EP0138484A3 - Mechanical pulping - Google Patents
Mechanical pulping Download PDFInfo
- Publication number
- EP0138484A3 EP0138484A3 EP84306656A EP84306656A EP0138484A3 EP 0138484 A3 EP0138484 A3 EP 0138484A3 EP 84306656 A EP84306656 A EP 84306656A EP 84306656 A EP84306656 A EP 84306656A EP 0138484 A3 EP0138484 A3 EP 0138484A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- chips
- refiner
- pulp
- discharge
- passing
- 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.)
- Withdrawn
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
- D21B1/02—Pretreatment of the raw materials by chemical or physical means
- D21B1/021—Pretreatment of the raw materials by chemical or physical means by chemical means
-
- 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)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Inorganic Insulating Materials (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US54384783A | 1983-10-20 | 1983-10-20 | |
US543847 | 1983-10-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0138484A2 EP0138484A2 (en) | 1985-04-24 |
EP0138484A3 true EP0138484A3 (en) | 1986-07-02 |
Family
ID=24169776
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP84306656A Withdrawn EP0138484A3 (en) | 1983-10-20 | 1984-09-28 | Mechanical pulping |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0138484A3 (en) |
JP (1) | JPS60146090A (en) |
BR (1) | BR8405320A (en) |
CA (1) | CA1240456A (en) |
FI (1) | FI844071L (en) |
NO (1) | NO844062L (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE454186C (en) * | 1985-03-13 | 1989-09-25 | Eka Nobel Ab | SET FOR PREPARATION OF CHEMICAL MECHANICAL |
SE8501246L (en) * | 1985-03-13 | 1986-09-14 | Eka Ab | SET TO MANUFACTURE IN BLEACH, CHEMICAL MECHANICAL AND SEMI-CHEMICAL FIBER MASS USING ONE-STEP IMAGRATION |
SE458690B (en) * | 1986-11-06 | 1989-04-24 | Sunds Defibrator | MAKE MANUFACTURING MECHANICAL MASS FROM LIGNOCELLULOSALLY MATERIAL IN PIECE FORM WITH A LENGTH IN THE FIBER DIRECTION OF AT LEAST 200 MM |
US5853534A (en) * | 1992-12-30 | 1998-12-29 | Sunds Defibrator Industries Ab | Method of producing pulp with high yield using a two-stage refining system operating at different temperatures |
FI113670B (en) * | 1999-12-09 | 2004-05-31 | Upm Kymmene Corp | Process for producing printing paper |
FI113552B (en) | 1999-12-09 | 2004-05-14 | Upm Kymmene Corp | Process for producing printing paper |
FI126694B (en) * | 2005-12-02 | 2017-04-13 | Metsä Board Oyj | Chemical-mechanical pulp and process for producing chemical-mechanical pulp |
US8262851B2 (en) | 2006-08-10 | 2012-09-11 | Andritz Inc. | Processes and systems for the pulping of lignocellulosic materials |
WO2008076055A1 (en) * | 2006-12-19 | 2008-06-26 | Akzo Nobel N.V. | Process of pulping |
WO2008153565A1 (en) * | 2007-06-12 | 2008-12-18 | Meadwestvaco Corporation | A fiber blend having high yield and enhanced pulp performance and method for making same |
US20080308239A1 (en) | 2007-06-12 | 2008-12-18 | Hart Peter W | Fiber blend having high yield and enhanced pulp performance and method for making same |
SE537483C2 (en) * | 2012-03-23 | 2015-05-19 | Valmet Oy | Method and apparatus for cleaning lignocellulosic material during impregnation |
CN107503214A (en) * | 2017-10-11 | 2017-12-22 | 山东恒安纸业有限公司 | A kind of new paper for daily use is for sizing device and technique |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB785060A (en) * | 1954-04-08 | 1957-10-23 | Waldhof Zellstoff Fab | Process for obtaining bleached semi-chemical pulp |
US4116758A (en) * | 1976-05-14 | 1978-09-26 | Canadian International Paper Co. | Method of producing high yield chemimechanical pulps |
GB1547939A (en) * | 1976-07-19 | 1979-07-04 | Crown Zellerbach Corp | Sulphite-modified thermomechanical pulp for use in linerboard |
US4229250A (en) * | 1979-02-28 | 1980-10-21 | Valmet Oy | Method of improving properties of mechanical paper pulp without chemical reaction therewith |
EP0034560A2 (en) * | 1980-02-14 | 1981-08-26 | Beloit Corporation | Method and apparatus for efficiently producing cellulosic pulp by the thermo-mechanical pulping method |
-
1984
- 1984-09-11 CA CA000462872A patent/CA1240456A/en not_active Expired
- 1984-09-28 EP EP84306656A patent/EP0138484A3/en not_active Withdrawn
- 1984-10-10 NO NO844062A patent/NO844062L/en unknown
- 1984-10-16 FI FI844071A patent/FI844071L/en not_active Application Discontinuation
- 1984-10-19 BR BR8405320A patent/BR8405320A/en unknown
- 1984-10-19 JP JP59220299A patent/JPS60146090A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB785060A (en) * | 1954-04-08 | 1957-10-23 | Waldhof Zellstoff Fab | Process for obtaining bleached semi-chemical pulp |
US4116758A (en) * | 1976-05-14 | 1978-09-26 | Canadian International Paper Co. | Method of producing high yield chemimechanical pulps |
GB1547939A (en) * | 1976-07-19 | 1979-07-04 | Crown Zellerbach Corp | Sulphite-modified thermomechanical pulp for use in linerboard |
US4229250A (en) * | 1979-02-28 | 1980-10-21 | Valmet Oy | Method of improving properties of mechanical paper pulp without chemical reaction therewith |
EP0034560A2 (en) * | 1980-02-14 | 1981-08-26 | Beloit Corporation | Method and apparatus for efficiently producing cellulosic pulp by the thermo-mechanical pulping method |
Also Published As
Publication number | Publication date |
---|---|
EP0138484A2 (en) | 1985-04-24 |
FI844071A0 (en) | 1984-10-16 |
JPS60146090A (en) | 1985-08-01 |
FI844071L (en) | 1985-04-21 |
BR8405320A (en) | 1985-09-03 |
CA1240456A (en) | 1988-08-16 |
NO844062L (en) | 1985-04-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): AT DE FR SE |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT DE FR SE |
|
17P | Request for examination filed |
Effective date: 19861203 |
|
17Q | First examination report despatched |
Effective date: 19880314 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19880715 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: PROUGH, JAMES ROBERT |