中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

86 records (took 0.015 seconds)

    METHOD AND APPARATUS FOR PRODUCING THERMOPLASTIC RESIN CONTINUOUS MOLDED PRODUCT
    1.
    发明专利
    METHOD AND APPARATUS FOR PRODUCING THERMOPLASTIC RESIN CONTINUOUS MOLDED PRODUCT 失效

    公开(公告)号：JPH11333861A

    公开(公告)日：1999-12-07

    申请号：JP7033999

    申请日：1999-03-16

    Applicant: TORAY INDUSTRIES

    Inventor： SAKAMOTO JUN ,  TSUNASHIMA KENJI ,  MINAMIZAWA HIDEHITO

    IPC: B29C35/06 ,  B29C55/02 ,  B29K101/12 ,  B29L7/00 ,  D01D13/00

    Abstract: PROBLEM TO BE SOLVED: To provide a method and apparatus for producing a continuous molded product of a thermoplastic resin which prevent the product defects from being caused by avoiding deposition of a sublimate such as an oligomer near a heating process device, and which permits reduction of the cleaning work load which is often performed. SOLUTION: In a method and apparatus for producing a continuous molded product wherein the continuous molded product (M) of a thermoplastic resin is thermally processed at heating process portions 2, 4, 5, photocatalyst layers 7 are provided on the surfaces of the external walls of covers 6a, 6b, 6c, 6d, 6e covering the heating process portions 2, 4, 5 or on the surfaces of the external walls of the heating process portions 2, 4, 5, thereby illuminating the light to the photocatalyst layers 7 from the light illuminating means 8.

    BIAXIALLY ORIENTED POLYESTER FILM AND ITS MANUFACTURE
    2.
    发明专利
    BIAXIALLY ORIENTED POLYESTER FILM AND ITS MANUFACTURE 失效

    公开(公告)号：JPH10329292A

    公开(公告)日：1998-12-15

    申请号：JP14495197

    申请日：1997-06-03

    Applicant: TORAY INDUSTRIES

    Inventor： MINAMIZAWA HIDEHITO ,  TOYODA KATSUYA ,  OKASHIRO HIDETOSHI

    IPC: B41M5/382 ,  B29C55/12 ,  B29K67/00 ,  B29L7/00 ,  B29L9/00 ,  B32B27/36 ,  B41M5/40 ,  B41M5/41 ,  C08J5/18 ,  C08J7/04 ,  C08K5/09 ,  C08L67/02 ,  C08L71/00 ,  C09D167/02 ,  G11B5/73 ,  G11B5/738 ,  B41M5/38

    Abstract: PROBLEM TO BE SOLVED: To improve easy adhesion and eliminate thickness irregularities by applying an easily adherent coating on one of the faces of a polyester film whose ratio of a peak strength in the longitudinal direction of a biaxially oriented polyester film and a peak strength in the thickness direction, at a specific number of waves measured by the laser Raman scattering process. SOLUTION: An easily adherent coating is applied to one of the faces of a polyester film whose ratio R (IMD/IND) of a peak strength (IMD) in the longitudinal direction and a peak strength (IND) in the thickness direction, at 1615 cm measured by the laser Raman scattering process is 6-20. This coating is preferably a mixture made up mainly of copolyester ether resin and higher fatty acid wax. This polyester film is oriented in a first step at a magnification of 1.5-3 times, within a range of film temperature above the Tg and below the Tg+60 deg.C of polyester at the time of orientating the film in the longitudinal direction, and then is oriented in a second step at a magnification of about 2.5-4 times after lowering the film temperatures to a level below a temperature lower by 5 deg.C than the orientation temperature of the first step.

    BIAXIALLY ORIENTED POLYESTER FILM
    5.
    发明专利
    BIAXIALLY ORIENTED POLYESTER FILM 失效

    公开(公告)号：JPH08132522A

    公开(公告)日：1996-05-28

    申请号：JP27486994

    申请日：1994-11-09

    Applicant: TORAY INDUSTRIES

    Inventor： MINAMIZAWA HIDEHITO ,  TOYODA KATSUYA ,  TSUNASHIMA KENJI

    IPC: C08J5/18 ,  B29C55/12 ,  B29K67/00 ,  B29L7/00 ,  C08K3/00 ,  C08K5/00 ,  C08L67/00 ,  G11B5/73 ,  G11B5/704

    Abstract: PURPOSE: To obtain a biaxially oriented polyester film which improves the contact state of a magnetic tape and a head, reduces the damage of a magnetic surface and has improved in electromagnetic conversion characteristics by specifying the inclination of the orientation main axis of the biaxially oriented polyester film with respect to the longitudinal direction of the film. CONSTITUTION: The orientation main axis of a biaxially oriented polyester film is inclined within a range of 3-20 deg. with respect to the longitudinal direction of the film. The stretching of the film in the longitudinal direction thereof may be performed in an one-stage fashion or a multistage fashion of two or more stages but, when the F-5 value in the longitudinal direction of an uniaxially stretched film is 17kg/mm or more, it is especially suitable to perform two-stage stretching such that a polyester film is stretched by 1.2-4 times within the temp. range of Tg-(Tg+60 deg.C) of polyester and subjected to the second stage stretching of about 2-5 times at temp. equal to or lower than (first stage stretching temp. -5 deg.C) in order to obtain this inclination of the orientation main axis. Subsequently, the polyester film is laterally stretched and oriented.

    PRODUCTION OF BIAXIALLY ORIENTED POLYETHYLENE-2, 6-NAPHTHALATE FILM
    6.
    发明专利
    PRODUCTION OF BIAXIALLY ORIENTED POLYETHYLENE-2, 6-NAPHTHALATE FILM 失效

    公开(公告)号：JPH0825473A

    公开(公告)日：1996-01-30

    申请号：JP27486894

    申请日：1994-11-09

    Applicant: TORAY INDUSTRIES

    Inventor： MINAMIZAWA HIDEHITO ,  TOYODA KATSUYA ,  TSUNASHIMA KENJI

    IPC: C08J5/18 ,  B29C55/12 ,  B29K67/00 ,  B29L7/00 ,  C08K3/20 ,  C08K5/09 ,  C08L67/00 ,  C08L67/03 ,  G11B5/73 ,  G11B5/733 ,  G11B5/704

    Abstract: PURPOSE:To stably form a biaxially oriented polyethylene-2,6-naphthalate film having excellent mechanical strength to beneficially use the same for a magnetic recording medium or the like by performing longitudinal stretching over two stages and setting the stretching conditions in the respective stages to specific ranges. CONSTITUTION:A non-stretched polyethylene-2,6-naphthalate film in a substantially amorphous state is stretched by 1.5-3.0 times at temp. of 140-200 deg.C in a first stage and continuously stretched in the same direction as the first stage at temp. lower than the stretching temp. of the first stage so that the product of the stretching magnification of the first stage and that of a second stage becomes 5.0-12.0 times. Further, the film is streched in the direction crossing the stretching direction of the first and second stags at a right angle. Herein, it is pref. that the double refraction (DELTAn) of the film after first stage stretching is 0.005-0.07 and the double refraction (DELTAn) of the film after second stage stretching is 0.2-0.5.

    BIAXIALLY ORIENTED FILM
    8.
    发明专利
    BIAXIALLY ORIENTED FILM 失效

    公开(公告)号：JPH06128394A

    公开(公告)日：1994-05-10

    申请号：JP27998492

    申请日：1992-10-19

    Applicant: TORAY INDUSTRIES

    Inventor： OKAZAKI IWAO ,  ABE KOICHI ,  MINAMIZAWA HIDEHITO

    IPC: B29C55/12 ,  B29L7/00 ,  B32B27/36 ,  C08J5/18

    Abstract: PURPOSE:To obtain the title film resistant to surface scratch and can give a magnetic medium excellent in image quality and dropout prevention by using organic particles of a specified strength and specifying the number of protrusions on the film surface. CONSTITUTION:The film contains organic particles (desirably divinylbenzene particles and/or silicone particles) having a 10% deformation strength of 3-30kgf/ mm and has 2X10 -5X10 protrusions/mm on at least one surface. Although the polymer as a constituent of the film is not particularly limited, a polyester mainly consisting of ethylene terephthalate is preferable because the dubbing and scratch resistances can be improved thereby. This film is resistant to surface scratch and can give a magnetic medium excellent in image quality and dropout prevention.

    BIAXIALLY ORIENTED THERMOPLASTIC RESIN FILM
    9.
    发明专利
    BIAXIALLY ORIENTED THERMOPLASTIC RESIN FILM 失效

    公开(公告)号：JPH04336227A

    公开(公告)日：1992-11-24

    申请号：JP10752291

    申请日：1991-05-13

    Applicant: TORAY INDUSTRIES

    Inventor： OKAZAKI IWAO ,  ABE KOICHI ,  MINAMIZAWA HIDEHITO

    IPC: B29C55/12 ,  B29K103/04 ,  B29L7/00 ,  B29L9/00 ,  B32B27/00 ,  B32B27/20 ,  C08K9/04 ,  C08L67/00

    Abstract: PURPOSE:To enhance scratch resistance and to especially improve dubbing resistance as a magnetic recording body by forming a biaxially oriented thermoplastic resin film by providing a film layer A based on a thermoplastic resin A containing specific inert particles to at least the single surface of a film layer B based on a thermoplastic resin B. CONSTITUTION:As a thermoplastic resin layer B, a crystalline polymer, for example, polyester or polyamide is used. A thermoplastic resin layer A composed of, for example, ethylene terephthalate or ethylene 2,6-naphthalate is formed to the surface of the layer B. The particle size of inert particles, for example, composed of colloidal silica contained in the resin layer A is 0.2-5 times the thickness of the layer A, the content thereof is 0.05-20wt.% and the thickness of the layer A itself is 0.005-3mum. The particles are treated with 0.0001-10.0wt.% of an isocyanate compound and 0.0001-10.0wt.% of a water-soluble polyester compound.

    VIDEO TAPE
    10.
    发明专利
    VIDEO TAPE 失效

    公开(公告)号：JPH04125810A

    公开(公告)日：1992-04-27

    申请号：JP24826390

    申请日：1990-09-17

    Applicant: TORAY INDUSTRIES

    Inventor： ABE KOICHI ,  NISHINO SATOSHI ,  MINAMIZAWA HIDEHITO

    IPC: G11B5/706

    Abstract: PURPOSE:To produce the film having excellent scratch resistance even during high-speed traveling by specifying the surface form (Rp/Ra ratio) of the nonmagnetic surface of the video tape and the curling characteristic of the tape to specific ranges. CONSTITUTION:The pellets formed by mixing the particle master pellets of polyethylene (PE) terephthalate contg. the particles and the pellets of the PE terephthalate contg. substantially no particles in such a manner that the content of the particles attains a prescribed ration are dried under a reduced pressure. These pellets are supplied to an extruder and are melt extruded and cooled to solidity, by which an unstretched film is formed. This film is stretched longitu dinally and is further stretched transversely. The stretched film is heat treated to obtain the biaxially oriented film. A magnetic coating material is applied on this film and is subjected to magnetic orientation. The coating is then dried. Further, the film is subjected to a calender treatment then to curing. The Rp/Ra ratio of the nonmagnetic surface is 4 to 20 at this time and the curling amt. is 0.05 to 1mm. The measurement of the scratch resistance reveals that the film satisfying the Rp/Ra ration and the curling characteristic is excellent in the scratching resistance as well even during the high-speed traveling.

Patent Agency Ranking