paper machine

1. PrimePress
PULP & PAPER

2. • Vacuum suction on drive side to
make the felt and roll change easy
• No drive applied to the suction
pressure roll
• Hydraulic or pneumatic loading
PrimePress Single
General features
/ ANDRITZ (PULP & PAPER) / PrimePress / MAY 2018
2

3. PrimePress Single
Drive concept – felt tension
/ ANDRITZ (PULP & PAPER) / PrimePress / MAY 2018
3
12
19
10 11
6
1

4. 0,00
1,00
2,00
3,00
4,00
5,00
6,00
7,00
8,00
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Position Felt Run
Felt
Tension
[kN/m] (empty bars are fictive tensions)
Motor
Forming Roll
PrimePress Single
Drive concept – felt tension diagram
/ ANDRITZ (PULP & PAPER) / PrimePress / MAY 2018
4
Motor
Yankee
Motor
Felt Roll

5. • High quality shell of cast or welded
stainless steel
• Double spirally drilled hole pattern
• No inside support bearing due to DS
suction
• Conical fit of shell and deckle to ensure
frictional connection and centering
PrimePress Single
Suction pressure roll – design features
/ ANDRITZ (PULP & PAPER) / PrimePress / MAY 2018
5
TS FS
Yankee
felt
sheet/felt
DRILL PATTERN
A A

6. Precise removal of water from the suction roll - advantages for
• good post press dryness
• uniform moisture profile
• better felt uniformity resulting in higher coating uniformity and stability
PrimePress Single
Water tray double doctor
/ ANDRITZ (PULP & PAPER) / PrimePress / MAY 2018
6
water doctor
pneum. loaded
cleaning lance
Suction pressure
roll
Yankee
wiper

7. PrimePress Single
Roll change
/ ANDRITZ (PULP & PAPER) / PrimePress / MAY 2018
7