How to avoid curling of silicone heat transfer trademarks?
To prevent silicone heat transfer trademarks from curling, follow these key measures:
1. Optimize Curing Conditions
Temperature & Time: Ensure proper curing (typically 150–180°C for 10–30 seconds). Under-curing or over-curing can cause curling.
Even Heating: Use a heat press with uniform pressure and temperature distribution to avoid uneven shrinkage.
2. Material Selection
High-Quality Silicone Ink: Use flexible, thermally stable silicone inks designed for heat transfer.
Base Fabric Compatibility: Choose fabrics with similar thermal expansion properties (e.g., polyester blends) to reduce stress.
3. Design Adjustments
Avoid Large Solid Areas: Break designs into smaller sections or add micro-perforations to reduce tension.
Borderless Designs: Curling often occurs at edges; consider seamless integrations.
4. Application Techniques
Proper Adhesion: Ensure the fabric surface is clean and pre-treated (if needed) for better bonding.
Cooling Under Pressure: Let the design cool slightly under the press before peeling to minimize warping.
5. Post-Processing Care
Avoid Immediate Stretching: Let the fabric cool completely before handling.
Low-Temp Washing: Wash garments inside-out in cold water to preserve adhesion.
6. Storage & Handling
Flat Storage: Store heat transfer sheets flat in a cool, dry place to prevent pre-application warping.
By addressing these factors-curing, material compatibility, design, and handling-you can significantly reduce curling issues. Testing on a small batch before full production is also recommended.