TPEs | MATERIALS


Process gains help TPEs penetrate new markets


Ease of processing combined with impressive aesthetics and good mechanicals mean TPE compounds continue to offer something different. Mark Holmes looks at the latest developments and applications


TPE compounds are penetrating many applications and markets, from automotive, electronics and medical to high-end packaging and construction and sporting goods. The materials are both replacing existing polymer options and finding new roles due to their unique properties, most notably their favourable mix of mechanical perfor- mance, ease of processing and aesthetics. Sustainability remains a major theme in TPE compounding, according to Hexpol TPE. “With initiatives such as The New Plastics Economy, growing political discussion and an increasing awareness about how we design, use and dispose of plastic products the drive for sustainability and circular products will continue to grow,” says Klas Dannäs, Global R&D Manager. “We are supporting customers with various approaches. On the one hand we have Dryflex


www.compoundingworld.com


Green, a family of TPE compounds based on raw materials from renewable resources such as plant and vegetable crops. To give the right balance or renewable content, performance and mechanical properties, we continue to investigate new sources of raw materials as they become available. These include products and by-products from agricultural that are rich in carbohydrates, especially saccha- rides such as grain, sugar beet and sugar cane. We are also working with suppliers and customers to discuss how we can improve life cycle impact; from where the raw materials are sourced, how our compounds are produced, packaged, transported and what happens at the end of a products life,” Dannäs says. Recent additions to the Dryflex Green portfolio include compounds for multi-component applica- tions that offer improved adhesion. Hexpol says its


Main image: TPEs can replace traditional elastomers in demanding applications such a medical syringe stoppers, offering lower cost and reduced volatiles


June 2018 | COMPOUNDING WORLD 71


PHOTO: TEKNOR APEX


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