Molded filter element contains thermally bonded staple fibers and electrically-charged microfibers

摘要

A filter element that comprises a porous molded web 10' that contains thermally bonded staple fibers 12 and non-thermally bonded electrically charged microfibers 14. The molded web is retained in its molded configuration, at least in part, by bonds between the staple fibers 12 at points of fiber intersection 13. The web may be molded, for example, into the shape of filtering face mask 16.