What are the silver coatings for umbrellas?
Sunshade can not be used as an umbrella, because the umbrella surface coated with a layer of silver glue, to prevent ultraviolet radiation reflection and reflection, if often rain "invasion", an umbrella on the surface of these protective material susceptible to acid and alkaline substances in the influence of rain once aging such protective substances fall off, sunshade the protective effect has basically disappeared, black is the same.
Now a lot of that kind of polyester canvas, shading effect is good, relatively thick fabric, polyester tarpaulin is waterproof glue to do, for a long time, water is not so good, but his life is good, not easy to aging, with 3-4 years there is no problem. To sum up, there is no one hundred percent watertight cloth, it is impossible, and each product has its own advantages, I hope I can help you.
Coated silver is mainly for UV protection, and there is one function is waterproof, but in fact this cloth is not good, the service life is too low.
