1. The hot stamping temperature of cloth hot stamping paper is too low, and the hot stamping temperature of printing plate is too low, which can not reach the minimum temperature required for electrochemical aluminum foil to separate from the film base and transfer to the substrate. During hot stamping, the hot stamping paper is not completely transferred, resulting in graphic flower, exposure or hot stamping failure. If this quality problem is found, the temperature of the electric heating plate should be adjusted appropriately in time until a good print is hot stamped.
2. Cloth bronzing paper has low hot stamping pressure. During the hot stamping process, if the hot stamping pressure of the printing plate is too small and the pressure applied to the electrochemical aluminum foil is too light, the hot stamping paper cannot be transferred smoothly, resulting in incomplete hot stamping pictures and texts. If this situation is found, first analyze whether it belongs to low hot stamping pressure, and observe the weight of imprint marks. If it belongs to low hot stamping pressure, increase the hot stamping pressure.
3. The background color is too dry and the surface is crystallized, so that the bronzing paper can not be hot stamped. During hot stamping, the drying degree of the background color shall be printed immediately within the printable range. When printing the background color, the ink layer shall not be too thick. When the printing volume is large, it shall be printed in batches to appropriately shorten the production cycle. Once crystallization is found, the printing shall be stopped immediately, and the printing shall be continued after troubleshooting.
4. The model of cloth bronzing paper is wrong or the quality is not good. When the model of cloth bronzing paper is wrong or the quality is poor, there are also problems with the hot stamping quality. At this time, the bronzing paper with appropriate model, good quality and strong adhesion should be replaced.
matters needing attention:
In addition, it should be noted that if the hot stamping pattern area is relatively large, you can choose to hot stamping twice continuously, which can avoid hairiness, exposure and lack of hot stamping.