Patent ID: 8226786
Filing Date: 2012-07-24
Classification: B01D,B32B,Y10S,Y10T

Abstract:
1. A method of preparing a filter construction for use in an air cleaner; the method comprising steps of: (a) providing a filter media construction comprising a fluted filter media sheet secured to a facing sheet of filter media with a first seal therebetween against a first side of the facing sheet; (b) forming a generally circular coiled configuration by coiling the filter media combination at least 10 times around with the facing sheet directed to the outside of the coiled configuration and with a sealant strip, during the coiling, positioned between the fluted filter media sheet and a second side of the facing sheet; (c) distorting the generally circular coiled configuration having a central aperture to a media construction having a shape with two generally parallel sides joined at their ends by curved portions; (d) positioning a housing seal on the media construction.