Title:
METHOD OF SEPARATING PLASTIC
Document Type and Number:
WIPO Patent Application WO/2000/029119
Kind Code:
A1
Abstract:
When different kinds of plastic chips, where the difference in quantity among the kinds is great, are agitated for triboelectrification, the plastic chips are not given sufficient charge or polarity, resulting in the difficultly sorting plastic chips. If a specific kind of plastic chips to be collected is small in quantity, therefore, the same plastic chips as electrification assistant are supplied in a triboelectrification device (3). As a result, different kinds of plastic chips (1) (for example, PVC and PE) are charged differently, rather than the same polarity, and reliable separation can be performed in an electrostatic separator (G) for recovering specific plastic chips.
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Inventors:
Maehata, Hidehiko (Hitachi Zosen Corporation 7-89, Nanko-kita 1-chome Suminoe-ku Osaka-shi, Osaka, 559-0034, JP)
Inoue, Tetsuya (Hitachi Zosen Corporation 7-89, Nanko-kita 1-chome Suminoe-ku Osaka-shi, Osaka, 559-0034, JP)
Tsukahara, Masanori (Hitachi Zosen Corporation 7-89, Nanko-kita 1-chome Suminoe-ku Osaka-shi, Osaka, 559-0034, JP)
Tamakoshi, Daisuke (Hitachi Zosen Corporation 7-89, Nanko-kita 1-chome Suminoe-ku Osaka-shi, Osaka, 559-0034, JP)
Inoue, Tetsuya (Hitachi Zosen Corporation 7-89, Nanko-kita 1-chome Suminoe-ku Osaka-shi, Osaka, 559-0034, JP)
Tsukahara, Masanori (Hitachi Zosen Corporation 7-89, Nanko-kita 1-chome Suminoe-ku Osaka-shi, Osaka, 559-0034, JP)
Tamakoshi, Daisuke (Hitachi Zosen Corporation 7-89, Nanko-kita 1-chome Suminoe-ku Osaka-shi, Osaka, 559-0034, JP)
Application Number:
PCT/JP1999/006373
Publication Date:
May 25, 2000
Filing Date:
November 15, 1999
Export Citation:
Assignee:
HITACHI ZOSEN CORPORATION (7-89, Nanko-kita 1-chome Suminoe-ku Osaka-shi, Osaka, 559-0034, JP)
Maehata, Hidehiko (Hitachi Zosen Corporation 7-89, Nanko-kita 1-chome Suminoe-ku Osaka-shi, Osaka, 559-0034, JP)
Inoue, Tetsuya (Hitachi Zosen Corporation 7-89, Nanko-kita 1-chome Suminoe-ku Osaka-shi, Osaka, 559-0034, JP)
Tsukahara, Masanori (Hitachi Zosen Corporation 7-89, Nanko-kita 1-chome Suminoe-ku Osaka-shi, Osaka, 559-0034, JP)
Tamakoshi, Daisuke (Hitachi Zosen Corporation 7-89, Nanko-kita 1-chome Suminoe-ku Osaka-shi, Osaka, 559-0034, JP)
Maehata, Hidehiko (Hitachi Zosen Corporation 7-89, Nanko-kita 1-chome Suminoe-ku Osaka-shi, Osaka, 559-0034, JP)
Inoue, Tetsuya (Hitachi Zosen Corporation 7-89, Nanko-kita 1-chome Suminoe-ku Osaka-shi, Osaka, 559-0034, JP)
Tsukahara, Masanori (Hitachi Zosen Corporation 7-89, Nanko-kita 1-chome Suminoe-ku Osaka-shi, Osaka, 559-0034, JP)
Tamakoshi, Daisuke (Hitachi Zosen Corporation 7-89, Nanko-kita 1-chome Suminoe-ku Osaka-shi, Osaka, 559-0034, JP)
International Classes:
B03C7/02; B03C7/00; B03C7/06; B29B17/00; B29B17/02; (IPC1-7): B03C7/02; B29B17/00
Attorney, Agent or Firm:
Morimoto, Yoshihiro (All Nippon Airways Building 4th floor 10-10, Nishi-Hommachi 1-chome Nishi-ku, Osaka-shi Osaka, 550-0005, JP)
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