Crepe Monitoring Tools on Pilot Tissue Machine
Technology Forum and Poster Session at Tissue 2017
Daniel Ricard, FPInnovations
October 3-6, 2017
The Challenges • Conflicting properties and performance requirements • Cost and efficiency balance
• R&D needs
• On-line monitoring tools for creping operation and variability
• Measurement tools for tissue performance quantification
• Model for optimization
The Benefits • Identify unstable operating conditions
• Provide scientific values for modeling efforts
• Use to complement process and tissue properties data in improvement efforts
• Help to develop correlation between operation and tissue properties
▫ Absorption
▫ Bulk
▫ Softness
▫ Strength/Stretch
▫ Tissue Dust/Lint
Overall Approach
Target
Tissue
Product
Tissue
Structure ▫ Different Technologies
▫ Online Monitoring Tools
- Crepe Force
- Vibration
- Crepe Count
- Temperature
▫ Direct Comparison
▫ Structure Analysis
▫ Modeling
Process Improvements
Online Monitoring Tools Setup On Pilot Tissue Machine
Tissue reel Winder drum
Yankee Dryer Roll
Crepe Force
Vibration
Crepe count
& Bulk
Sheet Temperature
Measuring Crepe Count Online
Measuring Blade (Holder) Vibration
Measuring Crepe Force
Utilizing Creping Sensors in Trials
Process Analysis
Tissue Making Process
Tissue Properties
Crepe Monitoring Tools on Pilot Tissue Machine
Technology Forum and Poster Session at Tissue 2017Daniel Ricard, FPInnovations
October 3‐6, 2017
The Challenges• Conflicting properties and performance requirements
– Softness, absorbency and bulk
– Tensile, stretch
– Dusting and linting
• Cost and efficiency balance – Fibre selection
– Creping blade wear monitoring and control
– Variability reduction
• R&D needs– On‐line monitoring tools for creping operation and variability
– Measurement tools for tissue performance quantification
– Model for optimization2
Target
TissueProduct
ProcessImprovements
TissueStructure
Tissue Making Process▫ Different Technologies▫ Online Monitoring Tools
- Crepe Force- Vibration- Crepe Count- Temperature
Tissue Properties▫ Absorption▫ Bulk▫ Softness▫ Strength/Stretch▫ Tissue Dust/Lint
Process Analysis▫ Direct Comparison▫ Structure Analysis▫ Modeling
Overall Approach
3
Online Monitoring Tools Setup On Pilot Tissue Machine
4
Tissue reelWinder drum
Yankee Dryer Roll
Crepe Force
Vibration
Crepe count& Bulk
Sheet Temperature
Measuring Blade (Holder) Vibration
5
New Blade
Creping Blade ON
Creping Blade OFFPaper & Chemical Package OFF
0 40 80 120 160Seconds
New BladeSame Blade Back On
Pocket angle
Measuring Crepe Force
6
Systems are complementary
Vibration sensors Crepe force sensors
Blade Usage + ++Creping Chemistry ++ +Pocket Angle / Geometry 0 ++Temperature/moisture + 0
Utilizing Creping Sensors in Trials• To quantify variability and diagnose operational issues• Concept Demonstrated: Understanding of what affects creping
performance
7
Monitoring Tissue Machine Stability
8
Release ALow dosage
Release AHigh dosage Release B
Stable operation Clogged release line
Tran
sitio
n
Tran
sitio
n
Measuring Crepe Count Online
9
Machine Direction Cross DirectionRearFront
LaserLine camera
Sheet
TechPap TSSA(Tissue Structure State Analyser)
Benefits of Monitoring Tools
• Identify unstable operating conditions
• Provide scientific values for modeling efforts
• Use to complement process and tissue properties data in improvement efforts
• Help to develop correlation between operation and tissue properties
10
