Supporting Glove Polymer Layering to Prevent Peeling and Discomfort
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Solution Overview
Problem
Conventional supporting gloves face a trade-off between preventing discomfort due to polymer film penetration into the inner surface and ensuring the film's adhesion to the knitted glove, leading to issues of the film peeling off during use.
Innovation Solution
A method involving the application of a first polymer mixed liquid with a specific concentration range to a knitted glove, followed by a coagulant solution, and then a second polymer mixed liquid, to form a first and second polymer film that covers the outer surface without reaching the inner surface, ensuring adhesion and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the knitted glove is sufficiently immersed in the polymer suspension to form a polymer film that adheres well to the knitted glove, then the polymer film adhesion is improved, but the polymer film penetrates to the inner surface causing wearer discomfort
Solution Approach 1:
The polymer film formation process is segmented into two distinct stages: first forming a base layer through sufficient immersion in polymer suspension to ensure strong adhesion to the knitted glove, then forming a surface layer through application of polymer mixed liquid that prevents penetration to the inner surface. This segmentation allows each layer to serve its specific function without compromising the other.
Solution Approach 2:
Different regions of the polymer film are given different properties: the base layer (formed by immersion) has high adhesion strength to the knitted glove, while the surface layer (formed by application) has controlled thickness and composition to prevent penetration to the inner surface. The surface layer contains polymer mixed liquid with specific solid content (5-30 mass%) that optimizes both adhesion and penetration resistance.
2Strength
If the polymer film is formed to the inner surface of the knitted glove to prevent peeling, then the polymer film adhesion is improved, but the hand of the wearer is caught or stuck on the inner surface
Solution Approach 1:
The polymer film is segmented into a base layer that extends to the inner surface for adhesion and a surface layer that controls the outer characteristics. The base layer ensures the polymer film does not peel during use, while the surface layer prevents discomfort by controlling the interface with the wearer's hand.
Solution Approach 2:
Instead of forming a single thick polymer film that reaches the inner surface, the invention inverts the approach by forming a thin surface layer over a base layer. The surface layer is specifically designed with controlled polymer concentration (5-30 mass%) to prevent both peeling and wearer discomfort, achieving the opposite of the conventional single-layer approach.
3Strength
If the polymer suspension concentration is increased to prevent peeling, then the polymer film adhesion is improved, but the polymer film penetrates deeper into the knitted glove
Solution Approach 1:
The invention changes the polymer concentration parameter at different stages: the polymer suspension used for immersion contains polymer at 20-65 mass% to form an adhesive base layer, while the polymer mixed liquid applied subsequently contains polymer at 5-30 mass% to form a surface layer that limits penetration depth. This parameter change prevents excessive penetration while maintaining adhesion.
Solution Approach 2:
The polymer film formation is segmented into two processes with different polymer concentrations. The first process (immersion in high concentration suspension) creates strong adhesion, while the second process (application of lower concentration mixed liquid) controls penetration depth. This segmentation allows independent optimization of adhesion and penetration control.
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 effectively suppresses wearer discomfort and prevents the polymer film from peeling off, achieving both desired properties simultaneously.
Implementation Method 1
drying the first polymer mixed liquid applied to the knitted glove
Implementation Method 2
applying a coagulant solution to the knitted glove after drying the first polymer mixed liquid
Implementation Method 3
drying the second polymer mixed liquid applied to the knitted glove
Data Source
Figure 1A
Figure 1B
Figure 2A~2B
AI summary
A method for producing a supporting glove (1) according to the present invention includes: a first polymer mixed liquid application step of applying a first polymer mixed liquid including a first liquid and a first polymer, the first polymer mixed liquid including 0.2 mass % or more and 4.0 mass % or less of the first polymer, to at least a part of a knitted glove (10A) formed by knitting a yarn having a fineness of 33 dtex or more and 180 dtex or less; a first drying step of drying the knitted glove (10A) after the first polymer mixed liquid application step; a coagulant solution application step of applying a coagulant solution to the knitted glove (10A) after the first drying step; a second polymer mixed liquid application step of applying a second polymer mixed liquid including a second liquid and a second polymer, the second polymer mixed liquid including 20 mass % or more and 65 mass % or less of the second polymer, to at least a part of an area of the knitted glove (10A) after the coagulant solution application step, the area having the first polymer mixed liquid applied thereto; and a second drying step of drying the knitted glove (10A) after the second polymer mixed liquid application step. The first polymer mixed liquid application step and the first drying step are carried out to form a first polymer film (10B1) so as to cover the yarn knitted into the knitted glove (10A) over the entire thickness direction of at least the part of the knitted glove (10A), and the coagulant solution application step, the second polymer mixed liquid application step, and the second drying step are carried out to form a second polymer film (10B2) so as to form at least a part of an outer surface of the knitted glove (10A) in a state of being worn, and carried out to form the second polymer film (10B2) so as to continuously cover the first polymer film (10B1) from the outer surface toward but not reaching an inner surface of the knitted glove (10A) in the state of being worn.