A filter pack is formed of a pleated filter section and a top edge band and a bottom edge band that form a frame. The filter section and the frame are formed of a nonwoven polymer material, preferably a polyester material. The filter section is retained in the frame by an adhesive, preferably also a...http://www.google.es/patents/US6846342?utm_source=gb-gplus-sharePatente US6846342 - Filter pack having nonwoven filter media and nonwoven edge banding frame
Filter pack having nonwoven filter media and nonwoven edge banding frame
