The Impact of Foil PInholes and Flex Cracks on the Moisture and Oxygen Barrier of Flexible Packaging, 2005 PLACE Conference

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High barrier packaging applications for medical, industrial and food packaging often include aluminum foil. Thinner gauges of aluminum foil contain pinholes through which moisture and oxygen from the environment can enter the package accelerating the degradation of the contents. This paper addresses the impact of foil pinholes and fractures on the oxygen and moisture barrier of multilayer flexible packaging, in theory and in practice using laser-produced pinholes. The analysis shows that the transmission through the pinholes is less that occurring through exposed sealant edges and much less than that which would take place through non-foil packaging of the same size.

Author: Murray, L.J.
The Impact of Foil PInholes and Flex Cracks on the Moisture
The Impact of Foil PInholes and Flex Cracks on the Moisture and Oxygen Barrier of Flexible Packaging, 2005 PLACE Conference
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