GB810140A - Apparatus for defibrating hard wood - Google Patents
Apparatus for defibrating hard woodInfo
- Publication number
- GB810140A GB810140A GB22849/56A GB2284956A GB810140A GB 810140 A GB810140 A GB 810140A GB 22849/56 A GB22849/56 A GB 22849/56A GB 2284956 A GB2284956 A GB 2284956A GB 810140 A GB810140 A GB 810140A
- Authority
- GB
- United Kingdom
- Prior art keywords
- july
- fibres
- screening drum
- drum
- defibrator
- 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
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/20—Methods of refining
- D21D1/32—Hammer mills
-
- 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
Abstract
810,140. Preparation of paper pulp. ARGUILLERE, J., and PAPETERIES DE LA CHAPELLE. July 24, 1956 [July 27, 1955 ; July 12, 1956], No. 22849/56. Class 96. Hard-wood chips, or cuttings thereof, are defibrated to produce paper-making fibres, by first de-aerating them in an air-tight chamber (not shown, Fig. 1) in the presence of a liquid, e.g. a caustic soda solution, and then feeding them by a screw conveyer 33 into a centrifugal defibrator having an annular grindstone 2, and having hollow rotary paddles 9 supplied with water from a hollow shaft and hollow radial arms 10, the water emerging from holes 16 in the paddles 9 and diluting the pulp near a screening drum 42 so that finer fibres are washed through the holes 43 of the drum 42, the fibres being discharged through a pipe and valve 17. Any chemical liquor used may be strengthened and re-cycled. In a modification, an annular screen occupying a short length of the space taken by the grindstone 2 is used instead of the screening drum 42; or the screening drum may be substituted by a stationary cylindrical enclosure adjacent to the wall 3 of the defibrator.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR810140X | 1955-07-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB810140A true GB810140A (en) | 1959-03-11 |
Family
ID=9254506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22849/56A Expired GB810140A (en) | 1955-07-27 | 1956-07-24 | Apparatus for defibrating hard wood |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB810140A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4145246A (en) * | 1976-07-19 | 1979-03-20 | Crown Zellerbach Corporation | Process for making high-strength, high-yield sulfite-modified thermomechanical pulp and a linerboard composition produced therefrom |
-
1956
- 1956-07-24 GB GB22849/56A patent/GB810140A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4145246A (en) * | 1976-07-19 | 1979-03-20 | Crown Zellerbach Corporation | Process for making high-strength, high-yield sulfite-modified thermomechanical pulp and a linerboard composition produced therefrom |
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