Abstract: A polyvinyl alcohol type resin, which renders possible preparation of a packaging material having high gas barrier property under a high humidity condition even as a monolayer film, is provided. The polyvinyl alcohol (PVA) type resin of the invention has at least a PVA structural unit and also has an alicyclic structural unit in the main chain. A monolayer film containing this PVA type resin and a laminate containing at least one layer comprising this PVA type resin can be used as a packaging material which shows high gas barrier property even under a high humidity condition.

Abstract: A polyvinyl alcohol type resin, which renders possible preparation of a packaging material having high gas barrier property under a high humidity condition even as a monolayer film, is provided. The polyvinyl alcohol (PVA) type resin of the invention has at least a PVA structural unit and also has an alicyclic structural unit in the main chain. A monolayer film containing this PVA type resin and a laminate containing at least one layer comprising this PVA type resin can be used as a packaging material which shows high gas barrier property even under a high humidity condition.

Abstract: The present invention provides a resin composition that is added when a multi-layer structure containing hydrolyzed ethylene-vinyl acetate copolymer is reground into a multi-layer structure and a process for preparing a multi-layer structure using the resin composition. Specifically, the present invention relates to a resin composition comprising (A) polyolefin, (B) metal salt of higher fatty acid having 12 to 30 carbon atoms and (C) zeolite. Also, the multi-layer structure is prepared by the process of regrinding by adding the resin composition to a multi-layer structure containing hydrolyzed ethylene-vinyl acetate copolymer.