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公开(公告)号：DE69622512T2
公开(公告)日：2002-11-07
申请号：DE69622512
申请日：1996-04-30
Applicant: TORAY INDUSTRIES
Inventor： TSUNASHIMA KENJI , TSUNEKAWA TETSUYA , KOTOURA MASAAKI
IPC: D01F6/62 , B29C47/86 , B29C55/02 , B29K67/00 , B29L7/00 , C08J5/18 , C08K5/00 , C08L67/00 , C08L67/02 , C08L67/04 , D01F6/92 , G11B5/73 , H01B3/42
Abstract: A novel polyester film is disclosed, comprising a liquid crystal polyester, a non-liquid crystal polyester and a fiberizer capable of substantially fiberizing said liquid crystal polyester. A process for the preparation of such a polyester film is also disclosed. Such a polyester film shows drastic improvements in various physical properties and other properties over the prior art polyester films. The polyester film according to the present invention exhibits a high modulus of elasticity, a high toughness, a small content of oligomer, thermal decomposition products and gelation products and excellent electrical properties and thus can be used as a base film for electrical insulating material, capacitor, magnetic recording medium, OA, FA, etc.
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公开(公告)号：DE69521732T2
公开(公告)日：2002-05-23
申请号：DE69521732
申请日：1995-04-06
Applicant: TORAY INDUSTRIES
Inventor： MIYAKAWA KATSUTOSHI , TOYODA KATSUYA , YAMAMOTO AKIKO , TSUNASHIMA KENJI , IEKI TOSHIYA
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.
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公开(公告)号：DE69416109T2
公开(公告)日：1999-09-09
申请号：DE69416109
申请日：1994-10-20
Applicant: TORAY INDUSTRIES
Inventor： KAWATSU YUKIO , TSUNASHIMA KENJI , TOYODA KATSUYA , ANDO KATSUTOSHI , YAMAUCHI HIDEYUKI , KIDA KENJI
Abstract: The specification discloses a thermal stencil paper for mimeograph, having a uniform shape of pores and well-balanced retainability and permeability of printing ink. Thermal stencil paper for mimeograph formed by laminating a porous support member comprising polyester fibers on one surface of a polyester film, characterized in that the porous support member forms a reticulate body having a fusing point at which the fibers are fused to one another, a film which straddles the fibers, and which has a thickness smaller than an average fiber diameter, being formed at some of the fusing points in the reticulate body. Since such thermal stencil paper for mimeograph is provided, the printed matter obtained by a mimeograph using this stencil paper has a high quality of image, and set-off does not occur. Such printed matter is highly convenient to transport.
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公开(公告)号：ID21788A
公开(公告)日：1999-07-22
申请号：ID990066
申请日：1998-07-09
Applicant: TORAY INDUSTRIES
Inventor： TSUNASHIMA KENJI , TOYAMA MASAHARU , MIYAKAWA KATSUYOSHI , OSADA SHUNICHI , CHIGIRA NOBUTSUGU , YOSHIMURA HIROSHI
Abstract: The present invention provides a method and apparatus for producing a thermoplastic resin film, which allows a biaxially oriented polyester film to be formed at a high speed of 400 m/min or more. The method of the present invention is a method for producing a thermoplastic resin film, in which a molten thermoplastic resin film is brought into contact with a cooling medium, to be cooled and solidifed, for producing a cast film, characterized in that the surface temperature of the cooling medium in the region immediately before the melt reaching position is kept at not lower than the glass transition temperature Tg and not higher than the melting point Tm of the thermoplastic resin. The apparatus of the present invention is an apparatus for producing a thermoplastic resin, characterized in that a cooling medium has a heater and a cooler to ensure that the surface temperature of the cooling medium in the region immediately before the melt reaching position is kept at not lower than the glass transition temperature Tg and not higher than the melting point Tm of the thermoplastic resin, and that the surface temperature of the cooling drum in the region immediately before the film leaving position is kept lower than the the glass transition temperature Tg of the thermoplastic resin.
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公开(公告)号：DE69416109D1
公开(公告)日：1999-03-04
申请号：DE69416109
申请日：1994-10-20
Applicant: TORAY INDUSTRIES
Inventor： KAWATSU YUKIO , TSUNASHIMA KENJI , TOYODA KATSUYA , ANDO KATSUTOSHI , YAMAUCHI HIDEYUKI , KIDA KENJI
Abstract: The specification discloses a thermal stencil paper for mimeograph, having a uniform shape of pores and well-balanced retainability and permeability of printing ink. Thermal stencil paper for mimeograph formed by laminating a porous support member comprising polyester fibers on one surface of a polyester film, characterized in that the porous support member forms a reticulate body having a fusing point at which the fibers are fused to one another, a film which straddles the fibers, and which has a thickness smaller than an average fiber diameter, being formed at some of the fusing points in the reticulate body. Since such thermal stencil paper for mimeograph is provided, the printed matter obtained by a mimeograph using this stencil paper has a high quality of image, and set-off does not occur. Such printed matter is highly convenient to transport.
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Patent Agency Ranking
公开(公告)号：HK1006474A1
公开(公告)日：1999-02-26
申请号：HK98105657
申请日：1998-06-18
Applicant: TORAY INDUSTRIES
Inventor： MIYAKAWA KATSUTOSHI , TSUNASHIMA KENJI , AOKI SEIZO
IPC: B29K67/00 , B29L7/00 , B32B5/18 , B29C55/12 , B32B27/36 , C08J9/00 , C08L23/20 , C08L67/00 , C08L67/02 , F21V7/00 , F21V8/00 , G02B1/10 , G02F1/1335 , G09F9/30 , H04N5/74 , G02B , G02F , G09F
Abstract: A reflecter (11) used in a surface light source comprising a white polyester film in which fine voids are formed and whose apparent specific gravity is in the range of 0.5 to 1.2. The reflectance of the polyester film can be increased by the fine voids. When the reflecter having a high reflectance is used in a surface light source having a side light system, a bright scope easy to see can be obtained.
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公开(公告)号：CA2264554A1
公开(公告)日：1999-01-21
申请号：CA2264554
申请日：1998-07-09
Applicant: TORAY INDUSTRIES
Inventor： OSADA SHUNICHI , MIYAKAWA KATSUTOSHI , YOSHIMURA HIROSHI , TSUNASHIMA KENJI , TOYAMA MASAHARU , CHIGIRA NOBUTSUGU
Abstract: A method of producing a thermoplastic resin film capable of giving a biaxially oriented polyester film at a speed of as high as at least 400 m/min and an apparatus therefor. Specifically, a method of producing a thermoplastic film, wherein a molten thermoplastic resin film is closely bonded to, and cooled and solidified, on a cooling medium to prepare a cast film, characterized in that the surface temperature of the medium immediately before the melt is brought into contact therewith is higher than a glass transition temperature Tg of the thermoplastic resin but is lower than a melting point Tm thereof. The apparatus has a heater device and a cooler provided in the cooling medium so that the surface temperature of the medium immediately before the melt is brought into contact therewith is higher than the glass transition temperature Tg of the thermoplastic resin but is lower than the melting point Tm thereof, and the surface temperature of the medium immediately before being peeled off is maintained to be lower than the glass transition temperature Tg of the thermoplastic resin.
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公开(公告)号：DE69412023D1
公开(公告)日：1998-09-03
申请号：DE69412023
申请日：1994-04-22
Applicant: TORAY INDUSTRIES
Inventor： OSAKI KATSUMASA , SUZUKI MASARU , TSUNASHIMA KENJI , FUKUHARA MOTOTADA
IPC: B41N1/24
Abstract: This invention discloses heat-sensitive stencil paper and a production method thereof. Since no adhesive is used in this paper, the permeability to printing ink is not affected, and thus high-quality prints are obtained. The elimination of the use of adhesive prevents the decrease in resistance to ink, the adhesion to a thermal head, and emission of toxicious chlorine and improves the stability of film coating and productivity. This stencil paper is obtained by thermally bonding a polyester film and a porous support comprising a polyester fiber and co-stretching them, and the peel strength between the film and the porous support is at least 1 g/cm. Accordingly, prints obtained by stencil printing have very high quality.
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公开(公告)号：ID19960A
公开(公告)日：1998-08-27
申请号：ID980260
申请日：1998-02-25
Applicant: TORAY INDUSTRIES
Inventor： TSUNEKAWA TETSUYA , KOTOURA MASAAKI , TSUNASHIMA KENJI
Abstract: A polyester film comprises a non-liquid crystal polyester (A) and a copolyester (B) containing mesogen groups in the main chain to form a phase separated structure in the non-liquid crystal polyester (A), and the dispersed domains of the copolyester (B) having respective dimensions such as to satisfy the following formulae (1) and (2): where I, J and K are shape indicators expressing the average shape of the plurality of domains existing in the film: I is the average length of the dispersed domains of the copolyester (B) in the machine direction of the film; J, that in the transverse direction; and K, that in the normal direction: and S is a function for selecting the shorter value of the lengths I and J; if I > J, SÄI, JÜ means J, and if I
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公开(公告)号：DE69219371D1
公开(公告)日：1997-06-05
申请号：DE69219371
申请日：1992-01-20
Applicant: TORAY INDUSTRIES
Inventor： MIYAKAWA KATSUTOSHI , TSUNASHIMA KENJI , AOKI SEIZO
IPC: B29C55/12 , B29K67/00 , B29L7/00 , B32B5/18 , B32B27/36 , C08J9/00 , C08L23/20 , C08L67/00 , C08L67/02 , F21V7/00 , F21V8/00 , G02B1/10 , G02F1/1335 , G09F9/30 , H04N5/74 , G02B1/04 , G02F1/13 , G09F9/00
Abstract: A reflecter (11) used in a surface light source comprising a white polyester film in which fine voids are formed and whose apparent specific gravity is in the range of 0.5 to 1.2. The reflectance of the polyester film can be increased by the fine voids. When the reflecter having a high reflectance is used in a surface light source having a side light system, a bright scope easy to see can be obtained.
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