Reasons and solutions for ink transfer after PET film dry composite-film supplier
1. The reason why the ink transfer occurs after the dry compounding of the PET film. Because the PET film has excellent barrier properties and strong anti-leakage properties, it is difficult for the solvent to penetrate, and the solvent inhalation of the ink is relatively poor. The binder (resin) of the plastic surface printing ink has a good affinity with the PET film, so printing on the PET film is stronger than the printing ink in the plastic composite. In fact, the ink layer transfer of the printed PET film after compounding has nothing to do with the use of surface printing ink. Instead, the use of compound inner printing ink is more prone to ink transfer. 2. Solution Two points should be paid attention to during PET film printing and dry lamination: 1. The amount of glue applied during lamination must be small, and the solvent of the composite glue should evaporate as much as possible when passing through the drying tunnel (check the exhaust air of the drying tunnel frequently. Whether the system is unblocked, the temperature of the composite hot drum of the laminating machine should not be lower than 70℃. 2. The ink should be used as little as possible, and the ink should be dry (dry) to prevent the phenomenon of false drying of the ink (especially the use of chlorinated polypropylene composite When printing with plastic ink). If the printing speed of the printer cannot be turned on, and the effect of the drying box is poor, you can rewind the printed matter once, and blow air or leave it for some time during rewinding, and then recombine after the ink hardens. (It is best to rewind and blow air after printing to prevent adhesion of the printed film.) It is a professional manufacturer of PET film with multiple functions, such as: transparent PET film, milky white PET film, release PET film, and supply PET motor film A wide range of products, affordable prices, technology and environmental protection, we provide customers with excellent quality and service based on the service tenet of excellence in production, honesty and trustworthiness in distribution, enthusiasm and thoughtful service, and the spirit of helping partners achieve their own careers . Interested parties welcome to inquire!