GRINDING BEADS AND BEADS PRODUCTION METHOD AND DEVICE THEREFOR

WIPO Patent Application WO/2000/045994

A1

Grinding or separating beads which are easy to adjust in grain size, consist of amorphous polyhedral slender elements suitable for instantaneous separation, and have classification-based homogeneous grain sizes. The beads production device comprising crusher units (11) for roughly crushing platy moldings of thermosetting resin into a dice- or pellet-form and a roll-type crushing unit (16). The crushing unit (16) comprises multi-stage crushing rolls (31 to 33) in which irregularities (36) formed on the surfaces of each pair of facing rolls are phase-deviated at 1/2 of a pitch and which crushes coarsely-crushed thermosetting-resin pieces into specified sizes. Classifying devices (20, 21, 22) disposed downstream the crushing unit (16) classify the resultant pieces to provide beads which are homogenized according to classification and which consist of amorphous polyhedral slender elements having sharp ridges.

WO/2023/165152	DOUBLE-ROLLER CRUSHER
WO/2018/134057	ROLLER PRESS
WO/2020/189988	METHOD FOR MANUFACTURING FIBER SHEET FOR RECYCLING WOVEN WASTE FABRIC

TOMIOKA NAOYOSHI (JP)

PCT/JP2000/000516

August 10, 2000

January 31, 2000

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BRIDGESTONE CORP (JP)
TOMIOKA NAOYOSHI (JP)

B02C4/02; B02C23/10; (IPC1-7): B24C11/00; C08J3/12

JPH10309669A	1998-11-24
JPH10140144A	1998-05-26
JPH09225836A	1997-09-02
JPS5937055A	1984-02-29
JPS5946670U	1984-03-28
JPS5966571U	1984-05-04
JPH083542A	1996-01-09
JPS59227970A	1984-12-21
JPS61241069A	1986-10-27

Asakura, Masayuki (Nishi-shimbashi 1-chome Minato-ku Tokyo, JP)

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