公开(公告)号：US10993008B2

公开(公告)日：2021-04-27

申请号：US16075933

申请日：2016-05-24

申请人： SAATI S.P.A.

发明人： Carmine Lucignano ,  Anna Muzyczuk ,  Elisa Grimoldi ,  Marco Mietta ,  Paolo Canonico

IPC分类号： H04R1/08 ,  H04R1/02 ,  B32B7/14 ,  B32B7/04 ,  B32B5/26 ,  H04R25/00

摘要： A composite multilayer filtering construction for use in filtering applications requiring a high filtering efficiency for particles of the order of microns and a high permeability of the filtering medium, and for use as a sub-component within acoustic and electronic products, in particular microphones and speakers, comprises at least a first layer of polymeric nanoporous membrane and at least a second layer of a synthetic monofilament precision fabric, the first polymeric nanoporous membrane layer being coupled to the second precision fabric layer thereby providing an integral filtering medium adapted to prevent a passage therethrough of particles even of 1-2 μm and of pressurized liquids.