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Fabric definition:
    Waterproof breathable fabric main functions are: waterproof, breathable, breathable, insulation, wind, warmth. From the production process, waterproof breathable fabric technical requirements than the average waterproof fabric high; the same time from the quality point of view, waterproof breathable fabric also has other waterproof fabrics do not have the functional characteristics. Waterproof breathable fabric in strengthening the fabric airtight, watertight at the same time, its unique permeability of steam, allows the structure of the internal water vapor quickly discharged to avoid the structure of breeding mold and keep the human body is always dry, perfect solution to the ventilation and wind, water, Warm and other issues, is a healthy environment of the new fabric.
    The real waterproof fabric in a long period of humid climate in the environment can withstand water seepage pressure, no water seepage. Such as a long time in the stormy outdoor walking, kneeling or sitting on the wet ground, will not seepage.
working principle:
     In the state of water vapor, water particles are very small, according to the principle of capillary movement, can be successfully penetrated into the capillary to the other side, resulting in vapor permeability phenomenon. When the condensation of water vapor into water droplets, the particles become larger, due to the role of water droplets surface tension (water molecules compete with each other "pull"), water molecules can not successfully from the water infiltration to the other side, that is to prevent Water infiltration occurs, so that the membrane has a waterproof function.