Patent ID: 9128247
Filing Date: 2015-09-08
Classification: B29D,G02B,G02F

Abstract:
1. A method of producing a polarizing layered film, the method comprising: a coating step of applying a solution containing a polyvinyl alcohol resin onto one surface of a base material film to form a resin coated layer, and a drying step of drying the resin coated layer to form a resin layer, wherein in the coating step, un-coated portions on which said solution is not applied are formed in regions each being 0.5 cm or more separated inward from each of the base material film's edges opposing each other along the width direction of the base film, wherein the un-coated portions each extend to 20 cm or less inward from each of the opposing edges, a removal step of removing un-coated portions from the layered film by cutting a base material film, a stretching step of uniaxially stretching the layered film from which the un-coated portions have been removed to obtain a stretched film, and a coloring step of coloring a resin layer of the stretched film with a dichroic coloring matter to form a polarizer layer, in this order.