Water-based ink printing process for plastic bag

Abstract

The invention relates to a water-based ink printing process for a plastic bag. The water-based ink printing process for the plastic bag comprises the steps of plate making, ink mixing, printing plateinstallation, ink scraping knife loading, location, printing plate inking, debugging, printing and drying, wherein a hot-air system is comprised in the step of drying, and comprises a placement device, a drying device and a treatment device; the drying device comprises a portal frame, a drying box, a plurality of air blowing holes and a first fan; each air blowing hole communicates with an inner cavity of the drying box, and a plurality of electric heating wires are installed in the drying box; the treatment device comprises a negative-pressure box, an inlet and a filter plate; a second fan communicates to one side of the negative-pressure box, a waste gas treatment mechanism is installed at one side of the second fan, and the waste gas treatment mechanism comprises a treatment box, an exhaust pipe and a plurality of activated carbon frames sequentially arranged in the treatment box in the length direction of the treatment box; and activated carbon is filled into the activated carbon frames. According to the water-based ink printing process for the plastic bag, volatilization of alcohols, ethers and other substrates into a workshop can be reduced, so that pollution to air in the workshop can be reduced.

Description

technical field [0001] The invention relates to the technical field of printing, in particular to a water-based ink printing process for plastic bags. Background technique [0002] With the rapid development of society and technology, plastic bags have played an irreplaceable role in people's lives. [0003] The prior art can refer to the Chinese invention patent application document with the publication number CN108099387A, which discloses a water-soluble ink printing process for woven bags, including the following steps: plate making, ink adjustment, printing plate installation, scraping knife, positioning, Printing plate inking, debugging, printing, drying, pulling and receiving. The beneficial effects of the present invention are: the present invention adopts gravure printing, the printing speed is fast, the printing volume is large, the printing color is rich, the quality is exquisite, the selected ink is water-soluble and water-resistant woven bag ink, the ink is non-...

AI Technical Summary

Problems solved by technology

[0004] Compared with solvent-based inks, water-based inks have a further improvement in environmental performance. Not only does it not contain aromatic hydrocarbon solvents, but also greatly reduces VOC, but it still cannot achieve zero content, and still contains a small amount of alcohol and ether. The environmental impact is small, but it will pollute the air in the workshop

[0005] The above-mentioned existing technical solutions have the following defects: when the above-mentioned printed woven bag is dried, substances such as alcohol and ether will volatilize, thereby polluting the air in the workshop

Images