Title:
ポリエステルフィルムの回収方法、回収装置及び機能層除去剤
Document Type and Number:
Japanese Patent JP7196901
Kind Code:
B2
Abstract:
To provide a polyester film recovery method, a recovery device and a functional layer removal agent that capable of peeling a functional layer and recovering a substrate film.SOLUTION: A polyester film recovery method includes: a functional layer removal step (A) of cleaning, with a cleaning agent containing (a) an alkalinizing agent and (b) a compatibilizing agent, a layered polyester film comprising a functional layer on a surface of a polyester film, thereby removing the functional layer; and a recovery step (B) of recovering the polyester film from which the functional layer has been removed.SELECTED DRAWING: None
Inventors:
Toshihiro Kai
Tomohiro Suzuki
Kiyonori Kuroda
Tomohiro Suzuki
Kiyonori Kuroda
Application Number:
JP2020208861A
Publication Date:
December 27, 2022
Filing Date:
December 16, 2020
Export Citation:
Assignee:
Mitsubishi Chemical Corporation
International Classes:
C08J11/08; B29B17/02
Domestic Patent References:
| JP2000025041A | ||||
| JP2006088334A | ||||
| JP2005321537A | ||||
| JP9271748A | ||||
| JP51115577A | ||||
| JP54066985A | ||||
| JP53094381A | ||||
| JP2010065230A | ||||
| JP11060795A | ||||
| JP2001310970A |
Foreign References:
| WO2017154098A1 | ||||
| WO2020059516A1 |
Attorney, Agent or Firm:
Masahiro Taguchi
Shigeo Torayama
Shigeo Torayama
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