Provided is a weather-resistant gas barrier film capable of keeping a high delamination strength and an excellent gas barrier property in a high-temperature high-humidity environment and in a UV radiation environment.
The gas barrier film comprises a substrate film, a weather-resistant coating layer formed on at least one surface thereof, and an inorganic thin film layer formed on the surface of the coating layer, wherein the weather-resistant coating layer is selected from (1) a weather-resistant coating layer that contains an acrylic copolymer having at least one group selected from a UV-stabilizing group, a UV-absorbing group and a cycloalkyl group, (2) a weather-resistant coating layer formed by crosslinking a polycaprolactone-polyol and/or a polycarbonate-polyol as the essential ingredient, and (3) a weather-resistant coating layer formed by crosslinking a modified polyvinyl alcohol; and also provided is a method for producing the gas barrier film.
本发明提供了一种耐候性气体阻隔薄膜,能够在高温高湿环境和紫外线辐射环境下保持较高的分层强度和优异的气体阻隔性能。
该气体阻隔膜包括基底膜、形成在其至少一个表面上的耐候涂层和形成在涂层表面上的无机薄膜层,其中耐候涂层选自 (1) 含有
丙烯酸共聚物的耐候涂层,该
丙烯酸共聚物具有至少一个选自紫外线稳定基团的基团、(2) 以聚
己内酯-多元醇和/或聚
碳酸酯-多元醇为主要成分,通过交联形成的耐候涂层;以及 (3) 通过交联改性聚
乙烯醇形成的耐候涂层;还提供了一种生产气体阻隔薄膜的方法。