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公开(公告)号：JPH1177934A
公开(公告)日：1999-03-23
申请号：JP25185797
申请日：1997-09-17
Applicant: TORAY INDUSTRIES
Inventor： KUMAGAI TAKUYA , UEDA TAKASHI , NAGAI ITSUO
IPC: B05D5/12 , B05D7/24 , B29C55/12 , B29K67/00 , B29L7/00 , B32B15/08 , B32B15/09 , B32B27/36 , B32B27/40 , C08J5/18 , C08L67/02 , C08L75/06 , C23C14/20 , H01G4/18 , H01G4/20
Abstract: PROBLEM TO BE SOLVED: To prevent the rapid lowering of capacity, the rising of tan δ, or the like under revere environment such as high temperature, high humidity, etc., by providing a coating layer having a specific thickness on the surface of a polyester film, and specifying the variation rate of glossiness at the time of setting a metal layer on the coating layer. SOLUTION: A coating layer with a thickness of 0.01-1 μm is formed on at least one surface of a polyester film, the glossiness is made G0 as a metal layer is set on the coating layer, and a value of the variable rate (G0 -G)/G0 ×100(%) is made 20% or lower when the glossiness is made G after being immersed in methylethyl ketone for 10 mins. When the value comes beyond 20%, tan δ or the like gets worse. The coating layer made by applying and drying water soluble and/or water dispersive cross-linked polyester resin, and/or water soluble and/or water dispersive cross-linked polyester urethane resin is preferable at giving an anti-moisture heat life and chemical resistant property.
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公开(公告)号：JPH10180963A
公开(公告)日：1998-07-07
申请号：JP26882697
申请日：1997-10-01
Applicant: TORAY INDUSTRIES
Inventor： TANAKA SHIGERU , UEDA TAKASHI , NAGAI ITSUO
Abstract: PROBLEM TO BE SOLVED: To provide a laminated film having excellent antistatic properties, transparency, heat sealability, and adapted to various packaging applications. SOLUTION: The laminated film obtained by laminating a surface layer polypropylene resin layer (B layer) having mesopentad fraction of 70 to 90%, a melting point (Tm) of 155 deg.C or higher and crystallization temperature (Tmc) of 100 deg.C or more on at least one surface of a base layer polypropylene resin layer (A layer) having mesopeptad fraction of 92% or more is manufactured. In this case, a surface resistivity of the B layer is 10 Ω/m less, and its total haze is 2.0% or less.
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公开(公告)号：JPH10156940A
公开(公告)日：1998-06-16
申请号：JP25661497
申请日：1997-09-22
Applicant: TORAY INDUSTRIES
Inventor： UEDA TAKASHI , TANAKA SHIGERU , NAGAI ITSUO
Abstract: PROBLEM TO BE SOLVED: To enhance long-term dielectric breakdown characteristics at high temp. and workability by specifying the isotacticity and isotactic pendant ratio of a biaxially oriented polypropylene film and the sum of the moduluses in the longitudinal and laterial directions of the film. SOLUTION: The isotacticity of a biaxially oriented polypropylene film is 98.5-99.5% and the isotactic pendant ratio mmmm displaying the stereoregularity of the film evaluated on the basis of a pendant ratio by the absorption peak of a methyl group measured by C-NMR exceeds 99%. Further, the sum of the moduluses of elasticity in the longitudinal and lateral directions of the biaxially oriented polypropylene film is 7-10GPa. When the sum of the moduluses of elasticity is below 7GPa, heat resistance and high dielectric breakdown characteristics are not obtained and the tension control in a membrane film vapor deposition process becomes difficult. When the sum of the moduluses of elasticity exceeds 10GPa, film forming stability at a time of the production of the film is not obtained and yield lowers.
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4.发明专利
公开(公告)号：JPH09300843A
公开(公告)日：1997-11-25
申请号：JP12051696
申请日：1996-05-15
Applicant: TORAY INDUSTRIES
Inventor： UEDA TAKASHI , NIINUMADATE HIROSHI , DEGUCHI YUKICHI
Abstract: PROBLEM TO BE SOLVED: To form the perforation diameter in compliance with the variation of energy level and improve the tone properties by using a biaxially oriented polyester film formed on a polyester film having the specified melting point and thickness and the specified integral value of thermal shrinkage found by a specified formula. SOLUTION: In a heat-sensitive stencil printed base paper polyester film perforated by the flash emission, a biaxially oriented polyester film having the melting point set at 220 deg.C or above and the thickness set as 0.2-4μm and also having the integral value of thermal shrinkage stress found by a formula and satisfying 1000>=(Mmd+Mtd)/2>=100 is used. In the formula, M represents the integral value of thermal shrinkage stress, s(t) represents the thermal shrinkage stress Mpa at the temperature(t), To represents the temperature of starting the thermal shrinkage stress, Tm represents the temperature of thermal shrinkage stress from the starting temperature to the zero(0)MPa again, Mmd represents the integral value of thermal shrinkage stress in the longitudinal direction of a film and Mtd represents the integral value of thermal shrinkage stress in the width direction of the film.
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公开(公告)号：JPH08267684A
公开(公告)日：1996-10-15
申请号：JP7632095
申请日：1995-03-31
Applicant: TORAY INDUSTRIES
Inventor： AOKI SEIZO , UEDA TOMOAKI , UEDA TAKASHI
Abstract: PURPOSE: To provide a polyester film with good life characteristics of moisture resistance, and also a sliding property and winding up property to be used for condensers. CONSTITUTION: The polyester film includes a skin film with a density of 0.005 or more carboxylic acid formed on at least one surface thereof. A difference in the contact angle of from the reference value of the skin film to water is set above 0 deg. and below 15 deg. or lower. Setting the difference in the contact angle of water into a specific range with respect to a density of the specific surface carboxylic acid and reference value allows the polyester film to be used for condensers to have a good moisture-heat resistive life property, sliding property, element winding up property, and anti-blocking property.
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Patent Agency Ranking
公开(公告)号：JPH07320975A
公开(公告)日：1995-12-08
申请号：JP11285094
申请日：1994-05-26
Applicant: TORAY INDUSTRIES
Inventor： UEDA TOMOAKI , AOKI SEIZO , UEDA TAKASHI
Abstract: PURPOSE:To improve the breakdown voltage of a polyethylene naphthalate film for capacitor and stabilize the dielectric characteristic of the film by specifying the breaking extension and breaking strength of the film. CONSTITUTION:A polyethylene naphthalate film for capacitor has a braking extension of =25kg/mm in both the longitudinal and transversal directions. The average surface roughness Ra of the film is adjusted to 0.01-0.2mum and the film is used for a chip-like film capacitor. This film is manufactured by extruding polyethylene naphthalate which is polimerized in a molten state or solid state and contains fine particles in a sheet-like state after drying. After elongating the sheet 2.5-6 times in the longitudinal direction, the sheet is elongated 2.5-6 times in the transversal direction. After further elongating the sheet 1.1-3 times in both the longitudinal and transversal directions, the sheet is heated while the sheet is maintained in a rolled state.
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公开(公告)号：JPH07125156A
公开(公告)日：1995-05-16
申请号：JP27697093
申请日：1993-11-05
Applicant: TORAY INDUSTRIES
Inventor： UEDA TAKASHI , AOKI SEIZO , UEDA TOMOAKI
Abstract: PURPOSE:To obtain a polypropylene film for a capacitor in which moist heat resistant life can be improved and which has excellent productivity without deteriorating other electric characteristics by forming a film formed at least on one side surface and having a specific thickness of water dispersible polyester polyurethane resin in such a manner that its elongation at breakage and tensile strength are specific values. CONSTITUTION:A polypropylene film for a capacitor comprises a film of 0.01-1mum formed on at least one side surface and made of water dispersible polyester polyurethane resin in such a manner that its tensile strength is 300kg/cm or more at 100% of its elongation at breakage. The elongation at breakage of the resin is preferably 50% or less, and when it exceeds 100%, its moist heat resistance is deteriorated, blocking further easily occurs, and releasability at the time of winding is deteriorated. Then, the tensile strength is preferably 450kg/cm or more in view of moist heat resistant lifetime, press adhesion preventive properties. If it is less than 300kg/cm , the moist heat resistant lifetime is insufficient, and the press adhesion preventive properties are deteriorated.
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公开(公告)号：JP2001332127A
公开(公告)日：2001-11-30
申请号：JP2000151119
申请日：2000-05-23
Applicant: TORAY INDUSTRIES
Inventor： UEDA TAKASHI , KINOSHITA SHUICHI
Abstract: PROBLEM TO BE SOLVED: To provide an insulating material capable of improving reliability for operation of motors used at high temperatures and high pressure. SOLUTION: In the biaxially extended polyester film for electrical insulation, an increasing rate of thickness after a pressurizing test is 0 to 200%. By using the polyester film for insulation use such as a motor for a compressor of a refrigerator, an air conditioner or the like, a highly reliable motor, in which leakage of current is reduced, can be obtained.
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公开(公告)号：JPH11288622A
公开(公告)日：1999-10-19
申请号：JP8979998
申请日：1998-04-02
Applicant: TORAY INDUSTRIES
Inventor： UEDA TAKASHI , NAGAI ITSUO
Abstract: PROBLEM TO BE SOLVED: To reduce a leakage current and an electric power loss, restrain a propagation delay of an electric signal, and improve a characteristic of a propagating speed by setting a dielectric constant in a specific frequency of a polyester film in a specific range, and setting a rate of change of apparent density when soaked in ethyl alcohol not more than a specific value. SOLUTION: A dielectric constant of a polyester film at 1 kHz is set in a range of 1.5 to 3.0, and a rate of change of apparent density when soaked in ethyl alcohol is set not more than 10%. Therefor, a dielectric constant in the whole film is reduced by including air wrapping-in pores having extremely small dielectric constant and dielectric dissipation factor inside the film. In the respective pares, when the film is soaked in insulating oil, a refrigerant and a thermosetting resin, the respective ones do not permeate up to the inmost part inside of the film to restrain apparent density to a rate of change not more than a specific value.
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公开(公告)号：JPH11286071A
公开(公告)日：1999-10-19
申请号：JP9032998
申请日：1998-04-02
Applicant: TORAY INDUSTRIES
Inventor： UEDA TAKASHI , NAGAI ITSUO
IPC: B32B15/085 , B32B15/08 , H01G4/18
Abstract: PROBLEM TO BE SOLVED: To provide a metallized polypropylene film which has improved dielectric breakdown resistance can be made a capacitor which controlled the decrease in electrostatic capacity and the increase in dielectric loss tangent caused by the generation of corona during the use for a long period at high temperatures without using an insulating oil. SOLUTION: In a metallized polypropylene film in which a metal layer is formed at least on one side, the thermal dimensional change rate in the longitudinal direction of the film generated during a temperature increasing process from 30 deg.C is regulated to be 0-2% at 120 deg.C), the isotacticity of polypropylene of the film is kept 98-98.5%, and an isotactic pentad ratio is controlled to be at least 99%.
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