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Title:
USE OF SPECIAL SCREEN IN PREPARATION OF CELLULOSE POWDER
Document Type and Number:
Japanese Patent JP2013223865
Kind Code:
A
Abstract:

To provide an improved method for the preparation of cellulose powder which provides easy handling and high output of cellulose powder with desired particle size.

A screen comprising at least two layers of different mesh or pore size is used in a cellulose powder preparation method. The screen has one screening layer and one supporting layer providing mechanical stability to the screening layer, wherein the mesh or pore size of the screening layer is less than 250 μm, and the screening layer has a coarser mesh or pore size than the screening layer, the mesh or pore size ratio of the two layers is from 1.05:1 to 30:1, the screening layer is sintered to the supporting layer, the two layers are inseparable from each other over the whole area, and cellulose is sieved in dry state.


Inventors:
BEER WOLFGANG
SCHNEIDER HANS-PETER
MERZ GUNNAR R
KRUSE PETER
Application Number:
JP2013112697A
Publication Date:
October 31, 2013
Filing Date:
May 29, 2013
Export Citation:
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Assignee:
DOW GLOBAL TECHNOLOGIES LLC
International Classes:
B07B1/00; B07B1/46; C08B11/00; C08B13/00; C08B15/08
Domestic Patent References:
JP2006053515A2006-02-23
JPS63130173U1988-08-25
JPH01217001A1989-08-30
JPH0217530U1990-02-05
JPH08131875A1996-05-28
JPH06136001A1994-05-17
JPH01217001A1989-08-30
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Nagasaka Tomoyasu
Yoshihiro Kobayashi
Atsushi Ebiya