Pure water gravure white ink for printing PVC decorative film and preparation method thereof

Abstract

The invention provides a pure water gravure white printing ink for printing a PVC decorative film. The pure water gravure white printing ink is prepared from, by weight, 15-25 parts of titanium dioxide, 50-70 parts of water-based PVC glue, 20-30 parts of waterborne polyurethane resin, 10-30 parts of waterborne epoxy resin, 5-25 parts of de-ionized water, 1-2 parts of antifoaming agent, 1-2 parts of dispersing agent, and 1-1.5 part of surface active agent. The preparation method includes steps of evenly mixing all raw materials; after grinding and dispersing, passing through quality inspection, filtering and packaging. The pure water gravure white printing ink of the embodiment applies the matching of the waterborne PVC glue, the waterborne polyurethane resin and the waterborne epoxy resin; the formula excludes any organic solvent; the pure water gravure white printing ink is safe and environment-friendly; besides, the wetting effect of the titanium dioxide is enhanced; meanwhile, the pure water gravure white printing ink has good wear resistance and film forming performance.

Description

technical field [0001] The invention relates to the field of ink processing, in particular to a pure water gravure white ink used for printing PVC decorative films and a preparation method thereof. Background technique [0002] PVC decorative film is a widely used surface decoration material. Firstly, it is printed on PVC, which can have various patterns and embossing patterns. On the double stick laminating machine, the completely dried PVC printed face mask and a layer of PVC transparent film are heated and pressed together. The temperature of the vat of the laminating machine is 180-200°C, and then the laminated film is firmly adsorbed on the surface of the building material through the vacuum suction process, so as to decorate and protect the building material. High-end office furniture, cabinet doors, bathroom cabinet doors, home decoration sets of doors, decorative panels and other building materials can be decorated with it to meet people's different daily needs. ...

AI Technical Summary

Problems solved by technology

[0004] However, PVC decorative films currently have the following deficiencies: PVC solvent-based inks are often used for printing PVC decorative films. Human body is healthy, so it is better to use water-based ink instead of solvent-based ink to reduce VOCs emissions and be more environmentally friendly

However, there are two problems with the use of water-based inks. One is that the drying rate of water-based inks is low and cannot be dried quickly, which invisibly prolongs the working hours, which is time-consuming and labor-intensive, and also delays the smooth progress of subsequent processes.

The second is that after printing, the peeling strength of PVC and transparent film PVC is poor. When vacuum forming, the two layers of PVC film will be separated, and the purpose of decoration and protection cannot be achieved.

Generally, when PVC is bonded, the temperature is 180-200°C, so the ink is required to maintain good performance under high temperature environment, but it is easy to peel off after using water-based ink.

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