Method for making a garment material
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Solution Overview
Problem
Conventional polymeric gloves suffer from issues such as chemical permeability, poor cut and tear resistance, cumbersome design, and lack of flexibility, often requiring toxic solvents like DMF and expensive cut-resistant yarns, which compromise safety and comfort.
Innovation Solution
A method involving a shaped polymer layer with a yarn liner having interstices, coated with a fluid polymeric material to embed the liner, followed by a textile layer, providing a 'sandwiched' structure that enhances cut resistance and flexibility while minimizing skin contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a thick coating of rubber is used to cover protruding hairs, then chemical protection is improved, but flexibility and dexterity deteriorate
Solution Approach 1:
The invention extracts and removes the problematic protruding hairs from the knitted lining before applying the polymeric coating. By eliminating the source of the problem (hairs protruding through the coating), the patent achieves chemical protection without requiring a thick coating, thus maintaining flexibility and dexterity.
Solution Approach 2:
The invention performs preliminary action by singeing or removing the protruding hairs from the knitted lining before applying the polymeric coating. This preliminary removal of hairs ensures that the coating can be applied thinly and uniformly without hairs protruding through, thereby achieving both chemical protection and flexibility.
2Strength
If a knitted lining is used to support the polymeric material, then cut and tear resistance is improved, but chemical permeability worsens due to protruding hairs
Solution Approach 1:
The invention extracts and removes the problematic protruding hairs from the knitted lining before applying the polymeric coating. By eliminating the hairs that would otherwise protrude through the coating and allow chemical permeability, the patent achieves both cut/tear resistance from the knitted structure and chemical impermeability.
Solution Approach 2:
The invention performs preliminary action by singeing or removing the protruding hairs from the knitted lining before applying the polymeric coating. This ensures that the coating forms a continuous barrier without hair protrusions, achieving both mechanical strength from the knit and chemical protection.
3Manufacturing precision
If toxic solvents like DMF are used in the polymeric solution, then coating quality is improved, but safety and working conditions deteriorate
Solution Approach 1:
The invention converts the harmful effect of solvent toxicity into a benefit by selecting a water-based polymeric solution instead of DMF-based solutions. The patent achieves adequate coating quality using water as the solvent, thereby eliminating the toxic hazards associated with DMF while maintaining the functional quality of the polymeric coating.
4Strength
If expensive cut-resistant yarns are used in the lining, then cut resistance is improved, but cost increases
Solution Approach 1:
The invention uses conventional, cost-effective knitted linings instead of expensive cut-resistant yarns. By removing the protruding hairs through singeing and applying a polymeric coating, the patent achieves adequate cut resistance from the knitted structure itself without requiring expensive specialized yarns, thereby reducing material costs.
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 method results in a glove that is cut and tear-resistant, liquid impermeable, and flexible, offering improved safety and comfort by reducing skin irritation and enhancing dexterity.
Implementation Method 1
applying to the liner a fluid polymeric material that permeates the interstices
Implementation Method 2
allowing the fluid polymeric material to solidify to thereby form a second layer
Data Source
AI summary
A method of making a garment material and garment material and garments obtainable by the method.The method comprises providing a first layer, which is a shaped polymer and applying a liner to the first layer, the liner being formed of yarn and having interstices through it. A fluid polymeric material is then applied to the liner so that it permeates the interstices and is allowed to solidify to thereby form a second layer in which the liner is embedded in the solid polymeric material. Fibres are then applied to form a textile layer, which serves as a skin-contacting layer.The garment material comprises a first layer (70, 76, 78), which is a shaped polymer; a second layer (80), which is a shaped polymer that is provided at one or more locations on the first layer, the second layer taking the shape of the first layer at said one or more locations; and a textile layer (82). The second layer is located between the first layer and the textile layer and a liner (22) is embedded in the second layer, the liner being formed of yarn and having interstices through it.