Pulp Paper & Logistics


PRODUCTS & SERVICES 25


Roll covers made from recycled and renewable raw materials


and recycled materials for board, paper, tissue and pulp making have been launched by Valmet. The new composite covers for


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press, guide and calender rolls are now available for customers in the paper industry. A bio-based resin and hardener in the polymer matrix is used to manufacture the roll covers. The reinforcing fibre and filler originate from recycled consumer plastic and glass. Depending on cover type, the content of recycled or bio-based raw materials is 75-96 per cent. New materials are being tested continuously, and the target is to reach 100 per cent as soon as possible. Valmet says it has set strict


criteria for the bio-based raw material in the covers. Only renewable materials derived from non-food chain plants or plant parts are used, in order to prevent the impact on global food production. Cultivation and


hat are claimed to be the world’s first roll covers based on biomaterials


of traditional roll covers has been manufactured from fossil-based materials, which has been refined and processed from crude oil. Valmet’s R&D work focuses


“In best cases, bio-based materials can be produced from plant parts that would otherwise be waste. For example, lignin, carbon black made of lignin and nanocellulose can be utilized as reinforcing fillers in roll covers,” explains Jani Turunen, R&D manager for polymeric roll covers at Valmet (right), pictured with Pertti Hytönen, R&D Engineer at Valmet


harvesting of plants must not endanger the growth of natural forests either. “In best cases, bio-based


materials can be produced from plant parts that would otherwise be waste. For example, lignin, carbon black made of lignin and nanocellulose can be utilised as reinforcing fillers in roll covers,” explains Jani Turunen, R&D manager for polymeric roll Covers


at Valmet. “Our customers do not have to compromise in product performance either, as the results have shown that in some applications the performance is even above the traditional offering.” Roll covers used in paper,


board, tissue and pulp making need periodical renewal and are therefore a significant consumable. A major part of the raw materials


Extra-large paper winders launched


A new high-capacity winding machine that accommodates much wider reels has been launched by A.Celli Paper. Two examples of the E-Wind P100H were demonstrated at the company’s factory at Lucca in Italy late last year.


The machine has been designed,


says A.Celli to manage reel widths up to 8 metres with diameters up to 3.8 metres and weighing about 65 tonnes. Efficient operation was a priority says A.Celli.


The winders are said to be ideal


for processing high-quality flat- papers and test-liner papers of the lowest basis weights, at speed of up to 2,500 metres per minute. Innovative features include a


Slittomatic dual-motor cutting unit positioning system and built-in automatic Spool-Parking. More information from A.Celli


Paper spa, Via del Rogio 17, 55012 Tassignano, Lucca, Italy. Tel: 39 0583 98441. Website: www.acelli.it


January/February 2020


strongly on enhancing raw material and energy efficiency and promoting the use of renewable raw materials. Valmet is continuously investigating the possibilities to replace fossil-based materials with renewable or recyclable materials. For example, recycling and more sustainable use of ceramic and metallic roll covers is under active research. Jukka Heikkinen, senior manager for Roll R&D at Valmet, commented: “Our continuous investing in R&D of sustainable solutions for our customers helps us increase the occupational safety of our employees, replace fossil-based raw materials with renewable ones, re-use and recycle materials and save energy. This is our contribution to the global challenge we face regarding our planet’s future. And by doing this, we are helping our customers do their part as well.”


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