Air Permeability Test For Fabric

Standard test method for air permeability of textile.

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 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. It is used to test the resistance of the flow of air through fabrics. 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.

Air permeability tester price is competitive. In filtration for example efficiency is directly related to air permeability. 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. Air permeability can be measured using the following test methods.

In this article i will explain fabric air permeability testing by shirley air permeability tester. Air permeability tester is the common used to measure it. 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 tester of textile fabrics complies with astm d737 iso 9237 7231 bs 5636 etc.

Determination of the permeability of fabrics to air. En iso 9237.