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Author
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Topic: Die design for HMW HDPE
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yori
Senior Member Posts: 5
From:Mishmar Ha'Emek 19236 Israel
Registered: Aug 2002
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posted September 23, 2004 03:53 AM
   
I am looking for principals of die design for HMW HDPE for blown film (monolayer), and or people/firms who can design a specific die based on rheological properties.Thanks for any help Yori ------------------
Yori IP: Logged |
Tom C
Moderator Posts: 375
From:Brodheadsville, PA USA
Registered: Jun 2001
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posted September 23, 2004 01:35 PM
 The above images of a flat spiral die and a spiral mandrel die were provided by John Perdikoulias of Compuplast Canada. In my estimation John is the premier designer of these types of dies. Compuplast also sells simulation software to design these dies and can teach anyone to do it. In another post I mentioned an upcoming Compuplast seminar that will discuss these dies along with other extrusion related topics. Contact information: Full Name: John Perdikoulias
Job Title: President
Company: Compuplast Business Address: 5333 Forest Hill Dr.
Missiauga, ON L5M5B7
Canada Business: (905) 814-8923
Business Fax: (905) 814-8924 E-mail: jp@compuplast.ca
Web Page: http://www.compuplast.ca
If you need additional information please feel free to contact me;
Tom Cunningham
Extrusion Technical Services
USA 570-992-0961
[This message has been edited by Tom C (edited September 23, 2004).] IP: Logged |
felix
Senior Member Posts: 44
From:
Registered: Jul 2001
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posted September 23, 2004 04:15 PM
Die design for HMWHDPE has channels that are typically deeper and wider than traditional PE dies. This is done because of the higher viscosity of the resin. To provide the correct and even distribution of material the die's land lengths of the spirals of the die are wider also. Some of the other differences involve minimizing the residence time of material flowing through the die through die design and streamlining.
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