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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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Patent Agency Ranking
公开(公告)号：JPH11135359A
公开(公告)日：1999-05-21
申请号：JP31436497
申请日：1997-10-30
Applicant: TORAY INDUSTRIES
Inventor： UEDA TAKASHI , KUMAGAI TAKUYA , NAGAI ITSUO
Abstract: PROBLEM TO BE SOLVED: To provide a polyester film for capacitor dielectric by which the deterioration of insulation resistance of capacitor can be reduced and the produc tion yield thereof be improved, by eliminating deterioration of insulation resis tance due to film, and a highly safe capacitor can be formed. SOLUTION: A film is made mainly of polyethylene terephthalate and is oriented biaxially. Its thermal deformation S120 at 120 deg.C in the lengthwise direction is represented by a formula, S120 =(L120 -L40 )/L40 ×100(%) (L120 : length of film sample at 120 deg.C; L40 : length of film sample at 40 deg.C). In this case, the thermal deformation S120 is 1 to 2.
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公开(公告)号：JPH11129414A
公开(公告)日：1999-05-18
申请号：JP29862697
申请日：1997-10-30
Applicant: TORAY INDUSTRIES
Inventor： TANAKA SHIGERU , NAGAI ITSUO , UEDA TAKASHI
IPC: B32B27/32
Abstract: PROBLEM TO BE SOLVED: To provide a matte finish antistatic film which shows outstanding antistatic properties and remarkable matte finish and is best suited for various packaging use applications. SOLUTION: This laminated film is formed of layers A, B, C; that is, a matte layer(layer B) with a surface roughness (Rt) of 1-10 μm which is laminated on one the faces of a base layer polypropylene resin layer (layer A) and a low stereoregular polypropylene layer(layer C) with a mesopentad molar fraction of 70-90% which is laminated on the other face of the base layer polypropylene resin layer. The surface glossiness of the layer B is 50% or less and the surface resistance value of the layer C is 10 Ω/square or less.
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公开(公告)号：JPH10156938A
公开(公告)日：1998-06-16
申请号：JP12086597
申请日：1997-05-12
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 the permeability and swelling resistance between film layers at a time of the immersion in insulating oil by specifying the isotacticity and isotactic pendant ratio of a biaxially oriented polypropylene film and the center line average surface roughness of both surfaces thereof. SOLUTION: The isotacticity of a biaxially oriented polypropylene film is 98.5-99.5%. The isotacticity is defined by the ratio of the wt. of the insoluble component in the film to the wt. of the film before extraction when the film is extracted with boiling n-heptane. The stereoregularity of the polypropylene film is evaluated on the basis of a pendant ratio by an absorption peak of a methyl group measured by C-NMR and the isotactic pendant ratio mmmm of this film exceeds 99%. Further, the max. roughness of both surfaces of the biaxially oriented polypropylene film is pref. 0.1-4.0μm.
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29.发明专利
公开(公告)号：JPH09306780A
公开(公告)日：1997-11-28
申请号：JP12325596
申请日：1996-05-17
Applicant: TORAY INDUSTRIES
Inventor： AOKI SEIZO , DEGUCHI YUKICHI , UEDA TAKASHI
Abstract: PROBLEM TO BE SOLVED: To provide a polyester film for a capacitor, superior in film formability, productivity, and various electric characteristics. SOLUTION: The polyester film for a capacitor is a two-axially orientated film of a polyester of a polyethylene terephthalate contg. at least an acid component other than that of terephthalic acid and/or glycol component other than that of ethylene glycol 0.1-10mol%. This improves the film formability i.e., making the film hardly broken and allows a stable film forming for a long time and enables production of very thin films not produced in the prior art, resulting in forming of a polyester film for a capacitor, superior in various electric characteristics (breakdown voltage).
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公开(公告)号：JPH09300845A
公开(公告)日：1997-11-25
申请号：JP12325396
申请日：1996-05-17
Applicant: TORAY INDUSTRIES
Inventor： UEDA TAKASHI , KAWAZU YUKIO , DEGUCHI YUKICHI
Abstract: PROBLEM TO BE SOLVED: To form the perforation diameter in compliance with the variation of energy level and improve tone properties by biaxially orienting a resin composition composed of polyester having respectively specified melting point and glass transition point and the specified temperature difference between the temperature rise crystallization temperature and the glass transition point as a main component. SOLUTION: In a heat-sensitive stencil printing base paper polyester film perforated by the flash emission by digital processing for perforating a thermal head, the laser emission or the like, a halogen lamp or the like, a biaxially oriented resin composition composed of polyester having the melting point (Tm) of 200 deg.C or under, the glass transition point (Tg) of 50 deg.C or above and the temperature difference (ΔTcg:Tcc-Tg) between the temperature rise crysallization temperature (Tcc) and the glass transition point (Tg) is 100 deg.C or under as a main component is used. The film is formed of a resin composition composed of polyester of 70wt.% or more as a main component.
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