An Italian company, RPC Cobelplast srl, has purchased a sheet extrusion line from Berstorff GmbH to run PET without the need for pre-drying.
The three-layer line uses a co-rotating twin-screw extruder with vacuum degassing and includes a horizontal three-roll smooth stack, plus a laminating unit, all made by Berstorff of Hanover, Germany. It also has a filter system that can remove a high degree of contamination.
Cobelplast has made sheet for more than 30 years, starting with polystyrene sheet. The company in Montonate, north of Milan, added PET sheet in the 1990s. Up until now, the plant has run four single-screw extruders to make all its products. The Berstorff machine, which can run both PP and PET, will nearly double the total production.
Cobelplast is part of the RPC Group of Higham Ferrers, the United Kingdom.
The extruder maker's U.S. headquarters is Berstorff Corp. in Florence, Ky.
Tel. (859) 283-0200, fax (859) 283-1860.