| Updated Second Edition (2008)
Edited by Hannu Paulapuro, Helsinki University of Technology, Finland
ISBN 978-952-5216-25-7
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Content:
CHAPTER 1. MILL OPERATIONS IN THE PRODUCTION OF
MAIN PAPER AND BOARD GRADES - AN
OVERVIEW
1.1 Introduction
1.2 Paper mill structure
1.3 Various technical concepts
1.4 Mill organisation
1.5 Trends
CHAPTER 2. HISTORY OF PAPERMAKING
2.1 Pre-paper era
2.2 Entering the paper age
2.3 Development of machines for papermaking
2.4 Technical development – but faster decay of the product
CHAPTER 3. SLUSHING AND DEFIBRATION OF PULP IN
THE PAPER MILL
3.1 Bale handling
3.2 Slushing
3.3 Wet storage
3.4 Defibration (Defibering, deflaking, or disintegration)
3.5 Evaluation of the slushing and deflaking result
CHAPTER 4. REFINING OF CHEMICAL PULP FIBRES
4.1 Introduction
4.2 Fibre structural changes
4.3 Historical development of refining
4.4 Fibre-water suspension in low-consistency refining
4.5 Modern low-consistency refiners
4.6 Control and characterisation of a low-consistency refiner
4.7 Refining as part of stock approach system
4.8 High-consistency refining
4.9 Operation of low-consistency refiners
4.10 Energy consumption in low-consistency refining
4.11 Application of enzymes prior to refining
4.12 Summary
CHAPTER 5. STOCK AND WATER SYSTEMS OF THE
PAPER MACHINE
5.1 Definitions
5.2 Design principles
5.3 Stock flow operations
5.4 Broke system
5.5 Fibre recovery and water clarification
5.6 Mill water systems
5.7 Novel approaches and possible future
CHAPTER 6. WEB FORMING
6.1 Grammage variability
6.2 Headboxes
6.3 Wire sections
CHAPTER 7. AIR FORMING
7.1 Introduction
7.2 Furnish composition
7.3 Process
7.4 Air-laid forming heads
7.5 Features of air-laid forming
7.6 Strength of air-laid network
7.7 Bonding of dry air-laid web
7.8 Future development of air-laid process
CHAPTER 8. FORMING FABRICS
8.1 Function of forming fabric
8.2 Classification of forming fabrics
8.3 SSB forming fabrics
8.4 Properties of forming fabrics having an influence on the papermaking process
8.5 Forming fabrics for different former types by paper grade
8.6 Keeping forming fabrics clean
8.7 Forming fabrics on paper machine
CHAPTER 9. WET PRESSING
9.1 Introduction
9.2 History and past developments
9.3 Fundamentals of wet pressing
9.4 Modeling of wet pressing
9.5 Wet pressing variables and their affects
9.6 Runnability and web transfer
9.7 Different types of press section
9.8 Innovative pressing/drying techniques
CHAPTER 10. PRESS FABRICS
10.1 Press felts
10.2 The press felt as a part of the wet pressing process
10.3 Shoe press belts
10.4 Closed transfer and transfer belts
CHAPTER 11. PAPER MACHINE ROLLS
11.1 Introduction
11.2 Lead rolls
11.3 Suction and forming rolls
11.4 Deflection-compensated rolls
11.5 Centre rolls
11.6 Grooved and drilled press rolls
11.7 Calender rolls
CHAPTER 12. VACUUM SYSTEMS
12.1 Introduction to high-vacuum dewatering
12.2 Effect of process variables
12.3 Paper and board grades
12.4 Modelling of vacuum dewatering
12.5 Optimisation of vacuum profiles
12.6 Vacuum dewatering curves
12.7 An empirical model for vacuum dewatering
12.8 Effect of furnish type on dewatering equations
12.9 Calculation of dewatering profile
12.10 A case study
12.11 Closing remarks
CHAPTER 13. VACUUM PUMPS
13.1 Types
13.2 Vacuum piping
13.3 Noise
13.4 Instrumentation
13.5 Electrical
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