process feature | Recycling
Lindner’s Rafter system offers gentle cleaning of contaminated plastic
This enables quick, direct access to the shredder rotor
provide economical, stabilisation for technically demanding, price-sensitive reprocessing markets. Earlier this year, the company presented details behind the development of the technology at the Antec conference in the USA. In tests, the company compared the performance of
the new stabilisers against existing products, using a variety of methods. After creating pellets containing the Baeropol RST,
Baerlocher researchers incorporated them into a cast film grade of LLDPE. “Multipass extrusion was carried out over five
passes to replicate the effets of industrial internal recycle and multiple heat/shear histories,” said the researchers in a paper presented at the event. Results showed that adding RST produced a
“dramatically improved performance in melt stability”. The researchers also determined that Baeropol RST
reduced the yellowness index when compared with standard formulations.
Open heart shredding Rapid Granulator says that its Raptor series of plastics shredders – introduced at K2016 – has a unique ‘open-hearted’ design.
and cutter chamber, which simplifies cleaning and servicing, says Rapid. The front door, hinged on the side, gives unrestricted access to the rotor and screen, which is mounted in the door. Once the door is open, the shredder hopper mounted on a rear hinge can be tilted back. Other features include its cutting system, a tilt-back hopper, and design for integrated granulation. “The Raptor series is a shredder and granulator hybrid with the shredder’s heavy-duty cutting technol- ogy combined with granulator features that make it easy to operate, service and clean,” said Bengt Rimark, sales and marketing director. The new Rafter system launched at K2016 by Lindner WashTech offers gentle cleaning of highly contaminated, pre-shredded plastic waste by removing extraneous material and pre-washing in a single step. There are three phases to the process. First, a
conveyor screw pulls the contaminated material under the water surface – allowing heavy contaminants to precipitate. Next, particles sticking to the plastic such as sand or soil are removed by a paddled rotor whose rotational speed can be adapted to the degree of contamination. This step is done in a stationary drum, and separates floating or precipitated particles using plate screens. After washing, the pre-cleaned waste rises to the surface and is delivered to subsequent process steps by a feed screw. The line, which has a nominal throughput of 1,500-2,500kg/h, can be used in conjunction with the company’s Micromat WS wet shredder.
Click on the links for more information: ❙
www.starlinger.com ❙
www.gneuss.com ❙
www.ngr.at ❙
www.baerlocher.com ❙
www.rapidgranulator.com ❙
www.lindner-washtech.com
BKG®
Filtration Systems
Our Recycling Revolution For Highly Contaminated Materials:
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BKG® HiCon™ R-Type 250 Filtration System
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EXTRAORDINARY TECHNOLOGIES FOR TODAY‘S PLASTICS
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