Apparatus and method for regulating filter media pack pleat spacing

摘要

Apparatus and method related to a cartridge filter having self-regulated pleat spacing. An elastic adhesive bead is used on an outer surface of a cylindrically formed pleated filter media to maintain pleat spacing without damaging the pleats or the filter media. In this way, a cylindrical pleated filter media may be formed from a planar filter media without the need for manually spacing the pleats during or after formation into a cylinder.

主权项

1. A cartridge filter with self-regulated pleat spacing, comprising:
a cylindrical pleated filter media having a plurality of pleats; said plurality of pleats extending in a longitudinal direction, said pleats arranged side by side in a transverse direction, said plurality of pleats having a series of alternating pleat tips and pleat valleys in said transverse direction; a cylindrical inner screen; said pleated filter media having an inner filter surface and an outer filter surface, said inner filter surface adjacent said inner screen; at least one first adhesive bead applied to said inner filter surface, said first adhesive bead traversing a plurality of said pleat tips and said pleat valleys; at least one second adhesive bead applied to said outer filter surface, said at least one second adhesive bead at least partially encircling said pleated filter media; and said at least one second adhesive bead having greater elasticity than said at least one first adhesive bead, said at least one second adhesive bead maintaining pleat spacing of said outer surface when said cylindrical pleated filter media is transformed from a planar form to said cylindrical pleated filter media.