waterproof (e-PTFE)film adopts expanded polytetratuoroethylene to achieve uniform stretching and three-dimensional mesh
structure film.
The diameter of the micropores is 0.1-10um,the molecules of air and water vapor are 0.0004um, and the pore diameter of the (e-PTFE) membrane is 250-25000 times larger than the diameter of the gas, so the gas can pass through, while the diameter of capllaryrain is 500 pm, which is hundreds of times larger than the diameter of the micropores of the membrane.These micropores, which are only one twenty-thousandth the size of a drop of water, prevent water, dirt and debris from entering (e-PTFE) the membrane. By allowing air to enter and exit the closed enclosure freely,equalizing pressure and preventing water,corrosive liquids, salts and particles from entering the enclosure and damaging the interior of the sealing equipment, our sealing
equipment becomes more reliable, safer and more durable.
waterproof vapor barrier film is generally used as a vapor barrier and is used in the lower layer of the thermal insulation layer toprevent moisture and vapor, prevent indoor moisture from penetrating into the thermal insulation layer, and affect the service lfe of thethermmal insulation layer.
waterproof air barrier membrane and waterproof breathable membrane are generally used for metal roof waterproof, the difference is.1. The waterproof and breathable membrane can be said to be an upgraded version of the air barrier membrane, which can not onlyeffectively waterproof, but also release water vapor to prevent metal from rusting.2. The waterproof air barrier film has a very g0od waterproof effect, but the water vapor in the building structure cannot evaporate.and the metal roof will definitely rust in the long run.