Abstract: A one-piece mold element (3, 7) for a mold (1) for manufacturing containers from blanks of plastic material by blow molding or stretch blow molding. The mold element (3, 7) includes a one-piece molding wall (4, 8) having a raised molding surface (5, 9) bearing the imprint of at least one portion of a container, the molding wall (4, 8) having at least one decompression vent (20) extending therethrough, the hole leading, via an inner opening (21), onto the molding surface (9), which is provided in the form of a slot.

Abstract: A one-piece mold bottom (7) for a mold (1) for manufacturing containers, includes a molding wall (8) having a raised molding surface (9) bearing the imprint of at least one portion of a container bottom. The mold bottom (7) includes a cavity (27) integrally formed with the mold bottom (7), defined by a surface casing (29) defined entirely by the mold bottom (7) and including an inner surface (31) of the molding wall (8), opposite the molding surface (9) and matching the raised pattern thereof, and a rear surface (32, 33) opposite the inner surface (31). The mold bottom (7) is provided with at least one pair of openings (35; 37) leading into the cavity (27) for circulating a heat-transfer fluid inside the cavity.

Abstract: A one-piece mould element (3, 7) for a mould (1) for manufacturing containers from blanks of plastic material by blow moulding or stretch blow moulding. The mould element (3, 7) includes a one-piece moulding wall (4, 8) having a raised moulding surface (5, 9) bearing the imprint of at least one portion of a container, the moulding wall (4, 8) having at least one decompression vent (20) extending therethrough, the hole leading, via an inner opening (21), onto the moulding surface (9), which is provided in the form of a slot.

Abstract: A one-piece mould bottom (7) for a mould (1) for manufacturing containers, includes a moulding wall (8) having a raised moulding surface (9) bearing the imprint of at least one portion of a container bottom. The mould bottom (7) includes a cavity (27) integrally formed with the mould bottom (7), defined by a surface casing (29) defined entirely by the mould bottom (7) and including an inner surface (31) of the moulding wall (8), opposite the moulding surface (9) and matching the raised pattern thereof, and a rear surface (32, 33) opposite the inner surface (31). The mould bottom (7) is provided with at least one pair of openings (35; 37) leading into the cavity (27) for circulating a heat-transfer fluid inside the cavity.

Abstract: A forming method, in a mold fitted with a wall forming a cavity, of a container from an intermediate container including at least one lateral protrusion projecting toward the exterior of the container. The method includes a boxing operation of pushing back the lateral protrusion in order to form, by turning it around an articulation zone, a hollow reserve projecting toward the interior of the container and a local cooling operation, after turning the protrusion over, of sweeping a circulation fluid over the articulation zone.

Abstract: A forming method, in a mold provided with a wall forming a cavity, of a container from a blank, which includes a boxing operation of pushing back the material of the blank by an insert movably mounted with respect to the wall of the mold between a retracted position in which the insert is retracted into the wall, and a deployed position in which the insert protrudes with respect to the wall, in order to form on the container, by pushing back, a hollow reserve projecting toward the interior of the container. Additionally, a local pressurization operation is performed, after formation of the hollow reserve, of injecting a pressurized fluid between the insert and the hollow reserve.

Abstract: The support cooperates with the half-molds (2, 3) of a molding unit used to shape a container from thermoplastic material. This support comprises: a pedestal in the form of an actuating cylinder (11), the rod (12) of which is solidly connected to the mold base (1); and, between the rod (12) of the actuating cylinder (11) and the mold base (1), an assembly system (13) formed by a female part in the form of a nut (14) and of a male part in the form of a screw (15). The nut (14) is trapped at the end of the rod (12) of the actuating cylinder (11) and the screw (15) is associated directly or indirectly with the mold base (1). A system of shim(s) (40, 41) can be used to adjust the working stroke of the rod (12) of the actuating cylinder (11) as required.

Abstract: Device for forming containers from blanks made of plastic material, having a mold provided with a wall defining a cavity intended to receive the blank; a boxing insert mounted movably with respect to the mold between a retracted position in which the insert is retracted into the wall, and an extended position in which the insert projects from the wall toward the interior of the cavity; a plate, on which the insert is rigidly fixed; a support on which the plate is removably mounted; and a system for the quick attachment of the plate to the support.

Abstract: A forming method, in a mold fitted with a wall forming a cavity, of a container from an intermediate container including at least one lateral protrusion projecting toward the exterior of the container. The method includes a boxing operation of pushing the lateral protrusion by an insert movably mounted with respect to the mold between a retracted position in which the insert is retracted into a recess formed in the wall and a deployed position in which the insert protrudes with respect to the wall, in order to form, by overturning, a hollow reserve projecting toward the interior of the container. Also included is an operation to pressurize the intermediate container, including, prior to the boxing operation, injecting a fluid under pressure into the intermediate container; and a local pressurization operation, prior to the boxing operation, of injecting a fluid under pressure into the volume defined in said recess between the lateral protrusion and the insert.

Abstract: The support cooperates with the half-moulds (2, 3) of a moulding unit used to shape a container from thermoplastic material. This support comprises: a pedestal in the form of an actuating cylinder (11), the rod (12) of which is solidly connected to the mould base (1); and, between the rod (12) of the actuating cylinder (11) and the mould base (1), an assembly system (13) formed by a female part in the form of a nut (14) and of a male part in the form of a screw (15). The nut (14) is trapped at the end of the rod (12) of the actuating cylinder (11) and the screw (15) is associated directly or indirectly with the mould base (1). A system of shim(s) (40, 41) can be used to adjust the working stroke of the rod (12) of the actuating cylinder (11) as required.

Abstract: Mold (10) for a blow-molding machine, for molding thermoplastic containers, the mold (10) comprising several mold parts having centering features (36, 38, 50) and complementarily-shaped centering features (40, 42, 44), said centering features (36, 38, 50) and complementarily-shaped centering features (40, 42, 44) being capable of cooperating with one another, characterized in that at least a portion of at least one of the centering features (36, 38, 50) and complementarily-shaped centering features (40, 42, 44) is made or tin anti-friction composite material so as to avoid lubrication thereof.

Abstract: The mould top support (3) for shaping the bottom of a thermoplastic bottle by what is called the “boxed top” process comprises: a base (10) interposed between the said mould top (3) and a sliding bolster (11) which is guided on the frame (6) of the mould carrier unit, which base (10) is made in the form of a dual-acting cylinder actuator, the rod (14) of which supports said mould top (3). The base plate (17), which closes off the cylinder of the actuator is provided with a rapid assembly finger (18) on the bolster (11). This base plate (17) includes, around the finger (18), on the one hand, holes designed to allow the sealed passage of nozzles that deliver a heat-transfer fluid and demoulding air into the mould top (3) and, on the other hand, zones for the attachment of the feed nozzles for the chambers (21 and 22) of the cylinder actuator, which nozzles are all placed parallel to the axis x-x? of displacement of said mould top (3).

Abstract: The mould top support (3) for shaping the bottom of a thermoplastic bottle by what is called the “boxed top” process comprises: a base (10) interposed between the said mould top (3) and a sliding bolster (11) which is guided on the frame (6) of the mould carrier unit, which base (10) is made in the form of a dual-acting cylinder actuator, the rod (14) of which supports said mould top (3). The base plate (17), which closes off the cylinder of the actuator is provided with a rapid assembly finger (18) on the bolster (11). This base plate (17) includes, around the finger (18), on the one hand, holes designed to allow the sealed passage of nozzles that deliver a heat-transfer fluid and demoulding air into the mould top (3) and, on the other hand, zones for the attachment of the feed nozzles for the chambers (21 and 22) of the cylinder actuator, which nozzles are all placed parallel to the axis x-x? of displacement of said mould top (3).

Abstract: Device for forming containers from blanks made of plastic material, having a mold provided with a wall defining a cavity intended to receive the blank; a boxing insert mounted movably with respect to the mold between a retracted position in which the insert is retracted into the wall, and an extended position in which the insert projects from the wall toward the interior of the cavity; a plate, on which the insert is rigidly fixed; a support on which the plate is removably mounted; and a system for the quick attachment of the plate to the support.

Abstract: A forming method, in a mold fitted with a wall forming a cavity, of a container from an intermediate container including at least one lateral protrusion projecting toward the exterior of the container. The method includes a boxing operation of pushing back the lateral protrusion in order to form, by turning it around an articulation zone, a hollow reserve projecting toward the interior of the container and a local cooling operation, after turning the protrusion over, of sweeping a circulation fluid over the articulation zone.

Abstract: A forming method, in a mold provided with a wall forming a cavity, of a container from a blank, which includes a boxing operation of pushing back the material of the blank by an insert movably mounted with respect to the wall of the mold between a retracted position in which the insert is retracted into the wall, and a deployed position in which the insert protrudes with respect to the wall, in order to form on the container, by pushing back, a hollow reserve projecting toward the interior of the container. Additionally, a local pressurization operation is performed, after formation of the hollow reserve, of injecting a pressurized fluid between the insert and the hollow reserve.

Abstract: A forming method, in a mold fitted with a wall forming a cavity, of a container from an intermediate container including at least one lateral protrusion projecting toward the exterior of the container. The method includes a boxing operation of pushing the lateral protrusion by an insert movably mounted with respect to the mold between a retracted position in which the insert is retracted into a recess formed in the wall and a deployed position in which the insert protrudes with respect to the wall, in order to form, by overturning, a hollow reserve projecting toward the interior of the container. Also included is an operation to pressurize the intermediate container, including, prior to the boxing operation, injecting a fluid under pressure into the intermediate container; and a local pressurization operation, prior to the boxing operation, of injecting a fluid under pressure into the volume defined in said recess between the lateral protrusion and the insert.

Abstract: The support (6) for the mould end-wall (2) comprises at least one part made of an insulating material, said part being interposed between said end-wall (2) of the mould and the mounting plate (5) in order to produce, in particular, a thermal bridge break between said end-wall and said mounting plate. This part may comprise, depending on the case, the cover (7) of the end-wall (2) or the spacer (20?) which is interposed between said cover and the device, enabling the support (6) to be assembled on the mounting plate (5). The insulating part of said support (6) also guarantees better heat exchange at the end-wall (2) of the mould with the heat-transfer fluid. The cover (7) of the end-wall (2) may include a lock ring (15) that cooperates with the segments (13) placed on the half-moulds (1). This lock ring (15) may also he made of an insulating plastic.

Abstract: Mould (10) for a blow-moulding machine, for moulding thermoplastic containers, the mould (10) comprising several mould parts having centring features (36, 38, 50) and complementarily-shaped centring features (40, 42, 44), said centring features (36, 38, 50) and complementarily-shaped centring lecture (40, 42, 44) being capable of cooperating with one another, characterized in that at least a portion of at least one of the centring features (36, 38, 50) and complementarily-shaped centring features (40, 42, 44) is made or tin anti-friction composite material so as to avoid lubrication thereof.