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   Plastic processing forums for extrusion information and advice and for other feed screw applications.
  Extrusion, Single Screw
  styrene

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Author Topic:   styrene
inject
Member

Posts: 1
From:oklahoma
Registered: Nov 2004

posted November 18, 2004 09:34 AM     Click Here to See the Profile for inject   Click Here to Email inject     Edit/Delete Message   Reply w/Quote
we are curently trying to run styrene and i,m wondering should it be ran out at a rapid speed or not the part has several ribs and groves after i get it going it will run sevral hours then surge just a little any info would be great also what would the the melting points of styrene i run 300 to 350

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Tom C
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Posts: 405
From:Brodheadsville, PA USA
Registered: Jun 2001

posted November 18, 2004 04:00 PM     Click Here to See the Profile for Tom C   Click Here to Email Tom C     Edit/Delete Message   Reply w/Quote
This is a case where a data aquisition system would be usefull to track down the problem.

This could be a problem with screw temperature, if everything else stays constant. Without some sort of screw temperature control, the screw can take an hour or more to stabilize it's temperature. It might be worthwile to try screw cooling in the feed throat area to see if that helps.

Tom C www.ExtrusionTech.com

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