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| [Presentation title] | [Client Name] | [Date] 1 Paper technology Wood pulp / Bleaching (1) Technical Support Sappi Fine Paper Europe

Paper technology : wood pulp - bleaching 1

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Page 1: Paper technology : wood pulp - bleaching 1

| [Presentation title] | [Client Name] | [Date] 1

Paper technology

Wood pulp / Bleaching (1)

Technical Support

Sappi Fine Paper Europe

Page 2: Paper technology : wood pulp - bleaching 1

| [Presentation title] | [Client Name] | [Date] 2

Paper technology

From wood to coated paper

Page 3: Paper technology : wood pulp - bleaching 1

| [Presentation title] | [Client Name] | [Date] 3

Paper technology

PAPER

Fibrous substances / wood pulp Process materials Water

Page 4: Paper technology : wood pulp - bleaching 1

| [Presentation title] | [Client Name] | [Date] 4

Thinnings

Lumbering of a released stem Thinnings

Dispatch to the paper mill Diseased wood for paper production

Page 5: Paper technology : wood pulp - bleaching 1

| [Presentation title] | [Client Name] | [Date] 5

Wood trunk

Rind or bark

Bast

Annual rings

Cambium

Spring wood

Autumn wood one annual ring

Pith

Medullary ray

Heart wood

Splint wood

Page 6: Paper technology : wood pulp - bleaching 1

| [Presentation title] | [Client Name] | [Date] 6

Wood types

Eucalyptus

Poplar

Birch

Beech

Deciduous wood (approx. 20%)

Pine

Fir

Spruce

Coniferous wood (approx. 80%)

Types of wood for the paper production

Page 7: Paper technology : wood pulp - bleaching 1

| [Presentation title] | [Client Name] | [Date] 7

Wood types

Birch Poplar Beech Eucalyptus

Spruce Fir Pine

Page 8: Paper technology : wood pulp - bleaching 1

| [Presentation title] | [Client Name] | [Date] 8

Beech trunks

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| [Presentation title] | [Client Name] | [Date] 9

Slabs

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| [Presentation title] | [Client Name] | [Date] 10

Chips

Page 11: Paper technology : wood pulp - bleaching 1

| [Presentation title] | [Client Name] | [Date] 11

Pulping

MP Mechanical pulp

(mechanical pulp)

yield 90-96%

Mechanical

TMP Thermo-mechanical-

pulp

yield 90-96%

Thermo-mechanical

CTMP Chemi-thermo- mechanlcal-pulp

yield 85-90%

Chemi-

thermo-mechanical

Sulphate process

(alkali)

yield 43-52%

Sulphite process

(acid)

yield 43-52%

Chemical

Pulping process

Page 12: Paper technology : wood pulp - bleaching 1

| [Presentation title] | [Client Name] | [Date] 12

Wood preparation

Wood place

Round wood

feeding

system

Unbarking

Round wood

washing

Metal detector

Chipper

Chopped

Chips

Page 13: Paper technology : wood pulp - bleaching 1

| [Presentation title] | [Client Name] | [Date] 13

Unbarking drum

Page 14: Paper technology : wood pulp - bleaching 1

| [Presentation title] | [Client Name] | [Date] 14

Chopped chipper apparatus

Page 15: Paper technology : wood pulp - bleaching 1

| [Presentation title] | [Client Name] | [Date] 15

Chips