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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:

Manufactured fiber made of continuous filaments, and made of two related components, each with different degrees of shrinkage. The result is a crimping of the filament, which makes the fiber...
Some polymeric fibres are spun by melting the polymer to a liquid state. The liquid is forced through the spinner opening under pressure and cooled by a jet of air to form the filament. Nylon can be...
Silk in a crosswise rib (plain or twill weave). Has brightly colored stripes in the filling direction. Often black warp. The color effects are usually startling or bizarre. Mostly produced in India....
Coir (from Malayalam kayaru - cord) is a coarse fibre extracted from husk, the fibrous outer shell of a coconut. Structure The individual fibre cells are narrow and hollow, with thick walls made of...
A term used to describe a fabric that burns very slowly, or has the ability to self-extinguish upon the removal of an external flame. Flame Retardant - A chemical applied to a fabric, or incorporated...

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