GORE™ High Durability Filter Bags blend chemically inert expanded polytetrafluoroethylene (ePTFE) with rugged polyimide fibers. This hybrid offers significant performance increases over aramid felts both in mechanical endurance and chemical resistance. It provides product recovery and emissions control unequalled by nonmembrane filters.

The polyimide/ePTFE blend provides better humidity and chemical protection compared to aramid and polyphenylensulfide (PPS) felts. Additionally, its temperature range goes all the way to 260 °C (500 °F). This capability means much better protection against process upsets due to temperature fluctuations. An additional benefit of the blend is its higher resistance to acids compared to aramid fibers. The enhanced performance of the polyimide/ePTFE backer is very effective for applications requiring more chemical and thermal endurance than traditional felts made with aramid or PPS fibers.

A woven ePTFE supporting scrim further improves durability and breaking strength. By bracing the filter in the face of repeated cleaning pulses, it provides greater dimensional stability and reduces fatigue and wear.

GORE™ High Durability Filter Bags with blended backer offers greater price/performance value than their aramid or PPS counterparts. Their higher temperature range maintains the integrity of the felt structure, minimizing brittleness and membrane cracking. They last longer even under the damaging effects of hydrolysis and acids. That means fewer bag changeouts and greater savings over time – all of which have a positive impact on your company’s profit.

The unique structure of the new GORE™ membrane allows it to outlast standard membranes.