METHOD AND APPARATUS FOR MANUFACTURING MULTILAYER REFLECTIVE POLARIZER

摘要

A method for manufacturing a reflective polarizer according to the present invention produces a plurality of multilayer combined flows having different mean optical widths by means of a plurality of slit-type extrusion dies, and combines same while in molten states, thereby obviating a separate adhesion layer and/or a protective boundary layer (PBL) in the interior of a core layer, and allowing all S waves in the visible wavelength range to be reflected. Also, formation of a skin layer, on at least one surface of a core layer, while in a molten state obviates a separate adhesion step. Thus, manufacturing costs may be significantly reduced, and optical properties can be favorably maximized within the restricted widths.