How foam is made: blowing agents

How is Foam Made?

When expanded polystyrene foam is produced, a blowing agent is used in the expansion process. Polystyrene foam products are primarily manufactured using two types of blowing agents: pentane and carbon dioxide.

Pentane has no effect on the upper ozone layer. Many foam manufacturing plants recapture and reuse a substantial portion of the pentane released in production processes as fuel.

Carbon dioxide is non-toxic and non-flammable and does not contribute to low-level smog or deplete the stratospheric ozone layer. Additionally, using carbon dioxide as a blowing agent does not increase carbon dioxide levels in the atmosphere.

More About Foam Safety

 more about foam microwave

Microwaves

Learn more about foam and microwaves.

Learn More

 more about foam sanitation

Sanitation

Single-use foodservice products offer sanitary advantages.

Learn More

 more about foam styrene

Styrene

Styrene is a naturally occurring substance.

Learn More