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  Screw and die design

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Author Topic:   Screw and die design
yori
Senior Member

Posts: 5
From:Mishmar Ha'Emek 19236 Israel
Registered: Aug 2002

posted September 23, 2004 04:08 AM     Click Here to See the Profile for yori   Click Here to Email yori     Edit/Delete Message   Reply w/Quote
I amd looking for a new design for a single screw and a monolayer blown film die (could be handled seoaratly). The material is highMW. low MW distribution HDPE copolymer (density about 0.945g/cc; MFI ~1g/10min with 5kg weight or 0.35 with 2.16)
Whocan design a custom die or screw for such materials?
Yori

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Yori
yoramc@tama.co.il

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Tom C
Moderator

Posts: 378
From:Brodheadsville, PA USA
Registered: Jun 2001

posted September 23, 2004 02:01 PM     Click Here to See the Profile for Tom C   Click Here to Email Tom C     Edit/Delete Message   Reply w/Quote
Yori,

I replied to you die need in your other post. I'm the screw guy in the group. John and I can provide you with a highly engineered solution for your need.

Tom Cunningham
Extrusion Technical Services
USA 570-992-0961

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TomBlack
Moderator

Posts: 54
From:
Registered: Jul 2002

posted September 30, 2004 06:04 PM     Click Here to See the Profile for TomBlack   Click Here to Email TomBlack     Edit/Delete Message   Reply w/Quote
Good News! Tom C doesn't have to go it alone. There are plenty of "screw guys" around here to help out.

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Thomas Black
PPS, Inc.

www.ppsincorp.com

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Bob Cunningham
Senior Member

Posts: 92
From:Amesbury, Mass
Registered: Nov 2002

posted September 30, 2004 07:27 PM     Click Here to See the Profile for Bob Cunningham   Click Here to Email Bob Cunningham     Edit/Delete Message   Reply w/Quote
Be sure to tell us if you have a grooved-feed extruder- and if you do, who is the manufacturer? (Different manufacturers use different groove designs that behave differently).

HDPE die and screw designs are proven- there is a lot of HDPE blown film extrusion, so there is no need for guesswork. 0.945 does sound a bit lower than most HMW-HDPE, are you sure this is not a MMWHDPE?

-Bob Cunningham

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