Application of Breathable Waterproof Film

Advantages of Breathable Water Film

Breathable waterproof film is a new type of polymer waterproof material. From the production process, the technical requirements of the breathable waterproof film are much higher than those of ordinary waterproof materials; and judging from the quality, waterproof film are equipped with the functional characteristics that the other ordinary materials don’t have. Waterproof breathable film strengthens the building air tightness, water tightness and at the same time, its unique vapor permeability makes the vapor within the structure of water can be discharged quickly to avoid breeding mold to protect the value of the property.

Design of Waterproof Breathable Film
breathable film technology was first introduced from Europe and the United States, however, there is a wide variety of the production process of domestic products, all manufacturers produce the products of varying quality, and fail to form a unified quality standard. Now more popular in the international design is laminated by hot melt adhesive with transparent polypropylene fabric, polymer the vapor film, mesh ribs, polypropylene fabric. The breathable waterproof membrane material which is made by this production process has better performance of vapor permeability and waterproof than domestic products, and the material has a higher tensile strength, and improves the efficiency of the construction, and also reduces the materials in the construction process loss.

How to Identify Genuine Breathable Waterproof Film
Laboratory detection test items: a. temperature resistance; b. steam throughput (air permeability); c. Hydrostatic pressure; d. real anti-aging waterproof. The genuine breathable film is not compounded by glue, so its resistance temperature is 40-100 degree (EU CE standard, ASTM standard). Nor are produced by polyethylene or TPO Laminating, so the air permeability should be more than 1500g / sq / 24 hrs, and that is substantially airtight if produced by polyethylene or TPO Laminating. Hydrostatic pressure of thin waterproof breathable film should at least be more than 1.5 meters through hydrostatic testing, and thick waterproof breathable film should at least be more than two meters. Anti-aging is a must measure, because the PP materials is easy to aging under ultraviolet light, and counterfeit productions are made of poor recycling materials, this waterproof breathable membrane is very easy to aging degradation in the construction process. We can detect the surface simply by hands, there are obvious pressure points on both sides of the breathable waterproof membrane, which is because the production process is hot composite, they are not the point pattern of the non-woven fabric itself, but a very clear pattern of overlapping points. Tearing waterproof breathable membrane and you will find that the middle layer of polymer layer should be very soft and milky layer waterproof breathable layer and there should be pressure points above the layer by hot pressing composite layer. In addition, gently press the non-woven fabric and film, if you have the sticky feeling, then we can conclude that this is a hot melt adhesive adhesion, and then this is a fake breathable waterproof film. Because even at room temperature, three-layer material will soon layered and automatically stripped.

The article is come from:http://www.chinaphoneparts.com/index.php/led-direct-type-and-edge-lit-led-light-source.htm