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    RESIN COMPOSITION FOR METAL COATING
    75.
    发明专利
    RESIN COMPOSITION FOR METAL COATING 失效

    公开(公告)号：JPS54138055A

    公开(公告)日：1979-10-26

    申请号：JP4549578

    申请日：1978-04-18

    Applicant: TORAY INDUSTRIES

    Inventor： SUYAMA MASAYOSHI ,  YABE KENJI ,  ASAKURA MASAYOSHI

    IPC: C09D5/08 ,  C08K5/10 ,  C08L23/00 ,  C08L23/08 ,  C08L33/00 ,  C08L33/02 ,  C08L67/00 ,  C08L67/02 ,  C08L101/00 ,  C09D167/00

    Abstract: PURPOSE:To prepare the title resin composition having excellent film-forming property, adhesivity to metal, moldability, and corrosion resistance, by blending a specific polyester, a specific copolymer of a carboxylic acid ester and ethylene, and an ionomer. CONSTITUTION:A resin composition composed of (A) 20-70 wt% of a polyethylene terephthalate resin wherein >= 75 mol% of the dicarboxylic acid component is terephthalic acid (pref. the remaining part contains isophthalic acid), (B) 20-70 wt% of a polybutylene terephthalate resin wherein >= 60 mol% of the dicarboxylic acid component is terephthalic acid (pref. the remaining part contains isophthalic acid), (C) 0-25 wt% of an ionomer (e.g. Surlyn A, product of DuPont), and (D) 3-25 wt% of a copolymer of ethylene and an ester of an alpha,beta-unsaturated monocarboxylic acid and a saturated sliphatic alcohol, e.g. ethylene/ethyl acrylate copolymer, wherein (C) + (D) is 3-30 wt%.

    COMPOSITE FILM
    76.
    发明专利
    COMPOSITE FILM 失效

    公开(公告)号：JPS5443991A

    公开(公告)日：1979-04-06

    申请号：JP10997577

    申请日：1977-09-14

    Applicant: TORAY INDUSTRIES

    Inventor： YABE KENJI ,  ASAKURA MASAYOSHI ,  SODA ATSUHIKO

    IPC: B32B27/36 ,  B32B27/28 ,  B32B27/32 ,  B65D1/00 ,  B65D65/40

    Abstract: PURPOSE:To prepare a composite film useful for packaging and having excellent slipperiness, stiffness, heat sealability, adhesive properties and gas barrier properties, by laminating a plurality of sheets of composition comprising a specific polyester and ionomer. CONSTITUTION:A layer (A) comprising (a) 1-40wt% of polyethylene terephthalate (PET) consisting of 75-100mol% of terephthalic acid (TA) as an acid component and ethylene glycol as a main glycol component, (b) 30-85wt% of polybutylene terephthalate (PBT) comprising 60-100mol% of TA, and (c) 10-30wt% of an ionomer, is laminated onto a layer (B) comprising (d) 75-100wt% of PET or PBT comprising 90-100mol% of TA, and (e) 0-25wt% of an ionomer. The layer (A) is used to bond with paper, metal, glass, etc., and the layer (B) is used to heat-seal the film itself.

    BIAXIALLY ORIENTED POLYESTER FILM
    80.
    发明专利
    BIAXIALLY ORIENTED POLYESTER FILM 失效

    公开(公告)号：JP2000071405A

    公开(公告)日：2000-03-07

    申请号：JP24820798

    申请日：1998-09-02

    Applicant: TORAY INDUSTRIES

    Inventor： TSUNEKAWA TETSUYA ,  ASAKURA MASAYOSHI ,  EGASHIRA KENICHI

    IPC: B32B27/36 ,  B29C55/12 ,  B29K67/00 ,  B29L7/00 ,  B29L9/00 ,  G11B5/73

    Abstract: PROBLEM TO BE SOLVED: To provide superior rigidity and high heat shrinkage properties and outstanding conservation stability with insignificant irreversible dimensional change due to use conditions and environments by setting the ratio of tension to Young's modulus when the film is stretched 5% at a specific value with regard to the orientation main axial direction of the film. SOLUTION: The biaxially oriented polyester film is made of a polyester which is orientated in the longitudinal and the width direction of the longer direction of the film. The orientation main axial direction of the film is a direction which shows a high refraction index and a higher orientation, of the longitudinal and the width direction. Further, with regard to the orientation main axial direction of the film, the ratio (F5/Ym) of stress during 5% stretching (F5(GP2)) to Young's modulus (Ym(GPa)) is set to be 0.025 or more and 0.034 or less. When the F5/Ym is less than 0.025 the conservation properties and the traveling endurance of a magnetic tape is deteriorated in case the film is used for the magnetic tape, due to the irreversible dimensional change of the film under use application environments. Further when the F5/Ym is 0.034 or above, the film is no longer applicable for use as the magnetic tape.

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