CA1071805A - Amelioration des proprietes d'egouttement et d'allongement a l'etat humide de la pate mecanique - Google Patents
Amelioration des proprietes d'egouttement et d'allongement a l'etat humide de la pate mecaniqueInfo
- 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
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)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA289,427A CA1071805A (fr) | 1977-10-25 | 1977-10-25 | Amelioration des proprietes d'egouttement et d'allongement a l'etat humide de la pate mecanique |
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 (fr) | 1977-10-25 | 1977-10-25 | Amelioration des proprietes d'egouttement et d'allongement a l'etat humide de la pate mecanique |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1071805A true CA1071805A (fr) | 1980-02-19 |
Family
ID=4109848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA289,427A Expired CA1071805A (fr) | 1977-10-25 | 1977-10-25 | Amelioration des proprietes d'egouttement et d'allongement a l'etat humide de la pate mecanique |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPS5473902A (fr) |
CA (1) | CA1071805A (fr) |
FI (1) | FI74051C (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0096548A1 (fr) * | 1982-06-04 | 1983-12-21 | Macmillan Bloedel Limited | Traitement chimique en deux étapes d'une pâte de bois mécanique |
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 |
Family Cites Families (4)
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 (fr) * | 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 |
-
1977
- 1977-10-25 CA CA289,427A patent/CA1071805A/fr not_active Expired
-
1978
- 1978-10-20 FI FI783200A patent/FI74051C/fi not_active IP Right Cessation
- 1978-10-25 JP JP13058378A patent/JPS5473902A/ja active Granted
Cited By (6)
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 (fr) * | 1982-06-04 | 1983-12-21 | Macmillan Bloedel Limited | Traitement chimique en deux étapes d'une pâte de bois mécanique |
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 |
Also Published As
Publication number | Publication date |
---|---|
JPS6247999B2 (fr) | 1987-10-12 |
FI74051B (fi) | 1987-08-31 |
FI783200A (fi) | 1979-04-26 |
FI74051C (fi) | 1988-11-28 |
JPS5473902A (en) | 1979-06-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MKEX | Expiry |