General Production Methods for Blowing Foams

Plastic foams are generally made using any of seven different blowing methods (7)  

CBAs are available which decompose at temperatures from 100°C (230°F) to as high as 280 C (537°F). A CBA is available to match any polymer melting point or processing temperature desired. 

During the polymerization reaction to form a solid polymer the isocyanate also reacts to liberate a gas which forms the cells. This is the basis of some polyur-ethane foam techniques. 

This material might be a gas adsorbed onto the surface of finely divided carbons. 

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