FI74051C - Foerfarande foer behandling av mekanisk massa foer att foerbaettra dess draeneringsfoermaoga och vaottoejning. - Google Patents

Foerfarande foer behandling av mekanisk massa foer att foerbaettra dess draeneringsfoermaoga och vaottoejning. Download PDF

Info

Publication number
FI74051C
FI74051C FI783200A FI783200A FI74051C FI 74051 C FI74051 C FI 74051C FI 783200 A FI783200 A FI 783200A FI 783200 A FI783200 A FI 783200A FI 74051 C FI74051 C FI 74051C
Authority
FI
Finland
Prior art keywords
pulp
wood chips
weight
dewatering
improve
Prior art date
Application number
FI783200A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI783200A (fi
FI74051B (fi
Inventor
Adrian John Barnet
Alan C Shaw
Charles Donald Logan
Original Assignee
Qns Paper
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 Qns Paper filed Critical Qns Paper
Publication of FI783200A publication Critical patent/FI783200A/fi
Application granted granted Critical
Publication of FI74051B publication Critical patent/FI74051B/fi
Publication of FI74051C publication Critical patent/FI74051C/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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
    • D21C3/022—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes in presence of S-containing compounds
    • 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
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/001—Modification of pulp properties
    • D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
    • D21C9/004—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives inorganic compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
FI783200A 1977-10-25 1978-10-20 Foerfarande foer behandling av mekanisk massa foer att foerbaettra dess draeneringsfoermaoga och vaottoejning. FI74051C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA289427 1977-10-25
CA289,427A CA1071805A (fr) 1977-10-25 1977-10-25 Amelioration des proprietes d'egouttement et d'allongement a l'etat humide de la pate mecanique

Publications (3)

Publication Number Publication Date
FI783200A FI783200A (fi) 1979-04-26
FI74051B FI74051B (fi) 1987-08-31
FI74051C true FI74051C (fi) 1988-11-28

Family

ID=4109848

Family Applications (1)

Application Number Title Priority Date Filing Date
FI783200A FI74051C (fi) 1977-10-25 1978-10-20 Foerfarande foer behandling av mekanisk massa foer att foerbaettra dess draeneringsfoermaoga och vaottoejning.

Country Status (3)

Country Link
JP (1) JPS5473902A (fr)
CA (1) CA1071805A (fr)
FI (1) FI74051C (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4502918A (en) * 1981-06-10 1985-03-05 Macmillan Bloedel Limited Two-stage chemical treatment of mechanical wood pulp with sodium sulfite
US4708771A (en) * 1984-12-31 1987-11-24 Bear Island Paper Company Two stage process for sulfonating mechanical pulp fibers
US4731160A (en) * 1986-03-19 1988-03-15 Kamyr, Inc. Drainage characteristics of mechanical pulp
US5169496A (en) * 1991-04-23 1992-12-08 International Paper Company Method of producing multi-ply paper and board products exhibiting increased stiffness

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3773610A (en) * 1970-12-11 1973-11-20 Bauer Bros Co Pressurized system for pulp refining including pressurized double disk treatment
JPS4838328A (fr) * 1971-09-17 1973-06-06
JPS5214322A (en) * 1975-07-25 1977-02-03 Hitachi Ltd Data processing unit
US4145246A (en) * 1976-07-19 1979-03-20 Crown Zellerbach Corporation Process for making high-strength, high-yield sulfite-modified thermomechanical pulp and a linerboard composition produced therefrom

Also Published As

Publication number Publication date
JPS5473902A (en) 1979-06-13
CA1071805A (fr) 1980-02-19
FI783200A (fi) 1979-04-26
JPS6247999B2 (fr) 1987-10-12
FI74051B (fi) 1987-08-31

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Legal Events

Date Code Title Description
MM Patent lapsed
MM Patent lapsed

Owner name: Q.N.S. PAPER COMPANY LIMITED