影响压光质量的主要因素

1、压光温度
1. Calendering temperature
适当的压光温度，可使涂料膜层分子热运动能力增加，使扩散速度加快，有利于涂料中主剂分子对印刷品表面的二次润湿、附着和渗透。另外，适当的温度会使涂料膜层塑性提高，在压力作用下，使其表面平滑度大大提高，适当的压光温度有利于提高压光膜层质量，但温度过高或过低都不利于压光。
The appropriate calendering temperature can increase the molecular thermal movement ability of the coating film and accelerate the diffusion rate, which is beneficial to the two wetting, adhesion and penetration of the main agent on the surface of the printed matter. In addition, the proper temperature will make the paint film to increase ductility under pressure, so that the surface smoothness is greatly improved, the pressure of light temperature properly is helpful to improve the film quality of light pressure, but the temperature is too high or too low is not conducive to the pressure of light.

2、压力
2, pressure
压力的作用是将涂料层压缩变薄，使其形成光滑的表面层。但如果压力过大，会使印刷品的延伸性、可塑性及韧性变差，出现剥离困难的现象。
The effect of pressure is to compress and compress the coating so as to form a smooth surface layer. However, if the pressure is too great, it will cause the extension, plasticity and toughness of printed matter to become worse, and the phenomenon of peeling off will appear.
3、速度
3, speed
压力速度即上光油在压光中的固化时间。如果固化时间短，上光油分子同印刷品表面墨层不能充分作用，干燥后膜层表面平滑度差，上光油层对油墨层的黏附强度差。
Pressure, speed, i.e., the curing time of the varnish in the calendering. If the curing time is short, the oil polish molecules and printing surface ink layer can not fully function, after drying the film surface smoothness is poor, the oil layer on the ink layer adhesion strength is poor.
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