A machine for shaping from a preform and filling with liquid successive containers. The machine includes forming stations comprising a main station and an elementary station. The machine further includes a series of elementary stations moving along a first closed loop and a series of main stations moving along a second closed loop. The first closed loop and the second closed loop including at least one common part wherein the main stations are coupled with the elementary stations and a distinct part wherein the main stations are separated from the elementary stations.

Disclosed is a method for parametrizing a facility for producing containers including: a mold having a movable mold bottom, a movable drawing rod and an electric machine coupled with the rod; from a configuration in which the rod is in a raised position and in the bottom in an extended position, operating the electric machine as a motor; assessing the resultant of the axial forces on the rod; when a variation is detected in the resultant of the forces, assigning an initial position to the rod; controlling the movement of the mold bottom towards the retracted position thereof; assigning to the rod the corresponding so-called final position of the rod; and calculating the difference between the final position and the initial position.

A molding unit (1) for blow molding a container from a parison, the container including a wall portion and a base, the molding unit (1) including: a mold sidewall (2) extending along a main axis (X) and having an inner molding surface (3) defining a counter print of the wall portion of the container, and an opening (8) at a lower end of the inner molding surface (3), a cylinder jacket (10) fixed to the mold sidewall (2) and extending axially below the opening (8); a movable mold base (14) having a cylindrical bracket (17) slidingly received within the cylinder jacket (10) and a body (15) axially protruding from the bracket (17), a wear ring (33) fixed to the mold base (14), the wear ring (33) including a cylindrical guiding bushing (34) interposed between the bracket (17) and the cylinder jacket (10).

Provided is an apparatus for deforming plastics parisons to form plastics containers, having a blow-molding device which is arranged at least indirectly on a main shaft which is pivotable about a pivot axis, which blow molding device has at least two mold supports, a base element and two blow mold parts, wherein the base element and the blow mold parts are suitable for forming a cavity within which the plastics parisons are deformable to form the plastic containers, and the base element is arranged on a base receptacle, and having a coupling device which couples an opening movement of the blow mold parts to a raising and lowering movement of the base part relative to the blow mold parts.

A mould (12) for producing, from a blank (3), a container (2) having a bottom (6) provided with a seat (8), the mould (12) including: a wall (14) delimiting a cavity (17) and, beyond the cavity (17), a hollow recess (21) opening into the cavity (17) via an opening (20); a mould bottom (16) that is movable relative to the wall (14), the bottom having an upper surface (27) defining a seat surface (28) having the footprint of the seat (8) of the container (2). In this mould: the wall (14) has a counterbore (24) that defines, at the top, the hollow recess (21) and that extends perpendicular to and around the opening (20), substantially parallel to the central axis (X); the upper surface (27) defines a peripheral face (30) that extends flush with the counterbore (24).

A molding unit (10) for forming a container made of thermoplastic material, includes: a mold bottom (16) that is movable between a low position, an intermediate boxing position and a high position; a carriage (24) that supports the mold bottom (16) and is mounted in a movable manner in a fixed holder (26); actuation elements for moving the carriage (24) into its intermediate boxing position; the actuation elements including a cylinder (32) that houses a piston (98) liable to push the mold bottom (16) through a boxing travel; characterized in that the mold bottom (16) is supported in a fixed manner by the carriage (24), the cylinder (32) being fixed with respect to the fixed holder (26). A method for employing the molding unit is also described.

A machine to shape from a preform and fill with liquid successive containers in successive molds. The machine defines a first closed loop and includes a plurality of holding devices adapted to hold a neck of a preform or of a container. The holding devices are distributed along the first closed loop and the machine further includes a conveyor adapted to convey the holding device along the first closed loop. The first closed loop including a forming area along which each holing device is integrated in a forming station. The first closed loop also including one straight portion extending substantially rectilinearly.

A method for producing a container (2) from a blank (3) in a mold (1) provided with a wall (4) and a mold bottom (8) that is movable relative to the wall (4) between a retracted position and a deployed position, the method including: a phase of introducing the blank (3) into the mold; a preblowing phase including the injection, into the blank (3), of a fluid pressurized to a so-called preblowing pressure, a blowing phase following the preblowing phase and including the injection, into the blank (3), of a fluid pressurized to a so-called blowing pressure greater than the preblowing pressure; a boxing phase including the displacement of the mold bottom (8) from the retracted position thereof to the deployed position thereof, initiated after the pressure in the blank (3) has reached the blowing pressure.

A method of manufacturing a container from a blank in a stretch blowing assembly equipped with a mold provided with a wall and a mold bottom axially movable between an extended position and a retracted position and a stretch unit having a rod axially movable with respect to the wall and a device for controlling the movement of the rod. The method involves a stretch blowing phase; a boxing phase during which the mold bottom, initially in the extended position, is moved towards its retracted position, the boxing phase having a retraction operation including controlling a movement of the rod in synchronization with the movement of the mold bottom, or releasing the rod to allow the free axial movement thereof.

Method of manufacturing a container from a blank of plastic material, within a mold provided with a wall defining a cavity with the impression of the container, and a mold bottom that is movable with respect to the wall between a retracted position and a deployed position in which it extends protruding into the interior of the cavity in order to form a hollow recess in the container. The method includes inserting the blank into the mold; a pre-blowing operation including injecting a fluid under pressure into the blank, at a pre-blowing pressure; a blowing operation including injecting a fluid under pressure into the blank at a blowing pressure that is greater than the pre-blowing pressure; and a boxing operation, initiated prior to the blowing operation, and including moving the movable mold bottom from its retracted position to its deployed position.