Laminat und Verfahren zu seiner Herstellung

摘要

A laminate using a polymeric molded article as a substrate and having a light transparency, gas barrier properties and an excellent alkali resistance is obtainable by carrying out a surface treatment to deposit an oxide of at least one metal selected from the metal elements of groups 2, 8, 9, 10 and 11 of the periodic table, and then forming a gas barrier layer such as oxides of silicon, nitrides of silicon and carbides of silicon on the treated surface. The gas barrier layer is not peeled off from the polymeric molded article even after immersion in an alkali solution of pH 12 or more. The amount of the metal on the treated surface is preferably in the range of 5 x 10<14> atoms/cm<2> to 3 x 10<16> atoms/cm<2> in terms of the metal atoms per unit area. The practical performance of the laminate is not deteriorated during the patterning, by alkali etching, of a transparent conductive layer formed on the laminate.