Plastics  Comparison  Chart

*MVTR stands for Moisture Vapor Transmission Rate in g-mil/100in. 2/24hr. MVTR is a measure of the passage of gaseous H2O through a barrier. The lower the rate, the longer the package protects its contents from moisture and ensures the moisture content of the product remains the same.

**O2 stands for Oxygen Transmission Rate (OTR) in cm3-mil/m2/24hr. OTR is a measure of the amount of gas that passes through a substance over a given period. The lower the readings, the more resistant the plastic is to letting gasses through.