Polyethylene waterproof breathable film

The waterproof structure of polyethylene polypropylene fiber composite waterproof membrane system can meet the requirements of waterproof engineering design for waterproof system: one ）Structural stability: this is achieved by the direct solidification and bonding of the network structure on the surface of the coiled material and the cement structure. 　　 two ）Water impermeability: this is achieved by the stable bonding interface structure of the coiled material polyethylene core layer and the transverse water impermeability. 　　 three ）Resistance to atmospheric aging: this is achieved by the good soothing reaction and ozone resistance of polyethylene and polypropylene, as well as the cement structure that is stably combined with coiled materials and completely blocks ultraviolet light. 　　 four ）Mechanical protection: it depends on the surface reinforcement layer and the cement material protective layer with stable performance. 　　 five ）Ultraviolet protection: it is undertaken by the protective layer of cement material, and the coiled material after construction is completely isolated from ultraviolet light. 　　 six ）Construction feasibility: it is realized by the network void structure provided by the surface reinforcement layer of the coiled material and the direct solidification and bonding of the cement material. In the waterproof system, the bonding and paving of waterproof coiled materials with the main structure of the building and the bonding with the protective layer are made of cement materials. Therefore, the structural stability is good and will not weaken with time. At the same time, the construction does not require the low water content of the main building. 　　 seven ）Environmental protection feasibility: the product is harmless and pure, and does not pollute the environment during construction. 　　 eight ）Seepage block in case of accidental damage of waterproof layer: the application system of polyethylene polypropylene composite waterproof membrane products focuses on the overall waterproof performance of the structure, but does not emphasize the individual water penetration resistance of the waterproof membrane body material. In the whole waterproof system, the layer upon layer structure plays a blocking role in water leakage; When the main material of coiled material is accidentally damaged, the total seepage flow at the leakage point of the main material of coiled material shall be controlled to prevent it from forming open water flow, so as to achieve the overall effect of engineering waterproofing.