ePTFE

ePTFE membrane has waterproof, breathable, and sound-permeable properties. The water-pressure-resistant sound-permeable membrane products developed by the company using these characteristics have begun to be used in consumer electronics industries such as smart wearable devices and smartphones to seal gaps and slots on devices. , so as to achieve IP67, IP68 waterproof and dustproof level. The principle is that when the sound wave touches one side of the ePTFE membrane, the membrane will vibrate, converting the energy carried by the sound wave into physical vibration, and the physical vibration will cause the air to vibrate on the other side of the membrane, generating sound waves of similar frequency, thus The effect of achieving a high level of sound transmission. Previously, on a global scale, the main suppliers of water pressure-resistant sound-permeable membranes were American Gore and Nippon Denko