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Title:
METHOD FOR PRODUCING FILM
Document Type and Number:
Japanese Patent JP2006342228
Kind Code:
A
Abstract:

To provide a method for producing a film by which the film formation even of a resin or a resin composition exhibiting no or low ductility can be carried out efficiently.

The method for producing the film by a solution-casting method comprises at least following steps (1) to (3): (1) a step for casting a resin solution on a base material at three or more independent positions while regulating the interval so as to be ≥10 mm; (2) a step for primarily drying the base material obtained in the step (1) as it is to form a film of the resin solution, and winding the base material while carrying the film on the base material into a roll shape; and (3) a step for unwinding the roll-shaped base material obtained in the step (2), secondarily drying the films except the films positioned at both edge parts on the base material, and winding the secondarily dried film into a roll shape.


Inventors:
TOYOMASU NOBUYUKI
Application Number:
JP2005168006A
Publication Date:
December 21, 2006
Filing Date:
June 08, 2005
Export Citation:
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Assignee:
TOSOH CORP
International Classes:
C08J5/18; B29C41/24; C08L35/00; B29L7/00



 
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