the invention relates to a method for manufacturing a plastic container , comprising the edge - clamping of a flat , flexible piece forming a curved surface over the inner face of a hollow body , characterized in that the following steps are performed : the edge of the piece is placed in contact with the inner face of the hollow body ; a thrust or tensile force is applied to the piece in a direction perpendicular to its surface such as to induce in the piece radial forces resulting in a bringing - together of the edge of the piece against the inner face of the hollow body .