ES414474A1 - Metodo para reducir a pasta de papel maderas duras. - Google Patents
Metodo para reducir a pasta de papel maderas duras.Info
- Publication number
- ES414474A1 ES414474A1 ES414474A ES414474A ES414474A1 ES 414474 A1 ES414474 A1 ES 414474A1 ES 414474 A ES414474 A ES 414474A ES 414474 A ES414474 A ES 414474A ES 414474 A1 ES414474 A1 ES 414474A1
- Authority
- ES
- Spain
- Prior art keywords
- hardwoods
- pulp
- pulping process
- soften
- chips
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Rod-Shaped Construction Members (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US25333172A | 1972-05-15 | 1972-05-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES414474A1 true ES414474A1 (es) | 1976-06-01 |
Family
ID=22959834
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES414474A Expired ES414474A1 (es) | 1972-05-15 | 1973-05-07 | Metodo para reducir a pasta de papel maderas duras. |
Country Status (10)
Country | Link |
---|---|
JP (2) | JPS4947601A (ja) |
BR (1) | BR7303500D0 (ja) |
CA (1) | CA990910A (ja) |
DE (1) | DE2320812C2 (ja) |
ES (1) | ES414474A1 (ja) |
FI (1) | FI55363C (ja) |
FR (1) | FR2184608B1 (ja) |
GB (1) | GB1425901A (ja) |
NO (1) | NO141951C (ja) |
SE (1) | SE404043B (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5249302A (en) * | 1975-10-16 | 1977-04-20 | Hitachi Shipbuilding Eng Co | Process for alkali pulping |
JPS5653295A (en) * | 1979-10-04 | 1981-05-12 | Kogyo Gijutsuin | Pulping method of waste rubber material |
US4559103A (en) * | 1982-08-05 | 1985-12-17 | Honshu Seishi Kabushiki Kaisha | Packaging paper and packaging material for packaging metallic material and method of producing the same |
DE3401072C2 (de) * | 1984-01-13 | 1986-04-10 | Nukem Gmbh, 6450 Hanau | Elektrodynamischer Wandlerkopf |
RU2091529C1 (ru) * | 1995-11-21 | 1997-09-27 | Грудинин Владимир Павлович | Способ приготовления варочного раствора для получения волокнистого полуфабриката |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE252411C (ja) * | ||||
US1859846A (en) * | 1926-08-04 | 1932-05-24 | Arthur M Hyde | Wood pulp and process of making the same |
FR716302A (fr) * | 1930-09-04 | 1931-12-18 | Papeteries Navarre | Procédé de purification de la cellulose de bois |
JPS4887101A (ja) * | 1972-02-22 | 1973-11-16 | ||
GB1432245A (en) * | 1972-05-01 | 1976-04-14 | Westvaco Corp | Method of pulping wood |
-
1973
- 1973-04-11 FR FR7313157A patent/FR2184608B1/fr not_active Expired
- 1973-04-25 DE DE19732320812 patent/DE2320812C2/de not_active Expired
- 1973-05-07 ES ES414474A patent/ES414474A1/es not_active Expired
- 1973-05-11 GB GB2255173A patent/GB1425901A/en not_active Expired
- 1973-05-14 CA CA171,289A patent/CA990910A/en not_active Expired
- 1973-05-14 BR BR350073A patent/BR7303500D0/pt unknown
- 1973-05-14 FI FI153573A patent/FI55363C/fi active
- 1973-05-14 NO NO198873A patent/NO141951C/no unknown
- 1973-05-14 SE SE7306753A patent/SE404043B/xx unknown
- 1973-05-15 JP JP5320773A patent/JPS4947601A/ja active Pending
-
1980
- 1980-07-15 JP JP9577680A patent/JPS5643495A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
CA990910A (en) | 1976-06-15 |
JPS4947601A (ja) | 1974-05-08 |
JPS5643495A (en) | 1981-04-22 |
NO141951B (no) | 1980-02-25 |
GB1425901A (en) | 1976-02-25 |
FI55363C (fi) | 1979-07-10 |
NO141951C (no) | 1980-06-04 |
FR2184608A1 (ja) | 1973-12-28 |
DE2320812A1 (de) | 1973-11-29 |
SE404043B (sv) | 1978-09-18 |
DE2320812C2 (de) | 1982-06-16 |
FR2184608B1 (ja) | 1975-04-04 |
FI55363B (fi) | 1979-03-30 |
BR7303500D0 (pt) | 1974-07-18 |
AU5452873A (en) | 1974-10-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 20100623 |