Infinergy: The first expanded TPU

Infinergy™ is the world’s first expanded thermoplastic polyurethane (E-TPU). The closed-cell, elastic particle foam combines the properties of TPU with the advantages of foams.

Being a particle foam, Infinergy has a low bulk weight, with a density of about 110 kilograms per cubic meter, and, after processing on standard molding machines, a molded part weight of between 200 and 320 kilogram per cubic meter.


That puts the new foam somewhere between expanded polystyrene (EPS) or polypropylene (EPP), which are generally lighter, and the heavier elastomeric polyurethane foams.


Thanks to its closed-cell structure, Infinergy also absorbs little water, less than two percent by volume in 24 hours. Like the TPU on which it is based, it is also characterized by very high breaking elongation (between 100 and 150 percent depending on the density), tensile strength (approx. 600 kilopascals) and abrasion resistance, combined with good chemical resistance.


One of the main features of Infinergy is its excellent recovery behavior which is due partly to the closed-cell structure of the foam. This makes it the most elastic particle foam currently available on the market.

Key Features

  • low density
  • high elasticity
  • outstanding resilience
  • high abrasion resistance
  • high tensile strength
  • good chemical resistance
  • good long-term durability in a wide temperature range

All about Infinergy

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As stretchy as rubber but light and springy


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