How to do the pressing of silicone heat transfer trademarks?
To ensure that the pressing effect of silicone heat transfer trademarks is firm, beautiful and durable, it is necessary to strictly control parameters such as material selection, temperature, pressure and time. The following are detailed operating steps and precautions:
1. Material preparation
Silicone heat transfer film
Choose a silicone transfer film that matches the fabric (such as for polyester, nylon or blended fabrics).
Check whether the transfer film has delamination or cracks, and ensure that the surface is smooth and free of impurities.
Printed material (clothing/fabric)
The fabric needs to be resistant to high temperatures (synthetic fibers such as polyester and spandex work best, and cotton cloth needs to be pre-coated).
Ensure that the surface is clean, dry, and free of oil stains or softener residue.
Equipment and tools
Heat transfer machine (flatbed or roller machine) or industrial heat press machine.
Silicone pad or heat-resistant pad (for uniform heating and protection of fabric).
2. Pressing parameter settings
Key parameters Recommended range Notes
Temperature 150–170°C Below 150°C may result in poor adhesion, and above 180°C may burn the silicone.
Pressure 3–5 kg/cm² Insufficient pressure may cause it to fall off, and too high pressure may flatten the silicone texture.
Time 10–15 seconds (depending on thickness) 10 seconds for thin silicone film, and 20 seconds for thick three-dimensional labels.
3. Operation steps
Preheating equipment
Preheat the heat transfer machine to the set temperature and ensure that the temperature of the heating plate is uniform (can be checked with an infrared thermometer).
Positioning transfer film
Place the silicone trademark film on the fabric and cover it with heat-resistant release paper or PET protective film.
Use high-temperature tape to fix the edges to prevent displacement.
Press down the heat press head to ensure that the pressure covers the entire pattern evenly.
Sectional pressing (optional): first press lightly for 3 seconds to preheat, then press fully for 10–12 seconds.
Cooling and peeling
Immediately peel off the protective film (hot tearing) or cool to room temperature before tearing (cold tearing), and operate according to the instructions of the transfer film.
IV. Quality inspection and common problem solving
Inspection standard
Adhesion test: Rub by hand or tear after tape sticking, no peeling is qualified.
Washability: Washing (40°C) for more than 5 times without warping or cracking.
Common problems and countermeasures
Silicone is not sticky: insufficient temperature or too low pressure; check whether the fabric contains silicone oil (pretreatment is required).
Edge warping: insufficient pressing time or premature cooling; extend the pressing time and ensure cold tearing.
Texture blur: excessive pressure or high temperature; reduce parameters and test samples.
V. Precautions
Environmental requirements: Ventilate the working area to avoid the accumulation of high-temperature silicone gas release.
Equipment maintenance: Clean the heating plate regularly to prevent residual silicone from affecting heat transfer.
Safety protection: Operators wear heat-resistant gloves to avoid burns.
VI. Recommended application scenarios
Highly elastic fabrics: sportswear, swimsuits (silicone labels are not easy to break after stretching).
Three-dimensional effects: brand logos, reflective logos (3D silicone transfer film is required).