Using PRECAUTIONS For Dye-Fixing Agent in the Process of Water Slurry Printing
1. Water Slurry Preparation the key for preparing water slurry is adhesive agent.When we prepare dark color slurry, we should choose high solid good adhesive agent, and matching with hand-feeling modulating agent to increase the fastness, which will ensure the color fastness(colorfastness,soaping fastness, rubbing fastness). The diameter of good adhesive agent particle should be 0.2um-1.0um, with even granular size. With dry weather and low humidity in summer, the water slurry is easy to block. In order to decrease the water slurry drying speed,and prevent the premature drying,we can add some hygroscopic agent into the water slurry. And keep the wetting of water slurry surface. We usually add 3% hygroscopic agent. If excess, the hygroscopic will influence the fastness. In the printing operation process, we often meet the following situation: at the beginning of printing, water slurry’s fluidity is very good, but after a period of time, water slurry become thick, especially in the sl...