Improper operation of heat transfer silicone may cause a series of problems, including but not limited to:
Lack of glue or incomplete shape: This is mainly caused by the misalignment of the glue, insufficient glue, or poor flowability of the glue. During operation, ensure that the glue is sufficient and properly placed, as well as the good flowability of the glue.
Cracks: There may be cracks on the surface of the product, which is usually caused by excessively high operating temperature, incorrect operation method, and poor control of the hot stamping time. When performing heat transfer, the temperature and time should be strictly controlled to avoid excessive or prolonged heating.
Deformation: The product may be twisted or uneven, which is mainly due to excessive pressure or pulling the textile when the silicone heat transfer is not dry. Therefore, the pressure should be properly controlled during operation, and the silicone heat transfer should be ensured to be completely dry before subsequent processing.
Scratches: There may be abrasions, scratches and other undesirable phenomena on the surface of the product, which is mainly caused by improper operation or contact with foreign objects. During operation, the working environment should be kept clean to avoid contact between foreign objects and silicone products.
Impurities or dirt: This may be caused by impurities in the silicone raw materials or impurities in the machine printing position. Therefore, the cleanliness of the silicone raw materials and the machine printing position should be carefully checked before use.
Sticking or burr drawing: This may be caused by the mold temperature being too high, the mold residue, or the printing time being too long. Before performing heat transfer, the mold should be clean and at the appropriate temperature.
Warping: When there is no problem with the parameters of temperature, time, and pressure, there will still be some warping, which may be due to improper tearing time. The hot melt adhesive film has not solidified when the hot-tear of the hot label has just been hot-teared, resulting in poor adhesion and warping. Therefore, for silicone heat transfer lettering film products, they are basically cold-teared. It is recommended to tear them off after the hot melt adhesive is completely solidified after 3 to 6 minutes.
In summary, in order to avoid these problems, the operator needs to strictly abide by the operating procedures of heat transfer silicone to ensure that every step is correct. At the same time, the operating environment, equipment, and materials should also be strictly inspected and maintained to ensure the printing quality of thermal transfer silicone.