Water-based adhesive removal agent for plastic film for package printing

Abstract

A water-based adhesive removal agent for a plastic film for package printing is prepared from components in percentage by weight as follows: 17%-40% of a main solvent, 17%-40% of a cosolvent, 0.05%-5% of a surfactant, 0.5%-5% of an antifoaming agent and 20%-60% of water. With use of a swelling action of effective ingredients in the adhesive removal agent on a composite adhesive, a composite adhesive layer on the surface of the film is swelled rapidly to fall off. Under the action of the antifoaming agent, the adhesive removal agent cannot produce a large amount of foam when reused in a cleaning machine. The adhesive removal agent has the characteristics that a preparation method is simple, the adhesive removal agent is stable and not prone to delamination or volatilization, the adhesive is removed rapidly, damage to a film substrate is not produced, heating is not needed when the adhesive removal agent is used at the room temperature, the adhesive removal agent can be reused in the cleaning machine, a large amount of foam cannot be produced and the like.

Description

technical field [0001] The invention relates to a degumming agent used in the packaging and printing industry, in particular to a degumming agent for plastic films used in packaging and printing. Background technique [0002] Vacuum aluminum-coated paper is widely used in the packaging of cigarette packs, wine packs, food, cosmetics, gifts, handicrafts, and daily necessities due to its bright color, strong metallic feeling, and bright and elegant prints. At present, vacuum aluminized paper can be divided into direct evaporation method and transfer evaporation method according to its production process. Among them, the transfer evaporation method is to glue the PET film after vacuum aluminum plating and compound it with cardboard, and then peel off the PET film, and the aluminum molecules are transferred to the surface of the cardboard through adhesion. The transfer evaporation method is further divided into full-format transfer and partial transfer. After the aluminized fi...

AI Technical Summary

Problems solved by technology

[0005] The degumming agent is recycled in the cleaning machine. Due to the action of the eluted adhesive and the organic solvent of the degumming agent itself, it is easy to form a large amount of foam, and it is not easy to dissipate, resulting in a large consumption of the degumming agent and the adhesive layer on the surface of the film.