The primary objective of the study was to assess the impact of packaging material barrier properties on the quality of nitrogen-filled packaging. To achieve this, the gas composition within nitrogen-filled packages and the permeability of the packaging materials to nitrogen and oxygen were examined.
The study utilized a cake nitrogen-filled package as the sample. The gas composition within the package after a specific storage period was analyzed using a headspace gas analyzer. The permeability of the packaging material to nitrogen and oxygen was determined using a differential pressure gas permeability tester.
The differential pressure method, based on ASTM D1434, was employed to measure gas permeability. This method involves creating a pressure differential across a sample and monitoring the rate at which gas permeates through it.
The testing instrument utilized in this study include Labthink C650H Headspace Gas Analyzer and Labthink VAC-V2 Differential Pressure Gas Permeability Tester.
C650H Headspace Gas Analyzer is of professional structure design and is with high-precision sensor, the O2 Content in sealed bags, bottles, cans and other hollow packaging containers can be accurately and conveniently determined. Meanwhile, with the selection of test accessories, CO2 can also be tested. It is suitable for the production line, warehouse, laboratory and other scenes to quickly and accurately evaluate the content of O2 and CO2 in the gas, so as to guide the production.
VAC-V2 is based on the differential pressure method, and is professionally applicable to the determination of gas transmission rate as well as solubility coefficient, diffusion coefficient and permeability coefficient of plastic films, composite films, high barrier materials, sheeting and aluminum foils.
The study found that the packaging materials had a relatively high permeability to both nitrogen and oxygen. This indicates that the barrier properties of the packaging were insufficient to maintain a high nitrogen concentration within the package over time. Consequently, the oxygen content increased significantly, while the nitrogen content decreased, compromising the quality-preserving effects of nitrogen-filled packaging.
In conclusion, this analysis highlights the importance of selecting packaging materials with superior barrier properties to ensure the effectiveness of nitrogen-filled packaging. By carefully evaluating the permeability of packaging materials to nitrogen and oxygen, manufacturers can optimize the design and performance of nitrogen-filled packages, thereby preserving the quality of products for extended periods.
As the demand for functional packaging materials grows, testing methods are evolving to ensure a more comprehensive evaluation of packaging films. Labthink encourages collaboration with packaging industry companies for quality control! Visit the website www.labthink.com to learn more!
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