ePTFE waterproof vent membrane is a polymer material film, used for sealing shell balance pressure, dustproof and waterproof, sealing exhaust, air pressure balance and so on. In the fields of consumer electronics and appliances, medical devices, environmental protection packaging, electric vehicle parts, solar photovoltaic and other fields.  Today we will talk with you about the common problems of eptfe waterproof vent membrane:

• What is the role of eptfe waterproof vent membrane?

eptfe waterproof vent membrane is made of PTFE resin by a special process of multi-microporous film, its aperture is smaller than the diameter of water molecules, larger than the diameter of air molecules, so it can be waterproof and breathable. At the same time, it also has the characteristics of dustproof and waterproof, ventilation and pressure relief, sealed exhaust, pressure balance, heat dissipation and cooling, moisture proof and corrosion prevention, high and low temperature resistance. Is a shell sealing waterproof and balance the internal and external pressure of the polymer material, in China, Microvent has developed a multi-field application of eptfe waterproof vent membrane.

• What is the protection level of eptfe waterproof vent membrane?

As eptfe waterproof and breathable film is a polymer waterproof material, for waterproof performance, IP67/IP68/IP69k can be achieved at present. eptfe waterproof and breathable film developed by Microvent can withstand water pressure of more than 200Kpa, and IP67 waterproof is generally immersed in a water depth of 1 meter for 30 minutes. For 200Kpa water pressure is equivalent to 20 meters deep immersion!

• What is the Air Permeability standard of eptfe waterproof vent membrane?

At present, there is no standard for the permeability of eptfe waterproof breathable membrane, and in the industry, it is generally tested by how much breathable per square centimeter per minute under 7kpa pressure. Air permeability also refers to the ventilation volume, air circulation, eptfe waterproof breathable film breathable capacity of 100ml~120000ml can be customized.

• How high temperature can eptfe waterproof vent membr withstand ?

ePTFE material itself is resistant to high and low temperatures, the high temperature can reach more than 260 degrees, and the high temperature resistance of the porous eptfe waterproof breathable film can also reach more than 200 degrees.