Preparation process of aqueous silvery vacuum aluminized paper and transfer coating used for preparation process

Abstract

The invention discloses a preparation process of aqueous silvery vacuum aluminized paper and a transfer coating used for the preparation process. The transfer coating is uniformly coated on a transfer transparent base film to form a uniform and compact transfer coating and then a continuous bright metal aluminum layer is plated to form a transfer film; the transfer film is adhered to bottom paper by using a transfer adhesive; the base film is separated from the paper sheet, so that only the transfer adhesive, the aluminum layer and the coating are remained on the surface of the paper sheet; the stripped base film can be newly coated and reutilized; the transfer coating consists of aqueous acrylic resin emulsion, matting paste, de-ionized water and absolute ethanol; and the mass ratio of the aqueous acrylic resin emulsion to the matting paste to the de-ionized water is 9-11:1.0-1.5:0.4-0.6. The process has higher temperature resistance level, and also has the characteristics of good viscous resistance, water resistance and leveling property. The aqueous transfer coating has the characteristics of no toxicity, no smell, transparency, stability, environmental friendliness and safety, the cost can be effectively saved, and the displacement of VOC (Volatile Organic Compounds) can be greatly reduced.

Description

technical field [0001] The invention relates to a preparation process of silver vacuum aluminized paper and the transfer coating used therein. Background technique [0002] Vacuum aluminum-coated paper is mainly used in the packaging of cigarette cases; most of the transfer coatings used in vacuum metal-coated paper for cigarette case packaging on the market are solvent-based coatings; and the existing solvent-based coatings are flammable, Explosive, high static electricity, heavy odor; the formula of solvent-based coatings is acrylic resin emulsion, which contains a large amount of organic volatiles: ketones, esters, benzene series, alcohol series, etc.; in addition, solvents in solvent-based coatings The volatilization speed is very fast, and the production workshop smells very heavy, which is extremely unfavorable to the health of the operators, and the prepared vacuum aluminized paper is not easy to degrade. With the improvement of national environmental protection regu...

AI Technical Summary

Problems solved by technology

[0003] Moreover, the existing water-based transfer coatings have poor high temperature resistance: the cigarette package material needs to be heat-sealed when it is boxed, which has relatively high requirements on the temperature resistance of the coating, generally above 140°C

At present, most of the finished products on the market have a temperature resistance level of 100°C to 120°C, so the low temperature resistance level of water-based transfer coatings is a major bottleneck restricting its application; poor anti-adhesion: under high temperature and high humidity conditions, the coating on the surface of the paper It is very easy to absorb moisture and swell to cause adhesion; poor water resistance: due to the poor water resistance of water-based transfer coatings compared with solvent-based coatings, it is easier to absorb moisture

After the water-based transfer coating is compounded, the product is placed at room temperature for half a month, and the surface of the coating turns white. This is caused by the coating’s moisture absorption, swelling and whitening; cloudy, rainy and high-humidity weather is more likely to absorb moisture and turn white, and the coating will turn white when left for 1 hour ; Poor leveling: Compared with solvent-based coatings, due to the different film-forming mechanism of water-based coatings, the leveling property is poor, and the coating surface is prone to orange peel, rainbow stripes, etc., which seriously affects the appearance of the coating.