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    41.
    发明专利
    未知

    公开(公告)号：DE69011956D1

    公开(公告)日：1994-10-06

    申请号：DE69011956

    申请日：1990-06-01

    Applicant: TORAY INDUSTRIES

    Inventor： MIMURA TAKASHI ,  TSUNASHIMA KENJI ,  ADACHI KOICHI

    IPC: B41M5/00 ,  B32B5/18 ,  B32B27/08 ,  B41M5/50 ,  B41M5/52 ,  C08J7/04 ,  B41M1/30

    Abstract: Disclosed is a surface porous film which is suited as a base film for printing such as offset printing and for ink-jet recording. The surface porous film of the present invention comprises a plastic base film; and a porous layer formed on at least one of the surfaces of said plastic base film, said porous layer having a peak pore diameter of 0.06 - 2.0 mu m and an undulation index of 0.035 - 0.3 mu m.

    42.
    发明专利
    未知

    公开(公告)号：DE3785204D1

    公开(公告)日：1993-05-06

    申请号：DE3785204

    申请日：1987-09-02

    Applicant: TORAY INDUSTRIES

    Inventor： AOKI SEIZO ,  TSUNASHIMA KENJI ,  YOSHII TOSHIYA ,  NAKAHARA YASUJI ,  SUMIYA TAKASHI ,  MIMURA TAKASHI

    IPC: C08J5/18 ,  B29C55/12 ,  B29K67/00 ,  B29L7/00 ,  B41N1/24

    Abstract: A film for thermal porous printing paper and a thermal porous printing paper composed of the film and a porous support are disclosed. The film comprises a biaxially oriented polyester film having a crystal melting energy, Delta Hu, of 3 to 11 cal/g and showing a difference between the crystal melting completion temperature and crystal melting initiation temperature, delta Tm, of 50 to 100 deg.C. Hence it has such a high heat sensitivity that characters and solid images are distinctly recorded with substantially no unevenness in thickness or density of the images. In addition, since it eliminates the necessity of reducing the thickness of the film.

    POLYESTER FILM AND PHOTOSENSITIVE MATERIAL
    44.
    发明专利
    POLYESTER FILM AND PHOTOSENSITIVE MATERIAL 未知

    公开(公告)号：CA2058244A1

    公开(公告)日：1992-06-22

    申请号：CA2058244

    申请日：1991-12-20

    Applicant: TORAY INDUSTRIES

    Inventor： HIRAOKA TOSHIHIKO ,  TSUNASHIMA KENJI ,  SUZUKI MASARU ,  MIMURA TAKASHI ,  KUROME HIROKAZU

    IPC: B29C55/12 ,  B29D7/01 ,  C08G63/18 ,  G03C1/795

    Abstract: A polyester film comprising a polyester whose dicarboxylic acid copolymerized component contains (i) an aromatic dicarboxylic acid having a metal sulfonate and/or a derivative thereof and (ii) a polyetherdicarboxylic acid represented by the following chemical formula (a) and having a mean molecular weight in the range of 600 to 20000 and/or a derivative thereof. R1OOCCH2-(O-R2)n -OCH2COOR3 (a) Where, "R1" and "R3" are H or alkyl groups each having a carbon number of 1 to 8, "R2" is alkylene group having a carbon number of 2 to 8 and "n" is a positive integer. The polyester film has excellent transparency, mechanical properties and dimensional stability such as those of a PET film and an excellent water absorption property such as that of a TAC film. Therefore, when the film is used as a base film for a photosensitive material, a good curl-extinguishing property as well as good transparency, mechanical properties and dimensional stability of the material can be realized.

    46.
    发明专利
    未知

    公开(公告)号：DE69331734T2

    公开(公告)日：2003-05-08

    申请号：DE69331734

    申请日：1993-12-03

    Applicant: TORAY INDUSTRIES

    Inventor： KIMURA MASAHIRO ,  YAMAUCHI HIDEYUKI ,  TSUNASHIMA KENJI ,  IMAI SHIRO

    IPC: C08J5/18 ,  B32B27/36 ,  B32B15/08

    Abstract: A thermal lamination polyester film with a melting point of 150-250 C, a diethylene glycol content of 0.01-1 wt.% and an intrinsic viscosity [ eta ] of 0.7 or above, which has moldability and impact resistance heretofore unattainable and is excellent in adhesion and flavor retention, thus being suitable as a wrapping material and a container liner.

    48.
    发明专利
    未知

    公开(公告)号：DE69521732D1

    公开(公告)日：2001-08-23

    申请号：DE69521732

    申请日：1995-04-06

    Applicant: TORAY INDUSTRIES

    Inventor： MIYAKAWA KATSUTOSHI ,  TOYODA KATSUYA ,  YAMAMOTO AKIKO ,  TSUNASHIMA KENJI ,  IEKI TOSHIYA

    IPC: B29C47/86 ,  B29C47/88 ,  B29C48/305 ,  B29D7/01 ,  B41N1/24 ,  B29C47/00 ,  B29C47/14

    Abstract: A thermoplastic resin film has a variation in thickness of the film in the longitudinal direction of not more than 5% and a ratio "Pw1/PwT" of the sum of spectral intensities of wave-number components present in the wave-number range of 0.15 to 0.45 (1/m) (Pw1) to the sum of spectral intensities of the full wave-number range (PwT) determined when a wave form of the variation in thickness is subjected to analysis of Fourier transformation of not more than 0.20, and/or a variation in thickness of the film in the longitudinal direction of not more than 5% and a ratio "Pw2/PwT" of the sum of spectral intensities of wave-number components present in the wave-number range of 1.00 to 2.00 (1/m) (Pw2) to the sum of spectral intensities of the full wave-number range (PwT) determined as described above of not more than 0.15. A process for preparing a film which may have either of the above characteristics comprises supplying a thermoplastic resin to a die after heating and melting it at a temperature of not lower than a melting-finishing temperature "Tme"; extending the resin in a manifold of the die in the width direction of the die; cooling the resin in a land of the die at a temperature of lower than the melting-finishing temperature "Tme" and not lower than a crystallization starting temperature caused in cooling "Tcb"; and extruding the resin from the die.

    49.
    发明专利
    未知

    公开(公告)号：DE68925429T3

    公开(公告)日：1999-12-02

    申请号：DE68925429

    申请日：1989-06-23

    Applicant: TORAY INDUSTRIES

    Inventor： AOKI SEIZO ,  TSUNASHIMA KENJI ,  IKEGAMI TETSUO ,  SUGIURA SEIYA ,  SONODA MORISHIGE ,  OTA YUKIO

    IPC: B29C41/26 ,  B29C47/88 ,  B29C55/06

    Abstract: Molten polyester sheet (2) is solidified by cooling it on the surface of a mobile cooling medium on which water film (7) is formed, and the sheet is stretched at least 4.5-fold in overall stretching ratio in a longitudinal direction through a plurality of stretching steps. Since casting is conducted via the water film, water is absorbed in the surface layer and the interior of the cast sheet, thus facilitating orientation by stretching in the longitudinal direction and lowering the stretching temperature. As a result, stretching with a high stretching ratio can be attained by multi-stage stretching without conducting high-temperature stretching. Thus, this process can accelerate film formation, improve productivity, and provide a film having reduced unevenness in thickness, less surface roughness and excellent abrasion resistance.

    50.
    发明专利
    未知

    公开(公告)号：ID21527A

    公开(公告)日：1999-06-24

    申请号：ID981637

    申请日：1998-12-17

    Applicant: TORAY INDUSTRIES

    Inventor： TSUNEKAWA TETSUYA ,  HIGASHIOJI TAKUJI ,  TSUNASHIMA KENJI

    IPC: B29C55/16

    Abstract: The object of the present invention is to provide a method for producing a polyester film excellent in rigidity, toughness, dimensional stability, electric properties, etc. and less in thickness fluctuation and surface defects, hence very suitable as a film for various industrial materials such as magnetic recording media, capacitors, heat transfer ribbons and thermal mimeographic stencil paper. The first method of the present invention is a method for producing a polyester film, in which a film made of a resin mainly composed of a polyester is simultaneously biaxially stretched by a simultaneously biaxially stretching tenter oven, comprising the step of effecting small-ratio stretching at an area stretching ratio of 1.0005 to 3.0 times three times or more, to achieve a total area stretching ratio of 25 to 150 times, and the second method of the present invention is a method for producing a polyester film, in which a film made of a resin mainly composed of a polyester is stretched using a simultaneously biaxially stretching tenter oven, comprising the step of effecting a series of operation consisting of stretching and subsequent relaxation twice to less than 10000 times, to achieve a total area stretching ratio of 25 to 150 times.

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