SE9703451D0 - Process for producing raw material for pulp - Google Patents

Process for producing raw material for pulp

Info

Publication number
SE9703451D0
SE9703451D0 SE9703451A SE9703451A SE9703451D0 SE 9703451 D0 SE9703451 D0 SE 9703451D0 SE 9703451 A SE9703451 A SE 9703451A SE 9703451 A SE9703451 A SE 9703451A SE 9703451 D0 SE9703451 D0 SE 9703451D0
Authority
SE
Sweden
Prior art keywords
pulp
splits
wood
raw material
produce
Prior art date
Application number
SE9703451A
Other languages
Swedish (sv)
Other versions
SE508323C2 (en
SE9703451L (en
Inventor
Eric Rothfjell
Original Assignee
Eric Rothfjell
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eric Rothfjell filed Critical Eric Rothfjell
Priority to SE9703451A priority Critical patent/SE9703451L/en
Publication of SE9703451D0 publication Critical patent/SE9703451D0/en
Priority to PCT/SE1998/001707 priority patent/WO1999015728A1/en
Priority to AU92903/98A priority patent/AU9290398A/en
Publication of SE508323C2 publication Critical patent/SE508323C2/en
Publication of SE9703451L publication Critical patent/SE9703451L/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/02—Pretreatment of the raw materials by chemical or physical means
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/02—Pretreatment of the raw materials by chemical or physical means
    • D21B1/023—Cleaning wood chips or other raw materials

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Abstract

A method of producing paper-pulp raw material, where disintegrated pulp wood is cooked in a cellulose digester with caustic soda, or in some corresponding cooking process, to produce paper pulp, or wherein said pulp wood is ground to produce groundwood pulp. The invention is characterised in that the raw material is comprised of pulp wood splits (15) which are produced by splitting the wood in its axial direction with the aid of a wood splitter, with the fibres lying essentially in the plane of the split; in that the splits (15) are given a thickness of about 3-10 millimetres; and in that the splits are passed between several mutually sequential rolls (17-20; 27-29) such as to bend or flex said splits forwards and backwards and therewith cause knots present in said splits to fall therefrom.
SE9703451A 1997-09-24 1997-09-24 Process for producing raw material for pulp SE9703451L (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE9703451A SE9703451L (en) 1997-09-24 1997-09-24 Process for producing raw material for pulp
PCT/SE1998/001707 WO1999015728A1 (en) 1997-09-24 1998-09-23 A methdo of producing paper-pulp raw materials
AU92903/98A AU9290398A (en) 1997-09-24 1998-09-23 A methdo of producing paper-pulp raw materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9703451A SE9703451L (en) 1997-09-24 1997-09-24 Process for producing raw material for pulp

Publications (3)

Publication Number Publication Date
SE9703451D0 true SE9703451D0 (en) 1997-09-24
SE508323C2 SE508323C2 (en) 1998-09-28
SE9703451L SE9703451L (en) 1998-09-28

Family

ID=20408359

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9703451A SE9703451L (en) 1997-09-24 1997-09-24 Process for producing raw material for pulp

Country Status (3)

Country Link
AU (1) AU9290398A (en)
SE (1) SE9703451L (en)
WO (1) WO1999015728A1 (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1361803A (en) * 1971-09-07 1974-07-30 Ord L R Method of producing dimensional lumber from small diameter logs

Also Published As

Publication number Publication date
SE508323C2 (en) 1998-09-28
SE9703451L (en) 1998-09-28
AU9290398A (en) 1999-04-12
WO1999015728A1 (en) 1999-04-01

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