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What is "Air Permeability" - Definition & Explanation

The volume of air passing through a fabric under pressure.
The porosity of a fabric as estimated by the ease with which air passes through it. Air permeability measures the warmth of blankets, the air resistance of parachute cloth, the wind resistance of sailcloth, etc. as measured on standard testing equipment.
The permeablity, or the ease with which air passes through material. Air porous ness determines such factors as the wind resistance of sailcloth, the air resistance of parachute cloth, and the effectiveness of different kinds of air filtration media. It is also a measure of warmness, or coolness of a fabric.
The degree to which a fabric, coating or laminate allows air to pass through its construction.

Some other terms

Some more terms:

The name given to ultra-fine manufactured fibers and the name given to the technology of developing these fibers. Fibers made using microfiber technology, produce fibers which weigh less than 1.0...
These are warp faced cotton fabrics woven with 3,4, and 5 thread warp faced twills and 5 thread satin, with the twill lines running opposite to the direction of the twist of the warp yarn. Thus a...
In wet spinning, the polymer used to form the fibre is dissolved in solution. The solution is forced under pressure through an opening into a liquid bath in which the polymer is insoluble. As the...
A plain tightly woven cotton fabric with the fine yarns and processed with a glazed finish. Used as a plain dyed fabric or a printed fabric. The term is sometimes used for ungazed fine count cottons....
In a woven fabric, the yarn running from selvage to selvage at right angles to the warp. Each crosswise length is called a pick. In the weaving process, the filling yarn is carried by the shuttle or...

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