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Title:
POLYLACTIC ACID BOTTLE SEPARATION AND RECOVERY METHOD
Document Type and Number:
WIPO Patent Application WO/2019/082684
Kind Code:
A1
Abstract:
The polylactic acid bottle separation and recovery method according to the present invention is a method for separating and recovering polylactic acid bottles from used plastic bottles, the method being characterized in that near-infrared measurement is performed upon the used plastic bottles in a wavelength range of 1,600–1,800 nm, and used bottles exhibiting two absorption peaks, a short-wavelength absorption peak observed around 1,680 nm and a long-wavelength absorption peak observed around 1,718 nm, are recovered as polylactic acid bottles.

Inventors:
ITO, Takuro (18-1, Higashi-Gotanda 2-chome, Shinagawa-k, Tokyo 27, 〒1418627, JP)
KUNIEDA, Hiroki (18-1, Higashi-Gotanda 2-chome, Shinagawa-k, Tokyo 27, 〒1418627, JP)
FUJIKAWA, Takuya (Technical Center, 1-70, Yako 1-chome, Tsurumi-ku, Yokohama-sh, Kanagawa 01, 〒2300001, JP)
Application Number:
JP2018/038035
Publication Date:
May 02, 2019
Filing Date:
October 12, 2018
Export Citation:
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Assignee:
TOYO SEIKAN GROUP HOLDINGS, LTD. (18-1, Higashi-Gotanda 2-chome Shinagawa-k, Tokyo 27, 〒1418627, JP)
TOYO SEIKAN CO., LTD. (18-1, Higashi-Gotanda 2-chome Shinagawa-k, Tokyo 40, 〒1418640, JP)
International Classes:
G01N21/359; B07C5/342
Foreign References:
JP2001124696A2001-05-11
JP2013178128A2013-09-09
JP2002214136A2002-07-31
US8574384B12013-11-05
Other References:
ULRICI A ET AL.: "Efficient chemometric strategies for PET-PLA discrimination in recycling plants using hyperspectral imaging", CHEMOMETRICS AND INTELLIGENT LABORATORY SYSTEMS, vol. 122, 17 January 2013 (2013-01-17), pages 31 - 39, XP028985596, Retrieved from the Internet DOI: doi:10.1016/j.chemolab.2013.01.001
FURUKAWA T ET AL.: "Evaluation of Homogeneity of Binary Blends of Poly(3-hydroxybutyrate) and Poly(L-lactic acid) Studied by Near Infrared Chemical Imaging (NIRCI", ANALYTICAL SCIENCES, vol. 23, 10 July 2007 (2007-07-10), pages 871 - 876, XP055597195
MULBRY W ET AL.: "Use of mid- and near-infrared spectroscopy to track degradation of bio-based eating utensils during composting", BIORESOURCE TECHNOLOGY, vol. 109, 16 January 2012 (2012-01-16), pages 93 - 97, XP028461614, DOI: doi:10.1016/j.biortech.2012.01.029
Attorney, Agent or Firm:
ONO, Hisazumi et al. (Nishi-Shimbashi Daiichi Hoki bldg, 5-2 Nishi-Shimbashi 3-chome, Minato-k, Tokyo 03, 〒1050003, JP)
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