The laminated metal plate of seamless tin and two laminated tank bodies

The laminated metal plate of seamless tin and two laminated tank bodies

  • CN 105,008,232 B
  • Filed: 12/26/2013
  • Issued: 08/13/2019
  • Est. Priority Date: 02/28/2013
  • Status: Active Grant
First Claim
Patent Images

1. a kind of laminated metal plate of seamless tin, which is characterized in that have:

  • Metal plate;

    Become the 1st polyester resin layer on the surface for being formed in the metal plate of container exterior side after container formation;

    WithThe 2nd polyester resin layer after container formation as the surface for being formed in the metal plate of container inner face side,1st polyester resin layer contains polyethylene terephthalate with 30 mass % or more and 60 mass % ratios belowThe containing ratio of ester or copolymer composition is less than the copolymerization polyethylene terephthalate of 6mol%, with 40 mass % or more and 70 matterAmount % ratio below contains poly- pair of copolymerization of the containing ratio less than 5mol% of polybutylene terephthalate (PBT) or copolymer compositionBenzene dicarboxylic acid butanediol ester, and ratio is that 0.01% or more and 3.0% ratio below contains polyolefin wax in addition,2nd polyester resin layer is that the containing ratio of copolymer composition is less than the copolymerization polyethylene terephthalate of 22mol%,For the residual degree of orientation of 1st polyester resin layer less than 30%, the residual degree of orientation of the 2nd polyester resin layer is 4%Hereinafter,The residual degree of orientation is as obtained from following step (1)~(4);

    (1) for before laminated oriented polyester resin or oriented polyester films and it is laminated after resin or film, 2 θ

    =20~X-ray diffraction intensity is measured in the range of 30 °



    (2) straight line is used to connect 2 θ

    =20 °

    , the X-ray diffraction intensity at 2 θ

    =30 ° and

    using the straight line as baseline;

    (3) height at the top nearby occurred by baseline determination in 2 θ

    =22~28 °



    It (4), will when the top of the film after being denoted as P1 by the height at the top of laminated preceding film, will be laminated is denoted as P2P2/P1 ×

    100 is as the residual degree of orientation (%).

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