Abstract: The inventive method for producing a metal-plastic or biplastic article, mainly a bottle capsule, involves placing a metal or plastic blank of an article outer shell into a mould and introducing a die into said blank in such a way that a gap clearance is formed between the die surface and the inner surface of the blank. Then, a melt plastic material is introduced into thus formed gap clearance so that it is fully filled and the blank is pressed against the mould inner surface. Furthermore, simultaneously, the metal or plastic outer shell of the article is formed, an internal plastic element is produced, placed in the thus formed outer shell of the article and is fixed therein.