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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
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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