Stretchable Material Bonding via Dot Array Adhesion
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Solution Overview
Problem
Existing adhesion patterns in stretchable materials for garments increase adhesive usage and reduce ventilation performance, while discontinuous patterns enhance stretchability in non-adhesion parts, making it difficult to control stretchability in a predetermined direction.
Innovation Solution
A layer-bonded structure using a dot-shaped adhesion pattern with specific arrangements of adhesion parts forming an array part along a predetermined extension direction, including denser arrangements and different positions of adhesion parts in certain rows to reduce stretchability and adhesive use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If continuous adhesion pattern is used, then adhesive strength is secured, but amount of adhesive increases and ventilation performance reduces
Solution Approach 1:
The continuous adhesion pattern is segmented into discrete dot-shaped adhesion parts arranged in arrays. This segmentation reduces the total amount of adhesive needed while maintaining bonding effectiveness through strategic placement of multiple smaller adhesion points across the fabric surface.
Solution Approach 2:
Different regions of the adhesion pattern have different densities of adhesion parts. The array structure allows for local variation in adhesion concentration, providing stronger bonding where needed while reducing adhesive usage in other areas, thus optimizing both strength and adhesive quantity.
2Strength
If continuous adhesion pattern is used, then adhesive strength is secured, but ventilation performance is reduced
Solution Approach 1:
By segmenting the adhesion pattern into discrete dot-shaped parts arranged in arrays, large continuous adhesive areas are replaced with multiple small discrete points. This creates numerous small openings in the fabric that maintain ventilation performance while providing sufficient bonding through the distributed adhesion points.
Solution Approach 2:
The array-based dot pattern creates a porous structure with numerous small openings between the adhesion parts. This porous arrangement maintains breathability and ventilation performance while providing adequate surface area for adhesive bonding through the distributed dot pattern.
3Quantity of substance
If discontinuous adhesion pattern is used, then amount of adhesive is reduced, but stretchability in non-adhesion parts increases
Solution Approach 1:
The array structure creates regions of different adhesion density across the fabric. By controlling the density and distribution of adhesion parts within the arrays, the patent achieves local variation in stretchability - areas with higher adhesion density have reduced stretchability while maintaining overall fabric flexibility and breathability.
Solution Approach 2:
The adhesion pattern is designed to dynamically respond to fabric movement and stretching. The dot-shaped adhesion parts in array configuration allow the fabric to stretch and move while maintaining controlled elasticity through the distributed bonding points, adapting to various degrees of deformation.
4Stability of the object's composition
If adhesion parts are densely arranged, then stretchability is decreased, but adhesive usage increases
Solution Approach 1:
The array structure enables local concentration of adhesion parts in specific regions where stretchability control is needed, while maintaining lower adhesive density in other areas. This localized densification achieves stretchability control without proportionally increasing total adhesive usage across the entire fabric surface.
Solution Approach 2:
Instead of uniformly distributing adhesion parts across the entire fabric, the array pattern concentrates adhesion action in specific partial regions. This partial action approach provides sufficient stretchability control in critical areas without the need for excessive adhesive usage over the whole surface.
Data Source
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AI summary
To provide a layer-bonded structure of a stretchable material, a garment, and a method for layer-bonding of a stretchable material, which can decrease stretchability in a predetermined extension direction while reducing an amount of adhesive used when layer-bonding stretchable materials to each other via an adhesive. In a layer-bonded structure of a stretchable material in which stretchable materials are bonded with an adhesion pattern formed with an adhesive, the adhesion pattern is composed of plural adhesion parts in which an adhesive is formed in a dot shape, and the plural adhesion parts have a band shape as a whole by forming an array part arranged in a predetermined extension direction and providing plural rows of the array part.