| 摘要 |
PURPOSE:The title film having improved gas barrier properties, moistureproofness, resistance to pinhole formation and flexing, comprising a polyolefin resin layer on the inner surface of a tubular polyamide resin layer and a metallized resin layer on the outer surface with a laminate material laid between them. CONSTITUTION:The polyethylene resin layer 2 is formed on the inner surface of the polyamide resin layer 1; the polyethylene resin layer 3 as a laminate material, on the outer surface. The tubular three-layer composite film is a film A easily obtained by coextrusion, and the resin layers B, deposited with the metal 6, are formed on the resin layers 5 with the metal 6 inside via the polyethylene resin layers 4 as a laminate material between them. A resin selected from polyester, polypropylene, and polyamide resins is used as the resin layer 5. |
