2016 | Extruder technology
process reliability when using critical materials. Overall energy cost savings of up to 15% are also
possible – partly through needing less drive energy, and partly due to the cooling of barrel and grooved bush, which reduces heat discharge. And, because the new processing unit retains the basic structure of previous models, it can be retrofitted onto them. SolEx NG extruders, with their high outputs and melt
processing capacities, are suited to polyolefin pipe lines with diameters up to 2.6m.
Enhanced extrusion Tecnomatic will introduce an enhanced version in its Zephyr extrusion series in L/D 40, both in a gearless and a traditional version (with gearbox). Zephyr is the highest performing extruder in
Tecnomatic will show its Venus 5-40 multilayer die head, along with its enhanced Zephyr extruders
fins such as HDPE to be processed in a range of diameters: 25-63mm; 63-140mm; 75-160mm; 160- 250mm; 250-450mm; and now, 280-500mm.
Energy reduction Battenfeld-Cincinnati is to introduce the SolEx NG series of high-performance single screw extruders. Based on the existing SolEx series, the new extruders feature a completely new processing unit which offers several advantages – including lower melt temperature and a 15% reduction in energy costs. Based on the SolEx 40D extruder series, which are aimed at high-performance applications, the new units feature redesigned barrels, screws, and grooved bushes. The new version has an internally grooved barrel, a
screw concept that consistently applies the theory of dispersive melting, and a feed zone with a completely revised geometry that is fitted with spiral grooves. The SolEx NG extruder series is available in four sizes – 60, 75, 90 and 120mm – with outputs of 1,000- 2,500kg/h. This is an increase of up to 25% for each machine size, compared to the original SolEx series. One benefit of the new design of processing unit is
Battenfeld- Cincinnati will introduce its SolEx NG series of
high-perfor- mance single screw
extruders
an increase in melt capacity, along with gentle and energy-efficient processing. Melt temperature in the extruder is reduced by up to 10°C for compara- ble outputs, while melt homogeneity remains at a consistently high level. Modifying the conveying mechanism has
reduced the axial pressure profile in the feed zone and barrel – cutting pressure across the entire system and enabling an increase in the specific output level. Also, the processability of regrind is improved, so that higher amounts of regrind can be processed without impairing process behaviour. Wear behaviour is also expected to improve, leading to higher
34 PIPE & PROFILE EXTRUSION | October 2016
Tecnomatic’s product range, offering high output performance at lower melt temperatures. The company says that the latest versions offer higher performance and energy efficiency, thanks to innovations in the screw and motor designs, as well as a new spiral grooved bush. The new feed bush reduces the friction generated by
raw material transport, with a subsequent increase in throughput. Redesigning the screw to optimise and enhance its torque and shearing elements, has boosted output and allowed the material to be processed at lower melt temperatures. To meet the requirements for production efficiency the machines are equipped with torque or water-cooled motors – in this case with a one- or two-step gearbox – and compact water-cooled inverters. These solutions, combined with the mechanical features, ensure outstanding power consumption levels, low noise operation, reduction of workload for maintenance, higher efficiency within wide speed and load ranges, and faster dynamic response, says Tecnomatic. Zephyr extruders are offered in four
screw diameters, with a maximum output of 1,700kg/h.
In addition, Tecnomatic will display two multilayer die-heads: the Venus Multi 250
Quattro, for the production of PE pipes up to 250mm in four layers; and the Athena 5-40,
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