Patent ID: 8479924

Claim:
A filter for filtering a liquid or gaseous fluid comprising: a filter element ( 1 ) with a zigzag-folded filter medium ( 14 ; 106 ) including a raw side ( 105 ); and a clean side ( 104 ); a plurality of filter medium sections ( 120 ) joined to neighboring filter medium sections ( 120 ) along fold tips ( 102 a ) or fold bases ( 103 a ), said plurality of filter medium sections ( 120 ) extending on both said raw and clean sides from raw-side fold tips ( 102 a ) to neighboring raw-side fold bases ( 103 a ), viewed from said raw-side fold tips ( 102 a ), respectively, said plurality of filter medium sections ( 120 ) including a first bend ( 552 ) toward said raw side ( 105 ) and therebehind a second bend ( 554 ) toward said clean side ( 104 ) wherein at least a portion of said filter medium sections ( 120 ) include a plurality of adhesive lines ( 101 ) arranged thereon at said raw side ( 105 ) and/or at said clean side ( 104 ), each adhesive line ( 101 ) having a first end at said fold tip ( 102 a ) of its filter medium section ( 120 ) and an opposing second end at said fold base ( 103 a ) of its filter medium section ( 120 ) and extending between said fold tip ( 102 a ) of its filter medium section ( 120 ) and said fold base ( 103 a ) of its filter medium section ( 120 ), wherein each adhesive line ( 101 ) having at least two adhesive sections ( 122 ) applied thereon and extending thereon in same direction of said adhesive line ( 101 ) on its filter medium section ( 120 ), wherein said plurality of adhesive sections ( 122 ) are arranged at least sectionwise at a slant or perpendicular to the direction of the fold edges (F), wherein each line of adhesive ( 101 ), includes an interruption ( 107 ) in the adhesive arranged between adhesive sections lying on the same adhesive line ( 101 ).