Research on the Relationships between Plastic Viscosity of Picking Liquids and its Tack Value

Abstract

In order to find out the relation between viscosity and adhesiveness (tack value), different rate printing varnish was respectively added to a lemon yellow ink for manufacturing several ink samples, and then their viscosity were tested. In addition, plastic viscosities of the 13 picking liquids were measured, and their tack values under 9 separation velocities were also tested. The study result showed that the picking liquid having high viscosity may be have low tack value, but printing varnish can decrease simultaneously plastic viscosity and tack value of one picking liquid.