Cut-Resistant Yarn Structure with Multi-Material Core Filaments
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Solution Overview
Problem
Existing yarn structures and composites lack sufficient cut resistance, which is essential for protective garments such as gloves and coverings, as they often rely on single materials or techniques that do not adequately balance mechanical and chemical properties for enhanced protection.
Innovation Solution
A cut-resistant yarn structure is developed, comprising multiple cut-resistant core filaments made from materials like basalt, steel, or high-performance polyethylene, wrapped with core-spun yarns containing staple fibers such as polyester or aramid, and additional covering layers for enhanced protection, which can be wound or twisted to secure the filaments and provide multiple layers of resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If single material or single technique is used in yarn structure, then manufacturing complexity is reduced, but cut resistance is insufficient
Solution Approach 1:
The patent applies composite materials by combining multiple core filaments made from different materials (steel, basalt, HPPE, aramid) within a single yarn structure. Each material contributes specific properties: steel provides high tensile strength, basalt offers chemical resistance and flexibility, HPPE delivers high strength-to-weight ratio, and aramid contributes heat resistance. This multi-material composite approach achieves superior cut resistance (ANSI A8-A9) that cannot be obtained with single materials alone.
Solution Approach 2:
The yarn structure is segmented into distinct functional components: multiple cut-resistant core filaments (steel, basalt, HPPE, aramid) are separately manufactured and then combined within a covering yarn. This segmentation allows each filament type to be optimized for its specific function while working together synergistically to provide comprehensive protection against cutting hazards.
2Adaptability or versatility
If multiple core filaments with different materials are combined, then cut resistance and flexibility are improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent implements nesting by placing multiple different core filaments (steel, basalt, HPPE, aramid) inside a single covering yarn structure. The covering yarn acts as a container that holds and organizes these diverse filaments together. This nested configuration allows precise control over filament arrangement and distribution, ensuring consistent performance while maintaining flexibility and comfort in the final garment.
Data Source
AI summary
Apparatuses and associated methods of manufacturing are described that provide for cut-resistant yarn structures. An example cut-resistant yarn structure includes a first cut-resistant core filament a second cut-resistant core filament. The yarn structure further includes a first covering yarn that is wound over the first cut-resistant core filament and the second cut-resistant core filament. The first covering yarn includes a core-spun yarn in which staple fibers are spun over a third cut-resistant core filament. The yarn structure also includes one or more covering layers wound over the first covering yarn that may serve as the exterior layer for the cut-resistant yarn structure. In some instances, the first and second cut-resistant core filaments include a core-spun yarn in which staple fibers are spun over the first cut-resistant core filament and/or the second cut-resistant core filament.