The thermoset screws only has one zone. This screw also has no narrowing core diameter and therefore no compression zone.
This screw doesn’t need a extra tip because the screw itself is ends in a tip. With a thermoset screw you can injection mold very thin-walled products. However, the processing is not without problems. The material is particularly sensitive to premature coagulation, which stops the flow prematurely. Temperature control is therefore very important.
Thermoset screws are available in various wear resistance gradations.