Ring filter

摘要

Ring filter, with sealed covering plates or film at the end sides, has a mouldable sealing material (2), and extends radially inwards and/or outwartds, in a ring, at least at the end side of the filter material (1). Filter (1) and/or sealing material (2) are of a fusible material, to be welded together. Sealing material (2) is pref. a fusible non-woven. Filter material (1) has a support ring (4) at the end sides, without projection and inserted axially, for the sealing (2) to project radially in a ring from it. As the filter (1) and sealing (2) are welded together, the support ring (4) is welded into place at the same time. Ring disc, of mouldable material, can be placed over the sealing at least at one end side of the filter, projecting radially inwards and/or outwards, using a fusible material to be welded to the sealing, pref. of a fusible non-woven. Filter has an axially inserted support ring, at the end sides, which is welded into place with the filter and seal.