Pyralux® TK


Pyralux® TK Copper Clad Laminate and Bonding Film System

DuPont™ Pyralux® TK is a fluoropolymer/polyimide composite double sided copper clad laminate and bondply ideal for high speed digital and high frequency flexible circuit applications.

Specifically formulated with FEP fluoropolymer film and DuPont™ Kapton® polyimide film for high speed digital and high frequency flexible circuit applications. Its use in flex interconnect applications provide exceptional electrical performance.

Copper Clad Features:

  • Certified to IPC 4203A/13
  • Available in dielectric thicknesses of 2, 3, and 4 mils
  • Available in copper thicknesses of 12, 18 and 35 microns
  • Available in copper types RA, ED


DuPont™ Pyralux® TK bondply composites are constructed of DuPont™ Kapton® polyimide film coated on both sides with a fluoropolymer adhesive. Bondply is used to encapsulate two etched details for environmental protection and electrical insulation. Using bondply can eliminate a layer of Kapton® and a layer of adhesive in low count multilayer constructions.

Bondply Features:

  • No tack for ease of registration
  • Excellent encapsulation ability
  • Available in thicknesses of 3, 4, and 5.5 mils
  • Certified to IPC 4203A/5

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