Patent ID: 9669341
Date: 2017-06-06
CPC Classifications: B01D,B32B

Claim:
1. A filter element comprising: a filter body of at least one layer of a flat web-shaped filter medium, the web-shaped filter medium separating a raw side from a clean side of the filter element; a hot melt system; wherein the filter body is glued together by the hot melt system; wherein the hot melt system comprises a hot melt mixture and the hot melt mixture comprises: wherein the first hot melt and the second hot melt together amount to 100% by weight of the hot melt mixture; wherein the hot melt mixture constitutes a proportion of more than 75% by weight of the hot melt system; wherein the remainder of the hot melt system is selected from the group consisting of fillers, pigments, tackiness-imparting resins, and hot melts based on a polycondensate, wherein the hot melt system includes the tackiness-imparting resins; wherein the tackiness-imparting resins includes a resin selected from the set including: a hydrogenated cycloaliphatic hydrocarbon resin or an aliphatic or alicyclic petroleum hydrocarbon resin, wherein the filter body is provided on at least one surface of the flat web-shaped filter medium with a uninterrupted and sealing adhesive bead of the hot melt system, wherein the adhesive bead glues the filter body in such a way that the raw side and the clean side of the filter element are separated seal-tightly from each other.