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screw for pet

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Topic: screw for pet

shahriar
Member

Posts: 3
From:Berlin/Berlin/Germany
Registered: Oct 2002

posted February 09, 2003 11:57 PM

Dear friends

would you please guide me to design a screw
for PET injection molding?

lf%?,lc%?,lm%?,compr.ratio?,hf?,hm?

looking forward to your kind response.

Best Regards

Shahriar Sami

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TomBlack
Moderator

Posts: 8
From:
Registered: Jul 2002

posted March 08, 2003 08:16 AM

I've always found that PET likes a fairly aggressive compression (3.0 to 3.75:1) in order to drive energy into the compound to achieve their moderately high melt temperature. Along w/ this I've often incorporated transition lengths between 4 and 5 turns...

tom black
pps, inc.

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