MELT FILTRATION | MACHINERY
New melt filters respond to PCR demands
Melt filtration systems for post- consumer plastics need to deal with high levels of contamination and high
throughputs.Peter Mapleston reports on new technology in the market
Producers of equipment for filtering contaminated plastics are upping their game. There are numer- ous developments that will help recycling compa- nies deal with the high levels of contamination that are typical of post-consumer recyclate (PCR). And with PET being the most recycled of all plastics, it is no surprise that many of the developments are targeted at this material. NGA Group company BritAS unveiled its ABMF
PET-C melt filter for contaminated PET at the Fakuma 2021 plastics exhibition in Friedrichshafen, Germany, last October. The ABMF PET-C is an addition to the company’s ABMF series of auto- matic belt melt filters. Company CSO Thomas Lehner says it relies on established BritAS basic technology, but is equipped with special features and technically optimised. During each filter change, a clean screen mesh is inserted automati-
Main image: The Ettlinger ECO 350 melt filtration system has capacity up to 2,500 kg/h
cally and without production having to stop. Up to three screen belts can simultaneously be inserted, which allows an exact adjustment of different filter fineness. The new unit has a filter fineness of up to 20 µm and a claimed melt loss of less than 1.0%. BritAS says that while the main focus is on PET, it can also be used for low-viscosity plastics such as polyam- ides. “Especially for high levels of contamination, the ABMF PET-C is the perfect solution,” says Lehner. Lehner says the filter mechanics and control offer a fully-automatic, practical operation in double- cavity mode, which does not require any temporary storage of the melt. During the screen movement, the extruder does not have to be stopped. Output is ensured by the use of screen belts with Dutch weave mesh. “Operating costs of the melt filter are reduced due to the optimised interior of the ABMF PET-C as well as the re- designed heating,” the company says. The ABMF PET-C is available with a filter surface of up to 3,200 cm2
and a maximum
output ranging from 1,030 kg/h to 4,800 kg/h. Last June, Maag Group company Ettlinger, which specialises in continuously operating high performance melt filters, unveiled a new genera- tion of its ECO products for use in PET recycling. The company said new features take into account the need for systems with a higher product
www.plasticsrecyclingworld.com March/April 2022 | PLASTICS RECYCLING WORLD 19
Left: The ABMF PET-C from BritAS
IMAGE: MAAG
IMAGE: BRITAS
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