FI43032B - - Google Patents
Info
- Publication number
- FI43032B FI43032B FI1078/64A FI107864A FI43032B FI 43032 B FI43032 B FI 43032B FI 1078/64 A FI1078/64 A FI 1078/64A FI 107864 A FI107864 A FI 107864A FI 43032 B FI43032 B FI 43032B
- Authority
- FI
- Finland
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
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/06—Pretreatment of the finely-divided materials before digesting with alkaline reacting compounds
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE563463 | 1963-05-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FI43032B true FI43032B (en) | 1970-09-02 |
| FI43032C FI43032C (en) | 1973-01-26 |
Family
ID=20266882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI641078A FI43032C (en) | 1963-05-21 | 1964-05-20 | A method of making chemimechanical pulps by heating and grinding wood chips impregnated with sulphite solutions in a steam atmosphere and at an elevated temperature |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3558428A (en) |
| BE (1) | BE648248A (en) |
| CH (1) | CH430421A (en) |
| DE (1) | DE1517169A1 (en) |
| FI (1) | FI43032C (en) |
| FR (1) | FR1395391A (en) |
| GB (1) | GB1064567A (en) |
| NL (1) | NL6405633A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4187141A (en) * | 1975-02-24 | 1980-02-05 | Alf Societe Anonyme | Method of producing bleached mechanical pulp |
| CA1075857A (en) * | 1976-02-20 | 1980-04-22 | Price Company Limited (The) | Chemical pretreatment of wood prior to making refiner groundwood |
| US4116758A (en) * | 1976-05-14 | 1978-09-26 | Canadian International Paper Co. | Method of producing high yield chemimechanical pulps |
| US4211605A (en) * | 1978-08-03 | 1980-07-08 | Canadian International Paper Company | High yield chemimechanical pulping processes |
| SE420742B (en) * | 1980-03-14 | 1981-10-26 | Sca Development Ab | SET FOR TREATMENT OF WOOD TIP FOR MASS MANUFACTURING |
| US4486267A (en) * | 1983-11-14 | 1984-12-04 | Mead Corporation | Chemithermomechanical pulping process employing separate alkali and sulfite treatments |
| US4995943A (en) * | 1985-12-27 | 1991-02-26 | Rehberg Karl H | Pretreatment of cellulosic material with carbon dioxide |
| DE4307660C1 (en) * | 1993-03-11 | 1994-08-04 | Feldmuehle Ag Stora | Manufacture of chemo-mechanical and / or chemo-thermo-mechanical wood materials |
-
1964
- 1964-05-20 FI FI641078A patent/FI43032C/en active
- 1964-05-20 DE DE19641517169 patent/DE1517169A1/en not_active Withdrawn
- 1964-05-20 GB GB20733/64A patent/GB1064567A/en not_active Expired
- 1964-05-20 CH CH653664A patent/CH430421A/en unknown
- 1964-05-21 FR FR975349A patent/FR1395391A/en not_active Expired
- 1964-05-21 BE BE648248D patent/BE648248A/xx unknown
- 1964-05-21 NL NL6405633A patent/NL6405633A/xx unknown
-
1967
- 1967-12-29 US US694415A patent/US3558428A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| BE648248A (en) | 1964-09-16 |
| FR1395391A (en) | 1965-04-09 |
| DE1517169A1 (en) | 1969-10-09 |
| CH430421A (en) | 1967-02-15 |
| FI43032C (en) | 1973-01-26 |
| GB1064567A (en) | 1967-04-05 |
| NL6405633A (en) | 1964-11-23 |
| US3558428A (en) | 1971-01-26 |