GB1515865A - Wood pulp - Google Patents
Wood pulpInfo
- Publication number
- GB1515865A GB1515865A GB37605/75A GB3760575A GB1515865A GB 1515865 A GB1515865 A GB 1515865A GB 37605/75 A GB37605/75 A GB 37605/75A GB 3760575 A GB3760575 A GB 3760575A GB 1515865 A GB1515865 A GB 1515865A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulp
- buffer
- mechanical
- sept
- refiner
- 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
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/38—Conserving the finely-divided cellulosic material
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/20—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing organic 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
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/14—Disintegrating in mills
- D21B1/16—Disintegrating in mills in the presence of chemical agents
Abstract
1515865 Treating mechanical pulp PAPIRINDUSTRIENS FORSKNING-SINSTITUTT 12 Sept 1975 [12 Sept 1974] 37605/75 Heading D2W Mechanical wood pulp is impregnated with a buffer agent (other than a borate) which buffers in the pH range 6-10, the buffer agent being present in an amount of at least 0.2% by wt., based on the dry wt. of the pulp. The buffer, which may be added in the form of an aqueous solution, may be introduced into a refiner or grinder, the white water system of a paper machine, or by injection into the pulp. The buffer may be an alkali metal salt or ammonium salt of phosphoric acid, carbonic acid, citric acid or tartaric acid. The examples describe the use of sodium phosphate, ammonium carbonate, sodium citrate, and sodium borate (for comparison only) buffer solutions. The mechanical pulp may be a refiner pulp, ground wood pulp or, a thermomechanical pulp, which may have been treated with ozone. The treated pulps are stated to be easily wet defiberised, and show a high water absorption rate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO743286A NO136583C (en) | 1974-09-12 | 1974-09-12 | MECHANICAL TRIMASSES WITH HIGH SPEED OF ABSORPTION, AND PROCEDURE FOR PREPARING THEREOF |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1515865A true GB1515865A (en) | 1978-06-28 |
Family
ID=19881821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB37605/75A Expired GB1515865A (en) | 1974-09-12 | 1975-09-12 | Wood pulp |
Country Status (13)
| Country | Link |
|---|---|
| JP (1) | JPS5184904A (en) |
| AT (1) | AT347781B (en) |
| BE (1) | BE833343A (en) |
| CA (1) | CA1073162A (en) |
| DE (1) | DE2539570C3 (en) |
| DK (1) | DK141255B (en) |
| FI (1) | FI59444C (en) |
| FR (1) | FR2284706A1 (en) |
| GB (1) | GB1515865A (en) |
| IT (1) | IT1049168B (en) |
| NL (1) | NL7510763A (en) |
| NO (1) | NO136583C (en) |
| SE (1) | SE418873B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE432118B (en) * | 1975-02-26 | 1984-03-19 | Moelnlycke Ab | MECHANICAL FLUFF MASS AND SET FOR PREPARATION THEREOF |
| NO760666L (en) * | 1976-02-27 | 1977-08-30 | Papirind Forskningsinst | PROCEDURE FOR MAKING MECHANICAL MASSES. |
| PH13425A (en) * | 1976-05-10 | 1980-04-23 | Du Pont | 2,3,8,12b-tetrahydro 1 h-3a,8-methano-dibenzo(3,4,6,7)cyclohepta(1,2-c)pyrrole derivatives pharmaceutical compositions containing same and method |
| DE3128100C2 (en) * | 1981-07-16 | 1986-05-22 | Chemische Fabrik Stockhausen GmbH, 4150 Krefeld | Absorbents for blood and serous body fluids |
| DE3712445A1 (en) * | 1987-04-11 | 1988-10-20 | Ver Papierwerke Ag | HYGIENIC PULP PRODUCT WITH IMPROVED SKIN COMPATIBILITY |
-
1974
- 1974-09-12 NO NO743286A patent/NO136583C/en unknown
-
1975
- 1975-09-05 AT AT688175A patent/AT347781B/en active
- 1975-09-05 DE DE2539570A patent/DE2539570C3/en not_active Expired
- 1975-09-08 CA CA234,947A patent/CA1073162A/en not_active Expired
- 1975-09-10 IT IT12785/75A patent/IT1049168B/en active
- 1975-09-10 FR FR7527764A patent/FR2284706A1/en active Granted
- 1975-09-11 SE SE7510158A patent/SE418873B/en not_active Application Discontinuation
- 1975-09-11 DK DK406775AA patent/DK141255B/en not_active Application Discontinuation
- 1975-09-11 FI FI752552A patent/FI59444C/en not_active IP Right Cessation
- 1975-09-12 GB GB37605/75A patent/GB1515865A/en not_active Expired
- 1975-09-12 BE BE159977A patent/BE833343A/en not_active IP Right Cessation
- 1975-09-12 JP JP50110115A patent/JPS5184904A/ja active Pending
- 1975-09-12 NL NL7510763A patent/NL7510763A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| FR2284706A1 (en) | 1976-04-09 |
| BE833343A (en) | 1975-12-31 |
| NO136583B (en) | 1977-06-20 |
| FI59444B (en) | 1981-04-30 |
| SE7510158L (en) | 1976-03-15 |
| DE2539570A1 (en) | 1976-04-01 |
| JPS5184904A (en) | 1976-07-24 |
| AT347781B (en) | 1979-01-10 |
| NO136583C (en) | 1984-06-07 |
| FR2284706B1 (en) | 1982-04-23 |
| FI752552A (en) | 1976-03-13 |
| SE418873B (en) | 1981-06-29 |
| NO743286L (en) | 1976-03-15 |
| DE2539570B2 (en) | 1979-06-13 |
| ATA688175A (en) | 1978-05-15 |
| NL7510763A (en) | 1976-03-16 |
| DK141255B (en) | 1980-02-11 |
| CA1073162A (en) | 1980-03-11 |
| DE2539570C3 (en) | 1980-02-14 |
| AU8455175A (en) | 1977-03-10 |
| IT1049168B (en) | 1981-01-20 |
| DK406775A (en) | 1976-03-13 |
| FI59444C (en) | 1981-08-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |