GAS BARRIER MULTILAYER BODY AND LAMINATE

摘要

Disclosed is a gas barrier multilayer body comprising a plastic base (I); a gas barrier layer (II) which is made of a gas barrier layer-forming coating material (C) containing a polyalcohol polymer (A) and a polycarboxylic acid polymer (B); and an over coat layer (III) which is made of an over coat layer-forming coating material (F) containing at least one of a monovalent metal compound (D) and a divalent or higher valent metal compound (E). In this gas barrier multilayer body, the gas barrier layer (II) is arranged on the plastic base (I) directly or via an anchor coat layer, and the over coat layer (III) is arranged on the gas barrier layer (II). When a laminate is obtained by arranging, in this order, a laminate adhesive layer (IV) and a heat seal layer (V) on the over coat layer (III) or the plastic base (I) of the gas barrier multilayer body directly or via an print ink layer, the lamination strength (X) of the laminate is not less than 1 N/cm and the ratio of the lamination strength (Y) after a 30 minute hot water treatment at 95°C relative to the lamination strength (X), namely the ratio Y/X is not less than 0.3.