1. Paper technology
Coating
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2. From wood to coated paper
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3. Coating components
Pigments:
Kaolin (clay), chalk, Binders:
titanium dioxide, talcum, Starches, Latex
synthetic pigments products
Process materials:
Co-binders, optical
brightener, toning Water
colours, wet strength
agents, anti-foaming
agent, ...
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4. Surfaces
The surface of a gloss paper Uncoated paper.
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5. Structure of the surface
Uncoated paper
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6. Calciumcarbonat
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7. Clay
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8. Caddy mill
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9. Observation point caddy mill
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10. CM 6 Ehingen
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11. Coating machine
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12. Blade coating process with application roll
1 Uncoated paper web
2 Coater counter-roll
3 Coating colour sump
4 Application roll for coating colour
5 Blade
6 Paper web, coated on one side
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13. Coater
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14. Coater
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15. Precoater
Paper
1 2 3
Coating layer
3
2 1
Application roll Distribution roll
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16. SDTA / LDTA-Coater
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17. Surfaces
Matt coated paper. Smooth and closed surface of a glossy,
The rough surface structure of such papers especially coated art paper.
is clearly visible.
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18. Surface structure
Matt coated surface
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19. Gloss reflection - Matt sample
Matt sample 0,3
0,2
Refl.
0,1
0,0
α1 α2 0 10 20 30 40 50 60 70
Angle α2 [degree]
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20. Gloss reflection - Semi-matt sample
0,3
Semi-matt sample
0,2
Refl.
0,1
0,0
α1 α2 0 10 20 30 40 50 60 70
Angle α2 [degree]
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21. Gloss reflection - Glossy sample
0,3
Glossy sample
0,2
Refl.
0,1
0,0
α1 α2 0 10 20 30 40 50 60 70
Angle α2 [degree]
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22. Cross-section of the paper
Top coating
Pre coating
Basis paper
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23. Compilation of the 135 gsm paper
Single - coated Double - coated Triple - coated
Basis – Paper 100 85 75
Pre – Coating (PM) 10
First – Coating (CM) 20 22
Top – Coating (CM) 35 30 28
Sum: g/m² 135 135 135
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24. Profil-Data
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25. Developed and maintained by Technical Support
Sappi Fine Paper Europe
Contacts:
Oliver Kropacek (project leader)
Corry Olejniczak (administrator GTL)
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