Posts: 9
From:brazil, IN, USA
Registered: Oct 2006

posted February 01, 2008 12:29 AM            

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Does anyone have suggestions for draw-down ratios for small dia (.125-1") fpvc and ldpe tubing?

Thanks for any help.

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Posts: 903
From:Brodheadsville, PA USA
Registered: Jun 2001

posted February 01, 2008 10:21 AM            

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I believe each polymer has an ideal draw down range dependent on melt strength, swell and resistance to elongation. The supplier may be the best source of information.

Some information here;
http://www.spe-ggs.org/spe/html/tech_topics/extrusion/draw_down_ratio.html
http://www.plasticextrusiondata.com/PDF_files/28103_14.pdf

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Best Regards,

Tom Cunningham

www.ExtrusionTechnicalServices.com

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