tungsten filament as the raw material, has a broad variety of raw material sources and low costs. Moreover, the produced textiles are light, thin, and soft; and have high cut resistance, chemical stability, bending resistance, and deformation resistance during washing, and excellent electrical conductivity.