Medical Packaging

At Porex, innovation is our foundation: our products list is only the beginning. Every day, our research scientists and engineering teams are creating new porous materials products and solutions to meet your needs and solve your specific challenges. For decades, we've helped medical device ideas come to fruition and go to market. Our medical products are developed specifically to meet the requirements of medical professionals and manufacturers alike. Have an idea? Need a custom solution? Contact us and let's get started.

P3 Technology™

Is your packaging maintaining sterility after sterilization?

As prevention of healthcare associated infection (HAI) becomes more important, hospitals are asking questions about the protection provided by medical device packaging after sterilization.

To assist device manufacturers with the prevention of HAI, Porex has developed P3 Technology. It is a new venting capability for ethylene oxide (EtO) sterilization in medical device packaging applications. The initial offering will be specialty porous PTFE membranes that are outstanding sterile barriers with high airflow. Compared to flashspun high-density polyethylene, the porous structure of PTFE is more uniform. POREX P3 Technology can help improve the EtO sterilization efficiency and maintain medical device sterility after sterilization.

Structural Comparison of Porous PTFE and Flashspun High-Density Polyethylene

These SEM images show that the porous structure of our porous PTFE is more uniform compared to flashspun high-density polyethylene. The porous structure of PTFE is an intricate network of open-celled omni-directional pores, which creates the optimal torturous path to prevent the penetration of bacteria.

Uniform Porous PTFE

% Penetration (ASTM F2638) and Gurley Hill Airflow Results

Porous PTFE has a unique combination of performance properties. The table below shows the ASTM F2638 percent penetration results as well as Gurley Hill Airflow results. The ASTM F2638 test method correlates to the percent penetration of bacteria over a range of airflow rates. Porex P3 materials provide 2–10 times better sterile barrier performance with 3–9 times better airflow compare with flashspun high-density polyethylene.

1. Pmax data from Canon Webinar, Microbial Barrier Properties of Porous Sterile Barrier Systems, John R. Bamberger from DuPont™
2. Gurley data is from DuPont™ datasheet


Porex specialty porous PTFE sheet for medical packaging    

Read what the press has been writing about our innovative technology since we launched it at the MD&M West 2013 in Anaheim, California.

Plastic News Magazine – 04/02/2013

Medical Device Technology – 02/22/2013

Sterilization Vents

POREX® Sterilization Vents serve a dual purpose: as a vent to allow pressure equalization during the sterilization process, and as a filter barrier to bacteria during subsequent storage. These reusable vents, comprised of polytetrafluoroethylene (PTFE), withstand repeated sterilization cycles as well as deliver substantial performance, convenience, and cost savings over traditional single-use paper and textile filter vent materials. The vents are also designed for single-use steam or ethylene oxide (EtO) sterilization packaging.