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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:

Single textile material with addition of an extra warp of filling added for weight and warmth. The extra warp or filling ma is of wool, worsted, cotton, or other yarns. This type of construction is...
process of industrially washing garments after they have been manufactured to remove sizing; it also softens and pre-shrinks. Grommet - an eyelet of firm material to strengthen or protect an opening....
A fabric whose weave is made up of 2 or 3 warp yarns or threads to every one weft. Weave with diagonal ribs and large number of variations. Diagonals may be set at sharp or blunt angles, may be...
Wilton carpet is produced on a specific type of weaving machine called wire loom. Wilton carpets are pile carpets whereby the pile is formed by inserting steel rods in the pile warps of the fabric....
Colors like red, orange, and yellow are called warm colors. They are advancing in nature because, as seen by the eye, these colors move closer thereby reducing the size of an object. Warm colors are...

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