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    LAMINATED POLYESTER FILM AND HARDCOAT FILM
    1.
    发明专利
    LAMINATED POLYESTER FILM AND HARDCOAT FILM 未知

    公开(公告)号：MY173176A

    公开(公告)日：2020-01-02

    申请号：MYPI2013701252

    申请日：2012-01-11

    Applicant: TORAY INDUSTRIES

    Inventor： MATSUNAGA ATSUSHI ,  KURIHARA TSUTOMU ,  OKOCHI MOTOHIRO

    Abstract: [Problem] To provide: a layered polyester film which shows highly long-lasting adhesion of various kinds to hardcoat layers having various functions represented by a UV-absorbing function , etc. and which shows satisfactory appearance properties due to diminished interference unevenness; and a hardcoat film. [Solution] A Laminated polyester film which comprises a substrate polyester film (layer S) with at least one surface being laminated with a lamination layer (layer C) comprising a polyester resin as a primary component, the surface of the lamination layer (layer C) having a wetting tension of 35-45 mN/m and the polyester resin contained in the lamination layer (layer C) meeting the following requirements (a) to (c). (a) The lamination layer (layer C) contains polyesters (A) having a glass transition temperature (Tg) ofl 10-140?C and polyesters (B) having a glass transition temperature (Tg) of 40-90?C. (b) At least either polyesters (A) or polyesters (B) contains both a monomer having a sulfonic acid component and a monomer having a multivalent, i.e., tri- or higher-valent, carboxylic acid component, and (c) The mixing ratio between polyesters (A) and polyesters (B) is from 10/90 to 60/40.

    METHOD FOR STRETCHING FILM
    3.
    发明公开
    METHOD FOR STRETCHING FILM 审中-公开
    程序强制执行的薄膜

    公开(公告)号：EP2689914A4

    公开(公告)日：2014-11-19

    申请号：EP12761132

    申请日：2012-02-08

    Applicant: TORAY INDUSTRIES

    Inventor： KUSUNOKI YOHEI ,  HANADA TETSUJI ,  KURIHARA TSUTOMU

    IPC: B29C55/06 ,  B29L7/00

    CPC classification number: B29D7/01 ,  B29B13/023 ,  B29C55/06 ,  B29C2035/0822

    Abstract: The purpose of the present invention is to provide a method for stretching a thermoplastic resin film that is suitable for use particularly in optical applications, that has excellent uniformity of thickness in the longitudinal direction and width direction, and that has minimal scratches such as adhesion scratch or transcription scratch. This purpose is achieved by a method for stretching a film in the longitudinal direction by a difference in circumferential speed between front and rear rollers, wherein infrared rays are emitted to the film by concentration heaters from above the film and below the film, and the film is longitudinally stretched, the longitudinally-directed length of the film surface over which converged infrared rays are emitted from above the film being a, the longitudinally-directed length of the film surface over which converged infrared rays are emitted from below the film being b, the a component and b component overlapping each other, and a and b both being 10 mm to 40 mm.

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