Textile Adhesive Dots for Breathable Bonding
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Solution Overview
Problem
Current automated liquid adhesive jetting systems in the textile industry are inefficient, producing waste, requiring hazardous materials, and taking a long time to achieve full bond strength, while heat-activated adhesives compromise fabric breathability and flexibility.
Innovation Solution
Development of adhesive compositions comprising an aqueous polymer dispersion, polymer powder, dispersing agent, and thickener, allowing for strong bonding while maintaining fabric flexibility and breathability, and enabling adhesive dots to be applied and stored before bonding, reducing waste and processing time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If heat-activated adhesive film is used for bonding textiles, then bonding strength is achieved, but fabric breathability and flexibility are compromised
Solution Approach 1:
The adhesive is applied as discrete dots rather than continuous film, creating localized bonding zones that preserve fabric properties in non-bonded areas. This allows the fabric to maintain breathability and flexibility while achieving sufficient bonding strength at the adhesive locations.
Solution Approach 2:
The continuous adhesive film is segmented into discrete dots or patterns. This segmentation reduces the total adhesive coverage area, allowing the bonded regions to provide strength while the unbonded fabric regions maintain their natural properties like breathability and flexibility.
2Reliability
If continuous adhesive tape or sheet is used, then bonding coverage is ensured, but waste of unused adhesive and increased raw material cost occur
Solution Approach 1:
Instead of applying continuous adhesive coverage, only partial coverage with discrete adhesive dots is used. This provides sufficient bonding for the application while significantly reducing adhesive material consumption and eliminating waste from unused portions of continuous tape or sheet.
Solution Approach 2:
The adhesive application is segmented from continuous form to discrete dots or patterns matched to the specific bonding requirements, ensuring coverage only where needed and eliminating material waste from excess adhesive.
3Strength
If reactive adhesive systems are used for strong bonding, then bond strength is achieved, but packaging waste, safety hazards, and long curing time are produced
Solution Approach 1:
The adhesive system transitions from reactive chemistry requiring long curing times to a heat-activated or pressure-sensitive system that achieves bonding rapidly. This parameter change in the bonding mechanism eliminates long waiting periods while maintaining strong bond performance.
Solution Approach 2:
The adhesive is formulated as a stable, non-reactive composition that can be stored and handled without special precautions, eliminating the need for expensive protective packaging and safety equipment associated with reactive systems, while achieving bonding through simple heat or pressure activation.
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 adhesive compositions provide a strong bond, reduce waste, and maintain fabric properties, allowing for efficient application and storage of adhesive dots before bonding, improving processing efficiency and environmental safety.
Implementation Method 1
an aqueous polymer dispersion; a dispersed polymer powder, wherein the polymer powder has a particle size of about 0 microns to about 250 microns
Implementation Method 2
a dispersing agent
Implementation Method 3
a thickener
Data Source
AI summary
Disclosed herein are improved adhesive compositions for bonding textiles and methods of producing the same.