Mixer for a plasticizing screw

摘要

The invention provides an improved mixer section for a screw for a molding machine. The improved mixer section includes at least one conveying flight and at least one spill flight intersecting with the conveying flight. At least one notch is formed in the conveying flight to enable mixing between adjacent flow channels. The spill flight terminates near the output of the mixer to create a trap zone for any unmelts that reach that area of the mixer.