Material Fabric Construction of Waterproof Vents

The development of waterproof vents is also a gradual process. From the original waterproof glue to meet the waterproof requirements of shoes, clothing and tents, to the PU film with stable but imperfect waterproofness, to the TPU film developed on the basis of the PU film, to the current waterproof vent.

Material of waterproof vents Fabric construction:

The waterproof vent has the functions of waterproof and breathable, thermal insulation, and the realization of these functions is determined by the structural material of the waterproof vent.

Construction principle: The waterproof vent is made of polymer material + polyolefin microporous film + polymer material through hot pressing. The technology is the first in China and advanced in the world. The polyolefin microporous membrane has excellent air permeability, and the product is durable and has a long service life. Polyolefin microporous membrane is not only anti-corrosion, acid and alkali resistance, but also has excellent elongation performance. After nail piercing, it can quickly rebound to increase sealing performance. Its waterproof and breathable performance can allow the water vapor in the room or the insulation layer to penetrate out, and after the water vapor condenses and forms water droplets, the water droplets will also be blocked outside the breathable film. So as to ensure the performance of indoor and building, but also thermal insulation. It is a new high-tech energy-saving and environmentally friendly material.

Its working principle is that the working principle of ventilation can be divided into two types: micropores and hydrophilic groups. Since the minimum diameter of water droplets is about 20 microns, and the diameter of water vapor molecules is only about 0.0004 microns, there is a huge difference in diameter between the two. Water vapor can pass through the microporous membrane by the principle of diffusion. Because of the surface tension of liquid water or water droplets, water molecules cannot pass through, which prevents the penetration of water, and makes the breathable membrane waterproof.