Discontinuous Adhesive Textile Lamination for Stretchable Insulation
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Solution Overview
Problem
Existing multi-layered articles with discontinuous adhesive coatings face challenges in enhancing surface texture and thermal insulation while maintaining low weight, flexibility, and ease of stretch, as they require thick coatings that increase weight and decrease flexibility, and existing coatings do not significantly improve thermal resistance beyond the inherent properties of the coating material.
Innovation Solution
A multi-layered article featuring a textile with an adhesive layer having two or more adhesive regions separated by regions free of adhesive, where the adhesive regions form distinctive shapes and contain a plurality of adhesive dots, allowing for a reduced stretch force and improved insulation by creating a breathable, aesthetically pleasing surface that preferentially bends in non-adhesive regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a thick adhesive coating is applied to increase surface texture and thermal insulation, then thermal resistance is improved, but weight increases and flexibility decreases
Solution Approach 1:
The adhesive coating is segmented into discontinuous regions rather than applied as a continuous thick layer. This segmentation allows thermal insulation to be achieved through strategic placement of adhesive material in high-heat-flow areas while maintaining low overall weight by eliminating adhesive from less critical regions.
Solution Approach 2:
The adhesive coating is applied with varying local density and thickness - thicker in regions requiring enhanced thermal insulation and surface texture, thinner or absent in regions where flexibility and weight are prioritized. This local quality variation optimizes the balance between thermal resistance and mechanical properties.
2Temperature
If a thick adhesive coating is applied to increase surface texture and thermal insulation, then thermal resistance is improved, but flexibility decreases
Solution Approach 1:
The adhesive coating is segmented into discontinuous regions rather than applied as a continuous thick layer. This segmentation allows thermal insulation to be achieved through strategic placement of adhesive material in high-heat-flow areas while maintaining low overall weight by eliminating adhesive from less critical regions.
Solution Approach 2:
The adhesive coating is applied with varying local density and thickness - thicker in regions requiring enhanced thermal insulation and surface texture, thinner or absent in regions where flexibility and weight are prioritized. This local quality variation optimizes the balance between thermal resistance and mechanical properties.
3Weight of moving object
If a discontinuous adhesive coating is applied to maintain low weight and flexibility, then weight and flexibility are preserved, but thermal insulation is insufficient
Solution Approach 1:
Rather than applying adhesive uniformly across the entire surface, the coating is applied partially in strategically selected discontinuous regions where thermal insulation is most needed. This partial action achieves sufficient thermal resistance without the weight penalty of complete coverage.
Solution Approach 2:
The adhesive coating is applied with varying local density and thickness - thicker in regions requiring enhanced thermal insulation and surface texture, thinner or absent in regions where flexibility and weight are prioritized. This local quality variation optimizes the balance between thermal resistance and mechanical properties.
4Shape
If existing discontinuous coatings are applied to provide surface texture, then surface texture is improved, but stretch force increases
Solution Approach 1:
The adhesive coating is segmented into discontinuous regions rather than applied as a continuous thick layer. This segmentation allows thermal insulation to be achieved through strategic placement of adhesive material in high-heat-flow areas while maintaining low overall weight by eliminating adhesive from less critical regions.
Solution Approach 2:
The adhesive coating is applied with varying local density and thickness - thicker in regions requiring enhanced thermal insulation and surface texture, thinner or absent in regions where flexibility and weight are prioritized. This local quality variation optimizes the balance between thermal resistance and mechanical properties.
Data Source
Figure 1
Figure 2
Figure 2A
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.