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公开(公告)号：JPH1110726A
公开(公告)日：1999-01-19
申请号：JP17182597
申请日：1997-06-27
Applicant: TORAY INDUSTRIES
Inventor： MATSUI RYOSUKE , KIMURA MASAHIRO , TAKAHASHI KOZO
Abstract: PROBLEM TO BE SOLVED: To obtain excellent gas barrier properties by setting centerline mean roughness in a specific area to a specific value without protrusion having a specific size or more on at least one side surface. SOLUTION: Centerline mean roughness (Ra) per square of 2 μm without protrusion having at least 10 nm or more on one side surface is set to 0.7 nm or less. The polyester is preferably constituted by material having 70 mol% or more of ethylene terephthalate unit and/or ethylene naphthalate unit in view of heat resistance and film producing properties. And, as a method for setting the Ra to 0.7 nm or less, a method using external particles and/or internal particles having monodisperse article size or a method for heat treating polyester at within 15C from its melting point after it is biaxially oriented is preferable. As a method for manufacturing the film, for example, after polyester is dried, it is melted, extruded, brought into close contact with a casting drum, and cooled to be solidified to obtain an unoriented sheet. As a method for manufacturing a film, a sequentially biaxially orienting type or simultaneously biaxially orienting type according to a tenter type is used.
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公开(公告)号：JP2002355888A
公开(公告)日：2002-12-10
申请号：JP2001162020
申请日：2001-05-30
Applicant: TORAY INDUSTRIES
Inventor： HASHIMOTO KOKICHI , MATSUI RYOSUKE , YOSHIDA MINORU
Abstract: PROBLEM TO BE SOLVED: To provide a biaxially stretched polyester film for molding excellent in environmental properties, dimensional stability, printability and moldability. SOLUTION: The biaxially stretched polyester film for molding is formed from a polyester film comprising a polyester containing an ethylene terephthalate unit and/or an ethylene naphthalate unit as a main constituent. The melting point of this polyester film is not less than 245 deg.C and the stress at the time of 200%-stretching at 80 deg.C and heat shrinkage factor thereof are specified.
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公开(公告)号：JP2002161149A
公开(公告)日：2002-06-04
申请号：JP2000360981
申请日：2000-11-28
Applicant: TORAY INDUSTRIES
Inventor： TAKAHASHI KOZO , MATSUI RYOSUKE , YOSHIDA MINORU
Abstract: PROBLEM TO BE SOLVED: To provide a biaxially oriented polyester film which is excellent in heat resistance, impact resistance and especially has longitudinal tearability. SOLUTION: The biaxially oriented polyester film with longitudinal tearability comprises polyester (A) of 60-95 wt.% having as a main component ethylene terephthalate and/or ethylenenaphthalate and polyester (B) of 5-40 wt.% having glass transition temperature of
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公开(公告)号：JP2002160721A
公开(公告)日：2002-06-04
申请号：JP2000356395
申请日：2000-11-22
Applicant: TORAY INDUSTRIES
Inventor： MATSUI RYOSUKE , TAKAHASHI KOZO , YOSHIDA MINORU
Abstract: PROBLEM TO BE SOLVED: To provide a polyester film for molding a container, which can be easily molded without causing cracks when molded on the container singly or after lamination on a basic material, eliminates the occurrence of the cracks even against a shock caused due to a fall and the like after molding, makes it difficult to cause delamination on a boundary face when stuck on the base material, and has excellent shock resistance. SOLUTION: The polyester film for molding the container has the maximum value of an amorphous orientation parameter
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公开(公告)号：JP2001219464A
公开(公告)日：2001-08-14
申请号：JP2000367247
申请日：2000-12-01
Applicant: TORAY INDUSTRIES
Inventor： MATSUI RYOSUKE , TAKAHASHI KOZO , KIMURA MASAHIRO
Abstract: PROBLEM TO BE SOLVED: To provide a polyester film for a container suitable for a metallic can for 2 piece food showing excellence in lamination, moldability, taste and easiness of taking-out a content. SOLUTION: A polyester film for a container has not less than 100,000/mm2 of a density of a projection having a 100 to 50 nm height at least on one surface and 0.10 to 0.15 of a surface orientation coefficient.
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Patent Agency Ranking
公开(公告)号：JP2001055454A
公开(公告)日：2001-02-27
申请号：JP23023599
申请日：1999-08-17
Applicant: TORAY INDUSTRIES
Inventor： MATSUI RYOSUKE , TAKAHASHI KOZO , KIMURA MASAHIRO
Abstract: PROBLEM TO BE SOLVED: To obtain the subject film which has excellent abrasion resistance, excellent moldability and excellent taste characteristic and is suitable for laminating to a substrate, by forming a plurality of uneven portions each having one or more projected portions at the adjacent points in one or more sunk portions on the surface of the film and specifying a melting point. SOLUTION: This film for a laminate has the following characteristics. A plurality of uneven portions each having one or more projected portions in one or more sunk portions and/or a plurality of uneven portions each having one or more projected portions at one or more points adjacent to one or more sunk portions are formed on at least one surface of the film, and the film has a melting point of 246 to 270 deg.C. The area fraction of the sunk portions is preferably 1×10-3 to 5×10-1, and the breaking strengths of the film in the longitudinal direction and the width direction of the film are preferably >=120 MPa, respectively, at 150 deg.C. For example, a biaxially oriented film 1 has a plurality of sunk portions 4 each comprising a sunk portion 2, a projected portion 3, a sunk portion 2 and a projected portion 3.
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公开(公告)号：JP2000143839A
公开(公告)日：2000-05-26
申请号：JP31811698
申请日：1998-11-09
Applicant: TORAY INDUSTRIES
Inventor： KIMURA MASAHIRO , TAKAHASHI KOZO , MATSUI RYOSUKE
Abstract: PROBLEM TO BE SOLVED: To provide a polyester film for molding which has a good moldability, heat resistance and appearance and is suitable for mold processing, laminate mold processing or laminate mold processing wherein paper or a metal is a substrate or as containers. SOLUTION: The titled polyester film, wherein 93 mol% or more acid component composing the polyester comprises a terephthalic acid component and/or naphthalene dicarboxylic acid component, mainly comprises a polyester A satisfying the following formula I and II. Formula I: 55
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公开(公告)号：JP2000127322A
公开(公告)日：2000-05-09
申请号：JP23031799
申请日：1999-08-17
Applicant: TORAY INDUSTRIES
Inventor： MATSUI RYOSUKE , TAKAHASHI KOZO , KIMURA MASAHIRO
IPC: C08J5/18 , B32B15/08 , B32B15/09 , B32B27/36 , C08G63/183 , C08G63/189 , C08L67/02
Abstract: PROBLEM TO BE SOLVED: To provide a laminating polyester film, which can cope with a severe forming work at the forming of a container or the like, further is excellent not only in an adhesion, especially in an adhesion after retorting but also in taste characteristics and is suitable for a metal can or the like manufactured through a forming work after its lamination to a base material. SOLUTION: This film is produced by arranging a B layer made of a polyester B, the major constituent component of which is an ethylene terephthalate containing 6-20 mol% of an ethylene 2,6-naphthalene dicarboxylate, on at least one side of an A layer made of a polyester A, the major constituent component of which is an ethylene terephthalate unit containing 0.1-5 mol% of an ethylene 2,6-naphthalene dicarboxylate unit.
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公开(公告)号：JPH11255920A
公开(公告)日：1999-09-21
申请号：JP8302998
申请日：1998-03-13
Applicant: TORAY INDUSTRIES
Inventor： TAKAHASHI KOZO , MATSUI RYOSUKE , KIMURA MASAHIRO
Abstract: PROBLEM TO BE SOLVED: To obtain a polyester film for metal lamination and fabrication that has excellent abrasion resistance, taste characteristics, and adhesion after retorting and is useful for metallic cans by constituting the film with a biaxially oriented polyester film that has a low content of free aromatic dicarboxylic mono-methyl ester and contains over prescribed amounts of specific metals. SOLUTION: This objective film is constituted of a biaxially oriented polyester film having =100 ppm of the total metal content including Ti, Mn and Mg. This film preferably has a main melt peak of >=246 deg.C and a plane orientation coefficient of 0.100-0.120. In a preferred embodiment, the polyester of this film contains >=90 mol.% of ethylene terephthalate and/or ethylene naphthalate, has an intrinsic viscosity of >=0.651 dl/g and contains 0.01-50 wt.% of flocculated dry silica with an average particle size of 0.01-10 μm.
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公开(公告)号：JPH11254625A
公开(公告)日：1999-09-21
申请号：JP8303098
申请日：1998-03-13
Applicant: TORAY INDUSTRIES
Inventor： TAKAHASHI KOZO , MATSUI RYOSUKE , KIMURA MASAHIRO
IPC: B32B27/36 , B29C55/12 , B32B15/08 , B32B15/09 , C08G63/189
Abstract: PROBLEM TO BE SOLVED: To provide a polyester film for laminating a metal plate suitable for a metal can which can be subjected to a severe forming process when a can or the like is formed and in which improved lamination properties, taste properties, bubbling properties, and particularly excellent bond properties after retorting can be provided. SOLUTION: In the biaxially oriented laminated polyester film comprising two or more layers, a polyester of a nonmetallic plate side layer contains particles of 1 wt.% or less each having a shape function (a ratio of a maximum length D to a minimum length d) defined by an equation (D/d) of less than 1.1 in the film. A polyester of a metallic plate side layer contains particles of 0.05-1 wt.% each having a shape function of 1.1 or more and contains particles of 0.1 wt.% or less each having a shape function of less than 1.1.
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