Process for preparing ground resin particles and apparatus...

Details Process for preparing ground resin particles and apparatus... Process for preparing ground resin particles and apparatus...

2007-07-03

2007-07-03

Banks, Derris H. (Department: 3725)

Solid material comminution or disintegration

Processes

With application of fluid or lubricant material

C241S001000, C241S005000, C241S038000, C241S039000

Reexamination Certificate

active

10297094

ABSTRACT:
A process for preparing ground resin particles is provided by modifying a jet mill with opposed fluidized bed. By using a jet mill having a plurality of jet nozzles disposed at predetermined positions in a barrel of a grinding chamber toward the injection point of the grinding chamber and a bottom wall having a flat surface in part or in whole, parallel to the jet nozzles, or having a conical projection immediately below the injection point, resin particles to be ground are jetted with or without water, thereby being ground to obtain ground resin particles of an intended particle size.

REFERENCES:
patent: 5716751 (1998-02-01), Bertrand et al.
patent: 6007958 (1999-12-01), Ito et al.
patent: 6074741 (2000-06-01), Murata et al.
patent: 6137977 (2000-10-01), Okado et al.
patent: 6861467 (2005-03-01), Nakano
patent: 62-164943 (1987-10-01), None
patent: 10-309529 (1998-11-01), None
International Search Report for PCT/JP01/04542 dated Sep. 4, 2001.
English translation of International Preliminary Examination Report for PCT/JP01/04542 dated Aug. 16, 2002.

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