melt filtration | Technology Above:


Schematic of Nordson’s HiCon system


the R-Type melt filtration system are running success- fully, he says, include a European recycler of PP and PE which is approaching throughputs of 1,800 and 500 kg/h, respectively. One Nordson customer in the US has installed the HiCon R-Type system for recycling coloured HDPE flakes at a throughput rate of 1,200 kg/h. Schroed- er adds that a Chinese firm is installing a system for recycling post-consumer PS regrind, in-line with a strand pelletiser, which will run at a rate of 1,000 kg/h. Schroeder says: “In actual use, the HiCon R-Type


system has exhibited minimal wear to scrapers and reduced maintenance of filter elements, as originally claimed in our introduction of the product. Also minimised is the loss of polymer in the discharge of contaminant from the system. Since introducing the system, we have continued to subject it to a regime of performance testing and improvement.” Britas has also come up with an innovation in melt


filtration: a modular multi-head filter system that can be configured with two, three or four filters for continu- ous operation. The company, which is part of Next Generation Recycling group, unveiled the new Continu- ous Belt Melt Filter (CBMF) at K 2016. Friedrich Kastner, CEO of Britas, says: “With the modular design concept, we create completely new possibilities in melt filtration. Because, at buyer’s option, the CBMF can nearly be extended to any dimension – regardless of whether filter area size, combination and type of filter belts. The standard version of the CBMF consists of two filter modules but can later also be extended to a triple filter – CBMF 3 – or even to a quadruple filter – CBMF 4.” Britas supplies filters for the post-consumer recyclate


Right: Britas has developed the new CBMF modular multi-head


continuous belt filter system


sector, such as agricultural film waste, but also for post-industrial waste and for use by compounding companies. The company’s Chief Sales Officer,


Corné Verstraten, says: “The advantage for our customers is that they can configure their CBMF along their current requirements and if necessary, the filter can also be extended later.” The CBMF system is designed for


flexibility in various modules. In addition to the variable 28 PLASTICS RECYCLING WORLD | June 2017 www.plasticsrecyclingworld.com


number of filter heads, the filter areas per module range from 570 cm² up to 1,050 cm². So the combination of four modules results in total filter areas up to 4,200 cm², with an active filtration area of 3,150 cm². Britas recommends output ranging 2,520 – 5,040 kg/h for the 4,200 cm² filter setup. The system design ensures a continuous melt flow


via two separately selectable filter chambers, which, depending on the operating status, can be used alternately or in parallel. Britas says a continuous and fully-automatic operation is guaranteed by a new control unit together with a new linear belt take-off including cutting device. Heiko Henss, Plant Manager at Britas, says:


“Because of the modular design, of course, the arrangement of the filters has to be flexible. That means, the parallel filter assembly is reasonable [as a solution] in order to receive filter areas as large as possible. The arrangement in a line creates the option of multi-level filtration.” Britas also provides flexibility in the selection of the


screen belt magazine, with one, two, three or more magazines possible. Depending on the customer requirements, it also offers different materials, dimensions, weaves and tensile strength for the screen belts. The filtration fineness ranges from 50 microns to 950 microns. Britas has also been working on its established belt


filter technology. In March, it added a new size to its range of Automated Belt Melt Filters, the ABMF 1600 which is the largest yet, adding 50% more filter surface to its range. Previously the ABMF series was available with 570, 750 or 1,050 cm² filter areas, and now 1,600 cm² is available.


“With the ABMF 1600, we are completing our range


of products,” says Kastner. “This extension of our estab- lished and proven ABMF series was a necessary step for more throughput and improved filtration.” The increased filter surface not only improves output but also addresses a large degree of contamination in


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