Foam Polystyrene #6

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 moulding.

Recovery & Recycling Information ♸

Recycling facilities for foam PS cups, clamshells, and trays are limited.

Please check with your local recycler to see if foam PS is accepted in your recycling programme.

Literature Sheets