• A tight pore structure resists penetration of particulate.
• Rigid physical properties holds a pleat without the need for supporting backing material.

Spunbond media v. traditional needle felt

Tight calendering of spunbond media fibers resists particulate penetration into the media. Spunbond media is manufactured by layering fine denier fibers from multiple spinning heads onto a moving mat. This depth of fibers is then calendered under heat and pressure. Spunbond media can withstand temperatures up to 275°F (135°C).

Side view of spunbond polyester magnified 50 times.	Side view of standard polyester felt magnified 50 times.
Face view of spunbond polyester magnified 100 times.	Face view of standard polyester felt magnified 100 times.

The media is pleated and molded into a filter element that can increase filtration surface area 2 to 3 times compared to conventional filter bags. BHA PulsePleat elements can dramatically increase filtration efficiency while operating at significantly lower differential pressures.