1results about How to "Prevent characteristic deterioration" patented technology

This invention discloses a waterproof sound-transmitting sheet. The waterproof sound-transmitting sheet includes: a waterproof sound-transmitting layer having a waterproof function and configured to transmit sound; a first adhesive layer attached to a first surface of the waterproof sound-transmitting layer; and a second adhesive layer attached to a second surface of the waterproof sound-transmitting layer located on the opposite side of the first surface, wherein the waterproof sound-transmitting layer includes a non-porous layer without pores and a porous layer laminated on the non-porous layer and containing pores.