CA1071805A - Drainage and wet stretch improvement in mechanical pulps - Google Patents

Drainage and wet stretch improvement in mechanical pulps

Info

Publication number
CA1071805A
CA1071805A CA289,427A CA289427A CA1071805A CA 1071805 A CA1071805 A CA 1071805A CA 289427 A CA289427 A CA 289427A CA 1071805 A CA1071805 A CA 1071805A
Authority
CA
Canada
Prior art keywords
pulp
mechanical
drainage
sodium sulphite
pulps
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
CA289,427A
Other languages
English (en)
French (fr)
Inventor
C. Donald Logan
Alan C. Shaw
Adrian J. Barnet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ontario Paper Co Ltd
Original Assignee
Ontario Paper Co Ltd
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 Ontario Paper Co Ltd filed Critical Ontario Paper Co Ltd
Priority to CA289,427A priority Critical patent/CA1071805A/en
Priority to FI783200A priority patent/FI74051C/fi
Priority to JP13058378A priority patent/JPS5473902A/ja
Application granted granted Critical
Publication of CA1071805A publication Critical patent/CA1071805A/en
Expired legal-status Critical Current

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)
CA289,427A 1977-10-25 1977-10-25 Drainage and wet stretch improvement in mechanical pulps Expired CA1071805A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA289,427A CA1071805A (en) 1977-10-25 1977-10-25 Drainage and wet stretch improvement in mechanical pulps
FI783200A FI74051C (fi) 1977-10-25 1978-10-20 Foerfarande foer behandling av mekanisk massa foer att foerbaettra dess draeneringsfoermaoga och vaottoejning.
JP13058378A JPS5473902A (en) 1977-10-25 1978-10-25 Treatment of machined pulp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA289,427A CA1071805A (en) 1977-10-25 1977-10-25 Drainage and wet stretch improvement in mechanical pulps

Publications (1)

Publication Number Publication Date
CA1071805A true CA1071805A (en) 1980-02-19

Family

ID=4109848

Family Applications (1)

Application Number Title Priority Date Filing Date
CA289,427A Expired CA1071805A (en) 1977-10-25 1977-10-25 Drainage and wet stretch improvement in mechanical pulps

Country Status (3)

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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0096548A1 (en) * 1982-06-04 1983-12-21 Macmillan Bloedel Limited Two-stage chemical treatment of mechanical wood pulp
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
RU2224060C2 (ru) * 1999-09-10 2004-02-20 СТОРА КОППАРБЕРГС БЕРГСЛАГС АКТИЕБОЛАГ (публ) Способ производства древесной массы

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 (enExample) * 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

Cited By (7)

* 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
EP0096548A1 (en) * 1982-06-04 1983-12-21 Macmillan Bloedel Limited Two-stage chemical treatment of mechanical wood pulp
US4708771A (en) * 1984-12-31 1987-11-24 Bear Island Paper Company Two stage process for sulfonating mechanical pulp fibers
AU588006B2 (en) * 1984-12-31 1989-09-07 Bear Island Paper Company System and 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
RU2224060C2 (ru) * 1999-09-10 2004-02-20 СТОРА КОППАРБЕРГС БЕРГСЛАГС АКТИЕБОЛАГ (публ) Способ производства древесной массы

Also Published As

Publication number Publication date
FI74051C (fi) 1988-11-28
JPS5473902A (en) 1979-06-13
FI74051B (fi) 1987-08-31
JPS6247999B2 (enExample) 1987-10-12
FI783200A7 (fi) 1979-04-26

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Legal Events

Date Code Title Description
MKEX Expiry