High-weatherability BOPP release film and preparation method thereof

Abstract

A BOPP release film with high weather resistance and its preparation method belong to the field of film manufacturing technology. The production process of the present invention is reasonable and clear. The present invention adopts BOPP as the main component of the composite film, and adds BOPP weather-resistant masterbatch at the same time, so that the prepared The weather resistance of the release film is greatly enhanced, and nano-silica is added at the same time, which can improve the mechanical properties of the product and increase its tensile strength by about 150%. In this way, the prepared product is a kind of product with good weather resistance The release film with excellent performance and mechanical properties further expands the application range; it is also convenient for the next step to disperse the matrix and inorganic fillers evenly, and the components are mixed evenly, and the prepared film material is balanced, and natural latex is also added to enhance the viscosity and Flexibility, and finally add some auxiliary additives such as defoamers and thickeners, so that the prepared Harima material has more balanced and superior performance.

Description

technical field [0001] The invention belongs to the technical field of film manufacture, and relates to a method for preparing a release film, in particular to a high weather resistance BOPP release film and a preparation method thereof. Background technique [0002] Release film, also known as peeling film, isolation film, separation film, barrier film, release film, film, plastic film, hole masking film, silicone oil film, silicone oil paper, anti-adhesive film, slip film, Tianna paper, release film Paper, silliconfilm, releasefilm, release. Usually, in order to increase the release force of the plastic film, the plastic film will be treated with plasma, or coated with fluorine, or coated with silicon (silicone) release agent on the surface of the film material, such as PET, PE, OPP, BOPP, etc.; it can show extremely light and stable release force for various organic pressure-sensitive adhesives (such as hot-melt adhesives, acrylic adhesives and rubber-based pressure-sens...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the shortcomings of the existing BOPP release film such as poor weather resistance, and provides a high weather resistance BOPP release film and a preparation method thereof, which can obtain higher weather resistance without adding additional processing steps and processing costs. performance, can meet the use of high-demand occasions