PLASTIC CHIP SEPARATOR - HITACHI SHIPBUILDING ENG CO

Title:

PLASTIC CHIP SEPARATOR

Document Type and Number:

WIPO Patent Application WO/2000/074855

Kind Code:

A1

Abstract:

An apparatus is provided for accurately sorting pulverized plastic chips of different kinds by electrostatic selection. The apparatus comprises a sorter (40) for sorting plastic chips according to size, a triboelectrification device (17), a pair of drum type electrostatic separators (41), and collectors (26) arranged under the electrostatic separators. The structure of partitions (52-55) that separates the collectors can be horizontally moved depending on where plastic chips (16) having different polarities and charges fall. There is no need for varying the voltage of a high-voltage supply (24) to separate chips accurately.

Inventors:

MAEHATA HIDEHIKO (JP)
INOUE TETSUYA (JP)
DAIKU HIROYUKI (JP)
TSUKAHARA MASANORI (JP)
TAMAKOSHI DAISUKE (JP)

Application Number:

PCT/JP2000/001727

Publication Date:

December 14, 2000

Filing Date:

March 21, 2000

Export Citation:

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Assignee:

HITACHI SHIPBUILDING ENG CO (JP)
MAEHATA HIDEHIKO (JP)
INOUE TETSUYA (JP)
DAIKU HIROYUKI (JP)
TSUKAHARA MASANORI (JP)
TAMAKOSHI DAISUKE (JP)

International Classes:

B03C7/00; B03C7/02; B03C7/06; B29B17/00; B29B17/02; (IPC1-7): B03C7/02; B03C7/06; B29B17/00

Foreign References:

JPH09299827A	1997-11-25
JPH10323580A	1998-12-08
JPS5732748A	1982-02-22

Other References: