NEWS
Buss adds cascade option for PVC
A cascade-configured Compeo 176 PVC machine rated at 12.5 tonnes/hr
Buss says it can now supply its larger modular Compeo plasticised PVC compounding systems in a two-stage cascade configuration, which reduces residence time for thermally sensitive formulations. The new configuration is available on 137-sized machines and larger. By decoupling the discharge and pelletising unit from the compounder, back-pressure build-up is avoided at the transition so the risk of exposing the compound to extreme tempera- tures is reduced. A further benefit is that the free-fall connecting tube and diverter valve can be operated and
cleaned without tools. The single-screw discharge unit, which generates the pressure re- quired for pelletisation, is arranged at right angles to the compounder, helping to keep the overall system compact. Screw lengths of 4 or 6 L/D are possible, according to Buss. “When it comes to compounding plasticised PVC, the decoupled configuration has particular advan- tages over our usual conical twin- screw discharge unit,” said Buss Head od Development and Design Dino Kudrass. �
www.busscorp.com
LyondellBasell unveils its Circulen brand strategy
LyondellBasell has launched the Circulen brand to bring together its recycled and renewable polymers, which are initially available in Europe with the North America and China regions to follow. The company said the new brand-
ing represents the next step in “delivering on its sustainability goal of producing and marketing two million tonnes of recycled and renewable- based polymers annually by 2030”. The Circulen family comprises
three ranges of polymers: CirculenRe- cover grades are made from mechani-
www.compoundingworld.com
cal recycled material from its Quality Circular Polymers joint venture; CirculenRevive grades are made using the company’s MoReTec plastic-to- feedstock chemical recycling process; CirculenRenew grades are made from renewable feedstocks such as used cooking oil. Circulen products are already being used commercially in the latest Samsonite Magnum Eco suitcase line and in some types of garden equip- ment, such as watering cans, Lyondell- Basell said. �
www.lyondellbasell.com
IMAGE: BUSS
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