GRANULATORS | TECHNOLOGY
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Cumberland installed a turn-key recycling system for Save That Stuff combining shredding, granulation and metal separation
to keep up with the clothes hanger recycling application. “We needed to update our older equipment to handle this job,” he says. “We also have wanted to increase our plastics recycling capabilities, so we can take on additional projects.” After meeting with STS to discuss its needs, the
Size Reduction team at Cumberland worked on the designing of a specialised, turnkey system that not only handles the clothes hanger project, but can be used for a wide variety of other plastics recycling applications. STS also has orders for recycling HDPE crate-grade material. The system that Cumberland designed for STS consists of a heavy-duty Vecoplan single-shaft shredder, a Cumberland granulator, and a Sterling Blower elutriation system. “We often partner with Vecoplan to sell their shredding equipment along with our Cumberland granulators,” says Joe Platek, Business Development Manager at Cumberland. “This provides a total package solution for our customers.” The turnkey system is designed for up to 2,000
lbs/hr throughput. Clothes hangers are fed into the shredder, which shreds and feeds the material on a conveyor to the Cumberland granulator, which then grinds the material to pellet size and is evacuated by the Sterling Blower system. The elutriator is able to separate the fines from the quality, clean regrind and provides a collection point for both material streams. Cumberland says that a unique part of its machinery is the integration of a magnetic system that catches and separates the metal clips from the shredded plastic hangers. Located on a conveyor between the Vecoplan shredder and the Cumberland granulator, the system magnetically removes all metal from the plastic stream. This critical step ensures that the plastic that enters the granulator is free of metal contaminants, resulting
www.plasticsrecyclingworld.com
in higher quality regrind. Herbold Meckesheim recently launched
several new technical developments regarding its SB series of granulators. The SML 60/100 SB 2 is suitable for wet opera- tion with horizontal forced feeding by means of screw conveyors, which allows space-saving installations and easy feeding. Another advantage is the high throughput capacity due to a 1 m-wide inlet from the hopper and 50 cm strong feeding screws transporting material to the rotor. Seven rotor knives and an optional third stator knife allow up to 21 cuts per revolve meaning the SB mill can process up to 2 tonnes of polyolefins per hour or well over 1 tonne of film. In addition to the high throughput capacity, SB
granulators are characterised by uniform load absorption and low energy consumption. In line with market trends, a significant focus was placed on safety aspects and ease of maintenance with the design ensuring the feeding device and hopper can be hydraulically swung away in one piece to open the housing. The case cover with the stator knives opens in the opposite direction, and the knives with the pressure bar are equipped with a lifting device. The discharge trough is also easily accessible, and the rubber rings of the machine’s ground plate feet effectively absorb vibrations which is reflected in lower noise emissions.
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.cmg-granulators.com �
www.neue-herbold.com �
www.rapidgranulator.com �
https://weima.com �
www.hosokawa-alpine.com �
www.cumberlandplastics.com �
www.herbold.com
September 2023 | PLASTICS RECYCLING WORLD 43
IMAGE: CUMBERLAND
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