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    POLYPHENYLENE SULFIDE LAMINATED FILM AND CADACITOR USING THE SAME
    21.
    发明专利
    POLYPHENYLENE SULFIDE LAMINATED FILM AND CADACITOR USING THE SAME 失效

    公开(公告)号：JPH05318665A

    公开(公告)日：1993-12-03

    申请号：JP15004992

    申请日：1992-05-19

    Applicant: TORAY INDUSTRIES

    Inventor： NOGUCHI YUKIO ,  KIDA KENJI ,  UEDA TOMOAKI

    IPC: B29C55/12 ,  B29K67/00 ,  B29K81/00 ,  B29L9/00 ,  B29L31/34 ,  B32B27/00 ,  B32B27/08 ,  B32B27/36 ,  C23C14/20 ,  H01G4/06

    Abstract: PURPOSE:To achieve the reduction of low voltage breakdown frequency and the enhancement of self-healing properties and humidity resistance by setting the sum thickness of surface layers each composed of a polyester film to a specific % range with respect to the thickness of a center layer made of a biaxially oriented film made of poly-p-phenylene sulfide represented by a specific structural formula. CONSTITUTION:A polyphenylene sulfide laminated film is obtained by laminating surface layers (A-layers) each composed of a polyester film on both surfaces of a center layer (B-layer) composed of a biaxially oriented film of poly-p- phenylene sulfide wherein 70mol% or more of a repeating unit is represented by formula I. The sum thickness of the A-layers is set to 30-50% of the thickness of the B-layer and the intrinsic viscosity of polyester is set to 0.62 or more. This polyphenylene sulfide laminated film is reduced in low voltage breakdown frequency and improved in self-healing properties and humidity resistance at the time of the application of voltage and a condenser constant in capacity over a side temp. range and enhanced in reliability can be produced using said film.

    PREPARATION OF POLYYPPPHENYLENE SULFIDE FILM
    24.
    发明专利
    PREPARATION OF POLYYPPPHENYLENE SULFIDE FILM 失效

    公开(公告)号：JPS5662128A

    公开(公告)日：1981-05-27

    申请号：JP13755579

    申请日：1979-10-26

    Applicant: TORAY INDUSTRIES

    Inventor： ASAKURA TOSHIYUKI ,  NOGUCHI YUKIO ,  KOBAYASHI HIROAKI

    IPC: B29C49/00 ,  B29C55/00 ,  B29C55/14 ,  C08J5/18 ,  H05K1/03

    Abstract: PURPOSE:To obtain film excellent in smoothness and uniformity of thickness, by a method wherein the title polymer having a specific melt viscosity is melted, extruded on a cooling medium at a specific temperature in the form of film, stretched uniaxially under special conditions and then stretched in the orthogonal direction and fixed thermally. CONSTITUTION:The titled polymer wherein the content of constitutional unit of the formula is at least 90mol% and the melt viscosity at 300 deg.C is 100-600,000 poise under a shear rate 200/sec is melted and extruded on a cooling medium having a surface temperature 120 deg.C or less in the form of film. The film obtained by such a method having a density 1,320-1,330 is stretched 3-4.7 times at 85-100 deg.C in a uniaxial direction, then 2.7-4.5 times at 87-110 deg.C in the direction at right angles to the uniaxial stretching direction and then fixed thermally at 200-275 deg.C.

    PRODUCTION OF POLYYPPPHENYLENE SULFIDE FILM
    25.
    发明专利
    PRODUCTION OF POLYYPPPHENYLENE SULFIDE FILM 失效

    公开(公告)号：JPS55111235A

    公开(公告)日：1980-08-27

    申请号：JP1848979

    申请日：1979-02-21

    Applicant: TORAY INDUSTRIES

    Inventor： ASAKURA TOSHIYUKI ,  KOBAYASHI HIROAKI ,  NOGUCHI YUKIO

    IPC: B29C49/00 ,  B29C55/00 ,  B29C55/14 ,  C08G75/02 ,  C08G75/06 ,  C08G75/14 ,  C08J5/18

    Abstract: PURPOSE:To obtain a useful film for packing material or the like excellent in heat resistance, mechanical strength and the like, by carrying out biaxial orientation and heat setting under a specified condition employing a highly polymerized poly-p- phenylene sulfide having a p-phenylene sulfide skeleton. CONSTITUTION:A poly-p-phenylene sulfide containing at least 90mol% of a component as shown by the formula is produced by the method of reacting a dihalide with an alkali sulfide in a polar solvent at a high temperature, or the like. An amorphous film composed of the poly-p-phenylene sulfide is stretched in one direction within the range of 80-120 deg.C two-to five-fold at the first stage, until the index of birefringence of the film falls in the range of 0.05-0.3. Then, it is further stretched in the direction at a right angle to the stretching at the first stage 1.5-to 5-fold within the range of 80-150 deg.C. Finally, it is heat-set under the tension at a temperature from 180 deg.C to the melting point.

    METHOD OF MANUFACTURING POLYYPPPHENYLENE SULFIDE FILM
    27.
    发明专利
    METHOD OF MANUFACTURING POLYYPPPHENYLENE SULFIDE FILM 失效

    公开(公告)号：JPS5534967A

    公开(公告)日：1980-03-11

    申请号：JP10888378

    申请日：1978-09-05

    Applicant: TORAY INDUSTRIES

    Inventor： ASAKURA TOSHIYUKI ,  KOBAYASHI HIROAKI ,  NOGUCHI YUKIO

    IPC: H01B3/30 ,  B29C49/00 ,  B29C55/00 ,  B29C55/12 ,  B29C61/00 ,  B29D7/01 ,  C08J5/18

    Abstract: PURPOSE:To improve dimensional stability, particularly, heat-contraction characteristics, by subjecting poly-p-phenylene sulfide two-axis-extended film to stretch heat treatment and thereby thermosetting it, and further by heat treating it under specified conditions. CONSTITUTION:Two-axis-extended film substantially made of poly-p-phenylene sulfide is heat treated under stretching, at 150-280 deg.C, preferably, at 250-280 deg.C, for 1-120 seconds, and thereby it is sufficiently thermoset. Next, the resultant substance is heat treated under the restriction for contraction or expansion within 20% in both lengthwise and crosswise directions, preferably within 10%, or at a fixed length, at a temperature below the preceding heat treatment temperature but above 50 deg.C, preferably, above 80 deg.C, for 1-10 seconds, and thereby the desired film is obtained. USE:Suitable for use for magnetic tape, optical image recording base, print circuit base, etc.

    POLYPHENYLENE SULFIDE FILM AND FILM CAPACITOR USING THE SAME
    29.
    发明专利
    POLYPHENYLENE SULFIDE FILM AND FILM CAPACITOR USING THE SAME 失效

    公开(公告)号：JPH10315321A

    公开(公告)日：1998-12-02

    申请号：JP14719997

    申请日：1997-05-20

    Applicant: TORAY INDUSTRIES

    Inventor： KINOSHITA SHUICHI ,  NOGUCHI YUKIO ,  SATO KUNIO

    IPC: C08J5/18 ,  B29C55/12 ,  B29K81/00 ,  B29L7/00 ,  C08G75/02 ,  C08G75/0209 ,  H01B3/30 ,  H01G4/18 ,  H01G4/32

    Abstract: PROBLEM TO BE SOLVED: To manufacture a metallized film capacitor having defective ratio of breakdown voltage of the capacitor by specifying surface roughness and thickness of a biaxially oriented film substantially made of poly-p- phenylenesulfide. SOLUTION: Surface roughness SRmax of a biaxially oriented film substantially made of poly-p-phenylenesulfide(PPS) is a range of 1000 to 15000 nm. If the PPS film having a surface roughness SRmax or 1000 nm or more is used, repair by voltage treatment can be effectively executed. If the PPS film having a surface roughness SRmax of 15000 nm is used, a gap between film layers when the film is wound or wound by many layers or laminated can be increased to increase unevenness of electrostatic capacity of a capacitor. And, the PPS film having a thickness of 10 μm or less is an object and the PPS film having a thickness of 6 μm is an object.

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