特种染料在防伪纸中的应用试验

Application of the special dye on forgery prevention paper

采用在湿部添加特种染料的方法制备了一种新型的防伪纸。研究结果表明,在湿部添加试验的一系列的特种染料中,复配组合SBB和SB26在质量比例为5/5,总用量为0．008%(对绝干浆)时可达到较好的防伪效果。制备的防伪纸遇到醇类、酮类、苯类、卤烷、酯类等有机溶剂时,均能显示出清晰的蓝色环状斑点,且纸页色度没有明显变化。湿部其它助剂的最佳用量为AKD0．15%,阳离子淀粉2．0%,CPAM0．01%。

A new forgery prevention paper was produced by adding special dye in the wet-end. The findings show that： the forgery prevention paper had a good forgery prevention effect when the ratio of SBB to SB26 is 5 ： 5 and the dosage of special dyestuff is 0.008%（to oven dry stock）, The forgery prevention paper showed clear blue spots when it was erased with athanol, ketone, benzene, alkyl halide and ester etc, and the paper＇s chroma didn＇t change remarkably, The best charge of other wet-end agent is： AKD 0.15%, cationic starch 2.0%, CPAM 0.01%,