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DSM in Medical

Dyneema Purity® membrane

Dyneema Purity® membrane serves as an alternative to currently used ePTFE films (polytetrafluoroethylene) to improve the design of cardiovascular devices such as peripheral stent grafts.
3 Dyneema Purity® product samples

A biocompatible and inert medical grade membrane

Dyneema Purity® membrane is a medical grade membrane, that is biocompatible and inert, and can be processed at lower temperatures, resulting in easier handling and lower cost tooling requirements. It has a higher ratio of strength versus volume compared to ePTFE, which enables medical device companies to manufacture medical devices with smaller profiles, enabling treatment of patients with minimal invasive surgery.

Creating laminated structures

In addition, the membrane enables creation of a laminated structure; the porosity resulting from this allows the membrane to accept coatings and drugs. Furthermore, the membrane can be combined with other materials such as nylon, PET, TPU and UHMWPE fiber, such as DSM’s Dyneema Purity® fiber itself.


  • Smaller medical device profiles possible than ePTFE, because of higher strength versus volume ratio
  • Lower deployment forces
  • Biocompatible and chemically inert material
  • Porous material accepts surface coatings or drugs
  • Ability to create laminated structure
  • Easy to handle and convert at lower temperature


  • (Peripheral) stent grafts