SOUND TRANSMITTING MEMBRANE, ELECTRONIC PART WITH SOUND TRANSMITTING MEMBRANE, AND PROCESS FOR PRODUCING CIRCUIT BOARD HAVING THE ELECTRONIC PART MOUNTED THEREON

摘要

A sound-permeable film (11) includes: a porous membrane (13) that contains polytetrafluoroethylene as its main component, allows sound to pass therethrough, and prevents an foreign object such as a water drop from passing therethrough; and a heat-resistant double-sided adhesive sheet (15) that is disposed on a part of at least one of main surfaces of the porous membrane (13).