Milky white PET film, release PET film, high quality and low price-film supplier

by:POLYVA     2021-11-09
1. Measurement of coating thickness: The coating thickness that can be measured online refers to the wet coating thickness, that is, the thickness of the coating solution before drying. The coating thickness is directly related to the coating quality. For example, the cooking-resistant coating film, if the coating thickness is too low, it will reduce the bonding force with the aluminum layer, resulting in the reduction of the cooking-resistant performance after the bag is made. Coating thicknessu003dcoating liquid consumption/coating areau003dcoating consumption in fixed time/coating width×coating length (TDO speed×measurement time) 2. Coating thickness adjustment: after adjusting the rubber roller above the gravure roller Position, can adjust the coating wrap angle on the gravure roll, increase or decrease the contact area between the gravure roll and the cast sheet, to achieve the purpose of adjusting the coating thickness. The rotation speed of the gravure roller can also be adjusted to adjust the coating thickness. If the coating thickness gradually decreases under normal production conditions, it should be caused by the clogging of the coating roller. It is necessary to stop coating immediately, clean the coating system, and clean the coating roller. If it still does not work, the coating roller must be replaced. 3. The leveling of the coating liquid: the coating liquid needs to be evenly coated on the coating roller. In order to achieve this effect, it is necessary to perform corona treatment on the cast sheet before coating to enhance the surface tension of the cast sheet, and at the same time It is necessary to add a proper proportion of wetting agent to the coating solution to enhance the leveling effect. However, adding a wetting agent may cause bubbles and drying problems in the coating liquid, and it needs to be added appropriately according to actual needs. 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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