exhibition review | Fakuma 2015
Right: Leistritz demonstrated its ZSE 27i
MAXX extruder for lab and small batch applications
has also been improved, thanks to a system of spiral- shaped channels that create a lower pressure drop. To achieve optimum wear protection, the BluePower
units incorporate new wear liners that complement induction-hardened or coated barrel sections. Elliptical shoulder liners are said to provide high heat transfer and “perfect” tightness of the processing chamber, thanks to what the company describes as unparalleled fitting accuracy and axial fastening. The extruders also feature a new generation of enlarged side feeders. At Leistritz, export sales manager Walter Theiler said business continues to be good for the company’s twin-screw extruders. To underline his point, he said one major masterbatch customer that he expected to buy one machine at the show actually walked away having placed an order for three. On the stand, the company demonstrated a ZSE 27i MAXX, which Theiler said is suitable for laboratory work and also for production in companies producing small batches— something that is increasingly the case, he noted. It is suitable for outputs between 15 and 100 kg/h. New from Entex was the ZSP 70 central spindle unit
for its planetary roller extruders. This incorporates a new fitting for connecting the unit to the gearbox, providing extra working length. As a result, it is said to provide more than 30% extra torque compared with the standard spindle. On the Gneuss stand, technical sales manager
Below: An Econ EUP 10 underwater pelletizer next to a small compounding extruder from fellow Austrian equipment supplier MAS
Andrew Prangnell said the company has been working with the SKZ plastics institute in Germany on address- ing problems associated with incorporating nano particles of additives such as titanium dioxide effectively into plastics compounds. The two organisations’ joint approach involves producing an aqueous slurry of nanoparticles, which is then combined with the plastic melt (PET is used in the tests, but the technology is applicable to other polymers such as polycarbonate and polypropylene) in a standard twin-screw extruder. The
water is removed by passing the material through Gneuss’s MRS multi-screw compounding system, connected to the twin-screw extruder in a cascade arrangement. “The twin-screw extruder provides intensive kneading, and the MRS appears to further improve dispersion, but its main role is in degassing, for which it is ideally suited,” said Prangnell.
Pelletizers ECON was displaying a system capable of air and underwater pelletizing for the first time. The EWA – ECON Water & Air pelletizer can be switched between one mode and the other in around 15 minutes. The unit is designed especially for laboratory applications, where flexibility is particularly important, but the company is also working on larger versions for handling up to 1 tonne/h throughputs and possibly beyond. ECON’s lab-scale EUP 10 underwater pelletizing unit was also on show, fitted with a new Schneider control. Magdalena Deisl from the company’s sales administra- tion and marketing department said the head is more adaptable to extruders than before and drying has also been improved, thanks to the inclusion of an improved process water pump. A heat exchanger and fan can also be installed as options. ECON’s pyrolysis unit for cleaning tools has also undergone a facelift, with an improved user interface. Reduction Engineering continues to make improve-
ments to its Scheer pelletizing systems. Its SGS E cantilevered model, which is well-suited for lines producing masterbatch, has been optimised for faster
18 COMPOUNDING WORLD | November 2015
www.compoundingworld.com
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