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    LAMINATED FILM STRUCTURE
    1.
    发明专利
    LAMINATED FILM STRUCTURE 失效

    公开(公告)号：JPH09183202A

    公开(公告)日：1997-07-15

    申请号：JP2646197

    申请日：1997-02-10

    Applicant: TORAY INDUSTRIES

    Inventor： MINAMI TOMOYUKI ,  HAYASHI KENJI ,  YOSHII TOSHIYA

    IPC: C08J5/18 ,  B32B7/02 ,  B32B27/08 ,  B32B27/36 ,  C08G75/06 ,  C08G75/14 ,  H01B3/30

    Abstract: PROBLEM TO BE SOLVED: To obtain a film which has good heat resistance in spite of its thinness and is suitable for various industrial applications in view of its good heat insulation by a method in which on both sides of a polyester film as a support, polyphenylene sulfide films which are thinner than the polyester film are laminated. SOLUTION: On both sides of a film of a polyester or a copolyester as a support film, polyphenylene sulfide films which are thinner than the support film are laminated. These films are preferably bonded together by adhesive force of 0.1-2.0g/cm to form a film laminate. Moreover, in the film laminate, a metal film can be formed at least on one side. When a laminated film structure is to be manufactured, in a coextrusion method, both T-die and inflation method are applicable. For lamination parts, all the methods of an adopter part, the inside of a die, and the outside of a die are applicable.

    MANUFACTURE OF POLYESTER FILM
    6.
    发明专利
    MANUFACTURE OF POLYESTER FILM 失效

    公开(公告)号：JPS58145421A

    公开(公告)日：1983-08-30

    申请号：JP2737082

    申请日：1982-02-24

    Applicant: TORAY INDUSTRIES

    Inventor： TANAKA KAZUHIRO ,  NISHIOKA TAKESHI ,  MINAMI TOMOYUKI

    IPC: B29C49/00 ,  B29C55/00 ,  B29C55/16 ,  C08J5/18

    Abstract: PURPOSE:To manufacture stably at a high speed the titled film which is free from the unevenness in stretch, thin and has a high strength, by stretching simultaneously an amorphous polyester film biaxially in both longitudinal and lateral directions at a specified temperature, further stretching it simultaneously and biaxially at a lower temperature than the first time. CONSTITUTION:The desired film is obtained, making a total stretch ratio more than 33 times, by melt-extruding a polyester (e.g.; polyethylene terephthalate etc.), then making a non-crystalline film by quenching, stretching this amorphous polyester film simultaneously and biaxially in both longiturinal and lateral directions at a temperature above 115 deg.C and further stretching it simultaneously and biaxially in both longitudinal and lateral directions at a temperature above 80 deg.C and below the temperature of the first simultaneous and biaxial stretch. Also it is desirable that the intrinsic viscosity of the polyester is 0.51-1.00, preferably 0.64-0.90.

    PREPARATION OF BIAXIAL ORIENTATED POLYETHYLEN TEREPHTHALATE FILM
    8.
    发明专利
    PREPARATION OF BIAXIAL ORIENTATED POLYETHYLEN TEREPHTHALATE FILM 失效

    公开(公告)号：JPS58118220A

    公开(公告)日：1983-07-14

    申请号：JP67082

    申请日：1982-01-06

    Applicant: TORAY INDUSTRIES

    Inventor： MINAMI TOMOYUKI ,  TANAKA KAZUHIRO ,  NISHIOKA TAKESHI

    IPC: B29C49/00 ,  B29C55/00 ,  B29C55/14 ,  C08J5/18

    Abstract: PURPOSE:To obtain a film of which mechanical strength in longitudinal direction is high by such an arrangement wherein a substantially non-orientation polyethylene terephthalate film is multistage extended under certain conditions, and next, the film is extended laterally, and then it is further extended longitudinally again, and at this time, the product of an extension multiple of each extension shall be made larger than 25 times. CONSTITUTION:A film made of substantially non-oriented polyethylene terephthalate is multi-stage extended so that its non-crystal orientation coefficient becomes 0.6-1.0, and its double refraction rate becomes 0.02-0.1, and next it is extended laterally at an extension multiple of 2.5-4.5 times, and further it is extended longitudinally again at an extension multiple of 1.5-2.5 times and further the product of those multiples of multi-stage extension, lateral extension and longitudinal extension shall be made larger than 25 times. By this arrangement, it is possible to stably manufacture polyethylene terephthalate film of which mechanical strength in the longitudinal direction is high.

    METHOD FOR RE-ORIENTATING THERMOPLASTIC BIAXIALLY ORIENTED FILM
    10.
    发明专利
    METHOD FOR RE-ORIENTATING THERMOPLASTIC BIAXIALLY ORIENTED FILM 失效

    公开(公告)号：JPS5845028A

    公开(公告)日：1983-03-16

    申请号：JP14317981

    申请日：1981-09-12

    Applicant: TORAY INDUSTRIES

    Inventor： TANAKA KAZUHIRO ,  NISHIOKA TAKESHI ,  MINAMI TOMOYUKI

    IPC: B29C55/00 ,  B29C47/88 ,  B29C49/00 ,  B29C55/06 ,  B29C55/14 ,  B29L7/00

    Abstract: PURPOSE:To produce the high-strength article having low necking down effect, by re-orienting longitudinally a biaxially oriented film while static electrical charges are provided to both selvages. CONSTITUTION:Static electrical charge is applied to the both selvages of the biaxially oriented film between needle-like electrodes 6A, 6B and a feed roll 3 by corona discharge. Due to this static electrical charge, while the both selvages of the biaxially oriented film are attracted firmly to the surface of the feed roll 3, it is delivered in a direction shown by arrows, and it is re-oriented longitudinally between the heating feed roll 3 and a cooling and orienting roll 4.

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