CA1145107A - Methode de raffinage des pates a papier - Google Patents

Methode de raffinage des pates a papier

Info

Publication number
CA1145107A
CA1145107A CA000356028A CA356028A CA1145107A CA 1145107 A CA1145107 A CA 1145107A CA 000356028 A CA000356028 A CA 000356028A CA 356028 A CA356028 A CA 356028A CA 1145107 A CA1145107 A CA 1145107A
Authority
CA
Canada
Prior art keywords
pulp
treatment
temperature
weight
mechanical
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
CA000356028A
Other languages
English (en)
Inventor
Adrian J. Barnet
C. Donald Logan
Alan C. Shaw
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.)
Qns Paper Co Ltd
Original Assignee
Qns 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 Qns Paper Co Ltd filed Critical Qns Paper Co Ltd
Application granted granted Critical
Publication of CA1145107A publication Critical patent/CA1145107A/fr
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
    • D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
    • D21C3/06—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites

Landscapes

  • Paper (AREA)
CA000356028A 1979-12-17 1980-07-31 Methode de raffinage des pates a papier Expired CA1145107A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10466879A 1979-12-17 1979-12-17
US104,668 1979-12-17

Publications (1)

Publication Number Publication Date
CA1145107A true CA1145107A (fr) 1983-04-26

Family

ID=22301732

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000356028A Expired CA1145107A (fr) 1979-12-17 1980-07-31 Methode de raffinage des pates a papier

Country Status (9)

Country Link
EP (1) EP0030778B1 (fr)
JP (1) JPS5691093A (fr)
AU (1) AU531907B2 (fr)
BR (1) BR8005950A (fr)
CA (1) CA1145107A (fr)
DE (1) DE3064270D1 (fr)
FI (1) FI71779C (fr)
MX (1) MX156081A (fr)
NZ (1) NZ194407A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4718980A (en) * 1985-12-30 1988-01-12 Weyerhaeuser Company Interstage treatment of mechanical pulp
US4789429A (en) * 1985-11-06 1988-12-06 Sunds Defibrator Aktiebolag Method of making mechanical pulp

Families Citing this family (5)

* 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
US5607546A (en) * 1990-02-13 1997-03-04 Molnlycke Ab CTMP-process
SE466060C (sv) 1990-02-13 1995-09-11 Moelnlycke Ab Absorberande kemitermomekanisk massa och framställning därav
AU4271596A (en) * 1995-12-19 1997-07-14 Kvaerner Hymac Inc. Process for treating refiner pulp
CA2243228A1 (fr) * 1997-07-17 1999-01-17 Donohue Inc. Preparation de pate de bois mecanique avec consommation reduite d'energie

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4789429A (en) * 1985-11-06 1988-12-06 Sunds Defibrator Aktiebolag Method of making mechanical pulp
US4718980A (en) * 1985-12-30 1988-01-12 Weyerhaeuser Company Interstage treatment of mechanical pulp

Also Published As

Publication number Publication date
AU531907B2 (en) 1983-09-08
EP0030778A1 (fr) 1981-06-24
FI802654A (fi) 1981-06-18
DE3064270D1 (en) 1983-08-25
EP0030778B1 (fr) 1983-07-20
FI71779B (fi) 1986-10-31
AU6046080A (en) 1981-06-25
FI71779C (fi) 1987-02-09
MX156081A (es) 1988-06-30
NZ194407A (en) 1983-02-15
JPS5691093A (en) 1981-07-23
BR8005950A (pt) 1981-06-23

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Legal Events

Date Code Title Description
MKEX Expiry