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The Basic Principle of Waterproof Breathable Coating Textile
2016-03-21 08:55  Clicks:
Waterproof and moisture permeable coating fabric is a kind of waterproof and moisture permeable has two opposite functional fabric. With the porous film bonding do waterproof breathable coating as an example, it is made of polytetrafluoroethylene fine powder heating films, and then rapidly from the transverse and longitudinal tensile, micro porous structure of cooling after the formation of thermosetting arachnoid. Finally will use adhesive film pressure in the nylon silk or polyester fabrics, made of waterproof and moisture permeable coating fabric.
 
Since the fabric is covered with a layer of porous film, its pore diameter is 0.5-3μm, it is much smaller than the raindrop diameter, so the fabric coated microporous formed on a completely prevented by water droplets and rain. In addition, due to the external environment and clothes in the memory and temperature difference of vapor pressure difference, makes the human body sweat vapor can smoothly through the microporous emitted into the in vitro. But the human body sweat vapor molecular size is about 0.0004μm, far less than the diameter of the microporous film.
 
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