I hope this message finds you well.

I am reaching out on behalf of our team regarding a new project focused on the development of single-use biopharma bags. As part of our material selection process, we are currently seeking a suitable multilayer film that meets the critical requirements of our application.

Based on our research and benchmarking against products from reputable manufacturers, we believe a film with the following structure would be appropriate:

Preferred structure: PE / tie / EVOH / tie / PE
Alternative acceptable structure: PA / tie / EVOH / tie / PE
Approximate thickness: 400 microns
Width: Approximately 50 cm

The most critical requirements for us include:

Excellent film integrity

Sterilizability (via gamma or X-ray)

Mechanical strength to support bioprocess media

Biocompatibility and cleanliness, particularly in terms of extractables, leachables, and suitability for contact with biopharmaceutical products


We would appreciate it if you could let us know whether you are able to provide a film with these specifications. If not, we would be highly interested in any alternative solutions you might recommend that fulfill the functional requirements of our application.

We look forward to your valuable insights and thank you in advance for your time and support.