When pasting waterproof and breathable film, bubbles are sometimes found on the surface, and bubbles become larger and larger, forming shadows. Shadows will affect the aesthetics of the object and make it inconvenient to use. How are shadows created? The first is temperature. Due to the action of air bubbles, it is supported by air bubbles at 80℃, which means that the protective film begins to crack slowly at high temperature. If the adhesive of waterproof and breathable film is not good in heat resistance or binding force, it is easy to appear residual glue or shadow around its bubbles. Usually, where shadows appear is where bubbles form. Another reason is that this usually happens with waterproof, breathable membranes that contain emulsifiers. When the emulsifier moves, it creates a shadow. The surfactant will act as an external plasticizer to make the film soft and elastic. If the plasticizer is evenly distributed during the coating process, the effect is better. However, due to the surface activity of surfactants, molecules migrate from the bulk phase to surface aggregation and tend to aggregate at the membrane-air interface, thus forming shadows. The longer the time goes by, the larger the contact surface between the ordinary bubbles and the air, the higher the probability of forming a shadow. Therefore, please try to prevent the formation of small bubbles, use good quality waterproof breathable film, so as to delay the appearance of dark shadows.

Waterproof breathable membrane is mainly used for various building waterproof occasions, such as building walls, basements, toilets, etc., can also be used for some public waterproof construction, such as swimming pools, tunnels, reservoirs, etc. So how do we choose a good waterproof breathable film? Analyze the following three purchase points for you: 1. You can go to the manufacturer for on-site inspection. This link is very necessary, because the production process of this material seems very simple, but in fact, it needs a lot of conditions to do well. Check the modified asphalt waterproof film manufacturers should pay attention to several key points, the technical status of equipment, raw materials (mainly to see whether asphalt recycling, whether there is SBS, tire base cloth), laboratory. 2. In the selection, you can consult the sales staff of several manufacturers to verify. It is suggested to take the samples provided by them to the warehouse of his unit to check whether they are consistent. 3. Don't worry too much about price. If there is a financial problem, there is no need to blindly ask for waterproof breathable membrane. You can choose materials directly from some good manufacturers, the price may be lower.

In the storage and transportation of chemicals, containers are needed. In order to prevent chemical leakage, people always think that as long as the container is well sealed, the chemical can be guaranteed safety. In fact, some chemicals, such as strong oxidants, are very volatile in natural conditions and break down into gases to release heat, which can be very dangerous if this occurs in a closed environment. Cracking of storage and transportation containers may result in chemical leakage. Serious, may cause chemical explosion, easy to cause casualties and property losses. Therefore, when some specific chemicals are stored and transported in containers, they must not be "sealed", but how to prevent leakage without "sealing"?

Much pasture membrane appear rupture phenomenon, especially for low grass membrane thickness is more common, and the horizontal tensile rupture in the process of production for common, film is easily broken when high-speed transverse tensile, we generally divides into the horizontal tensile rupture in transverse rupture in longitudinal membrane and unclamping breaking film three types, the parsing for you three types of transverse tensile rupture in comes in.