GB311945A - A new or improved process for treating fibrous materials for paper making and other purposes - Google Patents
A new or improved process for treating fibrous materials for paper making and other purposesInfo
- Publication number
- GB311945A GB311945A GB1484728A GB1484728A GB311945A GB 311945 A GB311945 A GB 311945A GB 1484728 A GB1484728 A GB 1484728A GB 1484728 A GB1484728 A GB 1484728A GB 311945 A GB311945 A GB 311945A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cooking
- lime
- grinding
- water
- purposes
- 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)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Paper (AREA)
Abstract
311,945. Gratze, E. V. Hayes-, (Leyst, C.). May 21, 1928. Pulp, preparation of.-Paper pulp is produced from straw, esparto grass or the like by decomposing the material by cooking in lime and water to free the cellulose and then milling or grinding to a flour-like consistency, or alternatively milling or grinding the material to a flour-like consistency and then freeing the product from glutinous, resinous, silicious, pectinous and other impurities by cooking in lime and water. The decomposition is carried out by cooking in an open boiler with excess of water and about 30 per cent of lime for about six or eight hours. The material is then washed and ground either before or after drying. In the alternative process the grinding precedes the cooking. As a preliminary the raw material may be exposed in a moist or wet condition to a temperature of 30‹ C. for from three to six days, with or without a small proportion of alkali, to assist the development of the bacillus butyricus and the elimination of the pectin impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1484728A GB311945A (en) | 1928-05-21 | 1928-05-21 | A new or improved process for treating fibrous materials for paper making and other purposes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1484728A GB311945A (en) | 1928-05-21 | 1928-05-21 | A new or improved process for treating fibrous materials for paper making and other purposes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB311945A true GB311945A (en) | 1929-05-23 |
Family
ID=10048523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1484728A Expired GB311945A (en) | 1928-05-21 | 1928-05-21 | A new or improved process for treating fibrous materials for paper making and other purposes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB311945A (en) |
-
1928
- 1928-05-21 GB GB1484728A patent/GB311945A/en not_active Expired
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