Protective film manufacturing method

Abstract

The invention provides a method for manufacturing a protective film. The method comprises the following steps of: cutting a roll material into a sheet; coating the surface of the sheet with a releaselayer through a processing means to form a processed sheet; forming a film sheet from the processed sheet by a cutting means; carrying out injection molding on the film sheet to form a semi-finished product; and performing a trimming means on the semi-finished product to obtain a protective film finished product. With the method, a high-precision protective film finished product is formed throughinjection molding.

Description

technical field [0001] The present invention relates to a manufacturing process, in particular to a method for manufacturing a protective film. Background technique [0002] In recent years, electronic devices with large screens such as smartphones and tablet devices have been widely used by the public, and screen protectors for protecting the screens have emerged as the times require. Nowadays, most of the protectors are made of tempered glass to increase the protection strength and Durability. [0003] The manufacturing process of the general glass protector is: (1) cutting the glass; (2) grinding and drilling the cut glass; (3) washing the film; (4) increasing the toughness of the glass with chemical liquid ; (5) AS anti-fouling coating (Anti-SmudgeCoating). That is to say, the general glass protector itself does not have anti-fouling effect, and needs to be coated to increase the anti-fouling effect, but the coating tends to lose its effect gradually with the use of ti...

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Problems solved by technology

That is to say, the general glass protector itself does not have anti-fouling effect, and needs to be coated to increase the anti-fouling effect, but the coating tends to lose its effect gradually with the use of time, and it is easy to detach from the glass, reducing the service life of the glass protector

[0004] Moreover, in order to allow users to have a better visual experience to enjoy the photos and videos presented on the electronic device, some manufacturers have developed electronic devices with curved screens. However, when users want to paste When the protective sticker is used to protect the screen, it is often due to the curvature of the screen that the protective sticker cannot be completely attached to the screen. Even if it is fully fitted, white edges will be formed on the edge of the protective sticker.

[0005] In China Taiwan Patent No. M528872 and M519066, it is mentioned that the curved surface part of the protector is made by thermoforming to effectively fit the screen completely; The material is plastically deformed or separated to obtain a finished product of the desired shape and size, so the precision of the finished product is easily affected by the application of external force and temperature control, so it is impossible to ensure the consistency of quality and precision of each finished product

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