Provided is a gas-barrier multilayer film which decreases little in gas-barrier properties even through retortion and which suffers no delamination. The gas-barrier multilayer film is characterized by comprising a plastic film and, superposed directly or through other layer on at least one surface thereof in the following order, an inorganic thin film layer and a gas-barrier resin composition layer. The gas-barrier film is further characterized in that the gas-barrier resin composition layer has been formed from a gas-barrier resin composition comprising a gas-barrier resin constituted of an ethylene/vinyl alcohol copolymer, an inorganic lamellar compound, and an additive, that the content of the inorganic lamellar compound in the gas-barrier resin composition is 0.1-9.0 mass%, that the additive is a coupling agent and/or a crosslinking agent, and that the gas-barrier resin composition layer has a thickness of 0.05-0.5 µm.
本发明提供了一种气体阻隔多层膜,即使经过再变形,其气体阻隔性能也几乎不会降低,而且不会分层。这种气体阻隔多层膜的特点是:由塑料薄膜及其至少一个表面上按以下顺序直接或通过其他层叠加的无机薄膜层和气体阻隔
树脂成分层组成。该气体阻隔薄膜的进一步特征在于,气体阻隔
树脂组合物层是由气体阻隔
树脂组合物形成的,该气体阻隔
树脂组合物包括由
乙烯/
乙烯醇共聚物、无机片状化合物和添加剂构成的气体阻隔
树脂,无机片状化合物在气体阻隔
树脂组合物中的含量为 0.1-9.0 质量%,添加剂为
偶联剂和/或
交联剂,气体阻隔
树脂组合物层的厚度为 0.05-0.5 微米。