PET film, transparent PET film, milky white PET film, provide excellent quality and service. -Film supplier
The production process of online coating is mainly composed of coating liquid preparation, coating liquid supply, film corona treatment, gravure coating, drying system and other parts. The coating liquid needs to be stirred in the liquid supply tank for a period of time to make a coating liquid that can be used for online coating. The prepared coating liquid is pumped into the intermediate tank through the liquid supply pump. After the polyester film is longitudinally stretched by the longitudinal stretching device, a corona device is required to corona treatment on the surface of the film to increase the surface tension of the film and enhance the wetting performance. At the same time, the intermediate pump pumps the coating liquid in the intermediate tank into the closed doctor blade cavity, and the gravure roller transfers the coating liquid in the cavity to the film surface through the contact wrap angle with the film, forming a coating layer on the film surface. The film covered with the coating liquid then enters the transverse stretching equipment. In the preheating section of the transverse stretching, the coating liquid volatilizes water during the drying process, and finally a uniform chemical treatment layer is formed on the surface of the film. Is a company specializing in the production of PET film with multiple functions, such as: transparent PET film, milky white PET film, release PET film, supply of PET motor film, etc. With a wide variety of products, affordable prices, 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, and warm and thoughtful service. Interested parties welcome to inquire!