How to color leather products
Dry thick staining method This method is basically the same as the extrusion dyeing method, the difference is that the proportion of dye in plastic than usual to be more than 10 times higher than the injection molding can be added to the primary color plastic to dilute the use of
Squeeze dyeing method The method is to first dye and plastic by dry dyeing method for mixing, and then extruded with a special extruder into a thin, cut into granular. The method of color mixing is good, help to disperse the poor pigment.
Dry dyeing method to a certain percentage of dye and plastic pellets into the rotating drum, and add 0.01% to 0.1% of zinc stearate or white mineral oil as a wetting agent to make the plastic easy and dye bonding, rotating the drum to plastic Fully mixed with the dye.
In the production of masterbatch, the use of resin and the same color resin as the carrier, adding high concentrations of pigments (dyes), under the action of additives, by heating, plasticizing, mixing, extrusion granulation, Made specifically suitable for the resin of the coloring agent, known as special color masterbatch.
