Extrusion composite ink of polyurethane system as well as preparation method and application of extrusion composite ink

By adopting extruded composite ink with polyurethane system, the problems of high non-methane total hydrocarbon content, poor freezing resistance and insufficient adhesiveness of the existing inks are solved, and the ink is low in methane total hydrocarbon and good freezing resistance is achieved. It is suitable for printing of BOPP and PET films, and can be well bonded to PP or PE materials.

CN119708909APending Publication Date: 2025-03-28WANHUA CHEM BEIJING
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Patent Information

Application Number
CN202311243243.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-09-26
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

The existing extruded composite inks have problems such as high non-methane total hydrocarbon content, poor freezing resistance, inability to adapt to the printing of BOPP and PET films, and insufficient adhesion to PP or PE materials.

Method used

Extruded composite inks using polyurethane system include polyurethane resin, chlorinated polypropylene resin, modified terpene resin, aldehyde ketone resin, pigment, filler, additive and mixed solvent. Through specific ratios and processes, a toluene-free and freeze-resistant ink is formed. It is suitable for printing of BOPP and PET films and can be well bonded to PP or PE materials.

Benefits of technology

The amount of non-methane total hydrocarbon is reduced, the frozen resistance and adhesion of the ink is improved, and it is suitable for medium and high-speed printing, and it also shows a strength enhancement effect in the extrusion composite of PP or PE materials.

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Abstract

The invention discloses extruded composite ink of a polyurethane system as well as a preparation method and application of the extruded composite ink. The extruded composite ink is prepared from the following components: polyurethane resin, chlorinated polypropylene resin, modified terpene resin, aldehyde ketone resin, pigment, optional filler, optional auxiliaries and a mixed solvent. The extrusion composite ink provided by the invention changes the original chlorinated polypropylene-chlorinated EVA / EVA system, and the peel strength of a printed base material after extrusion compounding of an extruded material and a non-woven fabric or a woven fabric in any proportion of PP and PE is greater than or equal to 1.0 N / 15mm; the problems that a product in the prior art is high in chlorine content, high in non-methane hydrocarbon emission, narrow in printing base material adaptability (only BOPP can be printed) and prone to caking at the low temperature (minus 5 DEG C) are solved.
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