Valmet-delivered, a completely new type of a sizer, OptiSizer Hard, with related chemical systems were successfully started up at Propapier PM1 GmbH Burg mill in Germany a day ahead of schedule on April 19, 2018. The production line PM1 produces liner, fluting and kraft substitutes grades based on 100% waste paper, as the company says in the press release received by Lesprom Network.
A prototype product and a very tight shut-down schedule is a challenging combination. Despite the initial setup, most of the targets were achieved right after the start-up. The web passed through the nip smoothly and runnability was excellent. The new technology shows already a great potential to achieve the goals regarding strength properties and steam consumption.
Valmet's delivery included a new sizer called OptiSizer Hard. Compared to conventional sizer, OptiSizer Hard has a pair of hard cover nip rolls. Starch is sprayed on the rolls which transfer the starch into the nip where it is further transferred into paper web.
With currently two paper factories (Propapier in Burg and Eisenhüttenstadt), a combined heat and power plant (Propower), ten corrugated board plants (Prowell) and several service companies (Prologistik, Proservice, Profund), Progroup's core business is the production of containerboard and corrugated board sheets.
Valmet is the leading global developer and supplier of process technologies, automation and services for the pulp, paper and energy industries.
