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Air Traps in Closed Cell Foam

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Topic: Air Traps in Closed Cell Foam

equate0404
Senior Member

Posts: 5
From:
Registered: Aug 2006

posted May 09, 2007 10:23 AM

Hello. I am the process engineer at a place that produces closed cell foam. We are currently having some problems with air traps in our cured product ranging in size from pennies to silver dollars and larger. The air traps mainly occur in our SBR-EPDM blend stocks. Interestingly, the problem just started occuring after several months of virtually no issues. Granted, the weather has started getting warmer, but last May was a good month.

Can anyone offer any help?

Thanks.

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Tom C
Moderator

Posts: 841
From:Brodheadsville, PA USA
Registered: Jun 2001

posted May 09, 2007 10:24 PM

Seems we heard from you about this last summer.

It would seem that moisture or a warmer material being fed to the extuder is influencing your process.

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

Tom Cunningham

www.ExtrusionTechnicalServices.com

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