Molding system reduces blemishes

Aug. 24, 2015
This new plasticizing system, from Nordson Xaloy, combines special component designs and flow surfaces to help injection molders of optical-grade PC, acrylic and similar polymers produce high-clarity parts.

PC Molding System This new plasticizing system, from Nordson Xaloy, combines special component designs and flow surfaces to help injection molders of optical-grade PC, acrylic and similar polymers produce high-clarity  parts. It has several PC-specific components, including a Pulsar II mixing screw that has been modified to minimize the color degradation of PC caused by shear during mixing and prevent material from sticking to sites on the screw where blemishes can form; a barrel with X-800 inlay designed to prevent polymers from sticking to the barrel; a nickel-plated end cap designed to smoothly transition the melt from the screw to the injection nozzle; and a valve for free-flowing melt delivery. 

What's new? The system, which will be officially introduced at Fakuma 2015 next month in Friedrichshafen, Germany.

Benefits Fewer blemishes, reduced scrap and increased productivity. The system helps address the causes of yellowing or discoloration in PC, making it ideal for processing lens-grade or colored PC for automotive lighting, eyeglasses, optical disks, and electrical and telecommunications components.

Nordson Xaloy Inc., New Castle, Pa., 724-656-5600, www.xaloy.com