Precautions For Detecting The Permeability Of PE Stretched Film

The permeability of the so-called PE stretch film is mainly expressed by the gas transmission amount and the gas transmission coefficient, only when the gas permeability is stable in the unit time can it be better used, which requires us to use the detection method to determine its permeability, generally its detection experiment is operated on a special instrument. So what do we need to pay special attention to in the detection process? Next is a simple introduction for you.
1, the test to strictly control the constant temperature.
2, the test PE tensile film degassing, breathability takes a long time, the low pressure room pressure detection should be achieved after stable transmission can be recorded.
3, the test inspection process is carried out under the pressure difference conditions of two high and low pressure chambers, so in order to ensure the accuracy of the PE stretch film detection test data, we must pay attention to the tightness of the system in the working instrument.
Therefore, when testing the permeability of PE stretched film, in order to ensure the accuracy of the test results, we must pay more attention to the above content to avoid errors affecting the test results.