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Foam Polystyrene #6

United States

 

Foam Polystyrene Production Process

 

Polystyrene (PS) is a multi-faceted plastic used in many common items. The resin identification code for this plastic is "6." PS (solid or foamed) starts as a liquid monomer and is made into a stable, solid polymer pellet. To turn the pellets into PS foam, they are impregnated with a blowing agent, such as pentane or carbon dioxide. This transforms them into “pre-puff” beads. The beads are then heated and puffed up like popcorn. These beads are made into cups, plates, and containers through thermoforming or steam-chest molding.

 

 

Recovery & Recycling Information ♸

 

Recycling facilities for foam PS cups, clamshells, and trays are limited; however, access is increasing in the U.S. and Canada. Please check with your local recycler to see if PS is accepted in your recycling program, or visit the polystyrene foam recycling map to search for a recycler near you.

 

Did You Know?

 

  • Foam products consume less energy in production than paper alternatives.
  • Foam products are an environmentally sound choice when compared to alternatives on a cradle-to-grave life cycle basis.
  • Foam burns cleanly in modern municipal energy-from-waste facilities.
  • Polystyrene is an inert material (meaning it does not react with other substances) that is safe and sanitary.

Learn more about foam recycling in the U.S.

 

Literature Sheets

 

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