Valmet Paper machine Trimmed witdth 8,26 m
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- Product ID: VAK11230
- Name: Valmet Paper machine Trimmed witdth 8,26 m
BASIC INFOMATION
Start- up 1987 Valmet
Product LWC
Production capacity 270 000 tons/year
Av. basis weight 52,1 g/m2
Trimmed witdth 8,26 m
Speed 1650 m/min
Two Valmet JR-1000 winders
-Start up in 1987
-1st online coated LWC-line,
-web width: 8,35m, speed: 1650m/min, basis weight: 39 – 65 g/m2
-Major rebuilds;
-1997; HHS Cap Former + 3rd dryer group converted to single tier
-2003; Opti Blade coating stations
-2004; Loadable Blade Former
-2006; Winder modernization, capability to produce Super Jumbo Reels (up to 4,32m / 8 tons)
-2013; Single tier conversion of dryer 7th group + press section frame rebuild
-2017; Press rebuild 2nd phase + single tier conversion of 4th dryer group
Short circulation
- Thick stock feed pump and flow control into short circulation
–Max flowrate 280 l/s
- White water pit
–Volume 100m3
- Mixing pump
–Max flowrate 2750 l/s
- Centrifugal cleaners, 7 stages
–Ahlström Twincleaner 133
- Deculator
- Headbox feed pump
–Max flowrate 2655 l/s
- Machine screens, 3 pcs
–JS-400-LC2M, 55kW
–Pulp consistency 1,5%
–1,6mm hole screen
- Reject screen
–Voith GR 20
–0,2mm slotted screen
Headbox and wire section
- Valmet SymFlow HHS headbox
‒4 wanes
- Valmet HHS OptiFormer
‒Forming roll, suction zone 20 degrees
‒Preloading blade and four loadable blades (bottom wire side)
‒Suction unit with three zones (upper wire side)
‒Wet suction box with two zones (bottom wire side)
‒Flat suction boxes, 4 pcs
‒Hivac suction box
‒Wire suction roll
‒Trim squirts after the suction roll
‒Upper wire HP –shower and mist removal box
‒Bottom wire HP –shower and mist removal box
‒Upper wire mist removal with centrifugal blower
‒Bottom wire mist removal with centrifugal blower
Press section:
- Valmet SymPress II
‒Linear loads 90/110/135 kN/m
‒PickUp –roll; new suction box
‒Press Suction Roll; duplock shell
‒1st Press Sym Roll
‒3rd Press Sym Roll; Sym ZS –roll
‒Devronizer D5A -steam box
‒PickUp –felt; HP shower and 2 uhle boxes
‒1st press –felt; HP shower and 1 uhle boxes
‒3rd press –felt; HP shower and 1 uhle boxes
Pre-dryer section
- 6 dryer groups and 4 steam groups (36 drying cylinders)
‒PressRun suction roll
‒1st, 2nd and 3rd groups in single tier equipped with HiRun –runnability concept
‒4th group in single tier equipped with UnoRun –runnability concept (not right in picture)
‒5th and 6th groups in double tier and rope tail threading
Breaker stack calender and coating stations
- Breaker stack calender
‒Honeywell Calcoil -induction thickness control
- 1st coating station; Valmet Opticoat -short dwell station
‒Honeywell ProCoat -automatic profile control
‒Coating colour screening: 3pce Jylhä-Raisio LS60 screens, 0,15mm slotted screens
‒Two IR/CR -dryers and one IR -dryer
‒Steam heated single tier drying group (8 drying cylinders)
‒FoilForce / rope -tail threading with DoubleJet –water cutting
- 2nd coating station; Valmet Opticoat -short dwell station
‒Honeywell ProCoat -automatic profile control
‒Coating colour screening: 3pce Jylhä-Raisio LS60 screens, 0,15mm slotted screens
‒One IR/CR -dryers and one IR -dryer
‒Steam heated single tier drying group (9 drying cylinders)
‒FoilForce / rope -tail threading with DoubleJet –water cutting