Gas barrier packaging material

B - Operations – Transporting – 32 – B

Patent

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154/119, 154/138

B32B 27/08 (2006.01) B32B 33/00 (2006.01)

Patent

CA 1058501

Abstract of the Disclosure Multiple ply packaging materials formed of certain polymer films, each having a gas permeability of 10 or less cc per 100 square inches per mil thickness over a 24 hour period at one atmosphere pressure, and 73°F. and 50% R.H., such as polyvinylidene chloride, exhibit unexpectedly high gas barrier properties in comparison with a single film of the same equiva- lent thickness.

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