Title:
PLASTIC MATERIAL DISCRIMINATION APPARATUS
Document Type and Number:
Japanese Patent JP3806163
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a material discrimination apparatus by which plastics with a small specific-gravity difference can be sorted and by which the plastics can be sorted without being broken into pieces by a method wherein a material is discrimninated on the basis of the absorbance of a specific wavelength by the plastics.
SOLUTION: In a pretreatment and sorting device 21, caps or the like out of waste plastics are sorted, bottles or trays are pretreated mechanically, and the accuracy of a near-infrared discrimination device 29 on the downstream side is enhanced. In addition, in the device 29, bottles as samples which are aligned are irradiated with near-infrared rays by a light source 31, a quantity of transmitted light at a wavelength peculiar to the samples by a spectroscope 33 is received by a photodetector 32, the absorbance of every wavelength at every sample is computed, and a material is discriminated. Then, a sorting device 30 with a sorting box 40 sorts and houses various kinds of plastics discriminated by the device 29 by using the high-pressure air from a pulse air nozzle 41.
Inventors:
Kenichi Yoneda
Mitsui Shoji
Hirabayashi
Noboru Yamamoto
Yonezawa Futoto
Mitsui Shoji
Hirabayashi
Noboru Yamamoto
Yonezawa Futoto
Application Number:
JP24413995A
Publication Date:
August 09, 2006
Filing Date:
September 22, 1995
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
G01N21/35; B07B4/08; B07B9/00; B07B13/00; B07C5/342; B09B5/00; B29B17/00; G01N21/3563; G01N21/359; B29K105/26; (IPC1-7): G01N21/35; B07B13/00; B07C5/342; B09B5/00; B29B17/00; //B29K105:26
Domestic Patent References:
| JP61192380A | ||||
| JP3174283A | ||||
| JP427476A | ||||
| JP4204354A | ||||
| JP6210632A | ||||
| JP6308022A | ||||
| JP6327998A | ||||
| JP7151603A | ||||
| JP6506149A |
Foreign References:
| US5134291 |
Other References:
「近赤外分光分析技術を利用した「廃プラスチック分別・分離技術」」クリーンジャパン 111 財団法人クリーン・ジャパン・センター 1995年3月15日 p.66-69
「近赤外分光分析法によるプラスチック・ボトルの樹脂別自動分別システム」都市と廃棄物 株式会社環境産業新聞社出版部 1993年12月1日 第23巻第12号(通巻第265号) p.48-51
「近赤外分光分析法によるプラスチック・ボトルの樹脂別自動分別システム」都市と廃棄物 株式会社環境産業新聞社出版部 1993年12月1日 第23巻第12号(通巻第265号) p.48-51
Attorney, Agent or Firm:
Shigemitsu Tanaka
Shin Ishikawa
Takehiko Suzue
Satoshi Kono
Sadao Muramatsu
Ryo Hashimoto
Tetsuya Kazama
Shin Ishikawa
Takehiko Suzue
Satoshi Kono
Sadao Muramatsu
Ryo Hashimoto
Tetsuya Kazama