Dexmet specializes in offering expanded fluoropolymers and thermoplastic materials that are often difficult to obtain in either and extruded or woven product.
Specialized fluoropolymers include:
PTFE, PFA, FEP, ECTFE
High performance thermoplastics include:
Particulate passage is controlled by the opening size or “pore” diameter of the media and is designated by a Micron rating. The opening configuration (pore) might be diamond-shaped (expanded), square (woven wire), or round (perforated). Designate the opening according to the particle size required to be separated out of the flow path.
Flow backpressure results from the “percent open area” and the degree of particulate build-up on the media surface. Choose a material that will more than withstand the full pressure drop across a blocked surface area.
Ultimate strength is controlled by material selection, thickness, percent open area and pore geometry. Multiple layers of filter material with varied openings can improve flow, purification, and withstant higher backpressures.
Filters (or pre-filters) that are designed to remove large particulates (over 0.5 mm in diameter) must be made to withstand impact stresses as well as fluid pressure. “Open” (expanded, perforated or woven wire) metal foils are frequently used for this function because they can be easily formed for the specific application.
Stainless Steel, Aluminum, Nickel Alloys, & Carbon Steel (FE).
Dexmet has the capability to expand all ductile metals.
For information on the advantages and characteristics of MicroGrid primary filtration media and internal core support materials download this free data sheet.