NZ194407A - Three-step process for improving properties of mechanical wood pulps - Google Patents

Three-step process for improving properties of mechanical wood pulps

Info

Publication number
NZ194407A
NZ194407A NZ19440780A NZ19440780A NZ194407A NZ 194407 A NZ194407 A NZ 194407A NZ 19440780 A NZ19440780 A NZ 19440780A NZ 19440780 A NZ19440780 A NZ 19440780A NZ 194407 A NZ194407 A NZ 194407A
Authority
NZ
New Zealand
Prior art keywords
step process
wood pulps
improving properties
mechanical wood
mechanical
Prior art date
Application number
NZ19440780A
Other languages
English (en)
Inventor
A Barnet
A Shaw
C 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 NZ194407A publication Critical patent/NZ194407A/xx

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
NZ19440780A 1979-12-17 1980-07-21 Three-step process for improving properties of mechanical wood pulps NZ194407A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
NZ194407A true NZ194407A (en) 1983-02-15

Family

ID=22301732

Family Applications (1)

Application Number Title Priority Date Filing Date
NZ19440780A NZ194407A (en) 1979-12-17 1980-07-21 Three-step process for improving properties of mechanical wood pulps

Country Status (9)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5607546A (en) * 1990-02-13 1997-03-04 Molnlycke Ab CTMP-process
US6458245B1 (en) 1990-02-13 2002-10-01 Sca Research Ab CTMP-process

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
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
WO1997022749A1 (en) * 1995-12-19 1997-06-26 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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5607546A (en) * 1990-02-13 1997-03-04 Molnlycke Ab CTMP-process
US6458245B1 (en) 1990-02-13 2002-10-01 Sca Research Ab CTMP-process

Also Published As

Publication number Publication date
CA1145107A (en) 1983-04-26
FI71779C (fi) 1987-02-09
FI71779B (fi) 1986-10-31
JPS5691093A (en) 1981-07-23
MX156081A (es) 1988-06-30
EP0030778A1 (en) 1981-06-24
EP0030778B1 (en) 1983-07-20
FI802654A (fi) 1981-06-18
DE3064270D1 (en) 1983-08-25
BR8005950A (pt) 1981-06-23
AU531907B2 (en) 1983-09-08
AU6046080A (en) 1981-06-25

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