>> INFOCUS – the Coperion Newsletter.
Edition 04 I 2012
Coperion secures majority stake in PELL-TEC
Product portfolio now extended to include pelletizing technology
Effective January 1, 2012, Coperion acquired a majority stake in PELL-TEC Pelletizing Technology GmbH, Niedernberg, Germany. Established over ten years ago, PELL-TEC supplies pelletizing systems to customers operating in the plastics processing and recycling industry. PELL-TEC’s product portfolio covers the entire pelletizing process from melt discharge through to ready-to-use pellets. The pelletizing systems are capable of throughput rates of up to 6,000 kg/hr.
Coperion has taken further steps to consistently strengthen its competence as a systems supplier and is now also able to supply tailor-made pelletizing solutions for small and medium-sized extruders – offering complete systems from a single supplier. Coperion and PELL-TEC have been successfully working together for a number of years.
“As a majority stakeholder in PELL-TEC Pelletizing Technology GmbH,” says Thomas Kehl, Member of the Executive Board of Coperion, “Coperion has taken a logical step towards substantiating the already successful business partnership between our two companies. In the future we shall work together with PELL-TEC on the further development of the existing range of strand pelletizing systems, our main objective being to extend the size range across all throughput requirements.”
Sabine Schoenfeld, phone: +49 (0) 711 897-3175, e-mail
Eberhard Dieterich, phone: +1 201 825-6408, e-mail
FET – Feed Enhancement Technology
Considerable increase in feeding and throughput rate for materials with low bulk density
In order to operate competitively, a compounder needs to be able to process a constantly increasing variety of recipes and at the same time keep the running costs as low as possible. Raw materials with low bulk density such as talcum or graphite are frequently used and the productivity of these processes often depends on the feeding into the twin screw extruder. With the FET Feed Enhancement Technology, Coperion has developed a solution for ZSK twin screw extruders that leads to a greater improvement in the feeding and throughput rate for the processing of materials with low bulk density.
In the FET equipment a vacuum is applied externally to a porous, gas-permeable insert in the feeding section. The friction coefficient between the product to be processed and the barrel wall increases and the air carried in the bulk material is extracted. The feed rate of the materials with low bulk density is increased considerably (see figure).
FET inserts can be installed in the feeding zone of the ZSK twin screw extruder, before the melting zone, or in the barrel of a ZS-B twin screw side feeder to improve the feeding of fillers downstream into the processing section. The Feed Enhancement Technology can be supplied on new equipment or retrofitted to existing running lines to achieve increased throughput resuslts and overall greater process efficiency.
Helmut Hiller, phone: +49 (0) 711 897-3239, e-mail
Rich Taylor, phone: +1 201 825-6445, e-mail
Horizontal fluidbed separator HFS
Pellet cleaning for plastics processing plants
The HFS horizontal fluidbed separator, which was first introduced to the market in 2010, successfully proves to be reliable in operation. This efficient, room-saving elutriator is currently successfully being used in numerous plastics plants for pellet cleaning operation. The elutriator is available for small throughputs starting with approx. 800 kg/hr and rounds off the Coperion separator range with the UGS counterflow elutriator and the SRS gravity rotation separator in the lower capacity range.
The HFS even cleans difficult products such as brittle, fragile or rubbery bulk materials thoroughly and effectively. At the same time, the gentle cleaning process protects the product, and the separator energy and air consumption is very low. It is ideal for installation in systems in which the product purity is an essential factor for manufacturing, subsequent processing or supply quality.
In Germany, for example, a new line for producing high-purity PMMA started operation in 2011. The HFS-3 supplied separates the dust from the raw pellets upstream from the extruder and successfully meets the demand for "PLEXIGLAS® to glass standard". For a customer in Saudi Arabia, a special HFS 20S was developed to achieve a required capacity of 35 metric tons per hour for PET application.
The HFS has been successfully proven in installations across its entire product range. It is available in model sizes that support throughput capacities of 800 to 20,000 kilograms per hour. Each of these sizes has already been sold to customers in Europe, NAFTA and the Middle East.
Michael Kramer, phone: +49 (0) 751 408-736, e-mail
Jai Patel, phone: +1 281 449-9944, e-mail