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公开(公告)号：JPH11138693A
公开(公告)日：1999-05-25
申请号：JP31338397
申请日：1997-11-14
Applicant: TORAY INDUSTRIES
Inventor： OUCHI KUNIHIKO , TSUCHIYA TAKESHI , FUNAYAMA NOBUTAKA
IPC: B65D25/14 , B29C48/305 , B29C55/12 , B29C71/02 , B29D7/01 , B29K67/00 , B29L7/00 , B32B15/08 , B32B15/09 , B65D25/36 , C08J5/18 , C08L67/02 , B29C47/14
Abstract: PROBLEM TO BE SOLVED: To improve adhesion, moldability, and shock resistance by imparting orientation intensity ratios in ranges represented by specified expressions to a side laminated to a metallic sheet and a side not laminated to the metallic sheet. SOLUTION: When lamination is performed such that an orientation strength ratio Ha of a side laminated to a metallic sheet measured through a laser Raman spectroscopy method is made to be 0.8 in deflection vertical to the film thickness direction, and I ZD: Raman band strength measured near 1615 cm in deflection horizontal to the film thickness direction. The orientation strength Xi of the polyester film measured through X-ray diffraction is made to be 20-30 for the adhesion at the time of laminating, moldability at the time of can manufacturing, heat resistance, shock resistance, or the like.
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公开(公告)号：JPH09239826A
公开(公告)日：1997-09-16
申请号：JP5455596
申请日：1996-03-12
Applicant: TORAY INDUSTRIES
Inventor： TSUCHIYA TAKESHI , FUNAYAMA NOBUTAKA , OUCHI KUNIHIKO
Abstract: PROBLEM TO BE SOLVED: To provide the above polyester film excellent in the bonding strength of metal and a film and the moldability to a metal container, imparting excellent impact resistance and taste characteristics to the metal container after molding processing and hard to exert the effect of fluctuations of a temp. condition at a time of thermal lamination on the bonding strength of metal and the film, the moldability to the metal container and the impact resistance and taste characteristics of the metal container after molding processing. SOLUTION: In a biaxlally stretched single layer polyester resin film of which one surface is used in the lamination to metal, the surface orientation coefficient on the side of the surface laminated to metal of the film and that on the surface not laminated to metal thereof are controlled to spacific ranges and the value obtained by dividing the difference between the surface orientation coefficients of both surfaces of the film by the thickness of the film is set to 0.00015 or more.
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公开(公告)号：JPH09208720A
公开(公告)日：1997-08-12
申请号：JP2004396
申请日：1996-02-06
Applicant: TORAY INDUSTRIES
Inventor： FUNAYAMA NOBUTAKA , TSUCHIYA TAKESHI , KIDA KATSUMI
Abstract: PROBLEM TO BE SOLVED: To obtain the above film having a specific polyester layer treated with a corona discharge, excellent in adhesive property, forming property, impact resistance, taste characteristic, foaming property and change in a smell, and suitable for a food container. SOLUTION: This laminated polyester film used for laminating the one of surfaces of the film with a metal plate, has >=40 equivalent/ton content of carboxyl terminal groups in the polyester layer (A) laminated with the metal plate, and surface thereof is treated with a corona discharge. Further, it is preferable that an intrinsic viscosity of the polyester layer (B) not laminated with the metal plate is 0.6-0.9, of which difference from the intrinsic viscosity of the layer (A) is
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公开(公告)号：JP2002240143A
公开(公告)日：2002-08-28
申请号：JP2001046222
申请日：2001-02-22
Applicant: TORAY INDUSTRIES
Inventor： MINAMI TOSHIYUKI , NAKAGAWA KINZO , TSUCHIYA TAKESHI
Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing a polyester film of which the defect such as a scratch, a stickiness stain, a crater-shaped spot or the like to be generated in a stretching process is eliminated. SOLUTION: The polyester film is manufactured by using a ceramic roll of which the surface roughness is 0.03-0.04 μm as center line average roughness, the maximum depth is 1.0 μm or less, the number (roughness density) of recessed parts with a depth of 0.5 μm or more is 15 or less per 1 inch, and the hardness is 1,100 HV or more.
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公开(公告)号：JP2000251244A
公开(公告)日：2000-09-14
申请号：JP5387999
申请日：1999-03-02
Applicant: TORAY INDUSTRIES
Inventor： ONO MASAAKI , TSUCHIYA TAKESHI , SUZUI NOBUO
Abstract: PROBLEM TO BE SOLVED: To obtain a polyester film for magnetic recording media, suited to manufacturing high-capacity data storing tapes having low error rates. SOLUTION: A polyester film has an SRa of 2-5 nm and SRz of 10-40 nm on one surface A, the Young's modulus of this film is 5500 MPa or more in the length direction and 6500 MPa or more in the width direction, the thermal shrinkage ratio of this film at 100 deg.C for 30 min is 1.0% or less in the length direction and also in the width direction. A magnetic recording tape has a ferromagnetic metal film layer formed on the one surface A of the polyester film.
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Patent Agency Ranking
公开(公告)号：JPH1110724A
公开(公告)日：1999-01-19
申请号：JP16894497
申请日：1997-06-25
Applicant: TORAY INDUSTRIES
Inventor： TSUCHIYA TAKESHI , FUNAYAMA NOBUTAKA , OUCHI KUNIHIKO
IPC: C08J5/18 , B29C55/12 , B29D7/01 , B29K67/00 , B29L7/00 , B32B15/08 , B32B15/09 , B32B27/36 , C08K3/36 , C08L67/02
Abstract: PROBLEM TO BE SOLVED: To improve impact resistance and taste and perfume retentivity with retardence of foaming at the time of opening a can as a carbonated beverage container by setting height of protrusions and number of them per unit area on a film surface to specific values and setting a surface roughness of the film to a specific value. SOLUTION: Protrusions each having 400 nm of more of height on a film surface are set to 150 pieces/cm or less, and three-dimensional roughness of the film is set to 8 to 25 nm. A surface orientation coefficient of the polyester film is set to 0.101 to 0.118, its mean refractive index is preferably set to 1.595 to 1.600, and its melting point is preferably 215 to 240 deg.C. And, to control the film surface, as lubricating material particles, unshaped aggregate particles having a mean particle size of 0.1 to 0.8 μm (0.01 to 1.00 wt.%) are added and preferably oriented at a temperature higher by 15 to 50 deg.C than its glass transition temperature so that longitudinal draw rate is 2.5 to 3.5 times, lateral draw rate is 2.5 to 3.5 times and a product of the longitudinal and lateral draw rates becomes 11.0 times or less.
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公开(公告)号：JPH068319A
公开(公告)日：1994-01-18
申请号：JP16507192
申请日：1992-06-23
Applicant: TORAY INDUSTRIES
Inventor： TSUCHIYA TAKESHI , TSUCHIBUCHI MASANOBU , MOGI MASAHIKO
IPC: B29C55/12 , B29K67/00 , B29L7/00 , C08J5/18 , C08K3/00 , C08L67/00 , C08L67/02 , G11B5/73 , G11B5/733 , G11B5/704
Abstract: PURPOSE:To obtain a polyester film as a magnetic recording medium, which is excellent in scratch resistance, fits for repeated use and meets the requirements for higher image quality, by a method wherein the surface roughness of at least one side of film and the height and number of projections per unit area of the surface of the film are provided. CONSTITUTION:The surface of the film concerned is set to have the center-like mean surface roughness Ra of 10-30nm and, at the same time, the three-dimensional mean surface roughness SRa of 15-55nm. If the surface roughness of film is smaller than the above-mentioned range, the frictional coefficient of the resultant film becomes larger and if the surface roughness of film is larger than the above-mentioned range, unsatisfactory image quality results. Further, the number of projections having the height of 200-400nm is set to be 1,100 or more per 0.1nm and the number of projections having the height of 400-600 is set to be 600 or less per 0.1nm . If the former is not more than 1,100, unsatisfactory usage durability results. If the latter is not less than 600, poor image quality results. The film concerned can be obtained by adding 0.01-1.5vol.% of inactive particle having the average particle diameter of 0.1-1.0mum.
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公开(公告)号：JPH0632916A
公开(公告)日：1994-02-08
申请号：JP19219392
申请日：1992-07-20
Applicant: TORAY INDUSTRIES
Inventor： TSUCHIYA TAKESHI , TSUCHIBUCHI MASANOBU , MOGI MASAHIKO
Abstract: PURPOSE:To obtain a laminated polyester film which is less apt to suffer a surface damage and meets the requirements for higher durability and higher image quality by forming projections of specific sizes on at least one side of a film to make the surface have a specific roughness. CONSTITUTION:This film comprises a base layer and laminated layers, the laminated layer on at least either side having, on the surface, 1,200 or more projections per 0.1mm which are 200-400nm high and 400 or less projections per 0.1 mm which are 400-800nm high and having a three-dimensional mean surface rouahness (SRa) of 15-45nm and a central mean surface roughness (Ra) of 10-25nm.
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公开(公告)号：JP2001212919A
公开(公告)日：2001-08-07
申请号：JP2000028519
申请日：2000-02-07
Applicant: TORAY INDUSTRIES
Inventor： NISHINO SATOSHI , TOYODA KATSUYA , TSUCHIYA TAKESHI
Abstract: PROBLEM TO BE SOLVED: To provide a biaxially oriented polyester film showing a good winding form as a product even if the surface thereof is smooth. SOLUTION: In the biaxially oriented polyester film having a coating layer at least on its single surface, the coating layer has an island structure having island-like protruded parts and the island-like protruded parts with a length/ breadth ratio of 3.0 or less occupy 50% or more of all of the protruded parts.
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公开(公告)号：JP2000251245A
公开(公告)日：2000-09-14
申请号：JP5388099
申请日：1999-03-02
Applicant: TORAY INDUSTRIES
Inventor： ONO MASAAKI , TSUCHIYA TAKESHI , SUZUI NOBUO
Abstract: PROBLEM TO BE SOLVED: To obtain a polyester film for magnetic recording media, suited to manufacturing high-capacity data storing tapes having low error rates. SOLUTION: A polyester film has an SRa of 2-5 nm and SRz of 10-40 nm on one surface A, Young's modulus of 5500 MPa or more in the length direction, and Young's modulus of 6500 MPa or more in the width direction, the number of surface detects of more than 120 nm high existing on the polyester film A surface is 10 per 100 cm2, the thermal shrinkage ratio of this film at 100 deg.C for 30 min is 1.0% or less in the length direction and also in the width direction. A magnetic recording tape has a ferromagnetic metal film layer formed on the one surface A of the polyester film.
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