General environment-friendly alcohol-water type ink for printing conjunctiva and preparation method thereof

Abstract

The invention discloses a commonly used environmental-protection alcohol-water ink for printing tangle films and a preparation method thereof. The ink is composed of the following components by the mass percentage: 30%-45% of composite resin, 30%-55% of a composite solvent, 5%-20% of a colorant, and 2%-5% of an auxiliary agent. The ink does not contain benzene or ketone solvents, has the heavy metal content not exceed standards, and is safe and environmentally friendly; the adhesive force is good and can reach more than or equal to 99%; the surface of an ink layer of a printed product has good glossiness, and a layer of gloss oil is not required to be separately printed; the ink has good plasticity, and the printed product is not curly; the ink has good printability and can be commonly used in glass paper tangle films, PET transparent tangle films, PVC transparent tangle films, PET aluminized tangle films and PVC aluminized tangle films, the printing machine speed can reach more than or equal to 200 m / min, and the printed product is not anti-sticky and does not migrate; and the printed product has no peculiar smell, and is bright in colors and high in color saturation degree.

Description

technical field [0001] The invention relates to an ink, in particular to a general environment-friendly alcohol-water type ink for printing conjunctiva and a preparation method thereof. Background technique [0002] my country is a big producer and consumer of candies and snacks, and also a big exporter of candies and snacks. At present, there are mainly three kinds of twisted packaging films: PVC film, PET film and cellophane. Among them, PVC film is widely used because of its low price. However, because European countries, Japan, South Korea, Taiwan, China and other places have gradually banned PVC products, only expensive cellophane twisted film can be used for export products. PVC film is not environmentally friendly; and although cellophane itself is not toxic, its production process will have a great impact on the environment just like papermaking. PET (polyethylene terephthalate) is a non-toxic, transparent and recyclable material, which is mainly used in various be...

AI Technical Summary

Problems solved by technology

[0003] At present, the conjunctiva ink mainly has the following defects: general inks can only print PVC conjunctiva, and cannot be used on PET film and cellophane; traditional inks containing benzene and ketone solvents are used; poor adhesion; poor printing adaptability, easy Pull wire and fog plate; the gloss is poor, and a layer of varnish needs to be printed separately to achieve better gloss; the speed of the printing machine is slow, generally not exceeding 100 m / min; the printed matter is easy to curl, has peculiar smell, etc.