Porous Polyurethane Coating for Glove Abrasion Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing gloves with porous resin or rubber layers face issues such as poor abrasion resistance, low sweat release efficiency, vulnerability to abrasion, insufficient peel strength, and migration of the resin layer to pressure-sensitive adhesive tapes or seals, due to inadequate pore size, resin thickness, and moisture permeability.
Innovation Solution
A glove with a porous coating layer on a fiber surface, featuring pores of 0.785 to 78.5 µm² and an average resin layer thickness of 0.9 to 178 µm, achieved by dipping a fiber glove into a polyurethane resin solution and replacing the solvent with water or warm water containing an organic solvent, to control the porous structure and enhance abrasion resistance, moisture permeability, and peel strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a thermoplastic resin is mechanically foamed onto a raw glove, then the resin provides abrasion resistance, but the pore size becomes large causing resin exfoliation due to frictional force
Solution Approach 1:
The patent applies porous polyurethane resin coating layers with controlled pore sizes (0.03-10 μm) to achieve both abrasion resistance and prevent resin exfoliation. The porous structure allows sweat permeability while the controlled pore size prevents the resin from exfoliating under frictional force during work
Solution Approach 2:
The patent changes the parameters of pore size, resin thickness, and resin content to optimize performance. By controlling pore size within 0.03-10 μm and adjusting resin content to 0.1-5.0 mm³/cm², the coating achieves excellent abrasion resistance while maintaining flexibility and preventing exfoliation
2Strength
If a large amount of resin is applied to the glove surface, then abrasion resistance is improved, but the thickness increases and sweat release function decreases
Solution Approach 1:
The patent uses porous polyurethane resin coating layers that maintain high sweat release efficiency even with sufficient resin content for abrasion resistance. The porous structure with controlled pore sizes allows sweat to pass through while the resin provides the necessary abrasion resistance
Solution Approach 2:
The patent creates a composite structure combining porous polyurethane resin with the raw glove fabric. This composite material provides both the abrasion resistance of the resin coating and the breathability needed for sweat release, achieving a balance between protection and comfort
3Productivity
If the resin layer is made thin to improve flexibility and sweat release, then moisture permeability is improved, but abrasion resistance and peel strength decrease
Solution Approach 1:
The patent employs porous polyurethane resin coating layers where the porous structure enables high sweat release efficiency even with thin coating layers. The pores allow moisture transmission while the resin matrix maintains adequate abrasion resistance and peel strength
Solution Approach 2:
The patent optimizes parameters including resin thickness (0.01-0.5 mm), pore size (0.03-10 μm), and resin content (0.1-5.0 mm³/cm²) to achieve the right balance. By controlling these parameters, the coating provides sufficient protection while maintaining flexibility and sweat release function
4Strength
If a porous polyurethane resin is coated with nonporous polyurethane, then abrasion resistance is improved, but moisture permeability deteriorates
Solution Approach 1:
The patent maintains a porous structure throughout the polyurethane resin coating layer, avoiding the application of nonporous polyurethane. The consistent porous structure ensures both abrasion resistance and high moisture permeability, allowing sweat to pass through while providing protective coverage
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 controlled porous structure provides excellent abrasion resistance, moisture permeability, flexibility, and resistance to peeling/migration, making the glove suitable for working environments.
Implementation Method 1
dipping a fiber glove into a polyurethane resin solution and replacing the solvent with water or warm water containing an organic solvent
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
A glove is disclosed which includes a porous coating layer provided on the surface of a glove made of a fiber, wherein a plurality of pores having an area of 0.785 to 78.5 µm2 are present, and an average of the smallest thickness of each resin layer existing between the pores for the respective pores is 0.9 to 178 µm in an electron-microscopic field at the time when a finger pad central portion, 40 mm away from a finger tip toward a finger pad, of a finger portion in the porous coating layer is cut off and a cross-section of 253 µm in length directed from the finger tip toward the finger pad and 2.5 to 10 µm in depth perpendicularly from a surface of the porous coating layer is observed at a magnification of 500 times with an electron microscope. The glove of the present invention is superior in abrasion resistance and peel strength, has excellent resistance to peeling/migration to pressure-sensitive adhesive tapes, and is superior in moisture permeability and flexibility.