In order to achieve good foil stamping effect in book printing, it is necessary to have appropriate gold foil with good thermal stability, and it is also necessary to cooperate with the type of stamping machine. For example, flat pressing and rolling have different effects, and the elements of temperature, pressure and holding hot pressing time should be matched.

Temperature - in gilding operation, the most suitable temperature is to be able to press the lowest and clear texture as the standard in book printing. The temperature of platen hot stamping machine is about 110 �? while that of rolling bronzing machine is 140 �?- 150 �? The most suitable temperature is to find out by experiment. If the temperature is too high, the gilding paper will be deteriorated and the lines will be blurred.

Pressing time - based on the shortest pressing time and good hot stamping effect on book printing, if the time is too long, the gold foil and the paper products will be damaged, and the flash foil will also turn into a dull color foil.

In addition, the pattern to be hot stamping should be accurately aligned with the printed pattern. When using the rolling type bronzing machine or large-area hot stamping, it is necessary to reduce the negative film phenanthrene for stamping to 99.8% to 99.7%, and then arrange to make an electric plate, so that the electric plate will be expanded by heat on the hot plate.

The price of stamping depends on what kind of gold foil is used, whether there is waste of gold foil, in line with the sealing degree, typesetting method, quantity, size, etc., so there is no set of standard calculation method to unify the quotation.

Stamping on cloth leather cover book printing, although it has been pressed very deep, but the foil is easy to fall off.