Full handling and recycling system for waste PVC has 18-month payback

Norway-based manufacturer of roofing foils and ventilation tubes for tunnels and mines, Protan, says a €1.2 million investment in an upgraded recycling facility to handle PVC production left-overs has paid for itself in 18 months.

The investment in the equipment from German size reduction specialist, Pallmann, sees Protan running a state-of-the-art, tailor-made three-in-one recycling installation for grinding, agglomerating and pulverising.

The company, which has an annual turnover of one billion Norwegian Crowns (€110 million/ £79 million), is one of the world’s largest manufacturers and suppliers of innovative roofs, membranes, technical textiles and ventilation systems. Every year, hundreds of kilometres of its ventilation pipes are installed in mines and tunnels around the globe - mainly in Europe, Africa and South America.

Protan wins most of its work - some 65 percent - from above ground applications, such as the fabrication of foils for roofs on office and industrial buildings. It is in its roofing products that Protan uses most of its recycled materials. On average, it incorporates six percent recyclate in its production process, most of which is sourced in-house. Owing to their complexity, it is difficult to dispose of or use these materials in other applications; however, the materials are of high value, making internal reuse worthwhile.

Protan started recycling two decades ago, when Pallmann installed a reconditioned PFV agglomerator in its plant in 2000. Over the years, this solution has become outdated, according to Tom Lillemoen, Protan’s Technical Manager.

“It became increasingly unsuitable for the products and recipes we were working with, and its capacity was no longer sufficient,” he explained. “On top of that, new products required new particle sizes, which could not be produced with the old technology.”

Pallmann ran an extensive test programme in Germany: existing material mixtures and new recipes and material compositions were all tried out before implementation. Grinding, agglomeration and pulverising tests were done at Pallmann’s large test centre at Zweibrücken, while the end products were tested on Protan’s production lines in Norway.

In the new facility, grinding is undertaken by Pallmann’s knife mill-type PS 4-7,5; agglomeration is carried out in a Plast agglomerator PFV 250; and a PolyGrinder PM 300 unit takes care of the pulverising. The machines are connected via conveying units, silos and collection units. Pallmann supplied and commissioned the entire package of components.