Fitted with the patented MB melt pump, which enables short changeover times between different production batches and a reduction of waste during colour and product changes, output went up by 40%. And when dealing with difficult TPE types, the output was increased by 100%, claims the company. New products to complement portfolio Kreyenborg credits itself for being a market leader for screen changers and thus is able to offer the appropriate machine for each filtration application, ranging from discontinuous and continuous systems to fully automatic backflush screen changers. The screen changers are applied together with the melt pumps, which are suited for tasks in the extrusion and reactor discharge. Melt pumps are available in different series and are suited for extrusion and reactor discharge applications
Current gear p u m p s a r e electrically heated by means of cartridge o r b a n d heaters and are used to process non-sensitive polymers. For temperature s e n s i t i v e polymers, gear pumps with fluid heating systems are preferable. These are characterised by an even temperature control without local overheating o r h o t s p o t s i n t h e p u m p b o d y. Ty p i c a l l y, t h e fluid-heated pumps available on the market can offer only marginal control of increases in temperature that are caused by frictional heat. As such, Kreyenborg has developed a new series of GPX pumps that avoid random peaks in the melt temperature, caused either by the heating control system or by frictional heat. The problem has been solved by a newly developed design of the oil channels in the pump housing, which enable optimal control of the melt temperature.
Kreyenborg Plant Technology’s IRD infrared drum for drying and crystallising material
Furthermore, the new design and temperature control system developed by Kreyenborg has been optimised by the use of flow simulations. The company says since commissioning the pump in a pilot application, it has been proven. The pump is targeted at TPE and TPO processing. M e a n w h i l e K r e y e n b o r g P l a n t Te c h n o l o g y , having seen far more market acceptance for its IRD, especially in the first six months of 2011 when it sold more systems than last year, is not content to rest on its laurels. It has expanded its product portfolio by adding on a higher power range to t h e IR D - B s i n g l e - s i d e d t e l e s c o p i c i n f r a r e d u n i t . I n t r o d u c e d e a r l y t h i s y e a r, t h e 1 8 0 / 3 6 0 m o d e l i s able to cater to an output of up to 1,500 kg/hour. As well, the company says with one-third less space required, ease of cleaning and the lower capital costs, the model is quickly being taken up by the market, especially for processing PET resins and PET bottle flakes. Still made in Germany Even with its expansion in the region, it might not be a plan for Kreyenborg to produce its machinery in Asia. “We clearly focus on the advantages of our manufacturing locations in Germany,” Kreyenborg said. “This is the only way our customers can capture the full benefits of the precision and reliability of our products as we have complete quality control i n o u r o w n f a c i l i t i e s . ” H e added, “As a special service, we offer testing at our stateof-the-art in-house pilot line. Here, our customers can test various components with their own materials under realistic production conditions.” Nevertheless Asia, he says, is an important region and he believes that there will be increasing demand for Kreyenborg’s German-made machines in the region in the future. ◆
"We clearly focus on
the advantages of our manufacturing locations in Germany.
OCTOBER / NOVEMBER 2011
Plastics and Rubber Asia October-November 2011 electronic issue