A water-based ink printing process for plastic bags

Abstract

The invention relates to a water-based ink printing process for plastic bags, which includes plate making, ink adjustment, printing plate installation, ink scraping knife, positioning, printing plate inking, debugging, printing and drying. The drying step includes a hot air system, hot air The system includes a placement device, a drying device and a processing device; the drying device includes a gantry frame, a drying box, a plurality of blowing holes and a first fan; each blowing hole communicates with the inner cavity of the drying box, and multiple The heating wire; the treatment device includes a negative pressure box, an inlet and a filter plate; one side of the negative pressure box is connected to a second fan, and one side of the second fan is installed with a waste gas treatment mechanism, which includes a treatment box, an exhaust pipe and A plurality of activated carbon frames are sequentially arranged in the processing box along the length direction of the processing box; the activated carbon frames are filled with activated carbon. The invention can reduce the volatilization of substances such as alcohol and ether into the workshop, thereby reducing the pollution to the air of the workshop.

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

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