Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD OF MOLDING WASTE PLASTIC AND METHOD OF PYROLYZING WASTE PLASTIC
Document Type and Number:
WIPO Patent Application WO/2007/125626
Kind Code:
A1
Abstract:
A waste plastic is molded to produce high-density granules. The granules are mixed with coal and the mixture is pyrolyzed in a coke oven to produce a high-strength coke. The waste plastic to be used as a raw material may be one comprising polyethylene, polypropylene, and polystyrene, which are plastics softening at a low temperature, in a total proportion of 50% or higher. This waste plastic is molded by a molding method in which the waste plastic is treated with a screw extruder and extruded from a nozzle. In the method, the waste plastic in the extruder is heated to a temperature of 180-260°C and gases in the extruder are sucked. By this operation, the polyethylene, polypropylene, and polystyrene are brought into a molten state and gases contained in the plastic are diminished. The plastic in this state is extruded from a nozzle having a diameter of 15-60 mm to thereby compression-mold it. Thereafter, the extrudate is cut and is cooled with a water cooler within three seconds after the cutting.

Inventors:
IBARAKI, Tetsuharu (1 Kimitsu, Kimitsu-sh, Chiba 41, 2991141, JP)
茨城 哲治 (〒41 千葉県君津市君津1番地 新日本製鐵株式会社 君津製鐵所内 Chiba, 2991141, JP)
KOSEKI, Tsuneo (1 Kimitsu, Kimitsu-sh, Chiba 41, 2991141, JP)
小関 常雄 (〒41 千葉県君津市君津1番地 新日本製鐵株式会社 君津製鐵所内 Chiba, 2991141, JP)
TOODA, Yuuji (1 Kimitsu, Kimitsu-sh, Chiba 41, 2991141, JP)
遠田 祐治 (〒41 千葉県君津市君津1番地 新日本製鐵株式会社 君津製鐵所内 Chiba, 2991141, JP)
HIROMATSU, Takashi (1 Kimitsu, Kimitsu-sh, Chiba 41, 2991141, JP)
廣松 隆 (〒41 千葉県君津市君津1番地 新日本製鐵株式会社 君津製鐵所内 Chiba, 2991141, JP)
Application Number:
JP2006/323041
Publication Date:
November 08, 2007
Filing Date:
November 13, 2006
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NIPPON STEEL CORPORATION (6-3 Otemachi 2-chome, Chiyoda-ku Tokyo, 71, 1008071, JP)
新日本製鐵株式会社 (〒71 東京都千代田区大手町二丁目6番3号 Tokyo, 1008071, JP)
IBARAKI, Tetsuharu (1 Kimitsu, Kimitsu-sh, Chiba 41, 2991141, JP)
茨城 哲治 (〒41 千葉県君津市君津1番地 新日本製鐵株式会社 君津製鐵所内 Chiba, 2991141, JP)
KOSEKI, Tsuneo (1 Kimitsu, Kimitsu-sh, Chiba 41, 2991141, JP)
小関 常雄 (〒41 千葉県君津市君津1番地 新日本製鐵株式会社 君津製鐵所内 Chiba, 2991141, JP)
TOODA, Yuuji (1 Kimitsu, Kimitsu-sh, Chiba 41, 2991141, JP)
遠田 祐治 (〒41 千葉県君津市君津1番地 新日本製鐵株式会社 君津製鐵所内 Chiba, 2991141, JP)
HIROMATSU, Takashi (1 Kimitsu, Kimitsu-sh, Chiba 41, 2991141, JP)
International Classes:
B29B9/10; B29B9/06; B29B17/00; C08J11/12; C10B53/07; C10B57/04; C10L5/48
Attorney, Agent or Firm:
AOKI, Atsushi et al. (SEIWA PATENT & LAW, Toranomon 37 Mori Bldg.5-1, Toranomon 3-chom, Minato-ku Tokyo 23, 1058423, JP)
Download PDF: