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As reported in September, flat film and sheet toolmakers are focusing on nanolayer systems. Extrusion Dies Inc. LLC showed its “layer multiplication” technique, which relies on a special tool that can be engineered to multiply some or all of the layers within a coextrusion “sandwich” provided by a feedblock. Cloeren Inc. displayed nanolayer feedblock technology permitting structures up to 34 layers.
In sheet, PTi LLC debuted the Revolution series roll stack. This is a horizontal stack suited for processing materials with low melt strength. Davis-Standard (davis-standard.com) displayed its capabilities for PLA and PET sheet from 25 to 70 in. wide, 0.008 to 0.080 in. thick, with outputs to 7040 lb/hr.
Welex announced shipment of a versatile nine-extruder, multi-die system to an undisclosed European processor. The line will run a variety of products from monolayer to complex coextrusions. The dies are mounted on rails to permit them to move quickly in and off line for changeovers.
Gneuss launched a complete line for PET recycling, featuring its MRS 110 multi-screw extruder. The line is also equipped with an integrated cutter/feeder, Gneuss’ RSF Genius 150 screen changer, and an on-line viscometer.