Process for producing PET laser transfer membrane

Abstract

The invention relates to a process for producing a PET laser transfer membrane. A PET membrane is used as a basement transfer membrane, and laser transfer pigment is coated and spread on the PET membrane. The method includes the following steps: a laser transfer pigment is coated and spread on the PET basement transfer membrane by an anilox roll at one step to form a coating layer, and a precoating membrane can be formed after the operation of drying is carried out; the precoating membrane is processed by the operation of laser mould pressing, and interference figures on a laser slab are printed on the coating layer of the precoating membrane by heat pressing so as to form a mould pressing membrane; and aluminum is coated on the mould pressing membrane, an aluminum layer is formed on an information layer, and the PET laser transfer membrane can be prepared, wherein the pigment includes thermoplastic acroid resin and cellulose acetate. The process has the advantages that the special singly coated laser transfer pigment and the unique manufacture process control are selected, and the entire process is simple, novel, stable and reliable. As the laser mould pressing transfer coating layer has the properties of easy mould pressing, favorable stripping, and the like, the operation of coating just needs to be carried out for one time, and therefore the production efficiency can be greatly improved. After being transferred and stripped, the aluminum coated membrane can be recycled to be repeatedly used for many times, and therefore cost can be greatly reduced; and the PET laser transfer membrane is the environmentally friendly anti-counterfeit laser material for packaging and printing.

Description

technical field [0001] The invention relates to the technical field of packaging and printing, in particular to a manufacturing process of a PET laser transfer film for packaging and printing. Background technique [0002] The general laser film for packaging and printing is mainly BOPP laser composite film or secondary coated PET laser transfer film. Due to the manufacturing process of BOPP laser composite film, there are problems such as easy deformation of the base film, large cutting edge loss, slow molding speed, low production efficiency, and the base film cannot be recycled after composite printing, which is not environmentally friendly; the secondary coating PET laser transfer film The advanced manufacturing process requires two coatings, that is, coating a release layer first, and then coating an information layer, in order to achieve the functions of peeling and molding imaging, so there are also problems such as low production efficiency and easy deformation of th...

AI Technical Summary

Problems solved by technology

Due to the manufacturing process of BOPP laser composite film, there are problems such as easy deformation of the base film, large cutting edge loss, slow molding speed, low production efficiency, and the base film cannot be recycled after composite printing, which is not environmentally friendly; the secondary coating PET laser transfer film The advanced manufacturing process requires two coatings, that is, first coat a release layer and then coat an information layer to achieve the functions of peeling and molded imaging, so there are also problems such as low production efficiency and easy deformation of the base film.

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