POREFLON is the trade name for a porous material produced by Sumitomo Electric from 100% polytetrafluoroethylene (PTFE). We have commercialized the product to meet our customers' needs, with manufacturable pore sizes covering a wide range from 0.03 to 10 µm (microns).
POREFLON has the following four principal features.
First, PTFE offers excellent chemical resistance. POREFLON is chemically stable and does not degrade when exposed to virtually all chemicals.
Second, POREFLON is extremely tough and thus has a long service life.
Third, POREFLON is highly permeable to water thanks to its high porosity. The Illustration of POREFLON shows the microscopic structure of our POREFLON products. The white area is made of PTFE fibers. The black parts represent voids, or pores. The ratio of pore spaces to the total volume is referred to as the porosity. Without strength limitations and other restrictions, the porosity of POREFLON can be increased up to around 90%. A higher porosity implies less resistance to the passage of water and translates into higher water permeability.
Lastly, POREFLON has a high resistance to heat. This is also another of the excellent features of PTFE, the material used for POREFLON. In membrane filtration applications, POREFLON Membrane Modules will function up to 200ºC