Title:
セルロースパルプを製造する方法と装置
Document Type and Number:
Japanese Patent JP2008513621
Kind Code:
A
Abstract:
Process and device to manufacture and dewater cellulose pulps in which defibered cellulose is screened to remove shives, fractionated in to at least three fractions ( 10, 3, 12 ), which fractions are treated each by itself and then are brought together completely or partly, and that the fractionation is done according to specific surface, preferably with hydrocyclones, and that the process comprises process stages ( 6,7 ) that fractionates out fibers with high specific surface, preferably thin-walled fibers, and that the process comprises process stages ( 2 ) that fractionates out fibers that have lower specific surface, preferably fibers with thicker fiber wall, and that one or several fiber fractions ( 3, 3 a) are treated, to be split, fibrillated and permanently collapsed, preferably with a refiner, ball mill or similar.
Inventors:
Wikdal, Lenart, Nils, Andels
Bergström, Bernd-Olov
Shagaev, Oleg
Nevandel, tor, rolf
Bergström, Bernd-Olov
Shagaev, Oleg
Nevandel, tor, rolf
Application Number:
JP2007532278A
Publication Date:
May 01, 2008
Filing Date:
June 06, 2005
Export Citation:
Assignee:
Nos Arbe
International Classes:
D21D1/20; D21C9/10; D21D5/24; D21B
Domestic Patent References:
| JP2002509204A | 2002-03-26 | |||
| JPH02118191A | 1990-05-02 | |||
| JPS5394601A | 1978-08-18 | |||
| JPS6399388A | 1988-04-30 | |||
| JPH05214688A | 1993-08-24 | |||
| JP2002530546A | 2002-09-17 |
Attorney, Agent or Firm:
Nobuaki Kazehaya
Noriko Asano
Noriko Asano