Laser corrosion-resistant water-based paint for plate making

Abstract

The invention discloses a laser corrosion-resistant water-based paint for plate making. The laser corrosion-resistant water-based paint comprises the following components in percentage by weight: 10 to 60 percent of hydrophilic coating material, 0.1 to 10 percent of nano-scale or micron-scale inorganic oxide particles and the balance of solvent. The hydrophilic coating material comprises the following components in percentage by weight: 10%-30% of water-soluble epoxy resin, 20%-30% of water-based acrylic resin, 1%-3% of other auxiliaries, 10%-30% of polyurethane emulsion, 2%-10% of water-soluble cellulose, 0.1%-10% of aromatic amine, 15%-30% of deionized water and the balance of a PH regulator. According to the invention, three different types of components including the water-based acrylic resin, the polyurethane emulsion and the water-soluble cellulose generate a synergistic effect, so that the coating has a better hot stamping effect, hot stamping speed and mold pressing brightness.

Description

technical field [0001] The invention relates to the technical field of transfer coatings, in particular to a laser corrosion-resistant water-based coating for plate making. Background technique [0002] Laser paper is widely used in various high-end packaging due to its colorful color effects, noble and beautiful metal texture, stable and reliable anti-counterfeiting, and degradable and recyclable environmental protection performance. Generally, there are two main production processes of laser paper: direct method and transfer method. The direct method has high requirements on raw materials and equipment, and it is difficult to realize high quantitative paper; the transfer method uses film as the medium to transfer laser information to paper. Wen laser effect design diversification advantage. [0003] PET laser aluminized film has always occupied a place in the packaging field due to its unique functionality, strong metallic appearance and dazzling laser effect, and its ta...

AI Technical Summary

Problems solved by technology

[0005] At present, the coatings used in the transfer method are mainly solvent-based systems, which are coated on the base film by roller coating, and are dried and cured at high temperature to form a film. There are many problems in the use process: poor environmental performance and poor safety.

[0006] In the above patents, a lot of research and improvement have been done on the component selection and formula composition of water-based transfer laser coatings, but no in-depth research has been done on the molecular structure and characteristic application of the main resin. In application, there are problems such as poor leveling, insufficient corrosion resistance, mold sticking or pasting, and low laser brightness. Therefore, water-based transfer laser coatings have not yet been applied in batches.