Abstract: There are provided a light polarizing film of a grid type, usable for light at a wavelength in a range of a visible light region to an infrared region, and a method of continuously fabricating the same. A PET film 12 was fed via rolls 13, and a mixed liquid containing poly (vinyl alcohol), formaldehyde, ZnO whiskers after metal treatment, and water was applied to the surface of the PET film to a predetermined thickness with the use of a T-die 14, subsequently executing coating while applying shearing stress by varying peripheral velocity of an upper roll 16 of biaxial rolls from that of a lower roll 16? thereof, whereupon the ZnO whiskers were oriented in the longitudinal direction of the film. Thereafter, the film was dried and cured through a constant temperature cell 17 kept at a predetermined temperature, and rolls 18 to be subsequently taken up by a take-up roll 19.

Abstract: There are provided a light polarizing film of a grid type, usable for light at a wavelength in a range of a visible light region to an infrared region, a method of continuously fabricating the same, and a reflective optical film using the light polarizing film. A polypropylene film is passed through rolls 12, a first constant temperature cell 13, and rolls 12? to thereby undergo uniaxial drawing by 4-fold. Thereafter, an aluminum metal is vapor-deposited to a thickness of 100 nm in a vacuum deposition cell 14 to be subsequently passed through rolls 15, a second constant temperature cell 16, and rolls 15?, undergoing uniaxial drawing by 2-fold again while partially crystallizing the polypropylene film. At this point in time, the aluminum metal undergoes substantially uniform cracking in a direction orthogonal to a drawing direction. Thereafter, heat treatment is applied to the film in a third constant temperature cell 17, and the film is subsequently taken out by take-up rolls 18.

Abstract: There are provided a light polarizing film of a grid type, usable for light at a wavelength in a range of a visible light region to an infrared region, a method of continuously fabricating the same, and a reflective optical film using the light polarizing film. A polypropylene film is passed through rolls 12, a first constant temperature cell 13, and rolls 12? to thereby undergo uniaxial drawing by 4-fold. Thereafter, an aluminum metal is vapor-deposited to a thickness of 100 nm in a vacuum deposition cell 14 to be subsequently passed through rolls 15, a second constant temperature cell 16, and rolls 15?, undergoing uniaxial drawing by 2-fold again while partially crystallizing the polypropylene film. At this point in time, the aluminum metal undergoes substantially uniform cracking in a direction orthogonal to a drawing direction. Thereafter, heat treatment is applied to the film in a third constant temperature cell 17, and the film is subsequently taken out by take-up rolls 18.