Currently the soften goes to the metering component, where the screw height remains consistent.<br><br>The length-to-diameter ratio, pitch, length of each zone and helix angles of a screw must all be matched to the plastic <br>type being used. The screw must also be designed to suit a specific type of die.<br><br><br>Also visit my homepage :: <a href="http://cathy6johnson95.postbit.com/now-introducing-newest-glass-vials-and-glucose-pellets.html">plastic extruder</a>