Classification display
Blue breathable film
The PE waterproof and breathable membrane produced by our company has good waterproof performance and high air permeability. After being compounded with PP spunbond non-woven fabric, it is the main material choice for protective clothing. People will not feel uncomfortable when wearing it on their bodies, thus enabling workshop workers to wear it for a long time. And according to customer needs to produce different thickness, different color products, to meet the different needs of different scenes.
Key words:
Product display
Detailed description
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关键词：
- 透气膜
- 防水
- PE膜
Waterproof breathable membrane (non-woven fabric is a new type of polymer waterproof material. In terms of manufacturing process, the technical requirements of waterproof vapor permeable membrane are much higher than those of ordinary waterproof materials. At the same time, in terms of quality, waterproof vapor permeable membrane also has functional characteristics that other waterproof materials do not have. Waterproof vapor permeable membrane is mainly used in steel structure and wood structure construction in the construction field. The domestic market is relatively chaotic. Most brands promoted through the network do not have the ability to produce waterproof vapor permeable membrane, but the use of non-woven and glue simple composite fake and shoddy products. Regular brand recommendations refer to the national standard design atlas 06J925-2 "profiled steel plate, sandwich panel roof and wall construction (II)".
In the state of water vapor, the water particles are very small, and according to the principle of capillary motion, they can smoothly penetrate into the capillary to the other side, so that the phenomenon of vapor permeation occurs. When the water vapor condenses into water droplets, the particles become larger. Due to the surface tension of water droplets (water molecules "pull against each other"), water molecules cannot smoothly separate from water droplets and penetrate to the other side, that is, to prevent the occurrence of water penetration, so that the permeable membrane has a waterproof function.
The technology of waterproof and breathable membrane was first introduced from European and American countries. However, the production process of domestic products is varied, and the product quality of various manufacturers is uneven, and a unified quality standard has not been formed. In fact, the waterproof breathable membrane is mainly composed of three layers: PP spunbond non-woven fabric, PE polymer breathable membrane, PP spunbond non-woven fabric. The role of spunbonded non-woven fabric is mainly to enhance the tension and hydrostatic pressure and protect the middle layer (breathable film), the real breathable mainly depends on the middle layer PE polymer breathable film.
production process of waterproof breathable membrane:
There are three main types: 1. Casting compound. This process is to use plastic particles hot melt after relying on the plastic itself adhesive compound.
2. Spray or scraping compound (hot melt compound).
3. Hot pressing compound.
Use advantages
High temperature-the use of working temperature of 250 ℃.
Low temperature resistance-has good mechanical toughness; even if the temperature drops to -196 ℃, it can maintain 5% elongation.
Corrosion resistance-for most chemicals and solvents, showing inert, strong acid and alkali, water and various organic solvents.
Weather-resistant-has the best aging life in plastics.
High lubrication-is the lowest coefficient of friction in solid materials.
Non-adhesion-is the smallest surface tension in a solid material and does not adhere to any substance.
Non-toxic-physiologically inert, as a long-term implantation of artificial blood vessels and organs without adverse reactions.
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