... anti-static electricity Superior size stabilityTypical thickness:18μm , 19μm ,20μm ,28μm , 38μm 40μm …Technique parameters:ProertiesTest MethodUnitTypical date(19mic)Physical ... PermeabilityASTM D 96-66 38 deg C , 90% RHg/m²/24hrs7.5Oxygen PermeabilityASTM D 1434 23 deg C, 0% RHcm ... ³/m²24hrs1800Size StabilityHeat ShrinkageMDASTM D 1204 120 deg C , 5min% ...