Printing dyeing causes and solutions

To solve this problem, one is to reduce or eliminate the use of ester solvents; the second is to avoid the use of dyes and chromogens; the third is to select inks with high PH values; the fourth is to use inks with high softening point; and the fifth is to select acids and amines. The high value of the polyamide resin; six is ​​the choice of non-amide or fatty acid resin; seven is the choice of polyamide resin containing less acid (usually its higher solubility - 10.4 ~ 10.5); eight is added in its ink Nitro ink to increase its softening point. To solve the polyamide ink migration, dyeing and other defects.