Pyralux® FR

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Pyralux® FR flame retardant acrylic based coverlay


Pyralux® FR flame retardant acrylic-based coverlay features Kapton® polyimide film, coated on one side with a proprietary flame-retardant B-staged modified acrylic adhesive. This coverlay can be used to encapsulate etched details in flexible and rigid-flex multilayer constructions for environmental protection and electrical insulation.

Features & Benefits

  • Flame retardant modified acrylic adhesive composition
  • Excellent bond strength affords high reliability
  • Able to withstand multiple lamination cycles
  • No refrigeration required for storage

Pyralux® FR Technical Documents

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    Pyralux® FR Product Series Properties

    Property Group Property Name Value Test Method
    Dielectric Dielectric Constant (Dk) 10GHz 3.1 ASTM D2520 / IPC-TM-650 2.5.5.3
    Dielectric Constant (Dk) 1MHz 3.6 ASTM D2520 / IPC-TM-650 2.5.5.3
    Loss Tangent (Df) 10GHz 0.015 ASTM D2520 / IPC-TM-650 2.5.5.3
    Loss Tangent (Df) 1MHz 0.02 ASTM D2520 / IPC-TM-650 2.5.5.3
    Electrical / Insulation Surface Resistance (Ω) >1x 10^13 IPC-TM-650 2.5.17
    Volume Resistivity (Ω・cm) >1x10^15 IPC-TM-650 2.5.17
    Mechanical Elongation at Break (%)   IPC-TM-650 2.4.19
    Tensile Modulus (Gpa)   IPC-TM-650 2.4.19

    Pyralux® FR Product Properties

    Property Name Form Factor Package Adhesive Type Coverlay Color Dielectric Thickness (μm) Dielectric Thickness (mil) Adhesive Thickness (μm) Adhesive Thickness (mil)
    FR7013 Coverlay Roll Acrylic Amber 13.0 0.50 25.0 1.0
    FR0110 Coverlay Roll Acrylic Amber 25.0 1.00 25.0 1.0
    FR0120 Coverlay Roll Acrylic Amber 51.0 2.00 25.0 1.0
    FR0130 Coverlay Roll Acrylic Amber 76.0 3.00 25.0 1.0
    FR0150 Coverlay Roll Acrylic Amber 127.0 5.00 25.0 1.0
    FR7082 Coverlay Roll Acrylic Amber 13.0 0.50 51.0 2.0
    FR0210 Coverlay Roll Acrylic Amber 25.0 1.00 51.0 2.0
    FR0220 Coverlay Roll Acrylic Amber 51.0 2.00 51.0 2.0
    FR0230 Coverlay Roll Acrylic Amber 76.0 3.00 51.0 2.0
    FR0250 Coverlay Roll Acrylic Amber 127.0 5.00 51.0 2.0
    FR0310 Coverlay Roll Acrylic Amber 25.0 1.00 76.0 3.0
    FR7001 Coverlay Roll Acrylic Amber 13.0 0.50 13.0 0.5
    FR1510 Coverlay Roll Acrylic Amber 25.0 1.00 13.0 0.5
    FR7332 Coverlay Roll Acrylic Amber 13.0 0.50 19.0 0.75