Plastics Technology - Dedicated to improving Plastics Processing.
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www.kraussmaffeigroup.us Sheet extrusion lines from KraussMaffei Berstorff process a wide range of materials and deliver perfect product quality with minimum energy consumption. In addition to our turnkey extrusion lines, we are a reliable and innovative partner who has more to offer: We will support you in product development and process optimization, and supply you with customized solutions ranging from lab and pilot lines up to high throughput production system with superior product quality. The following options are available for your process: – Single-screw and twin-screw extruders to run pellets, regrind, powder and liquids – In-line compounding for high filler content or abrasive additives – Throughput range from 60 – 6.000 kg/h – Polishing stacks for thicknesses ranging from 0.05 to 60 mm and widths from 600 to 6.000 mm – Options for lamination, coating and fabric reinforcement – Downstream equipment for winding, cutting and stacking the finished sheets Sheet extrusion lines in perfection Hot-Runners & Coinjection at Fakuma At the recent Fakuma 2014 show in Germany, Mold-Masters, Georgetown, Ont. (moldmasters.com), presented several new developments in hot runners and coinjection: • Mold-Masters and German sister company Ferromatik Milacron (U.S. offce in Batavia, Ohio; milacron.com) demonstrated four-cavity coinjection molding of PP/ EVOH/PP fruit cups in 3.5 sec. The cups were 0. 5-mm thick with the EVOH barrier layer occupying 5% of that thickness. The application combined a Mold-Masters E-Multi auxil- iary injection unit mounted vertically on the mold (photo) with the Kortec coinjection nozzle technology recently acquired by Milacron. The demonstration showed how, for the frst time, Kortec coinjection technology is available as a drop-in option, rather than requiring purchase of a complete dedi- cated machine system. • The servo-driven E-Multi line has been expanded with the addition of the E-Radial version, which swings around to the non-operator side for mold changes. Mold- Masters is also developing versions with higher speed and pressure—raising injec- tion speed from 500 mm/sec to 600 mm/ sec or more while retaining high pressure. • Mold-Masters' new Fusion Series G2 F7000 nozzle is the new largest model in the Fusion range. It offers bore sizes up to 22 mm and lengths to 1000 mm for large automotive parts, returnable crates, and outdoor furniture. It also offers new gating styles and redesigned wire channels for increased durability and easy serviceability. The Fusion G2 line now also has feld-replaceable heaters for reduced downtime, plus an upgraded valve-disk design for faster color changes. • The next generation of the Melt Cube side-gate system for medical parts is said to be more robust and applicable to a wider range of materials—from the highest- fow LLDPE (130 MI) to polycarbonate. • An enhancement for its Sprint high- speed hot-runner system for closures, the new EcoDisk is a 70mm ceramic pad installed fush with the bottom of the clamp plate above the pressure disk. It provides up to 21% energy savings and dramatically improves the thermal balance at the nozzle. • The new TempMaster iM2 hot-runner temperature control is integrated with the machine control. It provides all the func- tions of the TempMaster M2 version without any additional control footprint. Features include a 1-button purge sequence and Purge Wizard. Mold-Masters is working on the ability to add control of stepper motors for water-fow valves on the mold. INJECTION MOLDING 70 DECEMBER 2014 Plastics Technology PTonline.com Keeping Up W it h Technolog y