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公开(公告)号：EP3006199A4
公开(公告)日：2017-01-11
申请号：EP14807296
申请日：2014-06-03
Applicant: TORAY INDUSTRIES
Inventor： KAWATA YUJI , WAKAHARA RYUICHI , TANAKA SHOTARO
CPC classification number: G02B5/08
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公开(公告)号：JP2002192674A
公开(公告)日：2002-07-10
申请号：JP2001148147
申请日：2001-05-17
Applicant: TORAY INDUSTRIES
Inventor： TANAKA SHOTARO , TANAKA HIROYUKI , MIMURA TAKASHI
Abstract: PROBLEM TO BE SOLVED: To provide a laminate film having a good surface flatness and high adhesion between a thermoplastic resin film and a heat resistant resin film and showing good heat resistance and solvent resistance. SOLUTION: A laminate film is manufactured by laminating a heat resistant resin layer containing a resin made of an polyamide acid with its imidization ratio of not less than 50% as a major component on at least one surface of a biaxially stretched thermoplastic resin film wherein the heat resistant resin layer is directly bonded to the surface of the biaxially stretched thermoplastic resin film.
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公开(公告)号：JP2002172747A
公开(公告)日：2002-06-18
申请号：JP2001103169
申请日：2001-04-02
Applicant: TORAY INDUSTRIES
Inventor： TANAKA SHOTARO , TANAKA HIROYUKI , MIMURA TAKASHI
Abstract: PROBLEM TO BE SOLVED: To provide a laminated film preeminently excellent in heat resistance and fire retardancy and excellent in productivity. SOLUTION: The laminated film is obtained by laminating heat-resistant resin layers, each of which comprises polyamic acid wherein 70% or more of the whole unit structure is a unit structure represented by formula (I) and/or (II) [wherein, R is at least one group selected from formulae (III), X and Y in formula (III) are at least one group selected from -O-, -CH2-, -CO- and the like] and of which the imide ratio is not less than 50% on both surfaces of a thermoplastic resin film.
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公开(公告)号：JP2001315283A
公开(公告)日：2001-11-13
申请号：JP2000135521
申请日：2000-05-09
Applicant: TORAY INDUSTRIES
Inventor： TANAKA SHOTARO , TANAKA HIROYUKI , MIMURA TAKASHI
IPC: C08J7/04 , B29C55/02 , B32B27/20 , B32B27/36 , C08K3/00 , C08K3/34 , C08K5/00 , C08L101/14 , G11B5/73
Abstract: PROBLEM TO BE SOLVED: To provide a laminated polyester film which shows high bending strength for the small thickness and further, far outstanding tear resistance which generally tends to deteriorate when the elastic modulus of an ordinary film is high. SOLUTION: This laminated polyester film has a laminated coating film containing inorganic plate particles and a water-soluble or a water-dispersed resin as main constituted components formed at least on one of the faces of a polyester film. The elastic modulus of at least either of the long axial direction or the width direction of the film is 6 GPa or more.
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公开(公告)号：JP2002321329A
公开(公告)日：2002-11-05
申请号：JP2002032525
申请日：2002-02-08
Applicant: TORAY INDUSTRIES
Inventor： TANAKA SHOTARO , TANAKA HIROYUKI , MIMURA TAKASHI
Abstract: PROBLEM TO BE SOLVED: To provide a laminated polyester film which has high bending strength even when film thickness is decreased, and a manufacturing method therefor. SOLUTION: In this laminated polyester film in which a heat-resistant resin layer comprising polyamide acid and having a resin whose imidization rate is 50% or more as a main ingredient is laminated at least on one side of the polyester film, elastic modules of at least either one side of the laminated polyester film in the long shaft direction or that in the width direction is 6 GPa or more.
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Patent Agency Ranking
公开(公告)号：JP2000238124A
公开(公告)日：2000-09-05
申请号：JP4597399
申请日：1999-02-24
Applicant: TORAY INDUSTRIES
Inventor： MIMURA TAKASHI , KOJIMA SATOSHI , TANAKA SHOTARO
Abstract: PROBLEM TO BE SOLVED: To reduce abrasion and to improve lubricity by forming the number of recessions of a specified ratio on the surface of a biaxially oriented heat resistant film. SOLUTION: A heat resistant film in which its heat resistant resin has no melting point and no decomposition point in its glass transition point 200-300 deg.C is formed, for example, from an aromatic polyamide resin or its precursor. The biaxially oriented heat resistant film is obtained by stretching the unstretched film 1.05-3.0 times in both longitudinal and cross directions and heat-treating the stretched film. In this process, fine recessions of 3000-500,000/mm2 are formed on the surface of the film. When the number of the recessions is below 3000/mm2 enough lubricity can not be obtained. When the number of the recessions is above 500,000/mm2, no further improvement is obtained. The average central line roughness of the surface having the recessions of 3-100 nm is desirable in terms of lubricity and smoothness.
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公开(公告)号：JP2000233439A
公开(公告)日：2000-08-29
申请号：JP3847099
申请日：1999-02-17
Applicant: TORAY INDUSTRIES
Inventor： MIMURA TAKASHI , KOJIMA SATOSHI , TANAKA SHOTARO
Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a novel heat resistant resin film in place of a metal belt method which deteriorates the quality of the film by flaws and corrosion. SOLUTION: A layer containing a heat resistant resin as a main component which is dissolved in a solvent is applied at least on one side of a polyester film which was stretched biaxially to complete crystal orientation. The coated film, after being dried, is subjected to a process in which the heat resistant film layer is peeled off from the polyester film, a process in which the separated heat resistant film is stretched in the longitudinal direction and/or in the width direction, and a process in which the stretched film is heat-set.
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公开(公告)号：JP2003200545A
公开(公告)日：2003-07-15
申请号：JP2002306698
申请日：2002-10-22
Applicant: TORAY INDUSTRIES
Inventor： TANAKA SHOTARO , TSUCHIMOTO TATSURO , MIMURA TAKASHI
Abstract: PROBLEM TO BE SOLVED: To provide a laminated film showing high interlayer adhesive properties, excellent resistance to heat and solvent and flame retardancy, and to provide a method for manufacturing this laminated film. SOLUTION: The laminated film is formed of a resin layer A and a resin layer B laminated, in that order, on both sides of a thermoplastic resin film. The resin layer A is constituted of a polyester resin or a constituent component composed mainly of the polyester resin, and the resin layer B is constituted of a polyamide acid or a resin composed mainly of the polyamide acid. In addition, this laminated film shows that an imidation rate of the polyamide acid is 50% or higher. COPYRIGHT: (C)2003,JPO
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公开(公告)号：JP2000177004A
公开(公告)日：2000-06-27
申请号：JP36275698
申请日：1998-12-21
Applicant: TORAY INDUSTRIES
Inventor： MIMURA TAKASHI , KOJIMA SATOSHI , TANAKA SHOTARO
Abstract: PROBLEM TO BE SOLVED: To laminate uniformly at a high speed by a method in which a layer mainly containing a heat resistant resin soluble in a dipolar non-protonic solvent is applied on at least one side of a thermoplastic film before the completion of crystal orientation, preliminary stretching is done at the boiling point of the solvent or below, and heat treatment is done at the boiling point of the solvent or above. SOLUTION: A layer mainly containing a heat resistant resin soluble in a dipolar non-protonic solvent is applied on at least one side of a thermoplastic film before the completion of crystal orientation, and the film is stretched at a temperature below the boiling point of the solvent by a preliminary and simultaneous biaxial orientation method and heat-treated at a temperature above the boiling point of the solvent. A polyester film is preferable as the thermoplastic film in terms of transparency, dimensional stability, mechanical properties, adhesion to a heat resistant resin layer to be laminated, and others. As the solvent, N-methyl-2-pyrrolidone, dimethylformamide, dimethylsulfoxide, and others are used. An aromatic polyamide is preferable is a heat resistant resin.
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公开(公告)号：JP2002029019A
公开(公告)日：2002-01-29
申请号：JP2001113626
申请日：2001-04-12
Applicant: TORAY INDUSTRIES
Inventor： TANAKA HIROYUKI , TANAKA SHOTARO , MIMURA TAKASHI
IPC: B32B27/36 , B29C55/14 , B29K67/00 , C08K3/00 , C08L101/00 , C08L101/12
Abstract: PROBLEM TO BE SOLVED: To provide a biaxially oriented laminated polyester film characterized in that a dimensional change ratio and a rise in the coefficient of friction are reduced after long-term use under constant load at a high temperature and suitable for use as a high capacity magnetic tape. SOLUTION: The biaxially oriented laminated polyester film is obtained by providing a lamination part comprising an organic polymer or inorganic matter on at least one surface of a biaxially oriented polyester film and the elastic modulus in the longitudinal direction and/or lateral direction of this film is 7.0 GPa or more, the heat shrinkage factor thereof at 100 deg.C measured in the same direction is 0.50% or less and the creep compliance thereof after the elapse of 30 min under a load condition of 28 MPa at 50 deg.C measured in the same direction is 0.05-0.30 GPa-1.
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