English to Swedish Tech/Engineering Engineering: Industrial Industrial extruder (strängsprutningsmaskin)

The lead of the screw element is defined as the translation length for a complete turn (360 degree).
The important conveying screw element parameters are therefore the Lead, Hand and Length.
Application Notes:
Conveying screw elements with lead to diameter ratios of 0.5-0.8 are used for building up pressure prior to the die head or for increasing the fill in channels prior to mixing, and for squeezing prior to melting in case of crystalline or semi-crystalline polymers.