Plastic film printing techniques

PET plastic film is not easy to stretch, tension control requires PE plastic film is low, often used in India printing process, and CPP complex cooking bag. The PET plastic film has good insulation properties, and is prone to static electricity during the printing process and is not easily lost. The drying temperature of PET plastic film can be controlled higher, but its film surface temperature should not exceed 85°C. When winding up, the film should be cooled to room temperature or slightly above room temperature.

The LDPE plastic film has a low expansion strength, a large tensile elongation, and it is difficult to set the tone. Therefore, the tension control during printing is small, and the tension is constant everywhere. In order to guarantee the accuracy of overprinting, it is better to use a large roller type printing machine. A small amount of LDPE plastic film will be softened by heat, and it is easily stretched and deformed. For this reason, the surface temperature of the film should not exceed 55°C when printing and drying. In order to prevent ink sticking, the film temperature should be cooled to 35°C or lower during winding.

PE plastic film inks have poor adhesion and need to be treated with electricity to improve. Three kinds of LDPE, LLDPE plastic film in 38-420mN / m, HDPE plastic film in 40-44mN / m is better, commonly used polyamide ink printing.

The LDPE plastic film has a low expansion strength, a large tensile elongation, and it is difficult to set the tone. Therefore, the tension control during printing is small, and the tension is constant everywhere. In order to guarantee the accuracy of overprinting, it is better to use a large roller type printing machine. A small amount of LDPE plastic film will be softened by heat, and it is easily stretched and deformed. For this reason, the surface temperature of the film should not exceed 55°C when printing and drying. In order to prevent ink sticking, the film temperature should be cooled to 35°C or lower during winding.

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