Methods of bonding a textile
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Solution Overview
Problem
Current automated liquid adhesive jetting systems in the textile industry produce waste, require hazardous handling, and affect the breathability and flexibility of fabrics, while traditional heat-activated bonding systems result in increased raw material costs and adverse effects on fabric properties.
Innovation Solution
A method using a piezo-electric liquid jetting system to apply an adhesive composition as dots onto textiles, which are then dried and bonded at a later time, allowing for improved storage and reduced waste, maintaining fabric flexibility and breathability, and utilizing an adhesive composition comprising an aqueous polymer dispersion, polymer powder, dispersing agent, and thickener.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If continuous adhesive film or tape is used for bonding textiles, then bonding strength is achieved, but fabric breathability and flexibility are reduced
Solution Approach 1:
The adhesive is applied as discrete dots or spots rather than continuous film, segmenting the bonding areas to allow fabric to breathe and move between adhesive points while maintaining overall bond strength
Solution Approach 2:
Adhesive is applied only at specific locations where bonding is needed rather than covering the entire surface, maintaining local fabric properties in non-bonded areas
2Strength
If reactive liquid adhesive systems are used, then strong bonding is achieved, but hazardous handling and special safety procedures are required
Solution Approach 1:
The adhesive system uses water-based or non-reactive formulations that can be easily cleaned with water, replacing hazardous reactive systems that require aggressive solvents for cleanup
Solution Approach 2:
The patent converts the previously harmful reactive chemistry into a benign water-based system, using water as the carrier that evaporates cleanly without hazardous residues
3Productivity
If adhesive is jetted and immediately bonded, then productivity is maintained, but storage and transport of pre-adhered fabric is difficult due to tackiness
Solution Approach 1:
Adhesive is applied to fabric in advance and allowed to dry completely, creating a stable, non-tacky surface that can be stored and transported before the bonding operation is completed
Solution Approach 2:
The process separates adhesive application from bonding operation, allowing adhesive to be applied, dried, stored, and then activated for bonding at a later time when needed
4Reliability
If excess adhesive film is applied, then bonding coverage is ensured, but waste increases and cost increases
Solution Approach 1:
Adhesive is applied in precise amounts exactly where needed through dot application, avoiding the excess application inherent in continuous film methods while ensuring adequate coverage at bonding points
Solution Approach 2:
The adhesive system allows fabric to be stored with applied adhesive for extended periods without degradation, eliminating the need to use adhesive immediately and reducing waste from unused adhesive
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 method achieves a strong bond between textiles while preserving their flexibility and breathability, reduces waste, and allows for efficient storage and application of adhesive, with bonded strengths ranging from 1 lb/inch to 8 lb/inch.
Implementation Method 1
A method using a piezo-electric liquid jetting system to apply an adhesive composition as dots onto textiles
Implementation Method 2
drying the jetted adhesive composition on the first textile
Data Source
AI summary
Disclosed herein are improved methods for bonding textiles using an adhesive composition.