Process for molding the base of a glass vessel used in production of test tubes comprises molding the base using a stamp, and inserting a gas cushion between the molded surface of the stamp and the base of the glass vessel during pressing

Process for molding the base of a glass vessel comprises: molding the base using a stamp (3); and inserting a gas cushion between the molded surface (3.1.1) of the stamp and the base of the glass vessel during pressing An independent claim is also included for a device for molding the base of a glass vessel comprising a stamp and a device for forming a gas cushion between the molded surface of the stamp and the base of the glass vessel. The molded surface is formed as a cone or truncated cone, a universal ball joint or recess or protrusion. The invention relates to a method for moulding the base of a glass container. According to the invention, said method comprises the following steps: the base is subjected, in a heated, malleable state to the moulding pressure of a die; a cushion of gas is introduced, prior to and/or during the pressure, between the moulding surface of the die and the base of the glass container. Die Erfindung betrifft ein Verfahren zum Ausformen des Bodens eines Glasgefäßes. DOLLAR A Gemäß der Erfindung weist dieses Verfahren die folgenden Verfahrensschritte auf: DOLLAR A - der Boden wird im warmverformbaren Zustand dem Formdruck eines Stempels frei ausgesetzt; DOLLAR A - zwischen der Formfläche des Stempels und dem Boden des Glasgefäßes wird vor dem Andrücken und/oder während des Andrückens ein Gaspolster eingebracht.