Title:
METHOD FOR RECOVERING THERMOPLASTIC AROMATIC POLYESTER RESIN FROM MULTILAYER MOLDINGS
Document Type and Number:
WIPO Patent Application WO/2010/087104
Kind Code:
A1
Abstract:
A method for recovering, by a dry process, a reusable, high-purity thermoplastic aromatic polyester resin from multilayer moldings which each comprise both a thermoplastic aromatic polyester resin layer and a polyglycolic acid layer. The method comprises: step (1) of subjecting such multilayer moldings to size reduction using a crusher to form small pieces having uniform sizes; step (2) of feeding the small pieces to a dry-type gravity separator provided with an inclined net deck; and step (3) of operating the dry-type gravity separator to recover a thermoplastic aromatic polyester resin component which has been formed by delamination. The crusher includes both a housing equipped with multiple stationary cutting blades and a rotor which is encased in the housing and which is equipped with multiple rotary cutting blades on the periphery at fixed intervals.
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Inventors:
KURUHARA, Nanako (Kureha Corporation 16, Ochiai, Nishiki-machi, Iwaki-sh, Fukushima 86, 〒9748686, JP)
来原なな子 (〒86 福島県いわき市錦町落合１６株式会社クレハ総合研究所内 Fukushima, 〒9748686, JP)
来原なな子 (〒86 福島県いわき市錦町落合１６株式会社クレハ総合研究所内 Fukushima, 〒9748686, JP)
Application Number:
JP2010/000061
Publication Date:
August 05, 2010
Filing Date:
January 07, 2010
Export Citation:
Assignee:
KUREHA CORPORATION (3-3-2, Nihonbashi-Hamacho Chuo-k, Tokyo 52, 〒1038552, JP)
株式会社クレハ (〒52 東京都中央区日本橋浜町三丁目３番２号 Tokyo, 〒1038552, JP)
KURUHARA, Nanako (Kureha Corporation 16, Ochiai, Nishiki-machi, Iwaki-sh, Fukushima 86, 〒9748686, JP)
株式会社クレハ (〒52 東京都中央区日本橋浜町三丁目３番２号 Tokyo, 〒1038552, JP)
KURUHARA, Nanako (Kureha Corporation 16, Ochiai, Nishiki-machi, Iwaki-sh, Fukushima 86, 〒9748686, JP)
International Classes:
B29B17/04; B02C18/14; B07B4/08; B07B13/11; B29B17/00
Attorney, Agent or Firm:
NISHIKAWA, Shigeaki et al. (Visual City 401, 43-9 Higashi-Nippori 3-chome, Arakawa-k, Tokyo 14, 〒1160014, JP)
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