The document discusses the finishing process for paper products. Finishing involves cutting paper to size, packaging it for customers, and applying identifying labels. Key steps include calendering to make the paper smooth, slitting large reels into smaller ones, reel packaging, sheet cutting, and packaging sheets or reams with labels. The goal is to prepare the paper according to customer specifications and protect it during transport and storage. Various machines such as calenders, slitters, cutters, and packaging equipment are used to complete the finishing steps.

1. Finishing
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2. Contents
1. Introduction 3
1.1. Finishing in the production process 4
1.2. Finishing installations 5
2. Calender 6
2.1. Effect on paper properties 7
2.2. Soft calender 8
2.3. Supercalender 10
2.4. Janus calender 13
3. Slitting 16
4. Reel packaging & labeling 19
5. Cutting 21
5.1. Schematic drawing 22
5.2. Slitter 23
5.3. Cutter 24
5.4. Braking section 25
5.5. Counting strips, 2-reel mounting, triple cut 26
6. Sheet packaging & pallet labeling 27
7. Reama & ream labels 29
8. Logistics 31
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3. 1. Introduction
(Finishing
• Definition:
– According to customer specifications, the paper is cut in reels or sheets
and packaged
• Purpose:
– Eliminating imperfections
– Dividing the paper into sales units
– Protecting the paper against climatic conditions, moisture etc.
– Marking the product with identifying labels
• Configuration criteria
– Sheets:
 Web direction: long grain, short grain
 Packaging: unreamed with or without counting strips, ream wrapped
 Pallett: height, weight, sheets
– Reels:
 Width, diameter, core, weight tolerance
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4. 1.1. Finishing in the production process
Finishing – making
the paper ready for
the customer
Coater (+ calender) – paper
improvement
Paper machine – paper
production (sheet formation)
Stock preparation – mixing the raw
materials, fillers, additives
Collecting
raw materials
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5. 1.2. Finishing installations
• Overview
– Calender (satination)
– Slitter-rewinder
– Reel packaging machine
– Sheet & ream packaging machine
Paper storage as an independent part of logistics
• Paper improvement
– Satination, just likecoating, can be part of the improvement process
– Online calender as part of the paper machine
Paper production Coating Satination Finishing
Paper improvement
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6. 2. Calender
• Purpose:
– Making the paper smooth (mechanical process) and glossy (optical property)
 Surface plasticizing
• Method:
– Physical processes – ironing effect - triggers
 Pressure (mechanical)
 Moisture exchange (hydrostatic)
 Thermal force – administering heat - convection
• Available components:
– Heated steel rolls, unheated paper rolls
– Heated steel rolls – unheated plastic rolls or rubber rolls
• Impacting parameters:
– Paper: temperature, humidity, surface mass, fibre material, fillers
– Coating: humidity, temperature, mass, binding agents, pigments
– Calender: roll temperature, roll roughness, roll surface, bending compensation, line
force, nip pressure, number of nips, dwell time, velocity
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7. 2.1. Effect on paper properties
• Advantages of calendering:
– Enhanced smoothness, enhanced gloss
– Decreased air permeability, decreased oil absorption
• Disadvantages of calendering:
– Increased density
– Decreased thickness, stiffness, opacity, whiteness, rub resistance
Base paper Coated paper + Calendered
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8. 2.2. Soft calender
Components: heated steel rolls, rubber or plastic rolls
 higher pressure, lower temperature
Plastic or
rubber rolls
Heated Paper web
steel rolls
Higher pressure – lower temperature
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9. 2.2.1. Soft calender
Pictures
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10. 2.3. Supercalender
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11. 2.3.1. Supercalender
Components: heated steel rolls and paper rolls
 low pressure, high temperature
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12. 2.3.2. Supercalender
Pictures
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13. 2.4. Janus calender
Components: heated steel rolls, paper rolls
 high pressure, high temperature
Steel roll Steel roll
Plastic roll Plastic roll
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14. 2.4.1 Janus calender
• Combined advantages of supercalender and soft calender
– High pressure, high temperature
• Additionally:
– Nip Protect System for fast and secure roll separation
– Special tool for easier roll changes
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15. 2.4.2 Janus calender
Pictures
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16. 3. Slitter
Knife
Daughter reels
Mother reel
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17. 3.1. Reel cutter
Secundary stations Daughter reels
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18. 3.2. Type - Vari Dur
Reel cutter
Mother reel Daughter reels
Support rolls
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19. 4. Reel packing installation
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20. 4.1. Reel label (Allegro)
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21. 5. Cutter
Overview
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22. 5.1. Schematic drawing
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23. 5.2. Slitter
Blade
Paper web
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24. 5.3. Cutter
Blade
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25. 5.4. Braking section
Fixing rolls
Paper web
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26. 5.5. Counting strips, 2-reel mounting, triple cut
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27. 6. Sheet packaging
Pressure beam
Label applied by robotic arm Pallet
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28. 6.1. Pallet label
Pallet label nr. 110
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29. 7. Ream
Wrapped reams in neutral packaging
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30. 7.1. Ream labels
Improved layout
Easier identification Label print
with emphasis on Black print on white label
brand, gsm & surface
Standard label size (210x12mm)
Already standard in most of Sappi’s
mills, this size enables safe handling
of XL format sizes throughout the
supply chain
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31. 8. Logistics
High shelves storage and truck transport
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32. Thank you
for your attention
Jörg Abelmann
32 Finishing Departement | Sappi Fine Paper Europe