FI68432C - Foerfarande foer framstaellning av raffinerad traemassa. - Google Patents

Foerfarande foer framstaellning av raffinerad traemassa. Download PDF

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Publication number
FI68432C
FI68432C FI834576A FI834576A FI68432C FI 68432 C FI68432 C FI 68432C FI 834576 A FI834576 A FI 834576A FI 834576 A FI834576 A FI 834576A FI 68432 C FI68432 C FI 68432C
Authority
FI
Finland
Prior art keywords
chips
hardwood
pulp
softwood
pretreatment
Prior art date
Application number
FI834576A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI834576A0 (fi
FI68432B (fi
Inventor
Pekka Rahkila
Original Assignee
Yhtyneet Paperitehtaat Oy
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 Yhtyneet Paperitehtaat Oy filed Critical Yhtyneet Paperitehtaat Oy
Priority to FI834576A priority Critical patent/FI68432C/fi
Publication of FI834576A0 publication Critical patent/FI834576A0/fi
Priority to FR8418875A priority patent/FR2556376B1/fr
Priority to CA000469917A priority patent/CA1230709A/fr
Priority to SU843829103A priority patent/SU1524815A3/ru
Publication of FI68432B publication Critical patent/FI68432B/fi
Application granted granted Critical
Publication of FI68432C publication Critical patent/FI68432C/fi

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • 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
    • D21B1/021—Pretreatment of the raw materials by chemical or physical means by chemical means

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
FI834576A 1983-12-13 1983-12-13 Foerfarande foer framstaellning av raffinerad traemassa. FI68432C (fi)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FI834576A FI68432C (fi) 1983-12-13 1983-12-13 Foerfarande foer framstaellning av raffinerad traemassa.
FR8418875A FR2556376B1 (fr) 1983-12-13 1984-12-11 Procede pour produire de la pate de bois broye affinee
CA000469917A CA1230709A (fr) 1983-12-13 1984-12-12 Production de pate de bois affinee
SU843829103A SU1524815A3 (ru) 1983-12-13 1984-12-12 Способ получени рафинированной древесной массы из щепы

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI834576A FI68432C (fi) 1983-12-13 1983-12-13 Foerfarande foer framstaellning av raffinerad traemassa.
FI834576 1983-12-13

Publications (3)

Publication Number Publication Date
FI834576A0 FI834576A0 (fi) 1983-12-13
FI68432B FI68432B (fi) 1985-05-31
FI68432C true FI68432C (fi) 1987-01-19

Family

ID=8518210

Family Applications (1)

Application Number Title Priority Date Filing Date
FI834576A FI68432C (fi) 1983-12-13 1983-12-13 Foerfarande foer framstaellning av raffinerad traemassa.

Country Status (4)

Country Link
CA (1) CA1230709A (fr)
FI (1) FI68432C (fr)
FR (1) FR2556376B1 (fr)
SU (1) SU1524815A3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2723598B1 (fr) * 1994-08-10 1996-10-18 Sorgho Agro Ind Et Papetier Sa Procede de demoellage de plantes a moelle, en particulier sorgho, en vue d'obtenir des fibres de qualite papetiere

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1022145A (fr) * 1950-07-18 1953-02-27 Hellefors Bruks Aktiebolag Procédé de fabrication de plaques, carton, papier, corps moulés et analogues à partir de matière fibreuse végétale
SE416481B (sv) * 1977-05-02 1981-01-05 Mo Och Domsjoe Ab Fofarande och anordning for behandling av vedflis for avlegsnande av tungmetaller och harts

Also Published As

Publication number Publication date
CA1230709A (fr) 1987-12-29
FI834576A0 (fi) 1983-12-13
FR2556376A1 (fr) 1985-06-14
SU1524815A3 (ru) 1989-11-23
FI68432B (fi) 1985-05-31
FR2556376B1 (fr) 1989-12-22

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Legal Events

Date Code Title Description
MM Patent lapsed
MM Patent lapsed

Owner name: YHTYNEET PAPERITEHTAAT OY JYLHAEVAARA