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Modified Polystyrene

Learn more about this material, including recovery and recycling and which Dart products are made from it.

Ready to talk? Fill out the form below, check off the products you are interested in and a Dart Sales Rep will be in touch!

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WHAT IS MODIFIED POLYSTYRENE?

Modified polystyrene is an economical choice for serving hot foods or foods that potentially need to be reheated in the microwave. Products made from modified polystyrene are marked by a “6” within a solid triangle – its resin identification code. This is usually found on or near the bottom of the product.

Modified polystyrene starts as a liquid monomer and is transformed into a stable, solid polymer. It’s then used to produce containers through thermoforming or injection molding.

Thermoforming

requires laying an extruded sheet of plastic over a mold. Then heat and suction are used to form the plastic into the shape of the mold. Once shaped, these sheets are cooled and trimmed to create the finished product.

RECOVERING & RECYCLING MODIFIED POLYSTYRENE

Modified polystyrene can be recycled. Recycling facilities are limited at this time; however, access is increasing in the US and Canada. Packaging that is less than 2”x2”x2” or black in color is unlikely to be recovered at typical sorting facilities.

For the most accurate information, we recommend checking with your local municipality or waste hauler to see if modified polystyrene is accepted in your community’s recycling program.

You may also search for modified polystyrene container recycling by zip code or mail-back program at Earth911.

Temperature Range

33°F to 225°F

Temperature ranges should only be used to guide the customer's testing protocol to ensure the product will work properly for their specific application.

Microwavable

Products

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