Lack of sheer forces in these areas and relative heat drop in problematic areas – the screw, no-return, nozzle, filter, mold injection points, inserts, and mold hot runners.
Sometimes, the resin moves in the opposite direction due to the design of the screw and type of operation. Resin and pigment accumulate, burn and later on contaminate, usually by surprise.
Performing the cleaning procedure, using a RAMCLEAN® product, according to the Injection Cleaning Procedure. We recommend Feeding another half a dose of cleaning product (half the cylinder’s volume) and removing it in partial injections (through the mold) and quick shots.