Benzene-free alcohol-resistant PET (polyethylene terephthalate) thermoshrinkable film plastic printing ink and preparation method thereof

Abstract

The invention relates to a benzene-free alcohol-resistant PET (polyethylene terephthalate) thermoshrinkable film plastic printing ink which is prepared from 50-75 wt% of solvent, 10-20 wt% of resin, 10-35 wt% of pigment and 1-5 wt% of assistant, wherein the solvent adopts a composite solvent, and is a mixture of ethyl acetate, n-propyl acetate, n-butyl acetate and butanone; the resin is a ternary vinyl chloride-vinyl acetate resin; the pigment adopts a synthetic pigment; and the assistant comprises gas-phase silicon dioxide as an anti-settling agent and polyethylene wax as a lubricating agent. The invention provides a special benzene-free plastic printing ink for a PET thermoshrinkable film. After the ink is matched with the PET thermoshrinkable film for printing, the printing product satisfies the requirement for environmental protection, is safe and nontoxic, can be recycled, has strong alcohol resistance, and well solves the problem of skin packaging in cleaning supplies, cosmetics and other alcohol-containing products.

Description

technical field [0001] The invention belongs to the technical field of plastic printing inks, and relates to a benzene-resistant and alcohol-free PET heat-shrinkable film plastic printing ink with strong alcohol-resistant ability for printed products that use skin-fitting packaging material PET (polyester) heat-shrinkable film as the printing material and its preparation method. Background technique [0002] Polyester (PET) heat-shrinkable film is a new type of heat-shrinkable packaging material. It has the characteristics of easy recycling, non-toxic, odorless, good mechanical properties, and meets environmental protection requirements. The highest heat shrinkage rate of PET film after copolymerization modification can be As high as 70%, according to the development trend of skin packaging materials, PET (polyester), OPS (oriented polystyrene) and other environmentally friendly materials will gradually replace PVC (polyvinyl chloride) heat shrinkable film in recent years, b...

AI Technical Summary

Problems solved by technology

[0004] In terms of printing inks, there are currently ink manufacturers on the market that specialize in the production of printing inks for heat-shrinkable films. However, the inks are basically only suitable for printing on PVC heat-shrinkable films, and they are benzene-soluble inks, which are not environmentally friendly.

In addition, on the skin packaging of some cleaning products, cosmetics and other products containing alcohol components, because the resin of the general heat shrinkable film printing ink is mainly acrylic resin, its alcohol resistance is poor, and the products containing alcohol will be printed The ink on the label dissolves, thus, there is a serious defect in the packaging