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公开(公告)号：JPH11140199A
公开(公告)日：1999-05-25
申请号：JP30707297
申请日：1997-11-10
Applicant: TORAY INDUSTRIES
Inventor： HASHIMOTO KOKICHI , KIMURA MASAHIRO
Abstract: PROBLEM TO BE SOLVED: To provide a film having excellent heat sealability and high gas barrier properties and also excellent in fabricability such as vacuum deposition, slitting and lamination and being desirable for various gas barrier packaging. SOLUTION: There is provided a non-oriented polyolefin film prepared by adding 0.01-0.5 wt.%, in total, additives to a polyolefin resin, wherein the absolute value of the percentage dimensional change of the non-oriented film in the longer direction is 2% or below when heated at 120 deg.C for 15 min, and the total amount of volatile component is 200 μg/g or below when the non-oriented film is heated at 130 deg.C for 5 min and measured with gas chromatography.
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公开(公告)号：JPH10120803A
公开(公告)日：1998-05-12
申请号：JP23451397
申请日：1997-08-29
Applicant: TORAY INDUSTRIES
Inventor： KIMURA MASAHIRO , TAKAHASHI KOZO , KOJIMA HIROJI
IPC: A23L3/00 , B29C51/08 , B29C55/12 , B29K67/00 , B29K105/16 , B29L7/00 , B32B15/08 , B32B15/09 , C08J5/18 , C08K3/34 , C08K7/16 , C08L67/00 , C08L67/02
Abstract: PROBLEM TO BE SOLVED: To obtain a polyester film excellent in formability, heat resistance and taste-keeping capability and suitable for a metallic can produced by forming and processing, by incorporating particles with a specified shape into a polyester. SOLUTION: Organic or inorganic particles in an amount of 0.005-10wt.% are incorporated into a polyester of which at least 93wt.% of the constituent units comprise ethylene terephthalate units and/or ethylene naphthalate units to give a biaxially oriented polyester film for forming a container. The particles used comprise those having a volume-mean particle diameter of 0.005-5.0μm, a relative standard deviation, represented by the formula (wherein σ is a relative standard deviation; D is a number average particle diameter μm; Di is a particle diameter μm; and n is the number of particles), of at most 0.5, a length/width ratio of (1.0 to 1.2):1, and a Mohs hardness of less than 7. A film excellent also in laminating characteristics and scraping resistance can be obtained by thus controlling the structure of film.
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公开(公告)号：JPH1044233A
公开(公告)日：1998-02-17
申请号：JP9710297
申请日：1997-04-15
Applicant: TORAY INDUSTRIES
Inventor： TAKAHASHI KOZO , KIMURA MASAHIRO , ABE KOICHI
Abstract: PROBLEM TO BE SOLVED: To improve laminating properties and heat resistance and in particular to improve taste characteristics manufactured by molding processing by constituting a specified amt. of constituting units of a polyester consisting of ethylene terephthalate unit and specifying crystalline size in a specified directional plane obtd. from X-ray diffraction measurement. SOLUTION: This film consists of a polyester wherein at least 93mol%, pref. at least 96mol% of the constitutional unit are ethylene terephthalate units. Biaxial drawing is necessary for the polyester wherein ethylene terephthalate is a main constitutional ingredient and crystal size of (100) plane obtd. by X-ray diffraction measurement is at most 6nm. It is pref. from the point of view for making moldability thereafter and impact resistance good that m.p. of this polyester is pref. 246-280 deg.C and furthermore, plane orientation coefficient is at most 0.17, especially pref. at most 0.15 for making laminating properties better.
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公开(公告)号：JPH107824A
公开(公告)日：1998-01-13
申请号：JP16583796
申请日：1996-06-26
Applicant: TORAY INDUSTRIES
Inventor： HARADA YUTAKA , KIMURA MASAHIRO , ABE KOICHI
Abstract: PROBLEM TO BE SOLVED: To prepare the subject film comprising an inorganic layered compound having a specific particle diameter and a water-soluble polymer and having high gas barrier property, adhesiveness, etc., under high moisture by formation of coating film whose surface parameter is controlled. SOLUTION: This film is obtained by forming a coating film composed mainly of (A) an inorganic layered compound having >=1μm, preferably >=5μm particle diameter and (B) a water-soluble polymer (preferably polyvinyl alcohol-based polymer) onto at least one face of a thermoplastic resin substrate (preferably an olefin-based resin) and has
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公开(公告)号：JPH09309147A
公开(公告)日：1997-12-02
申请号：JP5609397
申请日：1997-03-11
Applicant: TORAY INDUSTRIES
Inventor： KIMURA MASAHIRO , TAKAHASHI KOZO , ABE KOICHI
IPC: B21D22/20 , B29C55/12 , B29K67/00 , B29L7/00 , B29L9/00 , B32B15/08 , B32B15/09 , B32B27/36 , C08G63/183 , C08J5/18
Abstract: PROBLEM TO BE SOLVED: To improve moldability, heat resistance and palate characteristics by forming this polyester film of a polyester comprising ethylene terephthalate as a main ingredient and having its elongation at rupture in the longitudinal and the width direction satisfying a specific formula. SOLUTION: This biaxially stretched polyester film for molding a container comprises a polyester comprising ethylene terephthalate as a main ingredient and the elongation at rupture (S MD) in the longitudinal direction and the elongation at ruptuer (S TD) in the width direction are set to satisfy the formula 120% in that the moldability after thermal lamination of the metal sheet is improved. The thickness is preferably 3-50μm in terms of moldability, composite elongation/bending properties, impact resistance and palate properties.
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Patent Agency Ranking
公开(公告)号：JPH09155969A
公开(公告)日：1997-06-17
申请号：JP25857596
申请日：1996-09-30
Applicant: TORAY INDUSTRIES
Inventor： TAKAHASHI KOZO , KIMURA MASAHIRO , ABE KOICHI
IPC: C08J5/18 , B29C55/12 , B29K67/00 , B29L7/00 , B29L9/00 , B32B15/08 , B32B15/09 , B32B27/36 , C08L67/00 , C08L67/02
Abstract: PROBLEM TO BE SOLVED: To obtain a film having excellent moldability and taste characteristics by controlling amorphous Young's modulus to a specific value in view of the Young's modulus caused by the film amorphous ingredient. SOLUTION: It is necessary from the points of developing excellent moldability, impact resistance and taste characteristics that the amorphous Young's modulus in both the lengthwise direction and the width direction perpendicular to the lengthwise direction of biaxially orienting of a polyester film are 120 to 220kg/mm , preferably 130 to 210kg/mm or more preferably 150 to 190kg/mm . As a method for arriving the amorphous Young's modulus at 120 to 220kg/mm , it can be performed by adopting a high temperature orienting method at the time of manufacturing the film, and is not particularly limited. For example, it can be achieved by optimizing the intrinsic viscosity of the raw material, catalyst, diethylene glycol amount, orienting conditions, heat treating conditions.
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公开(公告)号：JPH09151265A
公开(公告)日：1997-06-10
申请号：JP31316995
申请日：1995-11-30
Applicant: TORAY INDUSTRIES
Inventor： KIMURA MASAHIRO , HARADA YUTAKA , ABE KOICHI
IPC: C08J7/04 , B32B9/00 , B32B27/16 , B32B27/20 , B32B27/32 , B32B27/40 , C08L29/02 , C08L29/04 , C08L75/00 , C08L75/06
Abstract: PROBLEM TO BE SOLVED: To provide a gas barrier film exhibiting gas barrier properties even at high humidity and having good adhesion of the constituent coating film to the substrate and good durability. SOLUTION: This gas barrier film is prepared by forming a coating film mainly consisting of a water-soluble polymer A, a water-soluble or water- dispersible urethane resin and an inorganic layered compound on at least either surface of a thermoplastic resin substrate. It is also possible that the water-soluble or water-dispersible urethane resin is a polyester urethane resin, and the coating film contains 0.01-10wt.% crosslinking agent.
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公开(公告)号：JPH09151263A
公开(公告)日：1997-06-10
申请号：JP31317095
申请日：1995-11-30
Applicant: TORAY INDUSTRIES
Inventor： HARADA YUTAKA , KIMURA MASAHIRO , ABE KOICHI
Abstract: PROBLEM TO BE SOLVED: To provide a gas barrier film exhibiting gas barrier properties even at high humidity, adhesion to the constituent coating film and durability. SOLUTION: This gas barrier film is prepared by forming a coating film mainly consisting of a water-soluble polymer A, a water-soluble or water- dispersible polymer B having a glass transition point of 70 deg.C or below and an inorganic layered compound on at least either surface of a thermoplastic resin substrate. It is also possible that polymer B is an acrylic polymer or a urethane polymer, and the coating film contains 0.01-10wt.% crosslinking agent.
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公开(公告)号：JPH09150492A
公开(公告)日：1997-06-10
申请号：JP24799596
申请日：1996-09-19
Applicant: TORAY INDUSTRIES
Inventor： KIMURA MASAHIRO , TAKAHASHI KOZO , ABE KOICHI
Abstract: PROBLEM TO BE SOLVED: To provide a laminated film excellent in moldability at a time of the molding of a can or the like, also excellent in impact resistance and taste characteristics and suitably used for a metal can produced by molding processing. SOLUTION: A laminated film consists of an A-layer composed of polyester A containing ethylene terephthalate or ethylene naphthalate as a main constitutional component and a B-layer based on polyester B2 obtained by copolymerizing polyester B1 and a long chain aliphatic dicarboxylic acid component having a C10 or more alkylene group. The B-layer contains 2-20wt.% of the long chain aliphatic dicarboxylic acid component having the 10C or more alkylene group.
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公开(公告)号：JPH09123338A
公开(公告)日：1997-05-13
申请号：JP21128896
申请日：1996-08-09
Applicant: TORAY INDUSTRIES
Inventor： TAKAHASHI KOZO , KIMURA MASAHIRO , ABE KOICHI
Abstract: PROBLEM TO BE SOLVED: To improve oxygen and steam gas barrier property of a transparent gas barrier film by providing a film consisting of inorganic oxide on at least one face of a polyester film and specifying refractive index of the film. SOLUTION: On at least one face of a polyester film, a film formed of inorganic oxide is provided by a continuous vacuum metallizer. For setting the refractive index of the film to 1.51-1.65, purity of an inorganic material, oxidation number of the inorganic oxide, and aging after metallization are adjusted and selected. Accordingly, the oxygen and steam gas barrier property of the gas barrier film can be improved, so that the film can be used in a wide range, mainly for packing foods.
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