Plastics Technology

DEC 2018

Plastics Technology - Dedicated to improving Plastics Processing.

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quality benefits through improved balancing of high-cavitation molds. For that reason, the company is exploring cap and closure applications. iMFLUX has also done some experiments with the process in co-injection and gas-assist molding. At Fakuma, iMFLUX showed a new enhancement in the form of automatic viscosity-adjustment software. It recognizes a change in melt viscosity and adjusts filling to maintain consistent low pressure. At the show, this capability was demonstrated by switching on the fly from molding a 20 MFI PP to 8 MI PE and vice versa. In real life, iMFLUX sees this capability as assisting in the use of scrap or recycled materials, whose viscosity can be variable, especially when the proportion of reused materials may vary. (See October blog for more details.) RAPID INSPECTION OF PARTS' INTERNAL FEATURES A new noncontact, nondestructive, and nonhazardous technique can perform dimensional QC and look inside plastic parts for voids, for- eign bodies, foam structure, glass content and glass orientation in as little as 30 sec. New TrexelVision system offers a way to perform immediate shop-floor inspection and QC without sending parts to the lab. It allows you to "see the invisible" inside solid or foamed parts either in-line or off-line. TrexelVision is the result of an exclusive distribution agreement that allows Trexel, the source of MuCell microcellular molding technology, to offer the STRIPP Control IM technology for injection molded parts from TeraTonics of France. STRIPP stands for Single Shot Terahertz Sensing for Rapid Industrial Product & Process Control. It employs terahertz (THz) spectroscopy, a method involving ultra-short pulses (measured in picoseconds, or 0.001 nanosecond) of electromagnetic radiation in the submilli- meter wavelength range—in between microwaves and infrared light. TrexelVision integrates a broadband source and detection system With 1933 exhibitors from 40 countries, the Fakuma 2018 show in Friedrichshafen, Germany, attracted 47,650 visitors over five days in October. Fakuma was loaded with news—much more than one article can present; so the following is a brief selec- tion of some major introductions and themes at the show. (See also Fakuma news announcements in Starting Up and Keeping Up sec- tions this month and in our August through November issues.) MILACRON INTEGRATES IMFLUX PROCESS As previously reported in an October Starting Up, Milacron announced—and demonstrated live—a first-of-its-kind collabora- tion with iMFLUX, the new subsid- iary of Procter & Gamble that developed a novel injection molding concept based on low and highly consistent injection pres- sure. Through this agreement, Milacron will integrate iMFLUX's proprietary process-control soft- ware into its injection machines with a native user interface and screens on its Mosaic controller. Milacron will be the first machine builder to offer such integration, which eliminates the need for a separate iMFLUX control screen. iMFLUX uses low but highly consistent pressure, allowing velocity to vary with the geometry of the part, to achieve up to 50% faster cycles with reduced part weight, lower stress, less warpage, and fewer sinks, as explained in a March '18 feature article. Outfitting a machine for iMFLUX typically requires a nozzle adapter with a pressure sensor, a CPU in the control cabinet to send signals to the machine controller, and special control software. Company sources say the process has been tested on machines from 20 to 5500 tons and on molds with up to 196 cavities. Although iMFLUX offers relatively little speed advantage in very fast-cycle molding, it reportedly still offers By Matthew H. Naitove Executive Editor Ethan Stiefel, iMFLUX plastics processing engineer, demonstrating the iMFLUX low-pressure process integrated with Milacron's Mosaic press controller. Headlines from Fakuma 2018 Integrating a special low-pressure process into machine controls; novel shop-floor quality-inspection technology; MES systems from machine and controls vendors; and sophisticated in-mold decorating. 14 DECEMBER 2018 Plastics Technology FA K U M A 2 0 1 8 Close -Up On Technolog y

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