FI872391A0 - Menetelmä ja laitteisto massan valkaisemiseksi - Google Patents
Menetelmä ja laitteisto massan valkaisemiseksiInfo
- Publication number
- FI872391A0 FI872391A0 FI872391A FI872391A FI872391A0 FI 872391 A0 FI872391 A0 FI 872391A0 FI 872391 A FI872391 A FI 872391A FI 872391 A FI872391 A FI 872391A FI 872391 A0 FI872391 A0 FI 872391A0
- Authority
- FI
- Finland
- Prior art keywords
- bleaching
- pulp
- Prior art date
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
- 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
- D21C9/10—Bleaching ; Apparatus therefor
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8801985A SE8801985L (sv) | 1987-05-28 | 1988-05-27 | Foerfarande foer reglering av en ventilationsledning samt anordning foer genomfoerande av foerfarandet |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA510446 | 1986-05-30 | ||
CA000510446A CA1294396C (en) | 1986-05-30 | 1986-05-30 | Process for decreasing the charge of chemical required in a bleaching extraction stage |
Publications (4)
Publication Number | Publication Date |
---|---|
FI872391A0 true FI872391A0 (fi) | 1987-05-28 |
FI872391A FI872391A (fi) | 1987-12-01 |
FI91289B FI91289B (fi) | 1994-02-28 |
FI91289C FI91289C (fi) | 1994-06-10 |
Family
ID=4133252
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI872391A FI91289C (fi) | 1986-05-30 | 1987-05-28 | Menetelmä ja laitteisto massan valkaisemiseksi |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS6328993A (fi) |
CA (1) | CA1294396C (fi) |
FI (1) | FI91289C (fi) |
SE (1) | SE500585C2 (fi) |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE445051B (sv) * | 1980-04-10 | 1986-05-26 | Sca Development Ab | Sett vid tillverkning av mekanisk, i huvudsak hartsfri cellulosamassa |
-
1986
- 1986-05-30 CA CA000510446A patent/CA1294396C/en not_active Expired - Lifetime
-
1987
- 1987-05-22 SE SE8702141A patent/SE500585C2/sv not_active IP Right Cessation
- 1987-05-28 FI FI872391A patent/FI91289C/fi not_active IP Right Cessation
- 1987-05-28 JP JP62130081A patent/JPS6328993A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
SE8702141L (sv) | 1987-12-01 |
FI872391A (fi) | 1987-12-01 |
JPH0415313B2 (fi) | 1992-03-17 |
SE8702141D0 (sv) | 1987-05-22 |
FI91289B (fi) | 1994-02-28 |
JPS6328993A (ja) | 1988-02-06 |
SE500585C2 (sv) | 1994-07-18 |
FI91289C (fi) | 1994-06-10 |
CA1294396C (en) | 1992-01-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
BB | Publication of examined application | ||
FG | Patent granted |
Owner name: PULP AND PAPER RESEARCH INSTITUTE OF CANADA |
|
MA | Patent expired |