Posts: 7
From:brazil, IN, USA
Registered: Oct 2006

posted June 27, 2007 10:18 PM            

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We are working on a project that requires the use of commingled regrind. I will be used as an agricultural fence post. Does anyone have any ideas on where we should start with items such as: additives (gypsum, talc, wood, etc.), and we are hoping to use a mix of PE, PVC, and up to 10% of mixed anything. Would it be possible with a nonvented extruder? The profile will be a thick hollow tube.

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Posts: 881
From:Brodheadsville, PA USA
Registered: Jun 2001

posted June 28, 2007 11:49 AM            

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I'm not aware of and projects using PVC mixed with polyolefins sucessfully.

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Best Regards,

Tom Cunningham

www.ExtrusionTechnicalServices.com

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Posts: 126
From:Amesbury, Mass
Registered: Nov 2002

posted August 03, 2007 09:23 PM            

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I suspect the only way to do that is to heat the plastics until they are soft, but without melting. A very short (specially-designed) extruder could do the trick - something with maybe 8:1 L/D (just a wild guess) and a fairly deep screw. More like a heated auger than an extruder.

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