High speed, low consumption

BMB, headquartered in Brescia (Italy), showed its eKW electric injection moulding machines at PLAST 2012. These machines are similar to hydraulic presses in terms of cycle and precision but differ in that they require less power and emit less noise. While these characteristics hold true for all applications, they brought an especially positive response among producers of plastic packaging (especially the low consumption). Very quick cycle times are required here, which results in high hourly consumption. There are thus significant advantages in choosing electric machines over their hydraulic counterparts, making it possible to reduce power requirements by 45-60%.
BMB exhibited its patented eKW70PI/5500 Full Electric machine at PLAST 2012. It features an innovative all-electric injection unit with two synchronous motors that drive high-load planetary screws for the injection movement. The plasticizing step is driven by a third dedicated asynchronous electric motor. At the fair this machine produced a 350-g disposable box with an 8-sec cycle time.