PTi's 'Dryer-Less' sheet extrusion system converts mixed regrind into high-quality thermoformed sheet

摘要

PROCESSING Technologies International (PTi), a leading global manufacturer of high-performance sheet extrusion machinery, has successfully demonstrated that its unique "dryer-less" twin-screw sheet extrusion production system can convert mixed regrind (PETG and APET) into processable, high-quality thermoformed sheet for consumer packaging. "Our dryer-less twin-screw system is a new option that is well suited to process post-consumer and post-industrial PET GAG regrind, unlike conventional extrusion systems that require a dryer and a crystallizer," said Sushant Jain, senior scientist for PTi. Production-scale trials were run on PTi's 85-mm high-vacuum twin-screw extruder with 100 GAG scrap. Clear mixed material sheet was produced thus demonstrating a successful method to recycle GAG sheet scrap. The final blend was composed of approximately 20 PETG/80 APET.