Two primary test items are employed to evaluate the barrier properties of dairy packaging materials:
Oxygen barrier Test: This test, potentially utilizing instruments like the Labthink C206H Oxygen Transmission Rate Test System, measures the rate of oxygen permeation through the packaging material. Lower oxygen permeability values indicate superior barrier properties.
Water Vapor barrier Test: This test assesses the rate of water vapor transmission through the packaging. Lower water vapor permeability signifies a stronger barrier against moisture. C406H Oxygen/Water Vapor Transmission Rate Test System is developed for measuring the oxygen and water vapor transmission rate of barrier materials
The selection of packaging materials for dairy products should prioritize achieving the desired shelf life while optimizing cost-effectiveness. High barrier materials, such as paper molded aluminum foil laminates or aluminum laminated plastic films, offer extended shelf life (months) and eliminate the need for strict cold storage requirements. Conversely, low barrier materials like PE monochrome films have a shorter shelf life (days) but are more economical.
Table 1 (see attached) presents the barrier properties of various commonly used dairy packaging materials. Paper molded laminated materials and aluminum laminated films exhibit the best barrier properties against both oxygen and water vapor, justifying their use for products with longer shelf life. Coated/laminated films offer a medium barrier performance at a moderate cost. PE monochrome films, while cost-effective, demonstrate the weakest barrier properties.
Table 1: Barrier Property Test Data of Dairy Packaging Materials
The selection of packaging materials for dairy products should prioritize achieving the desired shelf life while optimizing cost-effectiveness. High barrier materials, such as paper molded aluminum foil laminates or aluminum laminated plastic films, offer extended shelf life (months) and eliminate the need for strict cold storage requirements. Conversely, low barrier materials like PE monochrome films have a shorter shelf life (days) but are more economical.
Table 1 (see attached) presents the barrier properties of various commonly used dairy packaging materials. Paper molded laminated materials and aluminum laminated films exhibit the best barrier properties against both oxygen and water vapor, justifying their use for products with longer shelf life. Coated/laminated films offer a medium barrier performance at a moderate cost. PE monochrome films, while cost-effective, demonstrate the weakest barrier properties.
Table 1: Barrier Property Test Data of Dairy Packaging Materials
Barrier testing plays a critical role in selecting appropriate packaging materials for dairy products. The optimal packaging material balances the desired shelf life with cost considerations. While current domestic dairy packaging materials meet general quality assurance requirements, there is a need for further development of high-barrier materials to support the introduction of innovative dairy products and processing technologies.
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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