Crepe Monitoring Tools on Pilot Tissue Machine - TAPPI.org

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

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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

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