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[List Manager <listman@wmrc.hazard.uiuc.edu>]

From: "Richard Yoder, P.E." <nbdc-nics@navix.net>
To: P2Tech <p2tech@great-lakes.net>
Subject: urethane foam & mehylene chloride

P2-techers:

I know many of you are familiar with two component urethane foam applied 
through a mixing head gun with a metal tip.  Typical applications include 
refrigerated boxes, which employ the insulating foam to fill wall 
cavities, and in this case to provide adhesion in a sandwich 
construction.  Clean-up of the tip and gun mixing chamber typically 
utilizes methylene chloride as the solvent.

Questions: 

1.  Since the gun we're looking at now has a commonly used pipe thread 
which connects the tip, I suspect that there are several vendors for the 
disposable tips other than the gun manufacturer.  Any idea of where a 
list might be?

2.  I recall seeing guns utilizing "mixing" tips which combine two 
components in the tip, eliminating the clean up problem associated with 
the mixing head.  Again, have you seen this type of tip in 2-part 
urethane foam applications?  Sources/vendors?

3.  Is anyone aware of an alternative material that could be utilized as 
a foam?  Insulating value, density and adhesion are issues. 

Thanks for your help.

ry

-- 


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Richard Yoder, PE			Nebraska Industrial 
NICS-NBDC				Competetivenss Service
1101 Cornhusker Hwy.    Ste. 302	800-MEP-4MFG 
Lincoln, Nebraska    68521		
					Nebraska Business
phone 402/472-1183			Development Center
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email ryoder@unomaha.edu
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