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Michelin – one of the world's leading tire manufacturers – says in its press release from February 23, 2021 that it is committed to making automotive tires 100% sustainable by 2050. This is an ambitious but realistic target for the Group, which positions itself as a leader in sustainable mobility. Appearances can be deceiving, the company says. This adage definitely applies to Michelin’s tires, which are high-technology products made of more than 200 components. They’re much more complex than they appear, which means that ensuring that all the tire’s components are sustainable presents a significant challenge.
Since it was founded in 1962, Maris, a manufacturer of co-rotating twin-screw extruders, has claimed one of the leading positions in the research of new state-of-the-art applications for its products. With the aim of providing its customers with the widest range of choices, every mechanical component of Maris’ extruders are entirely in-house manufactured. Maris says it’s one of the few companies in the world able to <b>customize its co-rotating twin-screw extruders according to its customers’ specific needs and this is true also when it comes to rubber devulcanization</b>. Rubber devulcanization is a selective breaking process of an elastomer S-S and C-S bonds, which produces only a limited degradation of the polymeric structure (C-C bond).
Today, tire recycling and cement industries are indeed intertwined. An abundance of scrap tires at specialized stockpiles, as well as well-organized tire collection systems and waste management plans, make it possible to (re)use precious rubber and create value out of waste. Tire-derived fuel (TDF) proves to be an alternative to fossil fuels used in cement production, mainly due to high calorific value of tire rubber and its low price. However, TDF emerged as a popular alternative to fossil fuels in cement production for yet another important reason – environment. Tire-derived fuel helps lower CO2 emissions and serves as a cleaner alternative compared to fossil fuels. Added to this, using scrap tires in cement production helps clean up vast scrap tire stockpiles, which otherwise pose threat to environment and which are often unsuitable as feedstock for tire recycling plants due to its exposure to radiation, sand or other contamination.