To recover a plastic that is a sorting object with high purity and at high recovery rate even when impurities are mixed to a mixed plastic.
A recovery box 141 includes a strong triboelectric series product recovery chamber 141D, which is disposed at an end close to a negative electrode 131 for recovering, of a plurality of plastic pieces recovered in a negative electrode-side recovery box 141A, plastic pieces positively-charged more stronger than the other plastic pieces. A mixed plastic 101 containing ABS, SP, heavy PP and trace of PA is charged by a charging cylinder 121 and electrostatically separated by the electrostatic field between the electrodes. The ABS which is easily positively-charged is recovered in the negative electrode-side recovery box 141A, and the PS and heavy PP which are easily negatively-charged are recovered in a positive electrode-side recovery box 141B. Since the PA which is more easily positively-charged than ABS is captured in the strong triboelectric series product recovery chamber 141D, the ABS can be recovered in the negative electrode-side recovery box 141A with high purity and at high recovery rate.
TAKITA HIDENORI
OGASAWARA SHINOBU
FUJISAKI KATSUMI
| JP2009195768A | 2009-09-03 | |||
| JP2003103197A | 2003-04-08 | |||
| JP2002204980A | 2002-07-23 | |||
| JP2000126650A | 2000-05-09 | |||
| JP2000342998A | 2000-12-12 | |||
| JP2002538955A | 2002-11-19 | |||
| JP2009195768A | 2009-09-03 |
| WO2001036101A2 | 2001-05-25 | |||
| WO2001036101A2 | 2001-05-25 |
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