The fibre consists to 99% of water. It is transported from the pulper directly to the proportioning system. Here, filler and auxiliary substances are added to the mixture in accordance to the special formula. 2- or 3-stage. Flender gear units for pulper and bevel helical gear units are often used to drive the big pulpers.

Torques in a range between 23,800 and 470,000 Nm can be realized. The FLENDER gear units are well known for their outstanding product and manufacturing quality. Due to the high degree of standardization Flender gear units for pulper are soon available worldwide and offer an attractive price-performance-ratio.