Title:
METHOD FOR TREATING BIAXIALLY ORIENTATED POLYESTER PRODUCT AND BIAXIALLY ORIENTATED POLYESTER PRODUCT TREATED BY THIS METHOD
Document Type and Number:
Japanese Patent JP2003260742
Kind Code:
A
Abstract:
To enhance gas barrier properties without marring various superb physical properties of a biaxially orientated polyester product.
The gas barrier properties of the biaxially orientated polyester product are enhanced by thermally treating the product at a temperature falling within the range of between (Tg-55°C) and (Tg-5°C) in a carbon dioxide supercritical fluid or a carbon dioxide subcritical fluid, when the glass transition temperature of the biaxially orientated polyester product is given as Tg(°C).
Inventors:
NAMITA YOSHIYUKI
Application Number:
JP2002065332A
Publication Date:
September 16, 2003
Filing Date:
March 11, 2002
Export Citation:
Assignee:
NAMITA YOSHIYUKI
International Classes:
B29C71/02; B29K67/00; (IPC1-7): B29C71/02
Attorney, Agent or Firm:
Shinichi Kikuchi (1 person outside)
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