Zero-damage processing technology of protective film

Abstract

The invention relates to a zero-damage processing technology of a protective film. The technology comprises the following steps that 1) a membrane and a bottom film are unwound, the membrane is attached to the bottom film, and the membrane and the bottom film are conveyed to a cutting system; 2) the membrane and the bottom film pass through a waste edge roll cutting unit so as to enable an edge of the membrane to be subjected to roll cutting, and the cut waste edge is separated from the bottom film and is recycled; 3) roll cutting is conducted on a redundant part, a waste material is collected, and the roll-cut molded membrane and the bottom film are fed into a membrane collecting system; and 4) the membrane enters a pre-stripping area and is stripped from the bottom film at a small angle, at the moment, the membrane keeps inertial linear motion and horizontally moves forwards until the bottom film moves downwards to a stripping area, then the membrane falls into a membrane receiving frame in front, and the bottom film is wound. According to the technology, on one hand, damage to the bottom film is avoided through quantitative roll cutting; and on the other hand, due to the arrangement of a pre-stripping surface, a stripping process of the membrane is gradual, so that a damage rate of the membrane is greatly reduced, and meanwhile, zero-damage rolling of the bottom film can be realized.

Description

technical field [0001] The invention belongs to the technical field of protective film processing, and in particular relates to a zero-damage processing technology for a protective film. Background technique [0002] As the performance requirements of the protective film are getting higher and higher, therefore, the roll cutting process of the protective film tends to be dust-free and automatic. [0003] At present, after the protective film is cut or punched in multiple ways, the excess part is removed, and the cut excess part is collected through the tape and waste edge winding, so that the diaphragms of the protective film are distributed on the base film at intervals, Then, the membrane is peeled off from the bottom mold by the peeling mechanism to complete the processing of the membrane. [0004] Yet there is following defective in above-mentioned processing procedure: [0005] 1. During slitting or punching, it is difficult to control the cutting depth of the diaphra...

AI Technical Summary

Problems solved by technology

[0005] 1. During slitting or punching, it is difficult to control the cutting depth of the diaphragm, which can easily cause damage to the bottom film, which is not conducive to the reuse of the bottom film;

[0006] 2. Most of the peeling mechanisms used are roller-type glass mechanisms. Although the separation of the diaphragm and the bottom film can be achieved, there is no buffer process in the peeling process, and the separation of the diaphragm and the bottom film is directly achieved by the forced peeling mode. , therefore, to a certain extent, it will cause the deformation of the diaphragm, so that the flatness of the diaphragm cannot meet expectations. At the same time, the damage to the bottom mold is also relatively large, which is not conducive to the reuse of the bottom film

Images