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The barrier property variables for Aluminum based laminates, both under flexed and unflexed condition, were compared with that of MPET based laminates in order to understand comparative suitability of the later for coffee packaging. Keeping the expected shelf life condition of 180 days the different barrier property variables of the sample MPET and Aluminum based laminates, at the optimality condition, were found out. At the optimum condition, Oxygen transfer rate (OTR) under flexed condition is marginally better for MPET based laminates. However, Aluminium laminates in flexed condition allowing moisture transfer (WVTR) at the rate 24.32 percent stronger than MPET based laminates which may not be good for coffee packaging.
Dutta, Abhishek and Dutta, Gautam
"Comparing Optimum Barrier Variables of Aluminium and MPET Foil Based Laminates for Coffee Packaging,"
Journal of Applied Packaging Research: Vol. 8
, Article 5.
Available at: http://scholarworks.rit.edu/japr/vol8/iss3/5