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Release film coating process and key characteristics (2)-film supplier

by:POLYVA     2022-01-26
The characteristics of each coating method Smooth roller coating This type of coating adopts a two-roll or multi-roll transfer coating method. Adjusting the gap between the rollers and the ratio of rotation speeds can adjust the size of the coating. The structure of the entire coating head is relatively complex, requiring high processing accuracy and assembly accuracy of the sizing roller, coating roller, traction roller, and doctor blade, and the cost is high. Because this type of coating machine uses a high-precision light stick for coating and gluing, the coating effect is good. In addition to adjusting the amount of coating through the gap between the gluing roller and the coating roller, it can also be adjusted by the micro-motion of the coating blade. Comes with flexible control and high coating precision. Anilox coating This kind of coating equipment mainly uses anilox (concave eye) coating rollers for gluing. Its unevenness is good and the coating amount is accurate, but the disadvantage is that the coating amount is difficult to adjust. When coating with anilox roller, the amount of coating is not related to the depth of the pit of the anilox roller and the characteristics of the glue itself (viscosity, solid content). Squeegee coating Squeegee coating often has uneven gluing, which is mainly related to the processing accuracy of the squeegee, the angle of the squeegee applied to the backing wheel when the squeegee is installed, and the viscosity of the coating. The flatness accuracy of the squeegee is required to be high, which means that the squeegee does not warp, deform or chip, otherwise the coating amount will have a large error. During coating, the angle between the scraper and the tangent line of the glue wheel is generally between 15o and 30o. If it is too large, it will be scraped to almost against the rubber wheel. The scraper will easily cause vibration when the rubber wheel is running at high speed. Cause uneven coating and large difference in coating amount. In addition, it can also cause unevenness and scratches on the coated film surface, and also easily cause damage to the blade of the squeegee. 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 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!
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