Pyralux® HXI


Pyralux® HXI black coverlay

DuPont™ Pyralux® HXI is DuPont™ Kapton® black polyimide film coated with epoxy ideal for products where uniform matte black appearance is desired. It offers thinner construction than Pyralux® HXC, but similar mechanical and process properties.

It is coated on one side with a proprietary B-staged modified epoxy adhesive. The Pyralux® HXI coverlay is used to encapsulate etched details in flexible and rigid-flex multilayer constructions for environmental and electrical insulation.


  • Uniform matte black appearance
  • High bond strength
  • High thermal resistance
  • Enable high yield in processing
  • Halogen free


  • HXI0910: 9um black polyimide film and 10um epoxy adhesive


  • UL-94 VTM-0 flammability rating

Technical Data Sheets

Pyralux® HXI black coverlay


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