Westerman, Hattori, Daniels & Adrian, LLP
Method of manufacturing polarizing plate
The present invention provides a method of manufacturing a polarizing plate having sufficient heat resistance, without deteriorating the dye-affinity and the like of the polarizing film and without the necessity of transferring or detaching the polarizing film. Provided is a method of manufacturing a polarizing plate (10) that includes a polyester resin base (11) and a polarizing film including a polyvinyl alcohol resin laminated on the polyester resin base. The method includes the steps of: stretching a laminate that includes a polyvinyl alcohol resin layer (12) laminated on the polyester resin base (11); dyeing the polyvinyl alcohol resin layer (12); and crystallizing the polyester resin base (11). The crystallization step is performed after the dyeing step.
NITTO DENKO CORPORATION
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G02B G02B B29K B29C B29C B29K G02B B29C
inventional inventional additional inventional additional additional inventional inventional
Takashi Tomohiro Takeharu Shusaku Takashi Hitoshi Nobuyuki Minoru
Shimizu Mori Kitagawa Goto Kamijo Kitagishi Haida Miyatake