Polyurethane Resin-Coated Glove With Patterned Inside Surface
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Solution Overview
Problem
Conventional polyurethane resin-coated work gloves face issues with wearing/removing efficiency, grip, and workability due to either complete resin impregnation leading to thick layers that hinder removal or incomplete impregnation resulting in slipping and reduced anti-slipping force.
Innovation Solution
A glove design where polyurethane resin is impregnated onto the inside surface in a patterned weave or knit pattern, forming resin films or regions with a dynamic friction coefficient of 0.8 to 1.8, combined with a non-porous outer layer for enhanced workability, flexibility, and waterproofness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If polyurethane resin is impregnated into the base glove to improve slip resistance and grip property, then the resin layer becomes thicker and wearing/removing efficiency deteriorates
Solution Approach 1:
The invention applies local quality by creating resin-impregnated portions only in specific regions (fingertips, palm, and wrist areas) rather than uniformly throughout the entire glove. This localized impregnation provides slip resistance where needed while maintaining ease of wearing and removing in non-impregnated regions, thereby resolving the contradiction between slip resistance and wearing/removing efficiency.
2Reliability
If polyurethane resin is impregnated into the base glove to improve grip property, then the resin layer becomes thicker and touch feeling deteriorates
Solution Approach 1:
The invention applies local quality by concentrating resin impregnation in specific functional areas (fingertips for grip, palm for stability) while leaving other areas with thinner or no resin layers. This ensures good grip property in impregnated regions while maintaining sensitive touch feeling in non-impregnated regions, resolving the contradiction between grip property and touch feeling.
3Ease of operation
If polyurethane resin coating is applied to prevent resin impregnation, then wearing/removing efficiency improves, but slip resistance and workability deteriorate
Solution Approach 1:
The invention applies local quality by differentiating between coated regions (for wearing/removing efficiency) and impregnated regions (for slip resistance). The palm and fingertip areas have resin impregnation for grip, while other areas have coating for easy wearing and removing, thus resolving the contradiction between wearing/removing efficiency and slip resistance.
4Ease of operation
If water is impregnated into the base glove to prevent polyurethane impregnation, then wearing/removing efficiency improves, but workability deteriorates due to slipping
Solution Approach 1:
The invention applies local quality by using water impregnation selectively in non-critical areas to prevent unwanted resin impregnation, while maintaining resin impregnation in critical grip areas. This localized approach preserves wearing/removing efficiency without compromising workability in the impregnated regions.
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 solution provides improved wearing/removing efficiency, grip, flexibility, and durability while maintaining waterproofness, with a dynamic friction coefficient that balances slip resistance and ease of use.
Implementation Method 1
immersing the glove held on the hand-shaped mold in a water tank for displacement of DMF in the solvent with water, and thus, allowing precipitation of the polyurethane by loss of solubility and forming a polyurethane resin film on the base glove
Implementation Method 2
The resin-impregnated gloves are high in the slip resistance of inside surface of glove and the grip property between the glove and a hand
Data Source
Figure 1(a)~1(b)
Figure 2~3
Figure 4
AI summary
An object of the present invention is to provide a glove having a fiber glove coated and impregnated with a polyurethane resin that is superior in wearing/removing efficiency and grip property between the glove and thumb and fingers and also in strength and flexibility. Another object is to provide a glove superior in workability, strength, durability, flexibility, as well as in waterproofness. A glove having a fiber glove coated and impregnated with a polyurethane resin characterized in that resin films or resin regions having uneven surface like a knit or weave pattern of the yarn are formed on a partial or entire surface in the impregnated resin regions on the inside surface by the resin impregnated from the outside surface to the inside surface, and the dynamic friction coefficient of the inside surface of the glove having the resin films or resin regions is 0.8 to 1.8.