Patterned Adhesive Textile Layers for Low-Force Stretch Insulation
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Solution Overview
Problem
Existing discontinuous coatings on textiles fail to enhance surface texture and thermal insulation significantly without increasing weight and reducing flexibility, and they also increase the stretch force required to stretch the textile.
Innovation Solution
A multi-layered article with a textile and an adhesive layer featuring discontinuous adhesive regions and non-adhesive regions, where the adhesive regions have a distinctive shape and contain adhesive dots, allowing for a low stretch force and improved insulation while maintaining flexibility and low weight, achieved through a method involving tensioning, adhesive application, and potential shrinking of the adhesive or textile.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a thick coating is applied to increase surface texture, then surface texture is improved, but weight increases and flexibility decreases
Solution Approach 1:
The adhesive coating is segmented into discontinuous regions and adhesive dots rather than applied as a continuous thick layer. This segmentation allows surface texture to be created through the patterned adhesive regions while minimizing overall adhesive material usage, thereby reducing weight while maintaining the desired surface texture effect.
Solution Approach 2:
The adhesive is applied with varying local density - concentrated in specific adhesive regions and dots rather than uniformly distributed. This local quality approach creates surface texture where needed while leaving other areas with minimal adhesive, optimizing the balance between surface texture and weight.
2Temperature
If a thick coating is applied to increase thermal insulation, then thermal resistance is improved, but weight increases and flexibility decreases
Solution Approach 1:
The thermal insulation function is achieved through segmented adhesive regions rather than a continuous thick coating. The discontinuous pattern of adhesive regions and dots provides thermal resistance at specific locations while minimizing overall adhesive material, thereby reducing weight while maintaining insulation performance.
Solution Approach 2:
The patent transitions from a two-dimensional continuous coating to a three-dimensional patterned structure with adhesive regions and dots distributed across the surface. This dimensional change allows thermal insulation to be provided through the vertical profile of adhesive dots and regions rather than requiring uniform thickness across the entire surface, reducing overall weight.
3Shape
If a discontinuous coating is applied, then surface texture and thermal insulation are improved, but stretch force increases
Solution Approach 1:
The adhesive is segmented into discrete dots and regions rather than forming a continuous layer. This segmentation creates natural stress relief points between the adhesive dots, allowing the textile substrate to stretch more easily without the constraint of a continuous adhesive film, thereby reducing stretch force while maintaining surface texture.
Solution Approach 2:
The adhesive properties are localized to specific regions and dots rather than being uniformly distributed. This local quality allows areas between adhesive dots to remain flexible and stretchable, reducing the overall stretch force required while maintaining surface texture where adhesive is present.
Data Source
AI summary
Multi-layered articles that include a first textile and an adhesive layer having a non-uniform adhesive pattern is provided. The non-uniform adhesive pattern creates regions free or substantially free of adhesive. The adhesive regions, together with the non-adhesive regions, create a visible pattern on the surface of the article. A second textile may optionally be bonded to the adhesive opposing the first textile to form a multi-layered article. The first textile or adhesive layer may be shrinkable or expandable. Additionally, the multi-layered article has a stretch force at 20% elongation of less than three times the stretch force of the first textile at 20% elongation. The multi-layered articles are breathable, insulative, aesthetically pleasing, and demonstrate superior stretch and recovery properties.