GB1247019A - Improvements in or relating to papermaking - Google Patents
Improvements in or relating to papermakingInfo
- Publication number
- GB1247019A GB1247019A GB4425368A GB4425368A GB1247019A GB 1247019 A GB1247019 A GB 1247019A GB 4425368 A GB4425368 A GB 4425368A GB 4425368 A GB4425368 A GB 4425368A GB 1247019 A GB1247019 A GB 1247019A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stock
- rubbery
- sept
- impurities
- mixture
- 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
- 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
- D21C9/08—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/16—Pure paper, i.e. paper lacking or having low content of contaminants
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/02—Chemical or chemomechanical or chemothermomechanical pulp
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Abstract
1,247,019. Papermaking. K. SAITO. 18 Sept., 1968 [19 Sept., 1967], No. 44253/68. Heading D2A. [Also in Division B2] Rubbery impurities are removed from paper stock by a process which comprises mixing and diluting the stock with water, introducing and simultaneously dispersing an aerated stream of this mixture into a zone maintained at a subatmospheric pressure, allowing the mixture to accumulate in the zone, and removing the layer of rubbery impurities which forms on the surface. Purified stock is removed from a level below that of the surface of the stock in the vessel. The stock may be beaten, screened and loaded with chemical or other additives before removal of the rubbery impurity. The process is particularly useful in producing usable pulp from rubber trees.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5957967A JPS4944003B1 (en) | 1967-09-19 | 1967-09-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1247019A true GB1247019A (en) | 1971-09-22 |
Family
ID=13117264
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4425368A Expired GB1247019A (en) | 1967-09-19 | 1968-09-18 | Improvements in or relating to papermaking |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPS4944003B1 (en) |
GB (1) | GB1247019A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03505846A (en) * | 1988-07-12 | 1991-12-19 | アールストロム マシナリイ オサケ ユキチュア | Method and apparatus for removing light substances from fiber suspensions |
CN115787336A (en) * | 2022-12-09 | 2023-03-14 | 安德里茨(中国)有限公司 | A mix thick liquid groove device and make paper and be equipped with thick liquid line for making paper be equipped with thick liquid line |
-
1967
- 1967-09-19 JP JP5957967A patent/JPS4944003B1/ja active Pending
-
1968
- 1968-09-18 GB GB4425368A patent/GB1247019A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03505846A (en) * | 1988-07-12 | 1991-12-19 | アールストロム マシナリイ オサケ ユキチュア | Method and apparatus for removing light substances from fiber suspensions |
CN115787336A (en) * | 2022-12-09 | 2023-03-14 | 安德里茨(中国)有限公司 | A mix thick liquid groove device and make paper and be equipped with thick liquid line for making paper be equipped with thick liquid line |
CN115787336B (en) * | 2022-12-09 | 2024-01-19 | 安德里茨(中国)有限公司 | Pulp mixing tank device for papermaking pulp preparing line and papermaking pulp preparing line |
Also Published As
Publication number | Publication date |
---|---|
JPS4944003B1 (en) | 1974-11-26 |
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