Knife extraction process for protective film production

Abstract

The invention discloses a knife extraction process for protective film production. The process includes the steps: firstly, compounding a blue film, an adhesive PET (polyethylene terephthalate) film and a double-faced adhesive tape; secondly, pasting a soft silicone film on the double-faced adhesive tape, and performing outline die cutting; thirdly, taking away outline waste; fourthly, taking awaythe soft silicone film and the double-faced adhesive tape on the inner side of a die-cutting boundary; fifthly, taking away the double-faced adhesive tape and blue film waste on the outer side of thedie-cutting boundary; sixthly, compounding and pasting bottom paper on the blue film; seventhly, taking away the adhesive PET film to form a finished product. The blue film on the inner side of the die-cutting boundary is unstuck, textured paper is pasted on the double-faced adhesive tape remained on the outer side of the die-cutting boundary and cannot be adhered with the blue film on the innerside of die-cutting boundary, the double-faced adhesive tape and blue film waste on the outer side of the die-cutting boundary can be taken away when the textured paper is torn away, and only the bluefilm on the inner side of the die-cutting boundary remains.

Description

technical field [0001] The invention relates to the field of protective film production, in particular to an extraction knife process for protective film production. Background technique [0002] In order to prevent the screen of digital products from being scratched during use, it is necessary to paste a protective film on the screen of digital products. The protective film has the advantages of high surface hardness and high transparency. [0003] The raw materials of the protective film are divided into PET black film, blue film, release paper, etc. Taking the protective film made of blue film raw materials as an example, it mainly includes backing paper and blue film, and the backing paper and blue film are glued to each other by glue. catch. In the production process of the protective film, a layer of lining material needs to be pasted on the surface of the blue film, and the lining material is torn off to expose the rubber surface during processing, and then bonded an...

AI Technical Summary

Problems solved by technology

[0004] In the process of preparing the protective film in the prior art, the raw material blue film is a strip-shaped diaphragm with a large width. After bonding with the lining material, the blue film of the required specification is formed by die-cutting. The array is distributed on the lining material, and the arrangement is relatively dense, and then it needs to form the outline shape of the mobile phone screen or other digital screens. After die-cutting, the blue film waste on the lining material (the blue film outside the die-cutting boundary is the blue film waste) to tear off, and keep the blue film of the required specifications. The tear-off process is: first glue a layer of masking paper on the blue film, then tear off the masking paper and stick the blue film waste away, but the blue film specification Relatively small, similar to the size of the waste material, the bonding strength of the lining material to the blue film is equivalent to that of the lining material to the waste material, and it is easy to stick the formed blue film away during the process of sticking the masking paper

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