Anti-bending waterborne transfer coating and preparation method thereof

Abstract

The invention provides an anti-bending waterborne transfer coating and a preparation method thereof. The coating is prepared from the following components in parts by weight: 15-30 parts of waterbornepolyurethane emulsion, 0.5-1 part of a cross-linking agent, 69-84 parts of deionized water and 0.5-1 part of an aid, wherein the waterborne polyurethane emulsion is synthesized from IPDI and polycarbonate polyol. The problem of irresistance to bending commonly existing in the existing transfer coating is effectively solved, bending performance of transfer paper during printing and cigarette wrapping is improved, and paper or printing bursting can be avoided. The waterborne transfer coating is environmentally friendly due to adoption of a waterborne resin system and the absence of any volatileorganic solvents.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to an anti-bending water-based transfer coating and a preparation method thereof. Background technique [0002] Transfer coatings are widely used in the field of tobacco packaging. They are used to transfer the aluminized layer to achieve the metallic silver effect of the outer packaging, and to undertake the printing layer to display fine printing patterns to achieve anti-counterfeiting functions. At present, the transfer coatings are mainly solvent-based coatings. , contains a large amount of volatile organic compounds (VOCs). At the same time, after the coating is transferred to the paper, the paper needs to go through multiple processes in the subsequent printing and smoking process, and there are multiple bending situations. Usually, in this case, The printing surface of the packaging cardboard will break the ink and cause the leakage of the bottom paper, which will affect the...

AI Technical Summary

Problems solved by technology

[0002] Transfer coatings are widely used in the field of tobacco packaging. They are used to transfer the aluminized layer to achieve the metallic silver effect of the outer packaging, and to undertake the printing layer to display fine printing patterns to achieve anti-counterfeiting functions. At present, the transfer coatings are mainly solvent-based coatings. , contains a large amount of volatile organic compounds (VOCs). At the same time, after the coating is transferred to the paper, the paper needs to go through multiple processes in the subsequent printing and smoking process, and there are multiple bending situations. Usually, in this case, The printing surface of the packaging cardboard will break the ink and cause the leakage of the bottom paper, which will affect the appearance of the product packaging

Therefore, there is an urgent need to provide a transfer coating, which can solve the problem of poor folding resistance of the existing transfer coating on the one hand, and solve the pollution problem caused by the volatilization of the solvent of the existing solvent-based coating on the other hand, which can completely contain no volatile organic compounds.

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