Permeability Test in Plastic Packaging Systems

What are the Permeability Properties in Plastic Packaging Systems? What are the Precautions to be Taken in Packaging Process?

The most important tasks of packaging; to protect the properties of the food throughout its shelf life, to inform the consumer and to ensure that the product is sold. There are many factors that affect the shelf life of food products in particular. The most important of these is the product / packaging / environmental system shows a very dynamic structure.

Unlike glass, metal and paper-cardboard packaging, plastic materials have a higher ability to pass low-molecular components such as gases, water vapor, organic vapors and liquids. Knowing the permeability values ​​of the plastic materials used in food packaging, the type of material to be used in the packaging process is determined and the quality of the products is maintained throughout the shelf life.

Permeability; It is a mass transfer event that takes place by the transport of some substances dissolved on the polymer surface from the inner atmosphere to the outer atmosphere or vice versa.

Factors Affecting Permeability:

- Polymeric Factors
- Environmental Factors
- Food related factors

The permeability of water vapor, light, gas, aroma and fragrance substances of food packaging is an important issue to be considered. Especially in foodstuffs, the factor that causes many chemical, enzymatic and microbiological reactions to start is oxygen permeability.

Another important point is water vapor permeability. When foods are kept in an environment that does not change the humidity and temperature, they intake or give off water. In this case, the packaging material to be used should be determined by considering the water vapor permeability.

Since it causes the initiation and acceleration of oxidative reactions, light transmittance and aroma and odor permeability are factors that should be determined and precautions should be taken beforehand in order to prevent the loss of aroma and fragrance flavors in the process until they reach the consumer.

As a result; Considering the properties of the foodstuff, suitable packaging material should be selected and used.

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