The reason for the poor gloss: the low temperature outside the nozzle, long molding cycle, more titanium dioxide in the masterbatch, and poor pigment dispersion in the masterbatch;
Solution: Increase the nozzle temperature and shorten the molding cycle. Reduce the titanium dioxide in the masterbatch particles and improve the pigment dispersion in the masterbatch particles.
Reasons for uneven color: high temperature of material cylinder, long molding cycle and poor resin compatibility;
Solution: Reduce the temperature of the feed tank and use a carrier with good compatibility.