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Founded in 1960, Brückner Maschinenbau GmbH & Co. KG, Siegsdorf, today is the globally leading supplier of production lines for the manufacture of high-quality mono- and biaxially stretched film as well as extruded and smoothed flat film. Brückner Maschinenbau also provides complete turnkey plants as well as laboratory and pilot plants.

Today, approximately 600 Brückner film production lines are in operation all over the world. The customer list includes all the large and renowned international film producers. For many years S+S Separation and Sorting Technology GmbH, Schönberg, has maintained a customer and supplier relationship with Brückner. For decades Brückner has acquired metal separators from S+S for the inspection and purification of film raw materials (film shreds, ground material, and new material).

In the production of films the edges, which due to the production method are somewhat thicker, are cut off, creating long strips that are recycled in the company. For this purpose the film strips are ground in a mill, and the ground material is added to the starting material again. To guarantee the reliable removal of possibly included metal particles which, for example, might get into the material during the grinding process, the film flakes pass through metal separators before they are processed. Film stretching machines and extruders thus are reliably protected against damage caused by metal particles.

"In matters of metal separation, Brückner and S+S have been cooperating on partnership basis for decades. Brückner is satisfied with S+S because our metal separators are state-of-the-art in their technology and are of highest quality in their construction. Our systems operate reliably, reproducibly, and they amortise in a very short time because they prevent the causes of down-times and expensive repair work and thus guarantee optimal machine operating times and product quality", says Erwin Reitberger, S+S Branch Manager - Plastics Industry.