Solution casting method for producing polymer film and...

Details Solution casting method for producing polymer film and... Solution casting method for producing polymer film and...

2005-05-24

2010-12-21

Michener, Jennifer K (Department: 1795)

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

By casting liquids on a solid supporting or shaping surface

C264S316000, C425S089000

Reexamination Certificate

active

07854872

ABSTRACT:
A suction roller (65) is used as a drive roller for feeding a film in a solution casting method. The suction roller (65) has a surface (65a) on which a plurality of circular suction holes (91) is formed. The suction hole (91) has a diameter of 4 mm and a chamfered edge. The width of chamfer is 10% in ratio to the diameter of the hole. The surface (65a) is hardened by chrome plating so as to have a hardness of 900 in Vicars hardness. A roller temperature controller (100) is provided near the suction roller (65) to control the surface temperature of the roller by the air supply. The surface temperature of the suction roller (65) is about 10° C. higher than temperature of the film (61)immediately before contacting to the suction roller (65).

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