STYRENIC PLASTICS | INNOVATION
dissolution or other advanced recycling methods. The Woodlands, Texas, USA company has since 2013 marketed a variety of products with post-consumer recycled content under its PolyRenew brand, which is suitable for food contact applications. The resins are produced using an internal dissolution process developed at its Connecticut polymer plant, says Tim Barnette, Vice President of Polymers and Sustainability. Its material has been used in extruded low-den- sity foam products such as egg cartons, meat trays and takeout containers, and in rigid applications including condiment packaging, cups, and cutlery. This year AmSty will begin transitioning all of its PolyRenew products, including its dissolution products, over to the ISCC Plus system, to provide total flexibility to customers in their efforts to target sustainable end products. AmSty last year entered into a Memorandum of Understanding and long-term offtake agreement
for circular polystyrene feedstocks with Encina Development Group, a circular chemicals producer that has developed a proprietary recycling technology that creates circular monomers from post-consumer and scrap plastic. Encina’s BTX/P catalytic process works at the molecular level, where the polymer chains
are split apart and converted back into their original chemical building blocks. The building blocks
can then be reused to make new products.
Encina last year received ISCC Plus certification. Encina plans to construct recycling facilities in
the US, Asia, and South America. Each facility is expected to process approximately 450,000 tonnes of post-consumer and scrap plastic material each year, says Sheida Sahandy, Chief Sustainabil- ity Officer at Encina. The company’s first US commercial plant in Pennsylvania is anticipated to come into production in early 2025. Under the MoU, AmSty will have the opportunity to purchase up to 250,000 tonnes per year of
Left: AmSty is using
mechanical, dissolution and other methods to recycle polystyrene
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