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Draw Down Ratio

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Topic: Draw Down Ratio

alanv
Senior Member

Posts: 16
From:UK
Registered: Apr 2005

posted June 18, 2006 11:32 AM

Hi Folks,

I currently extrude PE on a single screw extruder and use a Draw Down Ratio of 2 for tube covers and 3.39 for tube liners.ID's range approx 6.3mm to 25.4mm and avg wall thickness is 2mm. In the near future I want to extrude Polypropylene and wondred if anyone could advise DDR for PP?
Also, any idea if there is much difference between PE screw and PP screw?/

Regards

Alan V

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