A Comparison of the Physical Properties of Froth vs. Pour Foams
Today the urethane panel producer is faced with the angst of changing yet again to an alternative foam blowing agent. Since HFCF-22 has been phased out, may panel manufacturers are faced with the difficult decision of either staying with a froth type blowing agent [HFC-134a], or transitioning to a liquid [or near liquid] alternative such as pentane, water, HFC-245fa, or ecomate®.
This paper will try to facilitate that decision by examing the pertinent factors affecting foam flow, compressive strength, as well as other physical properties. Effects of mold temperature, orientation, packaging & speed of reaction will be examined.
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