Air Permeability Test For Fabric

The air permeability of a fabric also has some bearing on its water vapour permeability but the two are by no means identical.

Air permeability test for fabric.

Fabric air permeability is a nature of air passing through fabric normally under the situation that two sides of fabric exist pressure difference that is to say it is speed that airflow vertically goes through fabric in a prescribed test area pressure drop and time whose unit is mm s or m s. 5 2 air permeability is an important factor in the performance of such textile materials as gas filters fabrics for air bags clothing mosquito netting parachutes sails tentage and vacuum cleaners. Air permeability is defined as the volume of air in millilitres which is passed in one second through 10os mm2 of the fabric at a pressure difference of 10mm head of water. Standard test method for air permeability of textile.

It is used to test the resistance of the flow of air through fabrics. Air permeability tester of textile fabrics complies with astm d737 iso 9237 7231 bs 5636 etc. In the british standard test the airflow through a given area of fabric is measured at a constant pressure drop across the fabric of 10mm head of water. Determination of the permeability of fabrics to air.

Air permeability tester is the common used to measure it. Air permeability can be measured using the following test methods. Air permeability tester price is competitive. En iso 9237.

In filtration for example efficiency is directly related to air permeability. When you do air permeability testing for fabric there is different air permeability test method.