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Abstract

A laminate having a polypropylene resin film and an inorganic oxide layer, wherein the laminate is characterized in that the water vapor transmission rate is less than 3.0 g/m²/day, the peel strength of the inorganic oxide layer is 0.7 N/15 mm or more, and when the stress at 121° C. in the main orientation axis direction as measured by thermomechanical analysis (TMA) is denoted by SF_{121° C.} and the stress at 145° C. in the main orientation axis direction is denoted by SF_{145° C.}, said laminate satisfies SF_{145° C.}−SF_{121° C.}≤2.50 MPa. The present invention provides a laminate that is suitable for use in applications in which processing and use in a high-temperature environment are required and there is a need to reduce the effects of moisture.

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First Claim