What are the application skills of hot stamping in BOPP synthetic paper printing?

The application skills of hot stamping in BOPP synthetic paper printing mainly include the following aspects:

First, the choice of hot stamping materials

1.Electrochemical aluminum foil: It is very important to choose an electrochemical aluminum foil suitable for BOPP synthetic paper. The color, gloss, adhesion and other properties of the electrochemical aluminum foil need to be matched with the BOPP synthetic paper to ensure the beauty and durability of the gilding effect.

2.Adhesive: In the cold stamping process, the choice of adhesive is also particularly critical. An adhesive with good adhesion to BOPP synthetic paper needs to be selected to ensure that the electrochemical aluminum foil can adhere firmly to the surface of the paper.

Second, adjustment of hot stamping process parameters

1.Temperature control: In hot stamping process, the control of temperature directly affects the effect of hot stamping. It is necessary to adjust the appropriate bronzing temperature according to the characteristics of the electrochemical aluminum foil and BOPP synthetic paper to avoid the deformation of the paper or the burning of the electrochemical aluminum foil due to too high temperature, or the temperature is too low resulting in the bronzing is not fast.

2.Pressure adjustment: The size of the bronzing pressure also needs to be adjusted according to the specific situation. The appropriate pressure can make the electrochemical aluminum foil better adhere to the surface of the paper, while avoiding excessive pressure resulting in paper damage or deformation of the electrochemical aluminum foil.

3.Speed matching: The stamping speed and the paper conveying speed need to be matched to ensure the accuracy of the stamping position and the uniform effect of the stamping.

Third, the design and production of hot stamping plate

1.Pattern design: The design of the gold stamping pattern should consider the characteristics of BOPP synthetic paper and the performance of the gold stamping effect. The pattern should be simple and clear, and the lines should not be too thin to avoid breakage or blurring during the bronzing process.

2.Hot stamping plate production: The production of hot stamping plate needs to be accurate to ensure the accuracy and clarity of the hot stamping pattern. The high precision plate making technology such as laser engraving can improve the production quality and effect of hot stamping plates.

Fourth, precautions in the process of hot stamping

1.Cleaning work: Before stamping, ensure that the stamping machine, electrochemical aluminum foil and BOPP synthetic paper are clean. Avoid dust, oil and other impurities affect the bronzing effect.

2.Hot stamping order: according to specific needs, reasonable arrangement of hot stamping order. If you need to print before stamping, you need to ensure that the printing is dry before the stamping operation, to avoid the ink is not dry resulting in poor stamping effect.

3.Quality check: After the completion of hot stamping, the quality check of hot stamping effect should be carried out. Check whether the sharpness, gloss, adhesion and other properties of the stamping pattern meet the requirements. If there are problems, adjust and deal with them in time.

Fifth, combined with other processes to improve the effect

1.Local UV glazing: The local UV glazing treatment in the stamping part can increase the brightness and three-dimensional sense of the stamping pattern, and improve the overall visual effect.

2.Embossing: combined with embossing process, you can make the gold stamping pattern more prominent and three-dimensional, enhance the touch effect.

In summary, the application skills of hot stamping in BOPP synthetic paper printing involve many aspects, including the selection of hot stamping materials, the adjustment of process parameters, the design and production of hot stamping plates, the precautions in the process of hot stamping and the combination of other processes to improve the effect. By mastering these skills, you can ensure the beauty and durability of the gilding effect, and improve the overall quality of the product.