Heat transfer label
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Solution Overview
Problem
Performance fabrics, such as polyester, are challenging for heat transfers due to their susceptibility to damage during the heat application process, requiring improved adhesion and compatibility between toner-based images and silicone-based heat transfer inks without degrading the curing process.
Innovation Solution
A heat transfer label construction incorporating a silicone-based compatibility layer, comprising decamethyltetrasiloxane, tetraethyl orthosilicate, and Titanium (IV) butoxide, which adheres a digitally printed toner layer to a heat transfer silicone ink layer, ensuring secure adhesion and resistance to water and abrasion, while preventing contamination and maintaining the curing process integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If heat transfer is applied to performance fabrics, then decorative components can be added, but the fabric is susceptible to damage due to heat application
Solution Approach 1:
A silicone-based compatibility layer is introduced as an intermediary between the toner image layer and the heat transfer silicone ink layer. This compatibility layer contains specific chemical components that facilitate adhesion without requiring excessive heat, thereby protecting the performance fabric from heat damage while enabling successful heat transfer application.
2Strength
If toner-based images are transferred to silicone-based heat transfer inks, then adhesion is improved, but compatibility issues arise between the two different material systems
Solution Approach 1:
The silicone-based compatibility layer serves as a mediator between the toner-based image layer and the silicone-based heat transfer ink layer. It contains chemical components that are compatible with both material systems, enabling effective adhesion while resolving the fundamental incompatibility between toner and silicone materials.
Solution Approach 2:
The compatibility layer is formulated as a composite material containing multiple components including silicone-based polymers, adhesion promoters, and crosslinking agents. This composite structure provides both adhesion to the toner layer and compatibility with the silicone ink layer, bridging the gap between the two different material systems.
3Strength
If adhesion promoters are added to improve bonding, then the curing process may be degraded or contaminated
Solution Approach 1:
The compatibility layer is formulated with specific parameter optimizations including controlled molecular weight, functional group density, and crosslinking rate. These parameter changes enable the adhesion promoter to function effectively while maintaining compatibility with the curing process, preventing contamination and ensuring reliable curing.
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 solution enables secure and durable transfer of images onto performance fabrics, enhancing the adhesion and durability of heat transfers on polyester and cotton blends, while maintaining the integrity of the curing process and preventing contamination.
Implementation Method 1
The compatibility layer adheres the toner layer to the heat transfer silicone ink layer
Implementation Method 2
for transfer of the transfer portion from the support portion to a fabric substrate under conditions of heat and pressure
Data Source
AI summary
The present invention relates to heat transfers that include silicone based heat transfer inks and digitally printed toner images, particularly for use on fabrics, apparel items, garments and accessories. The present subject matter is especially suitable for use in heat-transferable labeling or creating embellishments on polyester fabrics and garments.