Cut Resistant Glove Composite Yarn Structure
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Solution Overview
Problem
Conventional cut-resistant gloves with composite yarns suffer from inferior moisture absorption properties, knitting processability, and uncomfortable putting-on and use feelings due to exposed metal wires and glass fibers, which irritate the skin and allow dust and liquids to penetrate.
Innovation Solution
A cut-resistant glove composed of a composite yarn with a metal thin wire core and an attending yarn, wrapped with a covering fiber, and coated with rubber or resin, enhancing elastic properties, moisture absorption, and workability, while preventing exposure of the metal wire and improving knitting processability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional composite yarns with metal wires and glass fibers are used for cut-resistant gloves, then cut resistance is improved, but knitting processability deteriorates and the metal wires and glass fibers rupture and expose to the outside, irritating the skin
Solution Approach 1:
The patent applies nested structure by placing the metal wire and glass fiber core inside multiple protective layers. The core is first wrapped by attending yarn, then by covering fiber, and finally the entire composite yarn is enclosed within the knitted glove fabric structure. This nested arrangement protects the brittle core materials from rupture during knitting while maintaining cut resistance.
Solution Approach 2:
The patent uses composite materials by combining metal wire, glass fiber, attending yarn, and covering fiber into a unified composite yarn structure. This composite construction allows the brittle core materials to provide cut resistance while the flexible yarn and fiber components absorb knitting stresses, preventing rupture and exposure.
2Strength
If conventional composite yarns are used, then cut resistance is achieved, but moisture absorption property becomes inferior and the glove gives uncomfortable putting-on and use feeling
Solution Approach 1:
The patent applies local quality by assigning different functional properties to different parts of the composite yarn and glove structure. The core provides cut resistance, the attending yarn provides flexibility and moisture absorption, the covering fiber provides protection, and the inner surface in contact with skin is optimized for comfort. This localized functional distribution resolves the contradiction between cut resistance and comfort.
3Strength
If metal wires and glass fibers are exposed to the outside of composite yarns, then cut resistance is maintained, but the exposed wires and fibers prickly irritate hands and fingers
Solution Approach 1:
The patent uses nested structure to enclose the potentially irritating metal wires and glass fibers within multiple protective layers including attending yarn and covering fiber, ensuring they remain embedded and do not expose to contact with skin, thereby eliminating prickly irritation while maintaining cut resistance.
Solution Approach 2:
The patent introduces attending yarn and covering fiber as intermediary materials between the core metal/glass fibers and the skin. These intermediary layers act as buffers that prevent direct contact between the irritating core materials and the user's skin, while still allowing the core to provide cut resistance.
4Strength
If conventional composite yarns are used, then cut resistance is provided, but the covering fiber generates cut dust when sharp blades are handled and the glove lacks waterproofness
Solution Approach 1:
The patent uses composite materials construction where the combination of metal wire, glass fiber, attending yarn, and covering fiber creates a unified structure that reduces cut dust generation. The layered composite structure contains cut fibers within the yarn and glove fabric, preventing dust generation, while the same structure provides waterproofness.
Data Source
Figure 1
AI summary
A cut-resistant glove is provided which is formed of a composite yarn comprising a core and a covering layer formed by wrapping a covering fiber around the core, the core being composed of a metal thin wire and an attending yarn comprising a filament yarn, the surface of which is coated with a rubber or a resin. The cut-resistant glove is excellent not only in moisture absorption property, putting-on-feeling, use feeling and workability in the state of being put on, but also in non-slip property, water proofness, strength and cut-resistant property.