What is the rainbow pattern of PET film? -Film supplier

When choosing PET release film, the appearance of the product has always been valued by many buyers. However, there are many reasons for the unsatisfactory appearance of the product, so let's take a look at what factors affect the appearance quality of PET release film? Rainbow pattern-the key first step: Release film and rainbow pattern are originally unrelated, but since the silicon on the two, the two are inseparable, so whether there is rainbow pattern, it becomes the investigation of release The critical first step for membranes. The main reason for the formation of the rainbow pattern is the solvent. In the production process, in order to reduce the coating amount as much as possible, it is necessary to add more solvent oil. The direct result is that there is more solvent oil on the release paper than silicone oil. During the thermal drying process, the solvent oil evaporates, leaving a rainbow pattern. If we need to attach high-viscosity tapes such as 3M TESA, or when we need to punch a small shape, we must choose the appropriate release paper. Because the shape of the punching material is very small, a very light release force is required, but if the release force is too light, it will fly off during the punching process and the position will change. The high-end industrial tapes we use every day basically use oil glue, so the release film is very demanding. Whether there is rainbow pattern or not directly affects the applicability of the tape. It 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 range 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, warm and thoughtful service, and the spirit of assisting partners to achieve their own careers. Interested parties welcome to inquire!