Kaxite PTFE Filter Bags are fabricated from an expanded PTFE (ePTFE) membrane laminated onto a superior quality support fabric such as polypropylene, non-woven, PET or PE non-woven. The microporous ePTFE membrane traps particulate on the surface of the bag instead of allowing it to penetrate the fabric — this is what makes surface filtration different from depth filtration and what lets the bag house run at higher air flow with lower pressure drop.
Because the membrane does not absorb the dust, cleaning cycles release the dust cake more completely, giving longer bag life and lower compressed-air consumption. The membrane also protects the fabric beneath from unpredictable changes in bag house operation, so bag house engineers can reduce both capital and operational cost through a single media upgrade.
Standard non-membrane filter bags rely on a dust layer building up on the surface to do the actual filtration — this is depth filtration. The first cleaning cycle after each shutdown is inefficient, pressure drop is higher, and some particulate remains embedded in the fabric. The ePTFE membrane changes this. Because the membrane pores are much smaller than the particulate being collected, all filtration happens at the membrane surface and the dust cake releases cleanly on each pulse.
The practical effect in a bag house: lower differential pressure, higher air-to-cloth ratio, longer bag life, less compressed air consumption, and a stable operation that is not sensitive to the day-to-day changes in dust loading and gas conditions that affect standard bags.
The ePTFE membrane traps the particulate on the surface of the bag and allows more air to pass through the filter media — the fundamental benefit of surface filtration over depth filtration.
The membrane is breathable. Air passes through at high flow while particulate is captured at the surface, keeping differential pressure low across the bag house.
Uniform pore size and even distribution across the membrane surface deliver consistent collection efficiency and predictable air permeability.
The combination of a fine membrane and a permeable support fabric delivers both a high collection efficiency and stable air permeability in the same media.
The membrane resists moisture and wind, which is why the same media is used in high-humidity environments where standard fabrics would blind or degrade.
The same media is usefully applied across chemical processing, food stuff processing, electronics and mechanical industries — wherever fine dust or particles must be captured cleanly.
Kiln, mill and clinker cooler bag houses where high dust loading and abrasive particulate demand a surface-filtering media.
Coke oven and coke handling dust collection where the media must resist chemical attack and high temperature simultaneously.
Asphalt plant and bitumen handling bag houses where sticky, oil-laden dust would blind a standard fabric.
Electric arc furnace, BOF and sinter plant dust collection where fine particulate and high temperature combine.
Smelting, refining and metal finishing bag houses where chemical resistance and predictable pressure drop are essential.
Aluminium, copper and zinc processing exhaust systems where the gas chemistry varies widely from process to process.
Coal-fired power plant bag houses where the media must handle fly ash and fluctuating operating conditions for long service life.
Fire proof material production, coal handling and other dust removal applications where surface filtration delivers the lowest total cost of ownership.
Send bag dimensions, support fabric and operating conditions — our engineers will reply with pricing and lead time within 24 hours.
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