FyreWrap® LiB Papers

FyreWrap® LiB (Lithium-ion Battery) Papers from Unifrax are a range of high-temperature, lightweight insulating materials designed to prevent thermal runaway propagation in lithium-ion battery applications. Building on our thermal management expertise and manufacturing excellence, combined with extensive experience in aerospace, automotive and fire protection applications, Unifrax offers customised solutions for lithium-ion thermal runaway propagation prevention.


  • Fire-resistant, flame barrier
  • Electrically insulating
  • Low thermal conductivity / thermal insulating
  • Suitable for temperatures up to 1430 °C
  • Uniform, lightweight flexible sheets
  • Easy to wrap, shape or cut
  • Excellent chemical stability
  • Exceptionally resistant to thermal shock
  • Non-woven compressible fibre matrix


  • Thermal runaway propagation prevention
  • Short-circuit prevention and electrical protection
  • Cascading fire prevention
  • Thermal isolation and containment


  • Cells (external to cell)
  • Battery modules
  • Battery packs
  • Packaging for transportation

To learn more about FyreWrap LiB Performance materials or to discuss your application, please contact us at: +1 716 768 6305.


Safety Data Sheets

FyreWrap® LiB Papers

Product Information Sheet

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