High density spunbonded polyethylene polypropylene waterproof breathable film

Waterproof breathable film for wood structure (breathing paper)

This product uses different breathable formulas and production processes to produce products with different air permeability（ three hundred － 3000g/m2/24h ）It is widely used in the field of building roof waterproofing.

A Class (low-grade product): two point one It is an airtight or low breathable product. It uses a variety of breathable materials with different properties and adopts the hot melt tape casting composite process. It is suitable for use in areas with high outdoor temperature, relatively dry, and low steam humidity.

B Class (advanced products): one point six Meters, high permeability, high temperature resistance. At present, almost all domestic manufacturers use the hot melt adhesive spraying composite process to produce high breathable waterproof and breathable materials. The disadvantage is that the air permeability is relatively low, because the micropores of the middle air permeability membrane are actually blocked by hot melt adhesive. In addition, the major disadvantage is that the temperature resistance is very low, which can only withstand sixty The temperature of degrees. Because this glue is actually similar to self-adhesive, hot-melt adhesive itself is a pressure sensitive adhesive. Therefore, the waterproof breathable film produced by this process has a very short service life and can only be a fake product of the real waterproof breathable film.

Our company adopts a new process, pure hot pressing compound, which overcomes the shortcomings of glue compound used by most manufacturers in the past. There is no glue in the whole production process, so the surface is flat, no wrinkling and blistering, good compound fastness, high strength and air permeability, and it can ease aging and withstand high temperature. So it can achieve temperature resistance one hundred It is a new technology in China, and only our company can produce such products north of the Yangtze River. 　 　

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