Air Permeability Test For Fabric

When you do air permeability testing for fabric there is different air permeability test method.

Air permeability test for fabric.

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. The air permeability of a fabric also has some bearing on its water vapour permeability but the two are by no means identical. Determination of the permeability of fabrics to air. En iso 9237.

Air permeability can be measured using the following test methods. 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. Air permeability tester of textile fabrics complies with astm d737 iso 9237 7231 bs 5636 etc. 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. Standard test method for air permeability of textile. It is used to test the resistance of the flow of air through fabrics. 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.