K2019 | SHOW REVIEW
Right: New covers on the latest ZSE iMaxx extruder from Leistritz hide many design improvements
laser screens from 80-300 microns and mesh screens from 400 to 2,000 microns, combines the twin filters with two scrapers and two independent discharge valves that function automatically. For maximum flexibility in operation, the unit can be set to scrape and discharge at a predetermined pressure or, where high levels of contamination are being handled, to scrape continuously and discharge.
Main applications for the GEM are envisaged for
LDPE, LLDPE, HDPE and PP processing but the units can also handle resins such as PS and ABS, as well as EPS. Canaia said the company is putting the GEM model through its paces at an extrusion machinery producer’s site with a full market launch expected next year. �
www.fimic.it
KraussMaffei announced the upward extension of its ZE BluePower twin screw compounding extruder range with the launch of four new models with 98, 122, 142 or 166mm diameter screws and torque density of up to 16.5 Nm/cm3
(up by 35% on the
company’s previous offerings in this size range. The company says the new machines are designed for large national and international compounding companies with high production capacities where maximum reliability in 24/7 operation is a must. Maximum production outputs range from 2,500 to 12,500 tonnes/h. Gearbox and drive efficiency is a claimed 98%.
“The usual in the market is 96%,” said Nicolas Beyl, President of the KraussMaffei Reaction Process Machinery Segment, who introduced the new machines to the media at the show. “That’s a small difference but in a year of production it’s a lot.” From a process-engineering standpoint, the four large machines are identical to the smaller models
so consistent scale up is ensured. The larger extruders also offer the same screw and barrel modularity together with a wide range of 4D and 6D barrel sections and various side feeder and degassing units. A number of small design changes have been made due to the size of the new models; housing elements are now connected by screw unions rather than clamping flanges while ceramic heaters are used in place of cartridge heaters. �
www.kraussmaffei.com
Leistritz unveiled a heavily redesigned version of its ZSE iMaxx twin screw compounding extruder. Presented in a 27mm version, the new design will be implemented on 18, 27, 35, 40, 50 and 60mm models and is intended to provide greater flexibil- ity in terms of specification and to be more efficient in operation. The most noticeable change is in the machine
cover, which is manufactured in stainless steel and covers the barrel as well as the side feeder (the latter has also been upgraded in terms of volume). This is intended to minimise any contamination of the work area and is expected to prove particularly attractive to masterbatch producers, who typically carry out a lot of job changes and clean-downs. However, the new machine design includes a number of other significant changes. Access to the water manifold has been improved (and water components are now completely separate from the electrics), the temperature control unit is integrated into the machine frame together with the coax valves, a high efficiency gearbox is fitted with an energy-saving synchronous motor, and the barrel can now be fully insulated. Other changes include the introduction
Four new large models extend KraussMaffei’s ZE BluePower range to 166mm
62 COMPOUNDING WORLD | December 2019
of quick replacement cartridge heaters that are accessed via the terminal block. A new simplified shaft coupling system has also been developed and the die-head has been
redesigned to allow it to swing away from the machine after releasing just two bolts. The new iMaxx design follows a modular scheme to allow customers to build a machine that
www.compoundingworld.com
IMAGE: KRAUSSMAFFEI
IMAGE: LEISTRITZ
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