Jun 23, 2009. /Lesprom Network/. The rebuild of paper machine PM 4, including a Metso-supplied OptiDry Vertical impingement dryer, has been successfully started up at Steinbeis Papier Glückstadt GmbH & Co. KG in Germany on May 17, 2009, the company reported. Metso’s rebuild delivery included an OptiDry Vertical impingement dryer with a ropeless tail threading system. The new dryer gives additional drying capacity to increase the production capacity by 15 % and the machine speed by 175 m/min. The OptiDry Vertical is a rebuild concept to add drying capacity in the dryer section, thus enabling a production and speed increase without additional dryer cylinders. The unit can be installed in an existing dryer section without increasing the machine length, and with a minimal rebuild of the current dryer. The Steinbeis Papier 4.6-meter-wide PM 4 produces magazine papers for heat set web offset printing and multi-functional papers for office use, all from 100 % recovered paper, with a grammage range of 57–90 g/m2. Steinbeis Papier Glückstadt GmbH & Co. KG produces high-quality printing papers from 100 % recycled raw material. In 2008, the company received the German Sustainability Award as one of the three most sustainable companies in Germany. Metso is a global supplier of sustainable technology and services for mining, construction, power generation, automation, recycling and the pulp and paper industries.