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公开(公告)号：CA2279393A1
公开(公告)日：1999-04-29
申请号：CA2279393
申请日：1998-10-20
Applicant: TORAY INDUSTRIES
Inventor： HORIUCHI MITSUHIRO , TSUKUDA AKIMITSU , SUEOKA MASANORI
Abstract: An aromatic polyamide film, which is a laminated film comprising at least two layers characterized in that at least one outermost layer (A) of the film is one made from a mixture comprising an aromatic polyamide and one or more other polymers, has a content of the other polymers of 0.1 to 10 wt.%, and satisfies the relationships: 0.01t/d0.5, 0.05s/L1 (wherein d represents the thickness (.mu.m) of the layer (A); t represents the diameter (.mu.m) of the equivalent circle of the other polymers; and L and s represent the major and minor axes (.mu.m) thereof, respectively). The film is free from creasing and telescoping in the wind-up step and is excellent in surface wear resistance, thus being particularly useful as a high-productivity base film for magnetic recording media.
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公开(公告)号：AT263015T
公开(公告)日：2004-04-15
申请号：AT97917424
申请日：1997-04-17
Applicant: TORAY INDUSTRIES
Inventor： TSUKUDA AKIMITSU , HORIUCHI MITSUHIRO , TSUZUKI TOSHIHIRO
IPC: B29D7/01 , C08J5/18 , G11B5/73 , G11B5/733 , B29C55/12 , B32B27/34 , B29K77/00 , B29K105/16 , B29L7/00 , B29L9/00
Abstract: The present invention relates to aromatic polyamide film which is characterized in that on at least one face thereof the number of projections of height at least 20nm but less than 50nm is from 10 to 10 per mm , and the number of projections of height at least 50nm but less than 100nm is from 0 to 3 x 10 per mm . Further, the present invention also offers a method of producing an aromatic polyamide film which is characterized in that, in a method of producing aromatic polyamide film from a solution obtained by adding to an aromatic polyamide solution a particle-containing slurry formed by dispersing particles of particle diameter 10 to 300nm in a liquid medium of 10 poise or less, such that the amount of said particles added in terms of the aromatic polyamide is 0.005 to 4.5wt%, the relative standard deviation in the diameters of said particles is no more than 0.8 and, furthermore, there is used a particle-containing slurry where the initial filterability index Q1 of said particle-containing slurry and the filterability index Q2 after the passage of 500ml of liquid satisfy the following relation. While the film of the present invention is also ideal for use as flexible printed substrates, capacitors and printer ribbons, etc, since it is possible to realise extremely high levels of both output characteristics and durability, it is especially suitable for magnetic recording media, in particular for computer external memory and digital video tape where high density and high precision are demanded.
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公开(公告)号：AT514552T
公开(公告)日：2011-07-15
申请号：AT08720730
申请日：2008-02-14
Applicant: TORAY INDUSTRIES
Inventor： TAKADA YASUSHI , HORIUCHI MITSUHIRO , YANAGIBASHI MASATO
IPC: B32B27/36
Abstract: [Problem to be solved] This invention provides a laminated adhesive film excellent in the adhesive property to a metal layer, especially excellent in the adhesive property to a metalized layer, the adhesive property after a heat and wet test and the adhesive property after solvent tests using various chemicals. [Solution] A laminated adhesive thermoplastic resin film, comprising a laminated layer containing two polyester resins different from each other in glass transition temperature and a melamine-based crosslinking agent (C) as main components and having a surface energy of 48 to 55 mN/m, formed at least on one surface of the thermoplastic resin film, wherein the glass transition temperature of the polyester resin (A) higher in glass transition temperature is 110°C or higher; the glass transition temperature of the polyester resin (B) lower in glass transition temperature is 60°C to lower than 110°C; and the amount of the melamine-based crosslinking agent (C) is 75 to 200 parts by weight per 100 parts by weight in total of said two polyester resins.
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公开(公告)号：DE69728354D1
公开(公告)日：2004-05-06
申请号：DE69728354
申请日：1997-04-17
Applicant: TORAY INDUSTRIES
Inventor： TSUKUDA AKIMITSU , HORIUCHI MITSUHIRO , TSUZUKI TOSHIHIRO
Abstract: The present invention relates to aromatic polyamide film which is characterized in that on at least one face thereof the number of projections of height at least 20nm but less than 50nm is from 10 to 10 per mm , and the number of projections of height at least 50nm but less than 100nm is from 0 to 3 x 10 per mm . Further, the present invention also offers a method of producing an aromatic polyamide film which is characterized in that, in a method of producing aromatic polyamide film from a solution obtained by adding to an aromatic polyamide solution a particle-containing slurry formed by dispersing particles of particle diameter 10 to 300nm in a liquid medium of 10 poise or less, such that the amount of said particles added in terms of the aromatic polyamide is 0.005 to 4.5wt%, the relative standard deviation in the diameters of said particles is no more than 0.8 and, furthermore, there is used a particle-containing slurry where the initial filterability index Q1 of said particle-containing slurry and the filterability index Q2 after the passage of 500ml of liquid satisfy the following relation. While the film of the present invention is also ideal for use as flexible printed substrates, capacitors and printer ribbons, etc, since it is possible to realise extremely high levels of both output characteristics and durability, it is especially suitable for magnetic recording media, in particular for computer external memory and digital video tape where high density and high precision are demanded.
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公开(公告)号：DE69839873D1
公开(公告)日：2008-09-25
申请号：DE69839873
申请日：1998-10-20
Applicant: TORAY INDUSTRIES
Inventor： SUEOKA MASANORI , HORIUCHI MITSUHIRO , TSUKUDA AKIMITSU
Abstract: The present invention is an aromatic polyamide film, which is a laminated film consisting of at least two layers, comprising an aromatic polyamide and 0.1 wt% to 10 wt% of at least one or more different polymers, being contained at least in the outermost layer (layer A) of the film, subject to the condition that the following formulae are satisfied where d is the thickness of the layer A ( mu m); t, the circle equivalent diameter of the isles of the different polymer ( mu m); L, the major axis of the isles ( mu m); and s, the minor axis of the isles ( mu m). The aromatic polyamide film of the present invention is especially useful as a base film of a magnetic recording medium with high productivity since it is free from the wrinkling and weaving caused at the time of film winding and excellent in abrasion resistance on the film surface.
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Patent Agency Ranking
公开(公告)号：DE69728354T2
公开(公告)日：2005-02-17
申请号：DE69728354
申请日：1997-04-17
Applicant: TORAY INDUSTRIES
Inventor： TSUKUDA AKIMITSU , HORIUCHI MITSUHIRO , TSUZUKI TOSHIHIRO
Abstract: The present invention relates to aromatic polyamide film which is characterized in that on at least one face thereof the number of projections of height at least 20nm but less than 50nm is from 10 to 10 per mm , and the number of projections of height at least 50nm but less than 100nm is from 0 to 3 x 10 per mm . Further, the present invention also offers a method of producing an aromatic polyamide film which is characterized in that, in a method of producing aromatic polyamide film from a solution obtained by adding to an aromatic polyamide solution a particle-containing slurry formed by dispersing particles of particle diameter 10 to 300nm in a liquid medium of 10 poise or less, such that the amount of said particles added in terms of the aromatic polyamide is 0.005 to 4.5wt%, the relative standard deviation in the diameters of said particles is no more than 0.8 and, furthermore, there is used a particle-containing slurry where the initial filterability index Q1 of said particle-containing slurry and the filterability index Q2 after the passage of 500ml of liquid satisfy the following relation. While the film of the present invention is also ideal for use as flexible printed substrates, capacitors and printer ribbons, etc, since it is possible to realise extremely high levels of both output characteristics and durability, it is especially suitable for magnetic recording media, in particular for computer external memory and digital video tape where high density and high precision are demanded.
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7.发明专利
公开(公告)号：CA2225074A1
公开(公告)日：1997-10-30
申请号：CA2225074
申请日：1997-04-17
Applicant: TORAY INDUSTRIES
Inventor： HORIUCHI MITSUHIRO , TSUKUDA AKIMITSU , TSUZUKI TOSHIHIRO
Abstract: An aromatic polyamide film characterized in that the number of projections having a height of at least one surface of 20 nm to less than 50 nm is 103106/mm2, and in that the number of projections having a height of 50 nm to less than 100 nm is 0-3 x 104. A method of manufacturing aromatic polyamide films from a solution prepared by adding a particle-containing slurry, which is obtained by dispersing particles of 10-300 nm in diameter into a liquid medium of at most 10 P in viscosity, to an aromatic polyamide solution so that the amount of addition of the particles accounts for 0.005-4.5 wt.% of the aromatic polyamide, characterized in that a relative standard deviation of the diameter of the particles is set to be at most 0.8, and in that in initial filtrability index Q1 of the particle-containing slurry and a filtrability index Q2 attained after 500 ml of the liquid has passed satisfy the following relationship: Q2/Q10.3. This film can be suitably used for a flexible printed board, a capacitor and a printer ribbon. Since the output characteristics and durability of this film are compatible at high levels, the film is suitable, especially for an external memory for a magnetic recording medium, especially a computer in which a high density and a high accuracy are required, and a tape for a digital video.
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8.发明公开AROMATIC POLYAMIDE FILM, METHOD OF MANUFACTURING THE SAME AND MAGNETIC RECORDING MEDIUM USING THE SAME FILM 失效芳族聚酰胺薄膜，用于生产，为此薄膜制成的磁记录介质
公开(公告)号：EP0842754A4
公开(公告)日：1999-03-17
申请号：EP97917424
申请日：1997-04-17
Applicant: TORAY INDUSTRIES
Inventor： TSUKUDA AKIMITSU , HORIUCHI MITSUHIRO , TSUZUKI TOSHIHIRO
CPC classification number: G11B5/733 , B29D7/01 , B29K2077/10 , B29K2105/16 , C08J5/18 , C08J2377/10 , Y10S428/90 , Y10T428/24355 , Y10T428/25 , Y10T428/31725 , Y10T428/31728
Abstract: An aromatic polyamide film characterized in that the number of projections having a height of at least one surface of 20 nm to less than 50 nm is 10?3-106/mm2¿, and in that the number of projections having a height of 50 nm to less than 100 nm is 0-3 x 104. A method of manufacturing aromatic polyamide films from a solution prepared by adding a particle-containing slurry, which is obtained by dispersing particles of 10-300 nm in diameter into a liquid medium of at most 10 P in viscosity, to an aromatic polyamide solution so that the amount of addition of the particles accounts for 0.005-4.5 wt.% of the aromatic polyamide, characterized in that a relative standard deviation of the diameter of the particles is set to be at most 0.8, and in that in initial filtrability index Q1 of the particle-containing slurry and a filtrability index Q2 attained after 500 ml of the liquid has passed satisfy the following relationship: Q2/Q1≥0.3. This film can be suitably used for a flexible printed board, a capacitor and a printer ribbon. Since the output characteristics and durability of this film are compatible at high levels, the film is suitable, especially for an external memory for a magnetic recording medium, especially a computer in which a high density and a high accuracy are required, and a tape for a digital video.
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公开(公告)号：EP2110242A4
公开(公告)日：2010-06-23
申请号：EP08720730
申请日：2008-02-14
Applicant: TORAY INDUSTRIES
Inventor： TAKADA YASUSHI , HORIUCHI MITSUHIRO , YANAGIBASHI MASATO
IPC: B32B27/36
CPC classification number: B32B27/36 , Y10T428/25 , Y10T428/2813 , Y10T428/31786 , Y10T428/31794
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公开(公告)号：JP2000344915A
公开(公告)日：2000-12-12
申请号：JP2000098099
申请日：2000-03-31
Applicant: TORAY INDUSTRIES
Inventor： TSUKUDA AKIMITSU , SUEOKA MASANORI , HORIUCHI MITSUHIRO
Abstract: PROBLEM TO BE SOLVED: To obtain the subject film having a surface roughness capable of being adjusted according to the purpose by heating the film at the time of processing in the film comprising an organic polymer. SOLUTION: A solution dissolving an organic polymer is formed into a film by a film-producing method by using the solution. The objective roughness- changeable film is obtained by regulating the value of Ra2/Ra1 (Ra1 is the average roughness of the film before the heat treatment; Ra2 is the average roughness after the heat treatment) so as to be =7 GPa Young's modulus at least in one direction. The organic polymer is preferably an aromatic polyamide containing >=50 mol%; unit of NH-Ar1-NHCO- Ar2-CO and/or NH-Ar3-CO (Ar1 to Ar3 are each phenylene or the like). When the organic polymer is the aromatic polyamide, the heat treatment is preferably carried out at 150-350 deg.C.
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