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PTFE Membranes

Donaldson is the leading worldwide manufacturer of Tetratex® brand expanded polytetrafluoroethylene (PTFE) membrane roll goods. Our high performance laminates supply superior dust cake release, low pressure drop, higher air flow, and high efficiency, making Tetratex® an excellent choice for filtration and other applications. For over 20 years Donaldson membranes have been solving tough problems in a variety of markets including Industrial Filtration, Pharmaceutical, Microfiltration, Fuel Cell, Hydrophobic/Oleophobic Venting, Medical and more. If you need a high performance membrane to solve your problem, we have the answer: Tetratex®.

Nanofibers

Donaldson is developing nanofiber products and nanofiber filter media for new applications where sub-micron fiber diameters, high filtration efficiency, high surface area and other unique material properties add value. Donaldson uses its patented and patent-pending nanofiber filter media in Ultra-Web® filters for dust collection, Spider-Web® filters for gas turbine filtration and Endurance® air filters for heavy-duty engines for years. Now, our proprietary nanofiber technology is available for new applications so customers in all end markets can benefit from the technology.

To view datasheets on any of the products listed below please visit our data library.

Nanofiber Filter Media

Donaldson is developing nanofiber filter media for new air and liquid filtration applications. Donaldson has used nanofibers in several industrial filtration applications for the last 20 years.

Nanofibers in Non-wovens and Fabrics

Donaldson nanofiber webs are the lightest weight non-woven webs made. Imagine a web only 1 micron thick! We currently manufacture tens of thousands of square meters every day for air filtration applications.

Electrospun Nanofiber Technology

Nanofibers are an exciting new class of material for applications ranging from medical and drug delivery to rheology modification. Donaldson has extensive nanofiber research, pilot and production electrospinning capabilities to support co-development projects for new applications.