The PE breathable film production line, literally, should also know that it is made of PE (i.e. polyolefin resin) as the main material, followed by the addition of some fine special fillers, and extruded into shape using the casting cold roll molding method. After longitudinal stretching and treatment, it has a unique microporous structure.

So these very high-density micropores with special structures distributed around the surface of the PE breathable film can prevent the leakage of liquid water and allow some gas molecules such as water vapor to pass through smoothly. The raw materials for this type of film can mainly be composed of PE, HDPE, or PP, and can also be inorganic fillers.

We can measure it at a relative humidity of around 37 ℃. The water vapor permeability of the PE breathable film production line can reach around 500-5000g/m2 (24h), and its water column with water pressure resistance can generally reach around 60-200cm. So in normal circumstances, the temperature of PE breathable film is 1-1.5 ℃ lower than that of non breathable film, which makes it very soft to touch and enhances its adsorption force.