Next generation Lindner shredder will clean our oceans • Recycling International

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Chile’s minister for the environment Carolina Schmidt visits Comberplast

Austrian technology supplier Lindner has developed the new Micromat HP shredder specially designed for shredding post-consumer and industrial film. ‘The very first machine in our next generation series has already been sold to a new client based in Chile,’ so Pia Maria Steiner tells Recycling International at the K Show this week.

‘This is a great start of the expo for us!’ Lindner’s marketing specialist reports at the plastics recycling event in Düsseldorf. She goes over the product specs during the daily live demonstration, which has attracted a large group of visitors on this rainy October day.

Lindner’s novel shredder is equipped with a direct belt drive that enables rotor speeds of over 300 rpm. As a result, it can produce up to 2.5 times more output than the previous version in this area of application. Steiner notes that the rotor length is 1500 mm – meaning that a much requested entry-level model from the Micromat series has been created.

Goodbye, ghost nets

‘Comberplast will use it to process discarded fishing nets,’ she adds. ‘This way, they can help clean up the oceans while converting what people consider “waste” into valuable products.’

Comberplast ceo Michel Compagnon is smiling from ear to ear as he shakes hands with the Lindner team at the press conference. ‘I cannot wait to take the machine home and take it into operation at our facility in Santiago,’ he says. The entrepreneur realises there is a lot of work to be done – ‘ghost nets’ represent over 10% of plastic ocean waste. In countries like Chile, where fishing is a major industry, the volume is significant.

A positive development is that there are currently 26 fishing communities involved in a nation-wide recycling scheme. Upwards of 185 tonnes of ghost nets have been collected for recycling since 2013. ‘By investing in modern technology, we can do even better,’ Compagnon comments. ‘Plastic doesn’t have to be the enemy,’ Steiner observes.

R&D finetuning has paid
off

According to Lindner, the shredder’s most innovative feature
is the new Multiplex cutting system. Thanks to the three-dimensional
arrangement of the rotor knives, this advanced system can shred almost any
plastic. As a result of the knives actively pulling in the material, output can
be increased by some 40% on average compared to previous technologies.

‘During development, we tested a wide range of materials
together with our clients and optimised this cutting system’s geometry to cover
as many types of plastic as possible,’ says Stefan Scheiflinger-Ehrenwert, Head
of Product Management at Lindner. ‘The long-term test finally revealed
that the new Multiplex rotor not only increases the throughput enormously, but
in some cases even multiplies it.’

Also, the new cutting system is able to ‘precisely’ cut plastics into flakes for cleaning, sorting and subsequent extrusion in just a single step. This is a significant advantage because it renders additional fine granulation unnecessary, thus reducing energy and investment costs.

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