MACHINERY | MELT FILTRATION
Right: Fimic installed this RAS500 melt filter with 35 mesh punched screen to process PP at US recycled compound producer Aaron Industries
ment is an increasingly common requirement in the sector today. Manufacturers of melt filters for highly contaminated plastics can no longer only afford to simply make standard machines, but must adapt them to each specific application, she says.
months depending on parameters.” Erema adds that the Laserfilter system incorpo-
rates a “Lock and Change” unit, which allows individual filters (Laserfilter systems can be supplied in Twin, Triple and Quattro variants) to be shut off for changes without interrupting produc- tion. The company also says that, because the melt fitration system is based on fixed screens, there are no inspection and maintenance issues relating from the use of rotating seals.
Right: Erema’s Powerfil
Laserfilter is said to provide benefits even in lightly contaminated applications
Film recycling Italian melt filtration firm FIMIC has developed a special screen changer for production of compounds from agricul- tural films. “Agricultural film is a complex material, not only for washing but also for extrusion and filtra- tion,” says Erica Canaia, Sales Director. “Everything that can be removed upstream, by high performance washing and efficient water treatment, will allow the extruder and the filter to work to the best of their abilities.” The company has now installed the third of
these agricultural film units to a producer locat- ed in Italy (the first two installations were for a customer in Mexico operating two reprocessing lines). In the latest project, the final application is production of garbage bags. One of the challenges in reprocessing of agricultural films is that each country has a different type of soil contamination, which is a major consideration in ensuring the most effective filtration. FIMIC says that its experience in Mexico allowed it to adapt the filter for the different type of contamination present for the Italian customer. Canaia explains that this need to adapt equip-
36 COMPOUNDING WORLD | July 2019
FIMIC melt filters are now available in two additional laser filtration models (laser drilled screens are said to provide finer filtration). It has recently added two more filtration levels: 120 microns (as an intermediate model between 100 and 150 microns) and 300 microns. It can also customise filter fineness according to the user’s requirements. In addition to the RAS-type melt filters, the company has also developed the ERA and TEN model, which is currently undergoing customer trials. The ERA melt filter provides direct filtration in two steps using only one melt filter. A feature of the design is that the laser screen, which is the most expensive element, is protected from damage by a less-costly punched screen. This arrangement increases the unit’s lifetime and means there is no need for a gear/melt pump and second melt filter. The TEN model is currently undergoing customer trials and is an adaptation of the company’s previous NET model. The company says the new TEN design will be commercially available by the end of this year. A further new melt filter will be introduced at the K show. BritAS Recycling-Anlagen has increased the filter surface of its ABMF 1600 automated belt melt filter by 50%. The company says that the increased filter surface both improves total output and allows processing of plastics waste with a higher degree of contamination, for example paper. The melt filter also has increased motor capacity for belt take-off and the belt magazine. BritAS filters are used in the post-consumer sector and for agricultural film waste, but also for post-industrial waste and by compounders.
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.gneuss.com �
www.nordsonpolymerprocessing.com �
www.cofit.com �
www.adgs.net �
www.ettlinger.com �
www.erema.com �
www.fimic.it �
www.britas.de
www.compoundingworld.com
PHOTO: EREMA
PHOTO: FIMIC
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