Gravure printing ink for poly(ethylene terephthalate) (PET) base material and preparation method for gravure printing ink

Abstract

The invention discloses gravure printing ink for a poly(ethylene terephthalate) (PET) base material and a preparation method for the gravure printing ink, and aims to provide ink having the advantages of good fluidity, high adhesion, high gloss, simple and feasible preparation method, safe use and environment friendliness, and a preparation method thereof. The ink comprises the following components: an organic pigment or an inorganic pigment, resin, an adhesion promoter, a dispersing agent and the balance of organic mixed solvent. The ink is prepared by the following steps of: mixing dimethyl carbonate, ethyl acetate and n-propyl alcohol to obtain a mixed solvent, and dissolving the resin; and mixing with the organic pigment or the inorganic pigment, stirring and dispersing to obtain a semi-finished product of color paste, fully grinding on a sand mill, adding the adhesion promoter and the dispersing agent, fully stirring, and filtering off components of which the fineness is more than 15mu m by using a filtering machine to obtain the gravure printing ink for the PET base material.

Description

technical field

[0001] The invention relates to an ink and a preparation method thereof, in particular to a concave ink used for PET substrates

[0002] Plate printing ink and its preparation method. Background technique

[0003] At present, people's pursuit of commodity outer packaging is not limited to its aesthetics, but more and more attention is paid to the safety performance and environmental protection performance of its packaging. At this stage, the outer packaging of commodities mostly uses PET film composite printing; the ink solvents used are mostly toxic benzene solvents such as benzene, toluene, xylene, etc., and the ink solvents using this solvent have a large amount of residual solvents, especially benzene The content exceeds the standard. Long-term exposure to this toxic solvent will cause great damage to the human body, especially the nervous system. my country stipulates in the light industry standard QB / T2929-2008 that the sum of benzene, toluene and xy...