Air Permeability Test For Fabric

Determination of the permeability of fabrics to air.

Air permeability test for fabric.

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

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 r x 167 a where qv is the flow rate of air in dm 3 per min or liters per min a is the fabric area in cm 2 shirley air permeability tester is widely used for fabric air permeability testing. 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 tester is the common used to measure it.

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 can be measured using the following test methods. 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. In this article i will explain fabric air permeability testing by shirley air permeability tester.

Air permeability also can be used to provide an indication of the breathability of weather resistant and. Standard test method for air permeability of textile.