FI68432C - Förfarande för framställning av raffinerad trämassa. - Google Patents
Förfarande för framställning av raffinerad trämassa. Download PDFInfo
- Publication number
- FI68432C FI68432C FI834576A FI834576A FI68432C FI 68432 C FI68432 C FI 68432C FI 834576 A FI834576 A FI 834576A FI 834576 A FI834576 A FI 834576A FI 68432 C FI68432 C FI 68432C
- Authority
- FI
- Finland
- Prior art keywords
- chips
- hardwood
- pulp
- softwood
- pretreatment
- 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
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/02—Pretreatment of the raw materials by chemical or physical means
- D21B1/021—Pretreatment of the raw materials by chemical or physical means by chemical means
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI834576A FI68432C (sv) | 1983-12-13 | 1983-12-13 | Förfarande för framställning av raffinerad trämassa. |
FR8418875A FR2556376B1 (fr) | 1983-12-13 | 1984-12-11 | Procede pour produire de la pate de bois broye affinee |
CA000469917A CA1230709A (en) | 1983-12-13 | 1984-12-12 | Procedure for producing refined groundwood pulp |
SU843829103A SU1524815A3 (ru) | 1983-12-13 | 1984-12-12 | Способ получени рафинированной древесной массы из щепы |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI834576 | 1983-12-13 | ||
FI834576A FI68432C (sv) | 1983-12-13 | 1983-12-13 | Förfarande för framställning av raffinerad trämassa. |
Publications (3)
Publication Number | Publication Date |
---|---|
FI834576A0 FI834576A0 (fi) | 1983-12-13 |
FI68432B FI68432B (fi) | 1985-05-31 |
FI68432C true FI68432C (sv) | 1987-01-19 |
Family
ID=8518210
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI834576A FI68432C (sv) | 1983-12-13 | 1983-12-13 | Förfarande för framställning av raffinerad trämassa. |
Country Status (4)
Country | Link |
---|---|
CA (1) | CA1230709A (sv) |
FI (1) | FI68432C (sv) |
FR (1) | FR2556376B1 (sv) |
SU (1) | SU1524815A3 (sv) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2723598B1 (fr) * | 1994-08-10 | 1996-10-18 | Sorgho Agro Ind Et Papetier Sa | Procede de demoellage de plantes a moelle, en particulier sorgho, en vue d'obtenir des fibres de qualite papetiere |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1022145A (fr) * | 1950-07-18 | 1953-02-27 | Hellefors Bruks Aktiebolag | Procédé de fabrication de plaques, carton, papier, corps moulés et analogues à partir de matière fibreuse végétale |
SE416481B (sv) * | 1977-05-02 | 1981-01-05 | Mo Och Domsjoe Ab | Fofarande och anordning for behandling av vedflis for avlegsnande av tungmetaller och harts |
-
1983
- 1983-12-13 FI FI834576A patent/FI68432C/sv not_active IP Right Cessation
-
1984
- 1984-12-11 FR FR8418875A patent/FR2556376B1/fr not_active Expired
- 1984-12-12 SU SU843829103A patent/SU1524815A3/ru active
- 1984-12-12 CA CA000469917A patent/CA1230709A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CA1230709A (en) | 1987-12-29 |
SU1524815A3 (ru) | 1989-11-23 |
FI68432B (fi) | 1985-05-31 |
FR2556376B1 (fr) | 1989-12-22 |
FI834576A0 (fi) | 1983-12-13 |
FR2556376A1 (fr) | 1985-06-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM | Patent lapsed | ||
MM | Patent lapsed |
Owner name: YHTYNEET PAPERITEHTAAT OY JYLHAEVAARA |