To maintain a transparency, as barrier property, and so forth even after a disinfection treatment or γ ray irradiation by forming an ancillary coated film layer having a specific coating agent applied and dried on an inorganic compound evaporated layer of a transparent polymeric base material, and laminating a thermoplastic resin layer thereon.

An ancillary coated film layer 3 is provided on an inorganic compound evaporated layer 2 of a transparent polymeric base material 1, and the a thermoplastic resin layer 4 is laminated thereon. The ancillary coated film layer 3 is formed of a coating agent consisting mainly of a solution, or a mixed liquid of water/alcohol containing a water soluble polymer and at least one of (a) a king or more of metallic alcoxide and its hydrolyzed substance or stannic chloride. The inorganic compound evaporated layer 2 is made up of an oxide of aluminum, titanium, zirconium, tin, or the like, and a monomer of nitride and fluoride, or a composite thereof, and as a water soluble polymer, polyvinyl alcohol has a superior gas barrier property in particular. In addition, as metallic alcoxide, tetraethoxysilane is preferable particularly.