Valmet 8.350 mm Paper Machine

PM2 start-up 1971
rebuild 1990 and 2004
product: uncoated magazine paper
Production capacity 290.000 tons
Basic weight range 44 – 57 g/m2
Width 8.35 m
Speed 1500 m/min
3 supercalenders
3 winders
Raw materials: groundwood pulp, thermomechanical pulp, chemical pulp and fillers
Headbox Valmet OptiFlo 2 with dilution profiling (2004)
Wire section Valmet OptiFormer LB (loadable blades) (2004)
Press section Valmet SymPress B with 4th press (1990/2004)
Shoe press in 3rd nip (2004)
Drying section Valmet SymDry (1990)
4 single tier drying groups, 2 double tier drying groups
Ropeless tail threading (1990/2004)
max designed structural speed of parts rebuild in 2004 is 1700m/min, parts from 1990 rebuild 1400m/min, drives build for 1550m/min, machines 24 hour production speed record is 1551m/min and avg. speed around 1500 m/min
Paper width at reel 8430mm, max trim capability at winder 8350mm
CD weight control with dilution valves 2004, Metso DNA. Moisture profiling at press section with Measurex-Devron steambox 1992 (57 control valves), at reeler with Voith Module Pro moisturiser 2007 (2014). PCS Honeywell TP Alcont. MxOpen QCS 2003. Siemens Drives system, Simoreg, Simovert. Web brake monitoring system and defect detection Procemex (WBS/WIS) 2015-18.
REBUILDS
Headbox Valmet OptiFlo 2 with dilution profiling (2004)
Wire section Valmet OptiFormer LB (loadable blades) (2004)
Press section Valmet SymPress B with 4th press (1990/2004), shoe press in 3rd nip (2004)
Drying section Valmet SymDry (1990), 4 single tier drying groups, 2 double tier drying groups, ropeless tail threading (1990/2004)
CD weight control with dilution valves 2004, Metso DNA.
Moisture profiling at press section with Measurex-Devron steambox 1992 (57 control valves), at reeler with Voith Module Pro moisturiser 2007 (2014).
PCS Honeywell TP Alcont. MxOpen QCS 2003.
Web brake monitoring system and defect detection Procemex (WBS/WIS) 2015-18.
Deculator-cleaner, rebuild by Ahlström in 1991 (semi-cascade), modified by Andrizt in 2009
Dilution water deaeration tank, Metso 2004
Machine screen by Metso in 2002, type TLA 1200 H
Dilution water screen, by Andritz in 2004, type ModuScreen HB3
Supercalanders, MCS by CLS engineering, S7 logic in 2013-2015
Winder 22 was modernized by Raumaster in 2015, automatic set change, new MCS logic change from S5 to S7, twin center drives to HD stations
Winders 3 and 4, build by Wärtsilä in 1980, KL 1000 / KL 1000 R, rebuild by Valmet in 1990 / 1989, WINBELT