Patent ID: 8216496

Claim:
A method for producing a filter element comprising the steps of: providing a fold arrangement of folded filter material; providing a mold tool having a mold cavity, said mold cavity shaped to form a seal of a desired shape; applying a thixotropic sealing material to at least one section of circumferential end faces of said fold arrangement, laterally closing off circumferential end faces of the folds of said fold arrangement where said folds are otherwise open; solidifying said sealing material in a first shape on said at least one section said solidifying to an extent that said sealing material can be molded by said mold tool; placing said mold cavity of said molding tool onto said thixotropic sealing material; shaping said sealing material by said mold cavity into a second shape different from said first shape so that a seal of a desired shape is formed on said circumferential end faces of said fold arrangement, wherein said second shape includes at least one sealing lip protruding laterally outwardly from said sealing material closing off said circumferential end faces; removing said mold cavity from said shaped seal.