Drying of Medical Grade TPUs

Thermoplastic polyurethane (TPU) elastomers are hygroscopic in nature and tend to absorb moisture when exposed to atmospheric humidity. Failure to remove moisture from polyurethanes may also cause:

  • Reduction of the molecular weight
  • Molecular weight reduction
  • Significant loss of physical properties

In this guide you will learn how excess moisture in TPU resins can cause voids and other defects in extruded and molded parts during the extrusion or molding operation.

IF YOU DON'T DRY IT, DON'T TRY IT!

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