Jul 28, 2020 · Two of the most important and widely used test method and standard used in food packaging industry used to establish barrier properties and thus shelf-life expectations this are the Oxygen Transmission Rate (OTR) and Moisture Vapor Transmission Rate (MVTR).

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.

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MVTR is a measure of the pas-sage 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 and CO2 stand for Oxygen Transmission Rate (OTR) and Carbon Dioxide Transmission Rate (COTR) in cm3-mil/m2/24hr.

OTR (oxygen transmission rate) is the steady state rate at which oxygen gas permeates through a film at specified conditions of temperature and relative humidity. Values are expressed in cc/100 in 2 /24 hr in US standard units and cc/m 2 /24 hr in metric (or SI) units.

MVTR: Moisture Vapor Transmission. O2: Oxygen Barrier. CO2: Carbon Dioxide Barrier

Moisture vapor transmission rate (MVTR), also water vapor transmission rate (WVTR), is a measure of the passage of water vapor through a substance. It is a measure of the permeability for vapor barriers. There are many industries where moisture control is critical.

Good moisture barrier can be achieved with monolayer HDPE MVTR grades. How Does PE & PP Provide Barrier? Fair moisture barrier can be achieved with monolayer LDPE grades. Polyethylene and polypropylene have poor oxygen (gas) barrier but good-moderate moisture barrier properties.

MVTR stands for “ Moisture Vapor Transmission Rate “, a measure of the passage of gaseous H 2 O through a barrier. It’s also known as “ WVTR “, or “ Water Vapor Transmission Rate “. Most flexible packaging is intended to preserve contents and …

Many variables affect high-density polyethylene (HDPE) film's oxygen transmission rates (OTR), and water vapor transmission rates (WVTR). These variables include film crystalline structure, relaxation rates of molten polyethylene,