Department of news

How to solve the problem that hot stamping paper cannot be hot stamped after waterborne coating

 With the improvement of the user's pursuit of special and personalized effects on the printed surface, more and more printed products are applied with the process of applying hot stamping and hot stamping. After all, waterborne glazing is colorless, odorless, non-toxic, non-organic volatiles, strong transparency and low cost; it can also enhance the glossiness, water resistance, abrasion resistance, etc. of paper prints and can make products have good gloss and resistance. Folding, abrasion resistance, oil resistance, water resistance and chemical resistance, etc., so many manufacturers will give priority to water-based coating and then stamping the product with hot stamping decoration process.

Gold foil paper

However, after the printing process has been completed on the glossy film layer after the water-based glazing process, the product graphic will often appear with flowers, exposed or not transferred at all. What should I do? In order to solve this problem, relevant technical personnel should analyze the causes of this phenomenon, and then do the corresponding treatment.

The characteristics of Hot stamping paper (heatability), hot stamping speed, temperature, pressure, time and hot-melt adhesive of hot stamping paper on the surface of the substrate, the choice of water-based gloss oil, etc. The effect of hot stamping on the gloss of the oiled product. Therefore, when the selected bronzing paper does not match the surface properties of the lacquer film layer, generally high-viscosity bronzing paper can be replaced; when the tamping speed, temperature, pressure, and time are not appropriate, corresponding adjustments can be made; When there is no problem, you need to consider replacing the water-based gloss oil.