Method for sealing a filter element in a filter cartridge and filter devices produced therefrom

摘要

The present invention provides a filter cartridge or filter unit (11) produced by a thermoplastic overmolding process that enables to use a single mold for overmolding a variety of different sized filter elements (12) or membranes and a method for sealing or hermetically sealing said filter element (12) in said filter unit (11) or cartridge. The proposed method produces a more robust filter unit (11) or cartridge than those provided by the prior art. The filter unit (11) is made by integrally sealing the thermoplastic supports (14,16) through overmolding. The connection is being achieved by the use of an overmold flow passage (20) in one of the thermoplastic supports (14,16).