METHOD AND DEVICE FOR FORMING CONTAINERS WITH PRESSURE DIFFERENTIAL CONTROL

摘要

The present invention relates to a method and to a device for forming a container (2), in a mold (6) that has a wall (7) forming a recess (9), from an intermediate container (3) that includes at least one lateral outgrowth (4) projecting outside the container, said method including: a boxing operation that consists of turning over the lateral outgrowth (4) by means of an insert (13) that is movably mounted relative to the mold (6) between a retracted position, in which the insert is stowed in a cavity (15) formed in the wall (7), and a released position, in which the insert (13) projects outwards relative to the wall (7) to form, by turning over, a hollow recess (5) that projects inside the container (2); an operation for controlling, during the boxing operation, a pressure differential (?P) between the inside of the intermediate container (3) and the inside of the cavity (15), and between the intermediate container (3) and the insert (15).