Container-Treatment Method Comprising Vacuum Pumping Phases, and Machine for Implementing Same

摘要

A container-treatment method, of the type in which the container ( 12 ) is disposed inside a chamber ( 16 ) which defines a cavity ( 18 ) outside the container ( 12 ) and which is connected to a vacuum pumping circuit ( 50 ), the interior of the container ( 12 ) being connected to the pumping circuit ( 50 ). The method includes a preliminary pumping step (E 1 ) which is followed by a treatment step (E 2 ). The preliminary step (E 1 ) includes the following successive phases, namely: an external pumping phase (P 1 ) which produces a drop in the pressure inside the cavity ( 18 ) only; and an internal pumping phase (P 2 ) which produces a drop in the pressure inside the container ( 12 ) only. A machine used to implement the method is also disclosed.