Plastics Technology

AUG 2018

Plastics Technology - Dedicated to improving Plastics Processing.

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The perfect blend. Every time. Plastrac puts you in total (touchscreen) control. Our new touchscreen controller, optional on all our blenders, puts complete, intuitive process management at your fingertips. Set-up parameters are viewable during operation and stored automatically. There is a non-volatile shot counter. A thumb drive enables easy software updates and transfer of the recipe files. A full keyboard enables easy entry of all recipe and component names. All events and alarms are captured with both a real time and a day stamp. In other words, everything you always wanted to know about blending in a single panel. 610-356-3000 • Plastrac.com code 7) to extrudable PET, or EPET (recycling code 1), in order to make clear bottles that can be mixed with the standard PET recycle stream. Machines for EPET reportedly need higher clamp force and a longer extruder that can run at lower rpm to generate less shear. The looming issue, sources said, is availability of sufficient quantities of high-melt-strength EPET resin to support this increased demand. Meanwhile, Bekum discussed two new features of its EBlow and HyBlow machines. One is the adaptation of Bekum's spiral-flow head to smaller sizes (e.g., 40 mm). Another is a quick-mold-change option that reportedly allows changeovers in less than 15 min per side without tools. Mold change is from the front instead of the side, an unusual arrangement that allows closer spacing of machines in a plant. One element of this QMC technology is magnetic clamping of the molds and blow pins; the mold comes out with the pins in place. As reported last month, W. Müller USA (mullerheads.com) showed how it can dramati- cally reduce color-change times by applying a plasma spray coating of amorphous metal onto the flow channels of its continuous-extrusion heads. The coating is said to be more lubri- cious, lowering the tendency of the plastic to stick to the metal. SACMI of Italy (U.S. office in Des Moines, Iowa; sacmiusa.com) demonstrated production of super-lightweight barrier HDPE phar- maceutical bottles with its unique Compression Blow Forming (CBF) system in a joint project with Milliken & Co. (millikenchem- ical.com) and blow molder Jarden Plastic Solutions, Greer, S.C. (jardenplastics.com). The 90-ml bottles were molded of Dow 6620 Health+ HDPE and Milliken's new, proprietary UltraGuard additive, Examples shown by Bekum of growing applications in extrusion blown EPET, in some cases replacing PETG copolyester for enhanced recyclability. 44 AUGUST 2018 Plastics Technology PTonline.com NPE WR AP-UP

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