| abstract |
The present invention provides a multilayer structure that has excellent gas barrier properties and peel strength between a substrate and a gas barrier layer after retort treatment, does not cause delamination even after retort treatment in the presence of stress, and can maintain good appearance, and packaging materials and products using the same provides The present invention comprises a substrate (X), a layer (Z) laminated on the substrate (X), and a layer (Y) laminated on the layer (Z), wherein the layer (Y) is a metal oxide comprising aluminum It relates to a multilayer structure comprising a reaction product (D) of (A) and an inorganic phosphorus compound (BI), wherein the layer (Z) comprises a polyvinyl alcohol-based resin (C) and a polyester-based resin (L). |