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  3. Investigation of Film Thickness on Oxygen Barrier Performance

Investigation of Film Thickness on Oxygen Barrier Performance

Investigation of Film Thickness on Oxygen Barrier Performance

Investigation of Film Thickness on Oxygen Barrier Performance

Product catalog summary
Investigation Overview
The study examines the impact of film thickness on the oxygen barrier performance of packaging materials, focusing on PET (polyethylene terephthalate) and PE (polyethylene) layers. The investigation utilized the differential pressure method as per ASTM D1434, employing the Labthink VAC-V2 Gas Permeability Tester.
Test Specimens and Methodology
Three composite film specimens were tested with varying thicknesses: PET(12μm)/PE(45μm), PET(12μm)/PE(60μm), and PET(25μm)/PE(45μm). The Oxygen Transmission Rate (OTR) was measured to determine the amount of oxygen permeating through the films.
Key Findings
The results indicated that the OTR decreased with increased thickness of both PET and PE layers. Notably, a thicker PET layer (Specimen #3) led to a more substantial reduction in OTR compared to a thicker PE layer (Specimen #2). This suggests that the PET layer is more influential in enhancing oxygen barrier performance.
Conclusions and Recommendations
Increasing the thickness of the PET layer is a more effective strategy for improving oxygen permeability than increasing the PE layer thickness. As the demand for advanced packaging materials rises, evolving testing methods are crucial for comprehensive evaluations. Labthink promotes collaboration with industry partners for quality control improvements.
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Catalog excerpts

Investigation of Film Thickness on Oxygen Barrier Performance-1

Labthink Instruments Co., Ltd. [email protected] +86-531-85068566 Investigation of Film Thickness on Oxygen Barrier Performance PET layer plays an important role in oxygen barrier performance for the tested materials. To investigates the influence of film thickness on oxygen permeability in packaging materials, we tested three composite film specimens with different PET (polyethylene terephthalate) and PE (polyethylene) layer thicknesses. The test adopted a differential pressure method according to ASTM D1434, test instrument was Labthink VAC-V2 Gas Permeability Tester. We prepared specimens in different thickness, PET(12μm)/PE(45μm), PET(12μm)/PE(60μm) and PET(25μm)/PE(45μm). The instrument measures the Oxygen Transmission Rate (OTR), which signifies the amount of oxygen permeating through a film per unit area under specific conditions.

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Investigation of Film Thickness on Oxygen Barrier Performance-2

Labthink Instruments Co., Ltd. [email protected] +86-531-85068566 The test result shows that OTR decreased with increasing thickness for both PET and PE layers. Thicker PET layer (Specimen #3) resulted in a more significant OTR reduction compared to a thicker PE layer (Specimen #2). PET layer plays a dominant role in oxygen barrier performance for the tested materials. Increasing PET thickness offers a more efficient way to improve oxygen permeability compared to increasing PE thickness. As the demand for functional packaging materials grows, testing methods are evolving to ensure a more comprehensive...

 Open the catalog to page 2

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