| 摘要 |
PROBLEM TO BE SOLVED: To obtain excellent impact resistance and sealability by integrally laminating and molding an outer layer composed of a heatresistant polyamide resin layer, an intermediate layer composed of an adhesive resin layer and an inner layer composed of a mixture consisting of a specific amt. of a random copolymer polypropylene resin and a polypropylene type soft resin. SOLUTION: 'Nylon' as a heat-resistant polyamide resin layer being an outer layer, a maleic anhydride grafted acid modified random copolymer polypropylene type resin as an interlaminar adhesive resin layer and a mixture of 90wt.% of random copolymer polypropylene type resin and 10wt.% of a polypropylene type soft resin as an inner layer are melted and extruded from respective single-screw extruders and the molten resins of respective layers are allowed to meet with each other in a feed block and subjected to extrusion molding through a T-die and the thicknesses of respective layers are successively set to 25,10 and 40μm from the outer layer. |
