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Title:
FORMING METHOD ALIPHATIC POLYESTER FILM
Document Type and Number:
Japanese Patent JP2012096529
Kind Code:
A
Abstract:

To provide a forming method of an aliphatic polyester film which is not only small in thickness variation, excellent in planarity, small in variations of mechanical properties in longitudinal and lateral directions and optical properties but also being capable of accelerating the speed of casting.

An aliphatic polyester film is obtained by melt-extruding an aliphatic polyester in a shape of a film 3 and sticking the full width of the film 3 to a cast drum 2 after inhibiting variations of the landing point of an edge on the cast drum 2 while controlling an entrained air stream between the cast drum 2 and the film 3.


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Inventors:
YAMAUCHI HIDEYUKI
MASUDA JUNICHI
ENDO YOSHIKAZU
KITAMURA OSAMU
Application Number:
JP2011204251A
Publication Date:
May 24, 2012
Filing Date:
September 20, 2011
Export Citation:
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Assignee:
TORAY INDUSTRIES
International Classes:
B29C48/08; B29C48/305; B29C48/92; B29K67/00; B29L7/00



 
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