| 摘要 |
PURPOSE:To impart beautiful appearance having no wavy patterns and to enhance gas barrier properties by molding a multilayered structure having three or more layers consisting of a polyolefinic resin layer having a specific melt index value and the like. CONSTITUTION:A multilayered structure having three or more layers consisting of a polyolefinic resin layer P, an ethylene/vinyl acetate copolymer layer E and a mixture layer M is molded. The layer M is composed of a mixture of a recovered substance such as molding loss or scrap at the time of the production of the multilayered structure and a resin B same to the resin of the layer P in kind and having a melt index different from that of the resin of the layer P. When the melt indexes of the resins of the layers P, E, B are set to Pm, Em and Bm, the relations of Bm > Em at the time of Em < Pm and Bm < Em at the time of Pm > Em are provided between the melt indexes of the respective resins and the respective melt indexes are displayed as values (g/10 min) measured at the same temp. of 190-230 deg.C. |
