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    • 8. 发明授权
    • Hot melt flexographic inks and method of preparing same
    • 热熔柔性油墨及其制备方法
    • US06841590B2
    • 2005-01-11
    • US10034004
    • 2001-12-28
    • Jitendra ModiEdward StoneAna Marie FloresRobert CatenaRobert Auerbach
    • Jitendra ModiEdward StoneAna Marie FloresRobert CatenaRobert Auerbach
    • C09D11/00C09D11/10C08L31/04C08L33/02C08L91/06
    • C09D11/34
    • Solid, solvent-free inks are provided for use in hot melt flexographic printing. The ink is composed of a pigment; a thermoplastic binder which is an ethylene copolymer, a hydrocarbon resin, or a combination thereof; a wax which is a highly branched hydrocarbon wax, a polyethylene homopolymer wax, an oxidized polyethylene wax, an animal wax, a vegetable wax or combinations thereof; a solid linear alcohol; and, a dispersing agent. The ink may also contain a solid plasticizer. The solid ink has a melting point of about 75° C. or greater, and when heated to a temperature between about 90° C. and about 135° C., a molten ink is formed which has a viscosity between about 100 cps and about 1200 cps. The solid inks are used in melt flexographic printing by heating the ink to a temperature greater than about 90° C. to form a molten ink which has a viscosity between about 100 cps and about 1200 cps; applying the molten ink to the surface of a heated anilox roller in operational contact with a heated flexographic printing plate; and printing the applied molten ink from the printing plate onto a substrate such as conventional print stock, polymeric films, metal sheets, etc.
    • 提供固体,无溶剂的油墨用于热熔胶版印刷。 油墨由颜料组成; 乙烯共聚物,烃树脂或其组合的热塑性粘合剂; 蜡,高支化烃蜡,聚乙烯均聚物蜡,氧化聚乙烯蜡,动物蜡,植物蜡或其组合; 固体线性醇; 和分散剂。 油墨也可以含有固体增塑剂。 固体油墨具有约75℃或更高的熔点,并且当加热到约90℃至约135℃的温度时,形成熔融油墨,其粘度在约100cps和约 1200 cps。 固体油墨通过将油墨加热至大于约90℃的温度而用于熔融柔性版印刷,以形成粘度在约100cps至约1200cps之间的熔融油墨; 将熔融油墨施加到加热的网纹辊的表面上,与加热的柔版印刷版操作接触; 并将所施加的熔融油墨从印刷版印刷到诸如常规印刷原料,聚合物膜,金属片等的基材上。