A new variation on a hybrid-electric press, as well as special machines designed for liquid silicone rubber (LSR), thermoplastics compounded with carbon nanotubes, or a paper pulp/starch mixture were introduced at the IPF show in Japan by Nissei Plastic Industrial Co. Ltd. (parent of Nissei America Inc., Anaheim, Calif.). Nissei now offers a new hybrid variant of its NEX all-electric machine with accumulator hydraulics on the injection unit and electric clamping. The NEX15-1FN is a 15-tonner designed for ultra-high-precision molding. A fast-response (4-millisec) hydraulic servovalve allows for injection acceleration 20% to 40% faster than an all-electric. Nissei’s previous hybrids used a servomotor to drive a hydraulic pump and had no purely electric functions. Earlier this year, Nissei started a material compounding service to supply its Voltiga thermoplastic compounds containing 5% to 10% carbon nanotubes for conductivity, lubricity, and/or high strength. Nissei has now developed a line of machines based on its PNX hybrid series specifi cally for processing Voltiga compounds. They have a new VT screw design for gentler processing. Nissei also introduced a Pulp Injection Molding (PIM) machine designed to process a biodegradable mixture of paper pulp, starch, and water. (PIM technology was developed by molder Daiho Industrial Co., Ltd. of Osaka, Japan, in 1998 and patented in 2001.) Nissei’s all-electric 110-ton NEX110-18EPI machine features a short, low-compression screw as well as a special clamp action with six open/close “breathe” cycles to release moisture given off by the materials. Material with starting moisture content of 35.2% is processed into a part with less than 5% moisture. The process uses a cold runner, a barrel cooling blower, and a material mixing unit. The EPI model is offered in any size in the NEX line. The show machine produced 0.4-mmthick PIM lids in four cavities and a 30-sec cycle, and also molded promotional CD/DVD cases (photo). Nissei also introduced a new LSR machine, the 88-ton FNX80-9ALM (photo), which uses servo-driven X-Pump hydraulic technology. A new pumping system feeds two-component LSR materials. Nissei says the metering controller has new functions to provide more uniform feeding. (714) 693-3000 • www.nisseiamerica.com +81 6-6908-8125 • www.daiho-hq.com
Nissei America, Inc.
1480 N. Hancock Street Anaheim, CA 92807
Phone (714) 693-3000
Editor PickNew ‘Long’ Carbon Nanotubes Show Promise In Thermoplastics, LSR
Novel hair-like nanotubes are said to “love thermoplastics” and to provide electrical conductivity at very low loadings.