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extruding TPP ???

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Topic: extruding TPP ???

shawn8791
Member

Posts: 3
From:brazil, IN, USA
Registered: Oct 2006

posted November 16, 2006 09:45 AM

Does anyone know of what extrusion equipment is used to extrude TPP flakes. The material is used as an additive to many plastic compounds, but I havn't found anyone using it alone. Helpful information would be meltflow, extruder L/D, compression ratio for screw, etc. We are wanting to extrude this material into a trapeziod shape, is this achievable? We are also wanting to produce 100 lbs./hr. Hoping to do so on a 2.5" extruder.

Thanks for any help.

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Tom C
Moderator

Posts: 790
From:Brodheadsville, PA USA
Registered: Jun 2001

posted November 16, 2006 12:27 PM

TPP melts readily at 120F. You don't need an extruder, just a melting pot and a gear pump.

The viscosity is probably too low for a single screw to pump effectivly.

The melt viscosity is very low, like motor oil. I will not hold a shape coming out of a forming die.

How about a tall vertical mold? Pump the TPP into the top, let it cool, and break apart the mold. Don't expect the final part to have a lot of strength.

------------------
Best Regards,

Tom Cunningham

www.ExtrusionTechnicalServices.com

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