Advance enables high performance filtration in harsh environments

Precision expanded metals, foils and polymers manufacturer Dexmet has used a PEEK polymer film to enable high performance filtration in harsh environments.

The APTIV film made with VICTREX PEEK polymer will be used in critical applications requiring high temperature stability to filter caustic gases or fluids, such as in the semiconductor, chemical processing, and petroleum and gas industries.

These have traditionally used polymers such as polytetrafluoroethylene (PTFE), perfluoroalkoxy copolymer (PFA), and ethylene chlorotrifluoroethylene copolymer (ECTFE). Though these materials provide excellent temperature and chemical resistance, none match the mechanical strength provided by the expanded APTIV films.

Dexmet utilises a precision expansion process which combines a 'slit and stretch' function to produce the high performance mesh product. Tim Herr, global films business leader, Victrex Polymer Solutions said: "What makes this unique to Dexmet is our ability to produce an expanded product on very thin materials with very small openings at wide widths. There are no other expanders in the world that can expand thin materials, especially polymer films under 0.127mm with opening sizes down to 25 microns."

Justin Cunningham

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