The post-processing technology of glass bottles - pad printing, thermal transfer process

1. Introduction of pad printing process

Pad printing is an indirect concave rubber head printing technology. By making a specific steel plate pattern and using a rubber head to transfer the content of the etched pattern to the product, it has become a kind of surface printing and decoration of various objects. main method.

Principle: The process is very simple. First, the designed pattern is etched on the printing plate, and the etching plate is coated with ink. Then, most of the ink is transferred to the printed object through the silicone head.

The main problems and solutions of production:

1. Pad printing font burrs: After pad printing, there are small feathery burrs on the edge of the font, and the font is hypertrophy; the ink is too thin and not fast enough to dry; the humidity is too high;

Solution: A. Reduce the amount of ink thinner; adjust the ink to dry quickly; B. A hot air blowing device is added to the rubber head; C. Reduce the humidity in the workshop and reduce the etching depth of the steel plate;

2. Deformation of the pad printing pattern: the surface of the product after pad printing is distorted and deformed, mostly at the edge of the pad printing area; the shape of the selected pad printing head is not ideal; the ink is too thin; the glue head is deformed after long-term use; the fixture moves ;

Solution: A. Choose a suitable taper and hard pad printing pad; B. Replace the pad printing pad; C. Adjust the position of the fixture;