Patent application number | Description | Published |
20090036667 | CELLULOSE ACYLATE FILM AND METHOD FOR PRODUCING SAME, POLARIZING PLATE, RETARDATION FILM, OPTICAL COMPENSATORY FILM, ANTI-REFLECTION FILM, AND LIQUID CRYSTAL DISPLAY DEVICE - A cellulose acylate film is stretched in the longitudinal direction by 1-300% under such conditions that the ration of the stretching distance (L) to the width (W) of the film before stretching, i.e., length/width ratio (L/W), is higher than 0.01 and lower than 0.3. The film stretched is relaxed in the longitudinal direction by 1-50% to produce a cellulose acylate film. When this film is incorporated in a liquid-crystal display, it can prevent the occurrence of color unevenness even when used in an high-temperature high-humidity atmosphere. | 02-05-2009 |
20090115100 | METHOD FOR PRODUCING THERMOPLASTIC FILM - The present invention provides a method for producing a thermoplastic film which makes it possible to improve the optical properties of the thermoplastic film obtained by stretching and a thermoplastic film manufactured thereby. The transverse stretching section in which a cellulose acylate film is transversely stretched includes: a preheating zone, a transverse stretching zone, a cooling zone and a thermal relaxation zone, and the cellulose acylate film having been cooled in the cooling zone is immediately subjected to thermal relaxation treatment in the thermal relaxation zone. | 05-07-2009 |
20090161214 | THERMOPLASTIC RESIN FILM AND METHOD FOR MANUFACTURING THE SAME - According to an aspect of the present invention, since there are a film formation step for forming a film by cooling and solidifying a thermoplastic resin sheet by sandwiching it between a cooling roller and a press roller; and a drawing step for drawing the resultant film uniaxially or biaxially, it is possible to obtain a thermoplastic resin film for optical use having good thickness accuracy and optical characteristics uniform in the width and length directions. | 06-25-2009 |
20090187000 | METHOD FOR PRODUCING CELLULOSE ACYLATE RESIN FILM - A cellulose acylate resin film which can suppress generation of color nonuniformity even after exposure to high temperature and high humidity when incorporated in a liquid crystal display element can be produced. The cellulose acylate resin film is heat-treated at a temperature of Tg−30° C. to Tg+20° C., Tg representing the glass transition temperature of the cellulose acylate resin, for 10 seconds to 600 seconds while conveying the cellulose acylate resin film at a tension of 2 N/cm | 07-23-2009 |
20090268292 | THERMOPLASTIC RESIN FILM AND METHOD FOR PRODUCING THE SAME - There is provided a thermoplastic resin film having a retardation close to 0 nm, in particular, a thermoplastic resin film having a retardation close to 0 nm, thereby showing a small optical anisotropy, and a method for producing the same. The method for producing a thermoplastic resin film includes a step of heat treating a thermoplastic resin film | 10-29-2009 |
20100015395 | METHOD FOR PRODUCING CELLULOSE ACYLATE FILM AND OPTICAL COMPENSATION FILM FOR LIQUID CRYSTAL DISPLAY PLATE PRODUCED BY USING THE METHOD - According to the present invention, a cellulose acylate film having high thickness precision and no streaks can be formed by producing a film with a cellulose acylate resin by means of the polishing roller method, and a high-performance optical film, which is free from the retardation distribution, can be produced by subsequently stretching the cellulose acylate film thus obtained within a magnification range from 1 or more and 2.5 or less. | 01-21-2010 |
20100022764 | METHOD AND APPARATUS FOR PRODUCING CELLULOSE ACYLATE FILM, AND CELLULOSE ACYLATE FILM - According to the present invention, the adaptability to producing the cellulose acylate film and the surface properties of the cellulose acylate film produced by means of the melt film-forming method can be remarkably improved. Accordingly, there is also improved the surface properties of a stretched cellulose acylate film produced by stretching such an unstretched cellulose acylate film. | 01-28-2010 |
20100032866 | METHOD FOR PRODUCING THERMOPLASTIC RESIN FILM - There is provided a method for producing a thermoplastic resin film that can suppress the occurrence of color nonuniformity in the produced thermoplastic resin film even when the film is incorporated into liquid crystal display devices and exposed to high temperature and high humidity over time. Heat treatment is conducted for the thermoplastic resin film at a temperature of Tg−30° C. or higher and Tg+20° C. or lower, Tg representing the glass transition temperature of the thermoplastic resin, for 10 seconds to 600 seconds while conveying the thermoplastic resin film at a tension of 2 N/cm | 02-11-2010 |
20100188619 | METHOD FOR PRODUCING THERMOPLASTIC FILM AND OPTICAL COMPENSATION FILM FOR LIQUID CRYSTAL DISPLAY PANELS PRODUCED BY USING THE METHOD - There is provided a method for producing a thermoplastic film, which can suppress the occurrence of residual strain in the film caused by the polishing roller method to prevent the occurrence of stretch non-uniformity in stretching operation and provide a film that has excellent optical characteristics. The molten resin extruded from a die into a sheet is fed between a pair of polishing rollers and cooled while being held and pressed between them so that a cellulose acylate film is formed. The surface of the polishing roller is made up of a fluorine resin. | 07-29-2010 |
20150013766 | POLYESTER FILM, BACK SHEET FOR SOLAR CELL, AND SOLAR CELL MODULE - The invention provides a polyester film including: a polyester substrate; and a layered portion that is disposed on at least one surface of the polyester substrate and has an elastic modulus of from 5 MPa to 800 MPa, a ratio of a peak intensity at 988 cm | 01-15-2015 |