Abstract
The harmful ingredients in packaging materials and containers usually migrate to food during the machining and printing period. The permeability of packaging materials is very important for the food packaging safety. Several commonly used packaging materials were researched in this paper. Their permeability was characterized including the gas permeability, light-transmitting property, and the water vapor permeability. Some technologies which could improve the barrier property were brought forward. And the factors that impact the permeability were discussed in this research. Research on the permeability of packaging material is significant for food industry.
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