Title:
プラスチック選別方法
Document Type and Number:
Japanese Patent JP4017288
Kind Code:
B2
Abstract:
When plastic pieces of plural different types of resins fed into a hopper are agitated to be triboelectrically charged, the plastic pieces are not imparted with sufficient amounts of charges or proper polarities which are required for separation of the plastic pieces if there are great differences in quantity between the different types of plastic pieces. This makes it impossible to properly separate the plastic pieces. Where the amount of pieces of a particular plastic to be separated is small, pieces of the particular plastic are additionally fed as a triboelectrification agent into a triboelectric charger (3) and agitated with the plastic pieces. Thus, different types of plastic pieces (1) (e.g., PVC and PE) are prevented from being imparted with the same polarity and are imparted with different amounts of charges, so that the separation can assuredly be carried out in an electrostatic separating section (G) for recovery of the particular plastic pieces.
Inventors:
Tetsuya Inoue
Masanori Tsukahara
Daisuke Tamakoshi
Hidehiko Maebata
Masanori Tsukahara
Daisuke Tamakoshi
Hidehiko Maebata
Application Number:
JP16453499A
Publication Date:
December 05, 2007
Filing Date:
June 11, 1999
Export Citation:
Assignee:
Hitachi Zosen Corporation
International Classes:
B03C7/02; B03C7/00; B03C7/06; B29B17/00; B29B17/02
Domestic Patent References:
| JP9299829A | ||||
| JP9299830A | ||||
| JP9094482A | ||||
| JP7178351A |
Attorney, Agent or Firm:
Yoshihiro Morimoto