Polyimide Film for FCCL Substrate

Copper clad amber polyimide film Copper clad amber polyimide film is a kind of biaxial tension PI film. Its thickness tolerance is small, and coefficient of thermal expansion(CTE) is low. This film is widely used for substrate of FCCL. character: Small thickness tolerance Low CTE Halogen-free,...
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    BH Copper clad amber polyimide film is a kind of biaxial tension PI film. Its thickness tolerance is small, and coefficient of thermal expansion(CTE) is low. This film is widely used for substrate of FCCL.


    Performance:

    Small thickness tolerance

    Low CTE

    High temperature resistant 

    Good insulation 
    Corrosion resistant
    Flame retarding

    Halogen-free, environment-friendly


    Application:

    FCCL basement material


    Available thickness: 12.5um, 25um, 50um


    No

    Item

     

    Unit

    Index Value

    12.5

    25

    50


    1

    Density

    kg/m3

    1420±20

    2

    Tensile strength

    MD

    MPa

    ≥137

    ≥135


    TD

    ≥137

    135


    3

    Elongation

    MD&TD

    %

    ≥40

    4

    Shrinkage rate

    200

    %

    ≤0.4

    5

    Electrical strength48-62HZ

    kV/mm

    ≥160

    6

    Volume resistivity

    200

    Ω. cm

    ≥1.0×1015

    7

    Surface resistivity200

    Ω

    ≥1.0×1013

    8

    Relative dielectric constant


    ≤4

    9

    Dielectric loss factor48-62HZ


    ≤0.012

    Process:

    After completion of formula,the materials begin to polycondensation,flowing into resin storage,casted by casting machine,scrolling into imine furnace for complete drying,tension and imidization,and beginning to wind. After winding, start to strimming side or slitted as clients' demanding. Then the coil must be during corona treated and post-processed for good performance.


    Packing:

    1. Packing in rolls(cardbord core or plastic core ) with bubble paper outside, plastic end cap,  put into carton, then fasten with belt.
    2. Carton will be marked with product name, specification, quantity information .

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