PM 3 was a Voith suction breast roll machine dated 1971 with grooved YD of 5000 mm dia. The machine featured a paper trim width at the reel of 5200 mm with a max running speed before the rebuild of 1400 mpm with a limitation on production of low basis weights.
The project target was mainly to increase the machine speed up to 2000 mpm maintaining the same trim width and to improve paper quality, making softer products, as well as the runnability and maintenance. The stock preparation system and the machine was upgraded in order to have possibility to manage products with different furnish.
Toscotec scope of supply includes an AHEAD 2.0 L crescent former with a multilayered headbox TT Headbox ML - T featuring Consistency Profiling, new felt run design in cantilevered solution, upgrade of the existing two presses configuration, new YD doctoring, tail threading system, full width turn up, TT Reel H+ with advanced solution on winding operations. Toscotec also supplied the rebuild of the stock preparation plant, new water system, the complete new approach flow system for double layers solution, shaft pulling and core handling system, upgrade of the steam & condensate system with innovative energy savings solution, electrification and control system. The project has been managed on the turn key basis by Toscotec providing also whole engineering services and erection. Start up has been completed according to the time schedule.
With this rebuild the machine in Mannheim will be one of the most modern conventional machines in Europe featuring technology that will allow to reduce energy and fibres consumptions and to produce high quality soft tissue.
The good cooperation between the Toscotec and SCA teams has driven the positive project result in a short time from paper to paper considering the high level of difficulties to manage such a kind of a major rebuild in an existing building .