MATERIALS | FOAMED SHEET
Right: Krauss- Maffei Berstorff produced co-extruded PVC sheet at its recent Compe- tence Forum
Co-extrusion competence At its Competence Forum event earlier this year, KraussMaffei Berstorff demonstrated the produc- tion of co-extruded PVC sheets. “We showed our visitors cost-effective and
flexible manufacturing of PVC sheets,” said Mat- thias Sieverding, president of extrusion technology at KraussMaffei. A variety of co-extruded products can be
created using cost-effective materials using the ‘total system’ concept and used in applications in the construction industry, container construction and advertising, he said. The main extruder KMD 133-32/PL produced a foamed intermediate layer with an output of up to 1100 kg/h, while a KMD 75-26/PL co-extruder produced a solid outer layer with an output of up to 240 kg/h. The flexible design allows the processor to modify a mono extrusion in just a few steps, says the company. “The KMD 164-32/PL twin-screw extruder has a very high output of up to 1400 kg/h and shows our comprehensive expertise in sheet extrusion,” said Sieverding. And, at the NPE show, Gneuss showed a complete Gneuss Processing Unit (GPU), as well as a Multi Rotation System MRS 130 extruder, RSFge- nius 150 melt filtration system and an online viscometer VIS, for the processing of 2,000lbs/h of undried and uncrystallised polyester (PET). The technology has been particularly successful
Below: Tekni-Plex says it will benefit from incorpo- rating Commo- dore’s trays business into its own
in PET sheet extrusion. As well as producing high quality rigid sheet, Gneuss now offers the option for its PET sheet extrusion lines to switch to physically foamed PET sheet by adding its new PET foam module. Foamed sheet, with a weight reduction of 50%, can be extruded with a consist- ent foam structure and mechanical properties – us- ing up to 100 % post-consumer material.
Expanded trays Earlier this year, US-based Tekni-Plex acquired a manufacturer of food trays and its sister company, which makes extrusion machinery. It has bought Commodore Plastics – which makes traditional and custom polystyrene (PS) foam trays, including padded food processor, supermarket and indus- trial trays – and Commodore Technology, which makes PS foam extrusion systems, dies, thermofor- mers and other products to support its sister company’s production needs. The two Commodore companies have been
brought under a newly-formed Tekni-Plex subsidi- ary called Dolco, which makes foam egg carton trays and PS trays for food processing and other applications. Also in North America, German polystyrene foam manufacturer Selit has invested $45m in a new manufacturing facility in Georgia, USA – in a move that is expected to create 100 jobs. Selit’s products are used as flooring underlay, and it is a leading producer in Europe. “We are looking forward to being located even closer to our longstanding customers in the South,” said Marco Seitner, shareholder of Selit North America. Last year, Selit was acquired by Luxembourg- based NMC, whose interests also include synthetic foam.
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.sekisuialveo.com �
www.milliken.com �
www.sabic.com �
www.momentumadditive.com �
www.kraussmaffeiberstorff.com �
www.gneuss.com �
www.tekni-plex.com �
www.selit.com �
www.luigibandera.com �
www.covestro.com
18 FILM & SHEET EXTRUSION | December 2018
www.filmandsheet.com
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