Thermal transfer ribbon for near-edge printing and preparation method thereof

Abstract

The invention discloses a thermal transfer ribbon used for proximal margin printing and a production method thereof. The thermal transfer ribbon comprises a releasing layer, an adhesive coating and a matrix layer; the releasing layer comprises an aqueous wax emulsion, an auxiliary agent and deionized water, the adhesive coating comprises an aqueous resin emulsion, the aqueous wax emulsion, inorganic pigment, an auxiliary agent and deionized water; the emulsions used in the releasing layer and the adhesive coating are aqueous emulsions, an organic solvent is not added; viscosity of the releasing layer and the adhesive coating are different, and cannot be mutually penetrated while transfer printing. The thermal transfer ribbon can realize rapid printing for a proximal margin printer, the printed characters and images are clear, and the wear resistant and scratch resistant effects are good.

Description

technical field [0001] The invention relates to the field of thermal transfer printing, in particular to a water-based thermal transfer ribbon for near-edge printing. Background technique [0002] Thermal transfer printers are divided into flat-press printers and side-press printers. Compared with flat-press printing, the side-press printing speed is fast and saves ribbons. The printing speed of the side-press printers can reach 600mm / s, while the flat-press printers The speed can only reach 300mm / s. Because the printing speed is relatively doubled, edge-press printers are widely used in various large-scale manufacturing factories. [0003] Printing ribbons for edge-press printers and flat-press printers are not universal. At present, most of the ribbons used for edge-press printers are solvent systems. Solvent systems use a large amount of toluene, xylene, and methyl ethyl ketone during use. , methyl isobutyl ketone and ethers and other organic solvents, during the coatin...

AI Technical Summary

Problems solved by technology

[0004] At present, although the ribbons used for edge-pressure printers also use water-based systems, most of the ribbons are not fully transferred after printing, and the imprint is not clear. The effect is poor under the fast printing of variable pressure printers. The reason for this is mainly at present. Most of the variable pressure ribbons used are single-layer coated, and single-layer coating is difficult to meet the requirements of low release temperature and high imprint pattern strength after printing; a few use double-layer coated ribbons, but there is no controlled release layer and The viscosity of the adhesive layer is different, because the viscosity difference between the release layer and the adhesive layer is too small, the release layer and the ink layer are mixed together during the heating process, the pattern transfer is incomplete, and the imprinting effect is poor