Item # kmi-1412 Polyweld™ Liquid Filter Bags

The PolyWeld bag’s welded seams eliminate completely the possibility of unfiltered liquid bypass occurring due to needle holes. You get a tighter seam, higher bag efficiencies and improved finished product yields. Additionally, the fused edges of the PolyWeld bag provide a fiber-free finish and virtually eliminate fiber migration. Since no thread is used in the FSI PolyWeld bag, the possibility of contamination from this unlikely source is also removed. FSI offers the PolyWeld liquid filter bag in two filter media – Polymicro polypropylene and our standard polypropylene felt.

In our Polymicro PolyWeld liquid filter bag, the Polymicro filter medium consists of, for all practical purposes, continuous fibers interlocked and bonded together in our unique one-step mel-blown manufacturing process. The small diameter fibers of this medium allow for finer particle removal to be achieved than is generally available and eliminate or reduce the recirculation required to achieve the desired cleanliness; resulting in even higher production efficiencies.

FSI has again demonstrated why it continues as a leader in the liquid filtration industry with its new PolyWeld liquid filter bag. For your critical liquid filtering applications, PolyWeld is the superior performer.

Conventional sewn seams contain needle holes that measure up to 1200 microns. These large “holes” allow unfiltered liquid to bypass the filter media completely. As loading in the sewn bag rises, increased pressure accelerates the leakage of contaminants through the bag’s sewn seams.

By welding each bag seam together, this exclusive FSI positive heat-sealing process eliminates all needle holes that allow impurities to escape.

FSI’s industry standard, patented, Polyloc one-piece molded top provides a more positive seal than sewn ring top bags, and features built-in handles for faster, easier installation and removal.

FILTER FABRIC PROPERTIES (Physical – Chemical – Temperature)