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91. 发明专利

JPH03281634A BIAXIALLY ORIENTED POLYESTER FILM 失效
公开(公告)号：JPH03281634A
公开(公告)日：1991-12-12
申请号：JP8684890
申请日：1990-03-30
申请人： TOYO BOSEKI , NIPPON MAGPHANE KK
发明人： SASAKI YASUSHI , OKUDAIRA TADASHI , KUZE KATSURO
IPC分类号： C08J5/18 , B29C55/12 , B29K67/00 , B29L7/00 , C08L67/02 , G11B5/73 , G11B5/733
摘要： PURPOSE:To produce the title film improved in surface smoothness and handling properties in high speed working by specifying the coefficient of static friction, 10-point average roughness, protrusion height and air escape speed between two films. CONSTITUTION:A lubricant is obtained by mixing 0.05 0.5wt.% inert particles having a mean particle diameter (D1) of 0.05-0.3mum, a dispersion of particle diameter of 25% or below and an areal ratio to a circumscribed circle, defined by the equation of 60% or above with 0.005-0.1wt.% inert particles having a mean particle diameter (D2) of 0.2-0.5mum, desirably having a D2/D1 ratio of 1.2 or above, having a dispersion of particle diameters of 25% or below and the above defined areal ratio of 60% or above and other inert particles. A polyester is mixed with the lubricant B, and the mixture is molded into a film. This film is biaxially oriented to obtain the title film which has fine protrusions on the surface, has a coefficient of static friction of below 2.0, a 10-point average roughness (noncontact three-dimensional roughness meter) of 0.4-0.7mum, has below 2000/mm protrusion of a height of 0.2mum or above and 20000/mm or above protrusions of a height of 0.025-0.2mum and has an air escape speed between two films of 700sec or below.

92. 发明专利

JP2020091494A 偏光子保護フィルム、偏光板及び液晶表示装置审中-公开
公开(公告)号：JP2020091494A
公开(公告)日：2020-06-11
申请号：JP2020020389
申请日：2020-02-10
申请人： TOYO BOSEKI
发明人： NAKASE KATSUTAKA , FUJITA ATSUSHI , MURATA KOICHI , SASAKI YASUSHI
IPC分类号： G02B5/30 , B32B7/022 , B32B7/023 , B32B27/36 , G02F1/1335
摘要：【課題】液晶パネルの反りを抑制することができる偏光子保護フィルム、偏光板及び液晶表示装置を提供することである。【解決手段】偏光子の一方の面に積層される偏光子保護用ポリエステルフィルムであって、以下の要件(1)及び(2)を満たす偏光子保護用ポリエステルフィルム。(1)偏光子の透過軸と平行な方向における、前記ポリエステルフィルムの収縮力Ffが800N/m以上9000N/m以下である、(2)偏光子の透過軸と平行な方向における、前記ポリエステルフィルムの収縮力Ffと偏光子の吸収軸と平行な方向における、前記ポリエステルフィルムの収縮力Fvの比(Ff/Fv)が2.5以上12.0以下である。【選択図】なし

93. 发明专利

JP2008030475A LAMINATED POLYESTER FILM FOR MOLDING AND ITS MANUFACTURING PROCESS 审中-公开
公开(公告)号：JP2008030475A
公开(公告)日：2008-02-14
申请号：JP2007174030
申请日：2007-07-02
申请人： TOYO BOSEKI
发明人： KUMANO KATSUFUMI , HARAGUCHI HIROKI , SASAKI YASUSHI , TANABE MASATOSHI , ITO KATSUYA
IPC分类号： B32B27/36 , B29C55/12 , B29C55/20 , B29K67/00 , B29L7/00 , B29L9/00
摘要： PROBLEM TO BE SOLVED: To provide a laminated polyester film for molding excellent in moldability at low temperatures and under low pressures, transparency, solvent resistance, shape stability (heat shrinkage properties and thickness variations), and impact resistance, and also to provide its manufacturing process. SOLUTION: The laminated polyester film for molding is a biaxially oriented laminated polyester film obtained by laminating layer B on one or both sides of layer A. The layer A and the layer B are both composed of a copolymeric polyester or a copolymeric polyester and a homo-polyester. The melting point of the layer A (TmA:°C) and that of the layer B (TmB:°C) satisfy formulas (1): 260>TmB>TmA>200, and (2): 50>TmB-TmA>5, at the same time. Both the layer A and the layer B have an oriented structure and have a heat shrinkage at 150°C of ≤6.0%, and a thickness variation of ≤10%. COPYRIGHT: (C)2008,JPO&INPIT

94. 发明专利

JP2003231230A WHITE LAMINATED POLYESTER FILM 审中-公开
公开(公告)号：JP2003231230A
公开(公告)日：2003-08-19
申请号：JP2002344256
申请日：2002-11-27
申请人： TOYO BOSEKI
发明人： MORISHIGE CHIKAO , KUMAGAI EIJI , HIGASHIURA MASAYA , SASAKI YASUSHI , KUMANO KATSUFUMI , NISHI MUTSUO , SHIMIZU TOSHIYUKI
IPC分类号： B42D15/10 , B32B27/36
摘要： PROBLEM TO BE SOLVED: To provide a white laminated polyester film having high surface strength and excellent in whiteness, the adhesion with various inks, water- resistance adhesion, antistatic properties and scratch resistance. SOLUTION: The white laminated polyester film is constituted by providing a coating layer (C-layer) at least on the single surface of a substrate material comprising a white polyester film having a two or more-layered laminated structure. The substrate material is formed by laminating a polyester resin composition layer (A-layer), which comprises a polyester resin (II) and a master batch polyester resin (III) containing a white pigment, on at least the single surface of a layer (B-layer) mainly comprising a polyester resin (I) and the intrinsic viscosities of the polyester resins (I)-(III) satisfy a specific relational expression. The C-layer is provided just above the A-layer and contains a modified resin and a specific high-molecular antistatic agent. The breaking strength and the surface intrinsic resistance value of the C-layer are set to specific ranges. COPYRIGHT: (C)2003,JPO

95. 发明专利

JP2003182010A RELEASE FILM FOR MANUFACTURING CERAMIC SHEET, AND FILM LAMINATE 审中-公开
公开(公告)号：JP2003182010A
公开(公告)日：2003-07-03
申请号：JP2001390170
申请日：2001-12-21
申请人： TOYO BOSEKI
发明人： BABA SHUNICHIRO , MIZUNO NAOKI , SASAKI YASUSHI , HOSHIO ATSUSHI
IPC分类号： B32B27/36 , B32B27/00
摘要： PROBLEM TO BE SOLVED: To provide a release film for manufacturing a ceramic sheet, suppressing the positional shift of the internal electrode in a laminated ceramic condenser to the utmost when the laminated ceramic condenser or the like is manufactured and excellent in the releasability of the ceramic sheet and the surface smoothness of a release layer. SOLUTION: The release film for manufacturing the ceramic sheet has the release layer subjected to drying treatment under heating and tension. The dimensional change ratio of the release film, at a time when the film is heat- treated at 100°C for 5 min in a state such that a tension of 4.7 MPa is longitudinally applied to the film, satisfies the formulae: |ΔLTD-ΔLMD|≤0.8 and -0.6≤ΔLMD≤0.6 [wherein, ΔLMD is the dimensional change ratio (%) in the longitudinal direction of the film and ΔLTD is the dimensional change ratio (%) in the lateral direction of the film] at the same time. COPYRIGHT: (C)2003,JPO

96. 发明专利

JP2003089152A METHOD FOR MANUFACTURING UNIAXIALLY ORIENTED POLYESTER FILM 审中-公开
公开(公告)号：JP2003089152A
公开(公告)日：2003-03-25
申请号：JP2001282392
申请日：2001-09-17
申请人： TOYO BOSEKI
发明人： IKEHATA YOSHITOMO , SASAKI YASUSHI , KUROIWA HARUNOBU
IPC分类号： G02B5/30 , B29C55/08 , B29K67/00 , B29L7/00 , C08J5/18
摘要： PROBLEM TO BE SOLVED: To provide a method for stably manufacturing a uniaxially oriented polyester film capable of being used in a state bonded to the constituent member or the like of a large-sized liquid crystal display device unnecessary to peel at the time of inspection, having stable optical characteristics in an axial direction, having good inspection properties, and suitable as a substrate of a surface protective film and a release film. SOLUTION: The method for manufacturing the uniaxially oriented polyester film includes a process for laterally stretching a polyester film in the stretching zone in a tenter, and a process for thermally fixing the laterally stretched polyester film in a thermal fixing zone. The temperature of the stretching zone is (Tg+70)-(Tg+10) deg.C, the temperature of the thermal fixing zone is (Tg+130)-(Tg+30) deg.C (herein, Tg is the glass transition temperature of the polyester film), the temperature of the stretching zone is lower than that of the thermal fixing zone, the temperature difference between them is 20-60 deg.C, and the speeds of the respective rolls present between the lateral stretching process and a product take-up machine is 99.0-100.0% with respect to the speed in the flow direction of the film at the time of lateral stretching.

97. 发明专利

JP2002249609A OPTICAL COVERING FILM 失效
公开(公告)号：JP2002249609A
公开(公告)日：2002-09-06
申请号：JP2001048724
申请日：2001-02-23
申请人： TOYO BOSEKI
发明人： MIZUNO NAOKI , SASAKI YASUSHI , TAKI HIROSHI , GYOBU SHOICHI , NAKAJIMA TAKAHIRO
IPC分类号： G02B1/10 , B32B27/36 , C08G63/84 , C08J7/04 , G02B1/11 , G02B1/14
摘要： PROBLEM TO BE SOLVED: To prepare an optical covering film excellent in transparency, adhesive properties, water resistance and color, showing no discoloration or precipitation of foreign matters by remelt molding, and showing no foreign matters caused by polyester polycondensation catalyst which does not include a conventional antimony, which is mainly composed of a polyester produced by using a new polyester polycondensation catalyst which does not include a conventional polycondensation catalyst such as an antimony compound, a germanium compound and a titanium compound as a main component. SOLUTION: The optical covering film has a biaxially oriented polyester film as a base material, and a covering layer mainly composed of a polymer resin and a particle is provided on at least one side of the base material. The polyester film includes, as a main constituent, the polyester which is polymerized by using a polycondensation catalyst containing an aluminum and/or its compound and a phenolic compound. The covering film has a total light transmittance of 90% or higher, a water resistance of 90 or higher, and a value of discoloration after remelt molding of 10 or less.

98. 发明专利

JP2002248725A COATING FILM FOR OPTICS 失效
公开(公告)号：JP2002248725A
公开(公告)日：2002-09-03
申请号：JP2001048552
申请日：2001-02-23
申请人： TOYO BOSEKI
发明人： MIZUNO NAOKI , SASAKI YASUSHI , GYOBU SHOICHI , NAKAJIMA TAKAHIRO
IPC分类号： B32B27/36 , C08G63/87
摘要： PROBLEM TO BE SOLVED: To provide a coating film for optics, for which a polyester manufactured by using a new polyester polycondensation catalyst, wherein a conventional polycondensation catalyst such as an antimony compound, a germanium compound or a titanium compound is not made the major component, is made a main constituent component, and which is excellent in transparency and color tone, and does not have foreign matters due to antimony. SOLUTION: For this coating film for optics, a biaxially drawn polyester film is made the base material, and a coating layer mainly constituted of a polymeric resin and particles is provided at least on one surface of the base material. In this case, for the polyester film, a polyester, which is polymerized using the polycondensation catalyst containing aluminum and/or its compound and a phenol based compound, is made the major constituent component. Also, the haze of the film is 2.0% or lower.

99. 发明专利

JP2002086650A WHITE LAMINATED POLYESTER FILM AND ITS PRODUCTION METHOD 审中-公开
公开(公告)号：JP2002086650A
公开(公告)日：2002-03-26
申请号：JP2001213017
申请日：2001-07-13
申请人： TOYO BOSEKI
发明人： KUMANO KATSUFUMI , YAMADA KOJI , SASAKI YASUSHI , NISHI MUTSUO , TAKAHASHI AKIRA , ITO KATSUYA
IPC分类号： B32B27/36
摘要： PROBLEM TO BE SOLVED: To provide a white laminated polyester film which is excellent in concealability, whiteness, and film-making stability and is suitable for an information recording/printing material. SOLUTION: In the laminated polyester film, a polyester resin layer (layer A) containing a white pigment is laminated at least on one side of a polyester resin layer (layer B) containing a shading material. The optical density(OD) of the film is at least 0.8 in a 25 μm reduced value when the thickness is 25 μm or below and at least 1.5 in a 100 μm reduced value when the thickness exceeds 25 μm. The color L value of the surface of the layer A is at least 85 and the color b value is 2 or below.

100. 发明专利

JP2001334623A CAVITY-CONTAINING POLYESTER LAMINATE FILM FOR PRINTING FORM 失效
公开(公告)号：JP2001334623A
公开(公告)日：2001-12-04
申请号：JP2000155160
申请日：2000-05-25
申请人： TOYO BOSEKI
发明人： YAMADA KOJI , NISHI MUTSUO , KUMANO KATSUFUMI , TAKAHASHI AKIRA , SASAKI YASUSHI
IPC分类号： C08J9/00 , B32B5/22 , B32B27/00 , B32B27/36 , C08L67/00 , C08L75/04
摘要： PROBLEM TO BE SOLVED: To provide a cavity-containing polyester laminate film suitable as a material for printing a form and having excellent adhesive properties of an ultraviolet curable ink to an oxidative polymerization ink and a rear carbon ink. SOLUTION: In the cavity-containing polyester laminate film comprising a polyester resin and a composition containing a thermoplastic resin non- compatible with the polyester resin containing many cavities caused by the non-compatible thermoplastic resin dispersed in fine particle-like state in the polyester resin in the film, a cavity laminating number density (pieces/μm) defined by the density=number of cavities in a film thickness direction (pieces)/ thickness of the film (μm) is 0.20 pieces/μm or more, and an easily adhesive layer is laminated on at least one side surface.

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