Title:
多層成形体からの熱可塑性芳香族ポリエステル樹脂の回収方法
Document Type and Number:
Japanese Patent JP5368815
Kind Code:
B2
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.
Inventors:
Nanako Kirahara
Kazuyuki Yamane
Kazuyuki Yamane
Application Number:
JP2009018587A
Publication Date:
December 18, 2013
Filing Date:
January 29, 2009
Export Citation:
Assignee:
Kureha Co., Ltd.
International Classes:
B29B17/04; B02C18/14; B07B4/08; B07B13/11; B29B17/00
Domestic Patent References:
| JP2007190481A | ||||
| JP2002200433A | ||||
| JP2006232317A | ||||
| JP2007117837A | ||||
| JP3030877A | ||||
| JP51043267A | ||||
| JP2007044587A |
Attorney, Agent or Firm:
Yasuhide Nomura
Naoto Noda
Naoto Noda