Apparatus for blow-molding plastic containers

An apparatus for blow-molding plastic containers, the apparatus comprises:

• at least one blow-molding station which defines at least one molding cavity which extends around a main axis of extension, said blow-molding station comprising at least two lateral bodies and a bottom for the at least one molding cavity that is defined by said blow-molding station, at least one of said at least two lateral bodies and said bottom being configured to move on command to allow a transition of said molding station from an open condition, wherein a feeding of a preform or of preforms and an unloading of a blow-molded container are possible, and a closed condition, wherein the blow-molding of the preform is performed in order to obtain said blow-molded container, said bottom defining a recessed central portion, which is arranged around said main axis of extension, and a lateral containment portion, wherein said recessed central portion comprises an aperture and wherein said bottom comprises a central abutment body which defines a head portion which is arranged inside said molding cavity, said central abutment body being adjustable in position through said aperture relative to the recessed central portion, by an adjustment component, along an adjustment direction that is substantially parallel to said main axis of extension in order to vary a distance between said head portion of the central abutment body and the recessed central portion of said bottom, wherein said recessed central portion disposed around the aperture is flat and wherein said head portion of the central abutment body comprises a seat having a concavity directed toward said molding cavity, the seat being disposed below the recessed central portion at at least one position of the central abutment body.