Title:
微細紙粉製造方法
Document Type and Number:
Japanese Patent JP4536161
Kind Code:
B1
Abstract:
Coarsely shredded paper powder is pulverized using a first vertical roller mill equipped with a plurality of first pulverizing rollers 15 to obtain a fine paper powder having an average particle diameter of 50 µm or greater and less than 150 µm. Then, such a fine paper powder is further pulverized using a second vertical roller mill equipped with a plurality of second pulverizing rollers 25 to obtain a fine paper powder having an average particle diameter of 25 µm or greater and less than 50 µm. Concerning the inclination angle ¸1 of grooves 15a, 25a with respect to axes L of rotation of said first and second pulverizing rollers, an angle of inclination ¸1 of the first pulverizing rollers 15 is smaller than an angle of inclination ¸2 of the second pulverizing rollers 25. Accordingly, the fine paper powder can be produced without incurring a substantial environmental impact.
Inventors:
Matsushita Keisuke
Application Number:
JP2010509609A
Publication Date:
September 01, 2010
Filing Date:
November 02, 2009
Export Citation:
Assignee:
Environmental Management Research Institute, Inc.
International Classes:
B29B13/10; B02C15/08; B02C21/00; B09B3/00; D21B1/08
Domestic Patent References:
| JP2004042032A | 2004-02-12 | |||
| JPS63319066A | 1988-12-27 | |||
| JPH10211618A | 1998-08-11 | |||
| JPH09215937A | 1997-08-19 | |||
| JP2003128163A | 2003-05-08 |
Attorney, Agent or Firm:
Creation International Patent Office