The invention relates to a method for producing a container which is made of a plastic material and comprises the edge clamping of a flat and flexible part (5) forming a curved surface on the internal face of a hollow body (1). The inventive method consists in bringing the edge of the part (5) into contact with the internal face of the hollow body, in applying a pushing or tensile force on the part in a direction perpendicular to the surface thereof in such a way that radial forces are induced into the part, thereby bringing the edge of the part (5) together with the internal face of the hollow body.