Processes to create foams

There are four processes to creat foams:

• Mechanical foaming

–Mix air into the resin while in a liquid state

–Plastisols, vinyl esters, urea formaldehydes, phenolics, polyesters

• Chemical foamingEPS Foams recycling process | Foam Compactor

–Foaming agents or blowing agents

–Chemical reaction that forms a gas/vapor

• Physical foaming

–Gas is forced into a liquid or molten resin

–Pressure is released quickly

–Foam is created

• Syntactic foams

–Physically mix in hollow beads

–Beads are usually glass or plastic

–Wide density capability

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