BR8005950A - Processo de formacao de polpas de refinadora - Google Patents

Processo de formacao de polpas de refinadora

Info

Publication number
BR8005950A
BR8005950A BR8005950A BR8005950A BR8005950A BR 8005950 A BR8005950 A BR 8005950A BR 8005950 A BR8005950 A BR 8005950A BR 8005950 A BR8005950 A BR 8005950A BR 8005950 A BR8005950 A BR 8005950A
Authority
BR
Brazil
Prior art keywords
forming process
pulp forming
refining pulp
refining
pulp
Prior art date
Application number
BR8005950A
Other languages
English (en)
Inventor
C Logan
A Barnet
A Shaw
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
Publication of BR8005950A publication Critical patent/BR8005950A/pt

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
BR8005950A 1979-12-17 1980-09-17 Processo de formacao de polpas de refinadora BR8005950A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10466879A 1979-12-17 1979-12-17

Publications (1)

Publication Number Publication Date
BR8005950A true BR8005950A (pt) 1981-06-23

Family

ID=22301732

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8005950A BR8005950A (pt) 1979-12-17 1980-09-17 Processo de formacao de polpas de refinadora

Country Status (9)

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

Families Citing this family (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
SE456430B (sv) * 1985-11-06 1988-10-03 Sunds Defibrator Sett for framstellning av mekanisk massa
US4718980A (en) * 1985-12-30 1988-01-12 Weyerhaeuser Company Interstage treatment of mechanical pulp
SE466060C (sv) 1990-02-13 1995-09-11 Moelnlycke Ab Absorberande kemitermomekanisk massa och framställning därav
US5607546A (en) * 1990-02-13 1997-03-04 Molnlycke Ab CTMP-process
AU4271596A (en) * 1995-12-19 1997-07-14 Kvaerner Hymac Inc. Process for treating refiner pulp
CA2243228A1 (en) * 1997-07-17 1999-01-17 Donohue Inc. Preparation of mechanical wood pulps with reduced energy

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

Also Published As

Publication number Publication date
EP0030778B1 (en) 1983-07-20
FI71779B (fi) 1986-10-31
MX156081A (es) 1988-06-30
FI802654A (fi) 1981-06-18
JPS5691093A (en) 1981-07-23
AU531907B2 (en) 1983-09-08
FI71779C (fi) 1987-02-09
DE3064270D1 (en) 1983-08-25
AU6046080A (en) 1981-06-25
CA1145107A (en) 1983-04-26
NZ194407A (en) 1983-02-15
EP0030778A1 (en) 1981-06-24

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Legal Events

Date Code Title Description
MK Patent expired

Effective date: 19950917