Oil is de-watered, chemically treated, refined and filtered for re-use in various grades of base oils. Partly Sappi-patented processes at Alfeld and Ehingen Mills in Germany help to increase material efficiency. Coarse pigments from repulping internal broke are recovered from paper machine effluent and reprocessed to substitute virgin material. In addition, coating colour is also recovered from effluent and reprocessed.
Through in-house lean updates and internal brainstorming, Ehingen Mill in Germany reduced the amount of wrapping film used to cover pallets of paper for shipment. By lowering film thickness and optimising the wrapping processes in the finishing department, the mill reduced the amount of film used to pack paper pallets reading for shipping. The mill also introduced simple measures like cutting the protective wrapping film more precisely. This has saved 35.4 tons of film per year and reduced the volume of eventual waste for customers, without compromising pallet protection.