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公开(公告)号：DE69023351T2
公开(公告)日：1996-04-04
申请号：DE69023351
申请日：1990-01-08
Applicant: TORAY INDUSTRIES
Inventor： NISHINO SATORU , ABE KOICHI , FUKUYAMA TAKEO , MINAMIZAWA HIDEHITO
Abstract: A biaxially oriented polyester film having excellent scratch resistance and chipping resistance by the inclusion of particles (A) having an average primary particle diameter of 5-300 nm, an average degree of aggregation of 5-100 and a Mohs'hardness of 6-10 by the content of 0.01-5 wt.%. The scratch resistance and chipping resistance of the film can be further increased by the inclusion of particles (B) having an average particle diameter of 0.3-3 mu m, a Mohs'hardness smaller than that of particles (A) and/or non-incorporated particles.
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公开(公告)号：DE3071725D1
公开(公告)日：1986-10-02
申请号：DE3071725
申请日：1980-09-30
Applicant: TORAY INDUSTRIES
Inventor： TSUNASHIMA KENJII , FUKUYAMA TAKEO , MATSUYAMA SHIGERU
IPC: H01G4/18
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公开(公告)号：CA1180261A
公开(公告)日：1985-01-02
申请号：CA391887
申请日：1981-12-09
Applicant: TORAY INDUSTRIES
Inventor： TSUNASHIMA KENJI , YOSHII TOSHIYA , FUKUYAMA TAKEO
Abstract: A three-layered laminated film consisting essentially of (A) a center layer consisting of a crystalline low molecular weight polyolefin having an intrinsic viscosity of 0.5 to 1.4 and (B) two surface layers disposed on both sides of the center layer and each consisting of a crystalline polyolefin (b) having a melting point higher than that of the crystalline low molecular weight polyolefin (a), whereby the thickness of the center layer (A) accounts for 30 to 98 %, especially 50 to 85 %, of the total thickness of the laminated film. The invention also relates to applications of the laminated film. The laminated film of the invention has excellent finger-tearability and high toughness but little tendency to curl, to whiten when torn, to get turbid and fibrillated, and so forth. The laminated film is effectively used as an adhesive tape or other applications.
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公开(公告)号：DE69213052T2
公开(公告)日：1997-02-06
申请号：DE69213052
申请日：1992-03-06
Applicant: TORAY INDUSTRIES
Inventor： OKAZAKI IWAO , ABE KOICHI , MINAMIZAWA HIDEHITO , FUKUYAMA TAKEO
Abstract: A biaxially oriented laminated film having at least three layers has excellent abrasion resistance and electromagnetic conversion property when the film is used as the base film of a magnetic recording media. The biaxially oriented laminated film comprises at least one outermost layer containing particles A, the particle density ratio at a surface layer of the particles A is not less than 0.01, and the mean primary particle size D of the particles A and the thickness T of the outermost layer containing the particles A satisfies the equation; D
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公开(公告)号：DE3169605D1
公开(公告)日：1985-05-02
申请号：DE3169605
申请日：1981-12-04
Applicant: TORAY INDUSTRIES
Inventor： TSUNASHIMA KENJI , YOSHII TOSHIYA , FUKUYAMA TAKEO
Abstract: A three-layered laminated film consisting essentially of (A) a center layer consisting of a crystalline low molecular weight polyolefin having an intrinsic viscosity of 0.5 to 1.4 and (B) two surface layers disposed on both sides of the center layer and each consisting of a crystalline polyolefin (b) having a melting point higher than that of the crystalline low molecular weight polyolefin (a), whereby the thickness of the center layer (A) accounts for 30 to 98 %, especially 50 to 85 %, of the total thickness of the laminated film. The invention also relates to applications of the laminated film.The laminated film of the invention has excellent finger-tearability and high toughness but little tendency to curl, to whiten when torn, to get turbid and fibrillated, and so forth. The laminated film is effectively used as an adhesive tape or other applications.
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Patent Agency Ranking
公开(公告)号：DE69213052D1
公开(公告)日：1996-10-02
申请号：DE69213052
申请日：1992-03-06
Applicant: TORAY INDUSTRIES
Inventor： OKAZAKI IWAO , ABE KOICHI , MINAMIZAWA HIDEHITO , FUKUYAMA TAKEO
Abstract: A biaxially oriented laminated film having at least three layers has excellent abrasion resistance and electromagnetic conversion property when the film is used as the base film of a magnetic recording media. The biaxially oriented laminated film comprises at least one outermost layer containing particles A, the particle density ratio at a surface layer of the particles A is not less than 0.01, and the mean primary particle size D of the particles A and the thickness T of the outermost layer containing the particles A satisfies the equation; D
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公开(公告)号：DE69023351D1
公开(公告)日：1995-12-14
申请号：DE69023351
申请日：1990-01-08
Applicant: TORAY INDUSTRIES
Inventor： NISHINO SATORU , ABE KOICHI , FUKUYAMA TAKEO , MINAMIZAWA HIDEHITO
Abstract: A biaxially oriented polyester film having excellent scratch resistance and chipping resistance by the inclusion of particles (A) having an average primary particle diameter of 5-300 nm, an average degree of aggregation of 5-100 and a Mohs'hardness of 6-10 by the content of 0.01-5 wt.%. The scratch resistance and chipping resistance of the film can be further increased by the inclusion of particles (B) having an average particle diameter of 0.3-3 mu m, a Mohs'hardness smaller than that of particles (A) and/or non-incorporated particles.
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公开(公告)号：CA2062480A1
公开(公告)日：1992-09-07
申请号：CA2062480
申请日：1992-03-05
Applicant: TORAY INDUSTRIES
Inventor： OKAZAKI IWAO , ABE KOICHI , MINAMIZAWA HIDEHITO , FUKUYAMA TAKEO
Abstract: Disclosed is a biaxially oriented laminated film having at least three layers which has excellent abrasion resistance and electromagnetic conversion property when the film is used as the base film of a magnetic recording media. The biaxially oriented laminated film comprises at least one outermost layer containing particles A, the particle density ratio at surface layer of the particles A is not less than 0.01, and the mean primary particle size D of the particles A and the thickness T of the outermost layer containing the particles A satisfies the equation; D? T? 200D.
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公开(公告)号：JPH07159926A
公开(公告)日：1995-06-23
申请号：JP30402793
申请日：1993-12-03
Applicant: TORAY INDUSTRIES
Inventor： KIDA KENJI , FUKUYAMA TAKEO , IMAI SHIRO
Abstract: PURPOSE:To obtain recovering property from curling while maintaining transpar ency, mechanical characteristics and dimensional stability by specifying the size of curls. CONSTITUTION:The size of curls of the film is specified to 5-100m . It is preferable that the polyester film has a multilayer structure and consists of at least three layers to obtain recovering property for curling. These layers A, A', B are formed in such a manner that the layer A is 1.2-10 times as thick as the layer A'. The polyester used essentially consists of aromatic dibasic acid and glycols. As for the dibasic acid, terephthalic acid, isophthalic acid, 2,6-naphthalene dicarboxylic acid, diphenylsulfone dicarboxylic acid and the like are used. As for the glycols, ethyleneglycol, propyleneglycol, tetramethyleneglycol, propyleneglycol and the like are used.
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公开(公告)号：JPH02194029A
公开(公告)日：1990-07-31
申请号：JP1464689
申请日：1989-01-23
Applicant: TORAY INDUSTRIES
Inventor： FUKUYAMA TAKEO , ABE KOICHI , NISHINO SATOSHI
Abstract: PURPOSE:To obtain the title film excellent in both scratch and chipping resistances by biaxially orienting an unstretched film of a polyester containing specified amount of specified rutile TiO2 and specified inert particles by biaxial stretching. CONSTITUTION:An unstretched film of a polyester (e.g. polyethylene terephthalate) containing 0.2-3wt.% rutile TiO2 particles of a mean particle diameter d1 of 0.005-1mum and a shape factor of 0.6-1 and 0.01-0.2wt.% inert. particles (e.g. colloidal silica) of a mean particle diameter d2 (d1
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