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  Purging Compound

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Author Topic:   Purging Compound
BedHead
Senior Member

Posts: 11
From:Hamilton
Registered: Jul 2003

posted October 08, 2003 07:58 PM     Click Here to See the Profile for BedHead     Edit/Delete Message   Reply w/Quote
I am currently running reinforced PP any ideas for purging compound??? Someone suggested kitty litter or virgin PP. Help???

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Tom C
Moderator

Posts: 701
From:Brodheadsville, PA USA
Registered: Jun 2001

posted October 08, 2003 09:46 PM     Click Here to See the Profile for Tom C   Click Here to Email Tom C     Edit/Delete Message   Reply w/Quote
I would try <1 MI PP first. It does not like to stick to metal, but will stick to other PP. This will then minimize cross contamination.

Let us know how this works. There are other options if this does not work.

Tom Cunningham
Extrusion Technical Services

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BedHead
Senior Member

Posts: 11
From:Hamilton
Registered: Jul 2003

posted October 10, 2003 07:01 PM     Click Here to See the Profile for BedHead     Edit/Delete Message   Reply w/Quote
Someone suggested polystyrene??

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Tom C
Moderator

Posts: 701
From:Brodheadsville, PA USA
Registered: Jun 2001

posted October 10, 2003 11:34 PM     Click Here to See the Profile for Tom C   Click Here to Email Tom C     Edit/Delete Message   Reply w/Quote
At least I had some logic behind my choice. I don't se any advantage for PS in purging for any reason except compatibility, which is not the case here.

Tom C

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DK
Member

Posts: 4
From:ALTAMONT,NY,USA
Registered: Oct 2003

posted October 26, 2003 08:29 PM     Click Here to See the Profile for DK   Click Here to Email DK     Edit/Delete Message   Reply w/Quote
LOOK INTO A PURGING COMPOUND CALLED BAMBERKO PURGE. IT'S AN ACRYLIC PURGING COMPOUND. WORKS GREAT. POLYSTYRENE BY ITSELF IS NOT A VERY GOOD PURGING COMPOUND.

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huaguofei
Senior Member

Posts: 11
From:shanghai, PRC
Registered: Apr 2004

posted April 30, 2004 03:12 AM     Click Here to See the Profile for huaguofei   Click Here to Email huaguofei     Edit/Delete Message   Reply w/Quote
Maybe you can try the type UP of ASACLEAN or the ECONOCLEAN purging compound.

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Rochelle Lemieux
Member

Posts: 2
From:Noblesville, IN USA
Registered: Oct 2004

posted October 23, 2004 01:40 PM     Click Here to See the Profile for Rochelle Lemieux   Click Here to Email Rochelle Lemieux     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by DK:
LOOK INTO A PURGING COMPOUND CALLED BAMBERKO PURGE. IT'S AN ACRYLIC PURGING COMPOUND. WORKS GREAT. POLYSTYRENE BY ITSELF IS NOT A VERY GOOD PURGING COMPOUND.

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Rochelle Lemieux
Member

Posts: 2
From:Noblesville, IN USA
Registered: Oct 2004

posted October 23, 2004 01:44 PM     Click Here to See the Profile for Rochelle Lemieux   Click Here to Email Rochelle Lemieux     Edit/Delete Message   Reply w/Quote
Try using Ultra Purge. It is a new ready to use purge compound imported from Itlay, widely being used in Europe. There is a specific grade for each resin. Safe to use in Hot Runners and can be purged through molds. There are no particulates or abrasives. Is certified for Food Grade Contact. See more at www.rglsales.com, Ultra Purge.

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magibrendan
Member

Posts: 3
From:Malaysia
Registered: Nov 2004

posted November 12, 2004 07:56 PM     Click Here to See the Profile for magibrendan   Click Here to Email magibrendan     Edit/Delete Message   Reply w/Quote
Anyone know of any good purging compound for for blown Co-Ex LLDPE/LDPE? We are always facing some unmelted resins and not so nice flow of materials. We tried increasing temperature very high, yet still does not solve the problem. And it takes us hours to purge previous materials out. Any suggestions anyone? Any info on purging compounds and the proper method to making it effective? THanx.

Anyone with a good start up and shut down procedure for Co-ex blown?

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Blockcopolymer
Member

Posts: 1
From:Houston,Tx, USA
Registered: Mar 2005

posted March 07, 2005 12:14 PM     Click Here to See the Profile for Blockcopolymer     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by magibrendan:
Anyone know of any good purging compound for for blown Co-Ex LLDPE/LDPE? We are always facing some unmelted resins and not so nice flow of materials. We tried increasing temperature very high, yet still does not solve the problem. And it takes us hours to purge previous materials out. Any suggestions anyone? Any info on purging compounds and the proper method to making it effective? THanx.

Anyone with a good start up and shut down procedure for Co-ex blown?

There is a very good purge compound called 0964-NT7 that used to be made by Union Carbide. I know it is still being made but am not sure who sells it?

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KonaBears
Member

Posts: 1
From:Tokyo,Japan
Registered: May 2006

posted May 17, 2006 06:12 AM     Click Here to See the Profile for KonaBears   Click Here to Email KonaBears     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Blockcopolymer:
There is a very good purge compound called 0964-NT7 that used to be made by Union Carbide. I know it is still being made but am not sure who sells it?
Please try this Purging Compound "ALLESKLAR". http://www.gsiexim.com/allesklar.html
It's popular in Japan.

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