Alcohol type gravure surface printing ink and preparation method thereof

Abstract

The invention relates to gravure surface printing ink and in particular relates to alcohol type gravure surface printing ink and a preparation method thereof, belonging to the field of printing ink. In order to overcome the technical defects that the odor is pungent, and solvent residue is high in the polyamide resin printing ink and other types of resins are low in fastness in the prior art, the invention provides alcohol type gravure surface printing ink and the connecting material thereof. The connecting material of the alcohol type gravure surface printing ink comprises 20-30 parts of polyvinyl butyral resin, 2-6 parts of aldehyde resin, 47-60 parts of anhydrous alcohol and 10-18 parts of acetic ether. The printing ink prepared by utilizing the vehicle is excellent in initial dryness performance and tinting strength, has the friction coefficient of 0.6-0.7, is suitable for the requirements on automatic packaging and has a high industrial popularization value.

Description

technical field [0001] The invention relates to a gravure surface ink, in particular to an alcohol-type gravure surface ink and a preparation method thereof, belonging to the field of printing inks. Background technique [0002] At present, there are two main types of surface printing inks used in the domestic market: one is mainly based on polyamide resin, which is suitable for PE and PP plastic films, and the other is based on nitrocellulose resin. CPP and paper, both of these two inks have the following disadvantages: using toluene, isopropanol, and ethyl ester as solvents, harmful gases are emitted during the drying process, which affects the operating environment, and the printed matter has a large residual odor; the resin itself is easy to decompose and turn yellow, and is environmentally friendly. Low, not suitable for the packaging requirements of food, medicine and sanitary products; continuous printing will cause symptoms such as increased viscosity, poor gloss, dr...

AI Technical Summary

Problems solved by technology

[0002] At present, there are two main types of surface printing inks used in the domestic market: one is mainly based on polyamide resin, which is suitable for PE and PP plastic films, and the other is based on nitrocellulose resin. CPP and paper, both of these two inks have the following disadvantages: using toluene, isopropanol, and ethyl ester as solvents, harmful gases are emitted during the drying process, which affects the operating environment, and the printed matter has a large residual odor; the resin itself is easy to decompose and turn yellow, and is environmentally friendly. Low, not suitable for the packaging requirements of food, medicine and sanitary products; continuous printing will cause symptoms such as increased viscosity, poor gloss, dry surface plugging, and decreased transfer; the ink resolubility is not good, and it is difficult to wash the plate after shutdown; the application range is small , not suitable for surface printing on twisted substrates such as PT, VMPET, etc., and a large amount of harmful solvents are discharged, causing immeasurable harm to the operation and ecological environment

Compared with traditional benzene-soluble plastic gravure inks, inks prepared from these resin binders have greatly improved environmental performance, but they still cannot achieve satisfactory results in terms of substrate adhesion and friction coefficient stability.

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