AIREX®, BALTEK® - Structural foam and balsa lightweight cores that meet the fire safety requirements for rail applications

Rolling stock is built to last decades. This means innumerable trips with numerous acceleration and deceleration processes daily. Consistent lightweight construction can be a significant contribution in this case: to reduce energy consumption on the one hand and to reduce railbed wear on the other hand.

Lightweight construction with simultaneous shock and bending resistance, efficient noise control, good thermal insulation, and maximum fire inhibition: These are the decisive criteria for the development of public transportation - from high-speed trains to light railways.

Together with our partners we develop innovative composite solutions with our core materials AIREX®, BALTEK®, which ensure passenger safety as well as weight reduction, fire resistance, stability, and durability as highest priorities.

The unique combination of material properties enables us to be present in various markets:

  • Trolleys
  • Subways (metros)
  • Regional trains
  • Intercity trains
  • High-speed trains
  • People movers
  • Significant weight savings potential
  • Lower total operating costs
  • Excellent aging properties and long-term stability
  • Excellent fire resistance (NF F 16-101, DIN 5510, EN 45545, FAR 25.583)
  • Good heat insulation
  • Easy processing
  • Integration of functional groups (e.g. heating)
  • Floors
  • Partition walls
  • Doors
  • Lavatory units
  • Cover panels
  • Driver cabins
  • Skirts and covers




Floor elements made of AIREX® T90: fire proof, easily processible, weight-saving, insulating, sound-absorbing, and cost-efficient. This makes railway travel safe and convenient, e.g. in the new FLIRT Intercity by Stadler.

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