The use of waterproof and sound-permeable membranes for phones and watches
PTFE is called polytetrafluoroethylene, which has excellent chemical stability, can withstand corrosion from strong acids and alkalis, and has a wide temperature tolerance. Phone and watch waterproof and sound-permeable membrane is also one of its derivatives.
Waterproofing has always been a problem for consumer electronic devices with call functions. Because of the call function, many components such as speakers, MICs and SIM cards cannot be sealed. And it cannot be like an industrial mobile phone, which uses a lot of soft rubber and steel plates for its appearance. It needs to maintain the same appearance as an ordinary non-waterproof phone, which is normal and beautiful.
Waterproof sound-permeable membrane for phones and watchesThe working principle can be divided into two types: microporous and hydrophilic groups. The waterproof and breathable membrane uses the former. Since the minimum diameter of water droplets is about 20 microns, while the diameter of water vapor molecules is only about 0.0004 microns. There is a huge difference between the two diameters. Water vapor can pass through the microporous membrane through the principle of diffusion, while liquid water or water droplets cannot pass through due to the surface tension of liquid water or water droplets. , which prevents water penetration and makes the breathable membrane waterproof.
The waterproof sound-permeable membrane for phones and watches produced by the manufacturer uses imported raw materials, has a full set of advanced production equipment, an advanced clean room and an independent composite branch. The cutting workshop ensures the production quality of PTFE membrane; it uses production testing instruments imported from the United States to test the quality of PTFE membrane, and has passed international SGS testing and certification, as well as ISI testing and certification. Interested parties can enter the store and contact us.
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