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公开(公告)号：JPH11227137A
公开(公告)日：1999-08-24
申请号：JP3306098
申请日：1998-02-16
Applicant: TORAY INDUSTRIES
Inventor： MATSUI RYOSUKE , KIMURA MASAHIRO , TAKAHASHI KOZO
Abstract: PROBLEM TO BE SOLVED: To contrive to stabilize the formability and taste characteristics of this film by a method wherein the particle density of a layer mainly made of a polyester B arranged on at least one side of a layer mainly made of a polyester A. SOLUTION: The preferable melting points of a polyester A and/or a polyester B, which are normally obtained by polycondensation-reacting a dicarboxylic acid component such as a terephthalic acid or the like and a glycol component such as an ethylene glycol or the like are 246 deg.C or higher from the view points of taste characteristics and heat resistance. Further, the preferable difference between the melting point of the polyester A and that of the polyester B is 10 deg.C or less. In order to realize the excellent formability, especially the adhesion between the film and a metal plate after retorting, the long term stability after forming, the particle density of internal particle or the like within the surface mainly made of the polyester B must be below 500 ppm. The particle density is more preferably below 300 ppm, since the separation of the film from the metal plate by retorting can be more suppressed. If the particle density exceeds beyond the above-mentioned range, particles play the role of the nuclei of crystallization and the crystallization at lamination or at forming is accelerated, resulting in developing the easy separation between the film and the metal plate.
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公开(公告)号：JPH1110725A
公开(公告)日：1999-01-19
申请号：JP17182497
申请日：1997-06-27
Applicant: TORAY INDUSTRIES
Inventor： TAKAHASHI KOZO , MATSUI RYOSUKE , KIMURA MASAHIRO
Abstract: PROBLEM TO BE SOLVED: To manufacture properly a polyester film for deposition suitable for demonstrating the gas barrier properties of oxygen and water vapor of the polyester film for transparent deposition, and use the film widely for food packaging. SOLUTION: A biaxially oriented polyester film is composed of polyester of melting point of 250-280 deg.C as a main component, and provide with a fusion sub-peak (Ts) of the film of 210-245 deg.C, a planar orientation coefficient of 0.155-0.18, a birefringence (Δn) in the film longitudinal direction and the width direction of (-0.04)-(-0.005) and a centerline average roughness (Ra) of at least one face of 0.005-0.03 μm.
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公开(公告)号：JP2002348387A
公开(公告)日：2002-12-04
申请号：JP2001160663
申请日：2001-05-29
Applicant: TORAY INDUSTRIES
Inventor： MATSUI RYOSUKE , TAKAHASHI KOZO , YOSHIDA MINORU
Abstract: PROBLEM TO BE SOLVED: To provide a polyester film for metal lamination excellent in laminatability, formability, taste characteristics, and impact resistance and suitable for a metal container. SOLUTION: This polyester film is prepared by mixing (A) 30-80 wt.% polyester having a melting point of 246-270 deg.C and mainly comprising repeating ethylene terephthalate units with (B) 70-20 wt.% polyester mainly comprising repeating butylene terephthalate units. The amount of terminal COOH groups in the polyester film is lower than 35 mmol/kg.
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公开(公告)号：JP2002187963A
公开(公告)日：2002-07-05
申请号：JP2000388611
申请日：2000-12-21
Applicant: TORAY INDUSTRIES
Inventor： TAKAHASHI KOZO , MATSUI RYOSUKE , YOSHIDA MINORU
IPC: B65D65/02 , B32B15/08 , B32B15/09 , B32B27/36 , B65D65/40 , C08J3/22 , C08J5/18 , C08K3/08 , C08K5/101 , C08L67/02
Abstract: PROBLEM TO BE SOLVED: To prepare a biaxially oriented polyester film showing excellent releasability even after repeated use, use after a molding process, and use under a water atmosphere, and further exhibiting a stable performance with a small dispersion, and having excellent releasability. SOLUTION: This biaxially oriented polyester film comprises a film consisting of a polyester comprising an ethylene terephthalate unit and/or an ethylene phthalate unit as a principal constituting component, the melting point of the film being 180-270 deg.C, the film comprising carnauba wax of 0.1-2 wt.% (X wt.%) and a germanium element (Y ppm) of an amount satisfying the equation; 10X
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公开(公告)号：JP2000289024A
公开(公告)日：2000-10-17
申请号：JP9958999
申请日：1999-04-07
Applicant: TORAY INDUSTRIES
Inventor： MATSUI RYOSUKE , KIMURA MASAHIRO , TAKAHASHI KOZO
IPC: C08J5/18 , B29B11/14 , B29C51/08 , B29C55/12 , B29K67/00 , C08G63/183 , C08G63/189 , C08L67/02
Abstract: PROBLEM TO BE SOLVED: To deal with severe molding together with excellent moldability, heat resistance as a packaging material and to perform excellent adhesive properties, impact resistance or the like by setting a difference between a maximum value and a minimum value of a surface orientation coefficient in a specific range of a film to a specific value or below, and specifying the coefficient. SOLUTION: After a polyethylene terephthalate is sufficiently vacuum dried, melt extruded, and brought into close contact with a casting drum, thereby forming an unoriented sheet. Then, the sheet is sequentially biaxially oriented to a biaxially oriented film. Here, spots when brought into contact with the drum and oriented are suppressed, and a difference between a maximum value and a minimum value of a surface orientation coefficient in a range of square of 20 cm of a film is set to 0.007 or below. Further, orienting conditions, heat treating conditions are set to suitable ranges, and hence a mean surface orientation coefficient in the same range is set to 0.11 to 0.15. Thus, excellent moldability, impact resistance and further a long term preservability can be provided.
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Patent Agency Ranking
公开(公告)号：JP2000143838A
公开(公告)日：2000-05-26
申请号：JP31811598
申请日：1998-11-09
Applicant: TORAY INDUSTRIES
Inventor： KIMURA MASAHIRO , TAKAHASHI KOZO , MATSUI RYOSUKE
Abstract: PROBLEM TO BE SOLVED: To obtain a polyester film improved in the suitability for preserving the contents, the taste properties of the contents, and the long-term storability of the contents, the reduction of catalyst metallic components, and corrosion resistance by selecting a film specified in the concentration of catalyst metallic elements remaining in the film and the concentration of phosphorus remaining in the film. SOLUTION: An acid component at least 80 mol%, desirably, at least 95 mol% of which comprises terephthalic acid and/or naphthalenedicartboxylic acid is reacted with a glycol component at least 95 mol% of which comprises ethylene glycol in the presence of a titanium/silicon double oxide catalyst and a phosphorus compound to obtain a polyester having a melting point of 200-280 deg.C. This polyester is mixed with 0.005-0.5 wt.% particles having a particle diameter of 0.01-5 μm, and the resultant mixture is molded into a film, and this film is oriented at a ratio of 1.5-10.0 in the machine direction to obtain a packaging polyester film satisfying the relationships: 2
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公开(公告)号：JPH11255921A
公开(公告)日：1999-09-21
申请号：JP8303198
申请日：1998-03-13
Applicant: TORAY INDUSTRIES
Inventor： KIMURA MASAHIRO , MATSUI RYOSUKE , TAKAHASHI KOZO
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 relaxation time HT1 of a specific time on more in the nuclear magnetic resonance(NMR). SOLUTION: This objective film constitutes of a biaxially oriented polyester film having the relaxation time HT1 of 3.2 seconds in the NMR. In order to control the relaxation time as stated above, for example, the particles included in the film as silica or the like are surface-treated with ethylene glycol under heating and the resultant ethylene glycol slurry is added to the film, preferably in an amount of =246 deg.C, contains
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公开(公告)号：JPH11151752A
公开(公告)日：1999-06-08
申请号：JP33769397
申请日：1997-11-20
Applicant: TORAY INDUSTRIES
Inventor： TAKAHASHI KOZO , MATSUI RYOSUKE , KIMURA MASAHIRO
Abstract: PROBLEM TO BE SOLVED: To enhance adhesiveness or taste characteristics after retorting by using a polyester film specified in its melt peak temp. as a main component, and specifying a surface orientation coefficient and the coefficient of linear expansion in the longitudinal direction of the film at specific temp. SOLUTION: In a polyester film for metal panel laminating molding processing, a polyester B with a melt peak temp. of 215-245 deg.C is laminated on at least a single surface and the temp. difference between the melt peak temp. of a polyester A and that of the polyester B is 5-30 deg.C. The melt peak temp. of the polyester A is 215-260 deg.C and, in a biaxially stretched film, a surface orientation coefficient is 0.095-0.13 mainly from a point of lamination properties and moldability and it is necessary to set the coefficient of linear expansion of the film to (-140×10 )-(-5×10 K ) at 125 deg.C in the longitudinal direction of the film mainly from an aspect of the enhancement of the adhesiveness of the film and a steel panel.
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公开(公告)号：JP2002127340A
公开(公告)日：2002-05-08
申请号：JP2000324241
申请日：2000-10-24
Applicant: TORAY INDUSTRIES
Inventor： MATSUI RYOSUKE , TAKAHASHI KOZO , YOSHIDA MINORU
Abstract: PROBLEM TO BE SOLVED: To provide a polyester film which can be easily laminated to a tinplate with a sufficient strength and also possesses an excellent flavor property. SOLUTION: A polyester film for laminating a tinplate is a laminated film consisting of a substrate layer made of a polyester A having a melting point of 246-270 deg.C and an adhesive layer made of a polyester B having a melting point of 200 deg.C-the melting point of the polyester A and arranged on at least one surface of the substrate layer. An practical heat treating temperature for the laminated film is the melting point of the polyester B-that of the polyester A.
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公开(公告)号：JP2001301025A
公开(公告)日：2001-10-30
申请号：JP2000124131
申请日：2000-04-25
Applicant: TORAY INDUSTRIES
Inventor： TAKAHASHI KOZO , MATSUI RYOSUKE , KIMURA MASAHIRO
IPC: C08J5/18 , B29C55/12 , B32B15/08 , B32B15/09 , C08K5/08 , C08K5/3415 , C08K5/3447 , C08L67/02
Abstract: PROBLEM TO BE SOLVED: To provide a biaxially oriented colored polyester film for laminating a metal plate capable of manufacturing a metal can or the like having excellent beauty by laminating to the metal plate and molding and having excellent heat resistance and processability. SOLUTION: The biaxially oriented colored polyester film for laminating the metal plate comprises a polyester containing an ethylene terephthalate unit and/or an ethylene naphthalate unit as main constituents and a color tone of a value an according to a method to JIS Z-8722 of 0 to 50 and a value b of 10 to 50.
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