WVTR: What Water Vapor Transmission Rate Is and How It Is Measured The water vapor transmission rate (WVTR) is an important parameter for evaluating the moisture barrier properties of films and packaging materials. It describes how much water vapor passes through a material over a specified area and period under defined test conditions. WVTR testing…
Oxygen Permeability of Films: How It Is Measured and Why It Matters Oxygen permeability is an important property when evaluating films and packaging materials designed to control gas transmission. It describes how readily oxygen can move through a material under defined conditions and helps characterize its barrier performance. Understanding oxygen permeability can support material selection,…
OTR: What Oxygen Transmission Rate Is and How It Is Measured Oxygen transmission rate (OTR) is an important parameter for evaluating the barrier properties of films and packaging materials. It describes how much oxygen passes through a material over a specified area and period under defined test conditions. OTR measurements help manufacturers, packaging developers and…
Barrier Films: Properties, Materials and Measurement Methods Barrier films are materials designed to control the transmission of gases and vapor through a packaging structure. They are used in applications where oxygen, moisture or carbon dioxide transmission needs to be limited or characterized. Their performance depends on the materials used, the film structure, the intended application…
Film Barrier Properties: What They Are and How to Evaluate Them Film barrier properties describe how effectively a material limits the transmission of gases and vapor through its structure. They are important when selecting and developing packaging materials designed to control the transfer of oxygen, water vapor, carbon dioxide and other substances. Understanding barrier performance…
How to Measure the Permeability of a Plastic Film Measuring the permeability of a plastic film helps manufacturers, material developers and laboratories understand how gases and water vapor pass through a material. These measurements are important when comparing film formulations, evaluating barrier properties and selecting materials for packaging applications. The appropriate test depends on the…
