Polyvinyl alcohol-based film
AssigneeMitsubishi Chemical Corporation
InventorTakatoshi YAMAMOTO
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Abstract
Provided is a polyvinyl alcohol-based film containing a polyvinyl alcohol-based resin (A), wherein the absolute value of a difference (|α−β|) between an arithmetic average height (Sa) α of a first surface of the polyvinyl alcohol-based film and an arithmetic average height (Sa) β of a second surface of the polyvinyl alcohol-based film is 0.10 μm or less in order to provide a polyvinyl alcohol-based film capable of suppressing occurrence of winding wrinkles when the film is wound around a core tube.
Claims15
A polyvinyl alcohol-based film comprising a polyvinyl alcohol-based resin (A), wherein an absolute value of a difference (|α−β|) between an arithmetic average height α of a first surface of the polyvinyl alcohol-based film and an arithmetic average height β of a second surface of the polyvinyl alcohol-based film is 0.10 μm or less.
Dependencies are inferred from the claim text.