Shelf life indication can be effectively measured by how many cubic centimeters of oxygen can permeate through 1 square meter of material over a 24-hour period. A standard PA/PE bag allows on average 100 cubic centimeters, PVDC allows on average over 10, and EVOH on average 1 cubic centimeter.
Shelf life indication can be effectively measured by how much oxygen permeates through a given material over 24 hours, expressed in cubic centimeters per square meter. A standard PA/PE bag allows an average of 100 cubic centimeters, PVDC allows over 10 cubic centimeters on average, and EVOH averages only 1 cubic centimeter.