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公开(公告)号：JP2004009599A
公开(公告)日：2004-01-15
申请号：JP2002167423
申请日：2002-06-07
Applicant: TORAY INDUSTRIES
Inventor： MORITA REIKO , TANAKA HIROYUKI , MATSUI RYOSUKE
Abstract: PROBLEM TO BE SOLVED: To provide a laminated polyester film for a metal laminate excellent in heat resistance, lamination properties, impact resistance and molding processability and suitable for a metal can, in particular an aluminum can. SOLUTION: The laminated polyester film is obtained by laminating a layer (B-layer) comprising polyester 3 with a melting point of 170-250°C on at least one surface of a polyester layer (A-layer) comprising a mixture of 70-20 wt.% of polyester with a melting point of 246-270°C and 30-80 wt.% of polyester with a melting point of 180-240°C. The thickness ratio of the B-layer in all of the layers is 1-10%. COPYRIGHT: (C)2004,JPO
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公开(公告)号：JP2003127307A
公开(公告)日：2003-05-08
申请号：JP2001323341
申请日：2001-10-22
Applicant: TORAY INDUSTRIES
Inventor： MORITA REIKO , MATSUI RYOSUKE , TANAKA HIROYUKI
Abstract: PROBLEM TO BE SOLVED: To provide a laminated white polyester film for metal laminate which is excellent in laminating properties, wear resistance and molding processability, and also has a beautiful surface after being bonded with metal plates, particularly an aluminum plate and molded, and is suitable for metal cans, particularly an aluminum can. SOLUTION: The polyester film is obtained by laminating a layer (B-layer) made of polyester 3 using ethylene terephthalate and/or butylene terephthalate as a main repeating unit on at least one surface of a polyester layer (A-layer) which is prepared by mixing 80 to 20 wt.% of polyester 1 using ethylene terephthalate of a melting point at 246 to 270 deg.C as a main repeating unit and 20 to 80 wt.% of polyester 2 using butylene terephthalate of a melting point at 180 to 240 deg.C as a main repeating unit. The film has 30 to 55 mmol/kg of COOH terminal group amount and the laminated white polyester film for metal laminate is prepared by mixing the A-layer and/or the B-layer with a white pigment.
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公开(公告)号：JP2001335650A
公开(公告)日：2001-12-04
申请号：JP2001080710
申请日：2001-03-21
Applicant: TORAY INDUSTRIES
Inventor： TAKAHASHI KOZO , MATSUI RYOSUKE , KIMURA MASAHIRO
Abstract: PROBLEM TO BE SOLVED: To obtain a biaxially oriented polyester film for lid of metal can excellent in moldability, shock resistance and opening properties, and very useful for the lid of a metal can produced by mold machining. SOLUTION: The biaxially oriented polyester film for the lid of the metal can is characterized in that this film is a polyester composed of a polyester A 60 to 95 wt.% having ethylene terephthalate and/or ethylene naphthalate as main constituents and a polyester B 5 to 40 wt.% having a glass transition temperature of 60 deg.C or below, the main melting point is 230 to 265 deg.C, and the plane orientation coefficient is 0.05 to 0.15.
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公开(公告)号：JP2000345013A
公开(公告)日：2000-12-12
申请号：JP15770899
申请日：1999-06-04
Applicant: TORAY INDUSTRIES
Inventor： MATSUI RYOSUKE , TAKAHASHI KOZO , KIMURA MASAHIRO
Abstract: PROBLEM TO BE SOLVED: To obtain a composition showing excellent laminating ability, impact resistance and a taste characteristic by mixing a non-crystalline or low crystalline polyester B with a crystalline polyester A, the weight ratio being specific, to give a polyester resin having a carboxy end group of not less than a specific amount. SOLUTION: A polyester resin M having not less than 25 equivalents/ton of a carboxy end group is obtained by mixing a non-crystalline or low crystalline polyester B with a crystalline polyester A, the weight ratio of A to B being 9/1 to 1/9. A polyester resin N made of a crystalline polyester C having a melting point of 245 to 280 deg.C is disposed at least on one side of the polyester resin M to give a laminated item. The crystalline polyester A is polyethylene terephthalate or the like or a copolymer thereof having a low copolymerization degree of not more than 15 mole % and a melting point of 200 to 280 deg.C. The non-crystalline polyester B is a polyester such as polyethylene terephthalate or the like which does not crystallize and contains a polymer having a copolymerization degree of not less than 25 mol%.
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公开(公告)号：JP2000273213A
公开(公告)日：2000-10-03
申请号：JP36646899
申请日：1999-12-24
Applicant: TORAY INDUSTRIES
Inventor： TAKAHASHI KOZO , MATSUI RYOSUKE , KIMURA MASAHIRO
Abstract: PROBLEM TO BE SOLVED: To obtain the subject film having excellent taste characteristics of contents, long-term preservability and reduction in a catalytic metal component, moldable, processable by lamination, having excellent flavor characteristics and corrosion resistance after molding and processing as a packaging material by making the film include amorphous germanium as a catalytic metal remaining in the film. SOLUTION: This film contains amorphous germanium as a catalytic metal remaining in the film. Preferably the film satisfies the formula 3
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Patent Agency Ranking
公开(公告)号：JP2000212302A
公开(公告)日：2000-08-02
申请号：JP31333099
申请日：1999-11-04
Applicant: TORAY INDUSTRIES
Inventor： MATSUI RYOSUKE , KIMURA MASAHIRO , TAKAHASHI KOZO
Abstract: PROBLEM TO BE SOLVED: To obtain the subject film excellent in protecting properties for contents as a packaging material, especially taste characteristics, long-period preserving properties and a reduction in catalyst metal components by specifying the amount of a residual catalyst metal and amount of residual phosphorus element. SOLUTION: This film is obtained by regulating the ratio (M/P) of the amount of a residual catalyst metal (M: unit mmol.%) and the amount of residual phosphorus element (P: unit mmol.%) in a polyester film to =1.1 and >=90 mol.% in the acidic component constituting the polyester is preferably a terephthalic acid component and/or a 2,6-naphthalenedicarboxylic acid component.
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公开(公告)号：JP2000177000A
公开(公告)日：2000-06-27
申请号：JP28135699
申请日：1999-10-01
Applicant: TORAY INDUSTRIES
Inventor： KIMURA MASAHIRO , MATSUI RYOSUKE , TAKAHASHI KOZO
Abstract: PROBLEM TO BE SOLVED: To provide a biaxially oriented polyester film for molding having excellent taste characteristics and excellent corrosion resistance even after severe molding like exceeding 50% of a reduction ratio of a can cover capable of dealing with severe molding such as drawing, ironing or the like. SOLUTION: This biaxially oriented polyester film for molding is made of a polyester A containing as a constituting component at least one type selected from an ethylene terephthalate and an ethylene naphthalate in such a manner that a refractive index of the film in its thickness direction exceeds 1.545 and a difference between the index in a lengthwise direction and the index in a thickness direction is 0.05 or more. A polyester B having a melting point of a range of 200 to 260 deg.C is laminated at least on one surface of the biaxially oriented polyester film for molding.
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公开(公告)号：JPH10305541A
公开(公告)日：1998-11-17
申请号：JP5074298
申请日：1998-03-03
Applicant: TORAY INDUSTRIES
Inventor： MATSUI RYOSUKE , TAKAHASHI KOZO , KIMURA MASAHIRO
IPC: B32B15/09 , B29C55/12 , B29K67/00 , B29L7/00 , B29L9/00 , B32B15/08 , B32B27/36 , C08G63/183 , C08G63/189 , C08G63/83
Abstract: PROBLEM TO BE SOLVED: To provide a biaxially oriented polyester film for laminate adapted to a metal can manufactured by molding by dealing with severe molding in the case of molding a can and incorporating taste characteristic or particularly excellent taste characteristics after retorting. SOLUTION: A laminate film is obtained by disposing a B-layer containing polyester B having a melting point of lower than 246 deg.C as a main component on at least one surface of an A-layer containing polyester A having a melting point of 246 deg.C or higher. In this case, a face orientation coefficient of the A layer of the film is 0.08 to 0.14.
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公开(公告)号：JP2006341546A
公开(公告)日：2006-12-21
申请号：JP2005170667
申请日：2005-06-10
Applicant: TORAY INDUSTRIES
Inventor： MATSUI RYOSUKE , MANABE ISAO , SUMI SAORI
IPC: B32B27/36
Abstract: PROBLEM TO BE SOLVED: To provide a biaxially stretched polyester film which shows excellence in not only flex pinhole resistance required for a packaging material but also stick pinhole resistance. SOLUTION: The biaxially stretched polyester film is a laminate film which comprises a polyester layer (1) composed of 60 to 90 mass% of a polyester resin (A) having an ethylene terephthalate unit as a major component unit and 40 to 10 mass% of a polyester resin (B) having a butylene terephthalate unit as a major component unit, and a polyester layer (2) containing less polyester resin (B) than the polyester layer (1) and being placed on each of both surfaces of the polyester layer (1), wherein the film has a surface orientation coefficient of 0.16-0.175 and shows an absolute value of the difference between a refraction index in the lengthwise direction and that in the widthwise direction of from 0.0001 to 0.01. COPYRIGHT: (C)2007,JPO&INPIT
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公开(公告)号：JP2003113259A
公开(公告)日：2003-04-18
申请号：JP2002215167
申请日：2002-07-24
Applicant: TORAY INDUSTRIES
Inventor： TANAKA KUNIMASA , MATSUI RYOSUKE , YOSHIDA MINORU
Abstract: PROBLEM TO BE SOLVED: To provide a biaxially oriented polyester film having pinhole-resistant characteristics which a biaxially oriented nylon film has and also having good moldability which a conventional biaxially oriented polyester film and the biaxially oriented nylon film have not. SOLUTION: This biaxially oriented polyester film comprises a resin component composed of (A) 55-95 wt.% resin having 240-265 deg.C melting point and comprising >=90 wt.% polyester component composed of ethylene terephthalate and/or ethylene naphthalate and (B) 5-45 wt.% resin having 185-235 deg.C melting point and comprising >=70 wt.% polyester component, and the polyester film has properties comprising (1) >=200 MPa loss modulus (E") at a peak temperature of β disperse and (2) >=140 MPa breaking strength of the film or (1') >=55% recovery factor of deformation of the film after 20% pulling at 0 deg.C and (2) >=140 MPa breaking strength of the film.
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