CASE EXAMPLE
| Full-scale tissue machine trial 01/2018
BACKGROUND INFORMATION - - - -
Grade: Toilet paper Speed: 1950 m/min Production rate: 4 t/h Type: Crescent Former
- Furnish: 100% virgin pulp (50% long fibres/50% short fibres) - Chemical additives in use: PAM/PEI/CMC
TARGET: 1
- Improvements in softness and retention - Reduction of dusting (increase of surface strength)
Strength CD strength CD index (N/g)
PAM l/h
PEI l/h
CMC kg/t
Strength CD index [N/g]
5,5 5 4,5
5,0 max value for strength MD
4,0 3,0
4 3,5
6,0
min value for strength MD
2,0
3 1,0
2,5 2
0,0 0,0 0,0 3,4 3,4 4,3 4,3 4,3 4,3 4,3 4,3 4,3 4,3 4,3 4,3 4,3 5,4 5,4 4,3 4,3 4,3
PAM, PEI, CMC dosing amount
6
0,0
PrimeBOND 115 dosing amount [kg/t]
2
Strength MD strength MD index (N/g)
PAM l/h
PEI l/h
CMC kg/t
Strength MD index [N/g]
10 9,5
5,0
max value for strength MD
4,0
9 8,5
3,0
8
2,0
7,5 7
6,0
min value for strength MD
1,0
PAM, PEI, CMC dosing amount
10,5
Both CD and MD Strength are maintained on a good level without PAM, PEI and CMC. The strength remains within an acceptable level even when the proportion of short fibre is increased from 50% to 60% (light grey circle).
6,5 6
0,0 0,0 0,0 3,4 3,4 4,3 4,3 4,3 4,3 4,3 4,3 4,3 4,3 4,3 4,3 4,3 5,4 5,4 4,3 4,3 4,3
0,0
PrimeBOND 115 dosing amount [kg/t]
3
Prolongation
Prolongation index
1,3 1,2 1,1 1
strength MD index (N/g)
PAM l/h
PEI l/h
CMC kg/t
6,0 5,0
max value for strength MD
4,0 min value for strength MD
3,0
0,9
2,0
0,8 0,7
1,0
PAM, PEI, CMC dosing amount
1,5 1,4
Improvement of the prolongation index and maintaining an acceptable level despite leaving out PAM, PEI and CMC and/ or increasing the proportion of short fibre from 50% to 60% (light grey circle).
0,6 0,5
0,0 0,0 0,0 3,4 3,4 4,3 4,3 4,3 4,3 4,3 4,3 4,3 4,3 4,3 4,3 4,3 5,4 5,4 4,3 4,3 4,3
0,0
PrimeBOND 115 dosing amount [kg/t]
CHEMIGATE THE BRIDGE 2018 17