MACHINERY | MELT FILTERS
intensive reactor or a deposit-prone stirring unit, enables a controlled IV build-up of up to 30%, the company says. IV is continuously monitored by means of an
integrated viscosity measurement unit and reliably adjusted in the event of deviation, such as those caused by disparate input qualities, for example. At the same time, the Visco+ provides an enormous material surface compared to the volume and is continuously renewed. Contamination can be removed effectively from the starting material by means of automatically regulated high-perfor- mance vacuum, ranging from 1 to 30 mbar. German melt filtration technology provider
Above: A Gneuss SFX Magnus rotary filtration system in a production environment
pistons is first moved into the backflush position, which interrupts the melt flow of the corresponding filter. A small flow of clean melt is branched off and directed backwards through the filter, where it cleans the filter and is discharged to the outside.
Integrated IV boost German company BB Engineering has extended its portfolio to include a patented large-area vacuum filter especially for processing polyester waste. Instead of operating as a classic PET melt-filter, the screen surface is used to apply liquid-state polycondensation and vacuum to produce material with the desired IV value. This Visco+ vacuum filter is a key component of the company’s VacuFil recycling system and is available as a separate but easy-to-integrate upgrade component for existing systems. BB Engineering says the Visco+ unit operates
like a liquid-state polycondensation unit. Moisture is removed from the PET, which in conjunction with an adjustable residence time, increases the IV to the desired level while in the vacuum. This ap- proach, which does not require a maintenance-
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Gneuss Filtration Technology has introduced an additional filter size across its line of Rotary Filtration systems to ensure an optimised and cost-efficient filtration solution for a wider range of applications. The new size 110 filter is available for the company’s RSFgenius, SFXmagnus, SFneos and CSFprimus filtration technology. It offers almost 20% more active screen area than the size 90. Gneuss Rotary Filtration systems operate continuously and automatically and are said to be process and pressure constant. They are character- ised by a filter disk on which the screen cavities are arranged in a ring pattern. Screens can be changed on the part of the filter disk that is not actively in the melt channel, while the production process continues operating.
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.plasticsrecyclers.eu �
www.fimic.it �
www.maag.com �
www.witte-pumps.com �
www.nordson.com �
www.erema.com �
www.britas.de �
www.bbeng.de �
www.gneuss.com
IMAGE: GNEUSS
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