Abstract: A method of analyzing preforms for potential bursting during forming and filling by injecting an incompressible liquid to shape the successive heating preforms into containers and fill the containers. The method defines at least one stress parameter correlated to the internal stress of the thermoplastic material of the preform and defines a range of acceptable values for the stress parameter. The method includes analyzing each successive initial preform and each successive heated preform, determining a value of the stress parameter, comparing the determined value to a range of acceptable values, and emitting an output signal when the determined value is outside the acceptable range of values.

Abstract: A molding unit for the manufacturing of a container from a blank made of plastic material includes: a mold equipped with a wall and a movable insert; and at least one boxing system including a cylinder that is integral with the insert. The boxing system includes: at least one solenoid valve mounted on a primary fluid circuit, with this solenoid valve including a fluid outlet connected to a primary chamber and that defines a variable passage section based on an electric control signal applied to the solenoid valve; and a processing unit connected to the solenoid valve and programmed to vary the electric control signal applied to the latter.

Abstract: An installation (26) for thermally conditioning thermoplastic preforms (14) that are intended to be formed, the installation (26) including:—a thermal-conditioning zone (40) divided vertically into a heating first part (42) which is intended to house a body (16) of the preform (14) and a cooling second part (44) which is intended to house a neck (20) of the preform (14);—a device (62) for cooling a portion of the preform (14) by producing a stream of gas passing through the thermal-conditioning zone (40); characterized in that the cooling device (62) produces a blade (63) of gas blown with laminar flow through an axial outlet slit (72).

Abstract: A container made of plastic material, provided with a body and a bottom extending at a lower end of the body, the bottom including an annular seat extending substantially in the prolongation of the body and defining a seating plane; a concave arch that extends from a zone near the seat to a central zone, the arch including a series of stiffeners that extend radially from the central zone to the seat.

Abstract: 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.

Abstract: Disclosed is a molding unit for the forming of a container provided with a hollow recess toward the interior of the container, including: a mold provided with a lateral wall defining a cavity having the impression of at least one portion of the container, provided with a housing formed hollow in a protrusion forming a projection toward the interior of the cavity and opening into the cavity; and a boxing device having an insert mounted in translation relative to the lateral wall between a retracted position in which the insert is retracted in the housing, and a deployed position in which the insert projects outside of the housing, a projection whose transverse extension is less than or equal to 85% of the cumulative transverse extension of the protrusion and of the insert.

Abstract: Molding unit (1) for the forming of a container (2) provided with a hollow recess (3), comprising: a mold (5) provided with a lateral wall (6) defining a cavity (7) and provided with a pocket (9) that comes out into the cavity (7); a boxing device (11) comprising: an insert (12) mounted in translation in the pocket (9) relative to the lateral wall (6) and provided with at least one passage (81) opening out; an actuator (16) integral with the insert (12) and provided with a piston (17) mounted in a chamber (22) defined in the wall (6) of the mold (5), the piston (17) subdividing the chamber (22) into a rear half-chamber (22A) in communication with a primary fluid duct (46), and a front half-chamber (22B) in communication, on the one hand, with a secondary fluid duct (50) and, on the other hand, with the pocket (9).

Abstract: Disclosed is a method for manufacturing a container by stretch blow molding starting from a preform made of plastic material within a forming unit that includes: a mold that is provided with a side wall and a mold bottom having the impression, jointly, of the container; and a stretching rod that is mounted to move in translation in relation to the mold between an upper position and a lower position. The method includes: a pre-blow-molding phase during which a fluid with a pre-blow-molding pressure is injected into the preform, and the rod is moved from its upper position to its lower position with a maximum travel speed of greater than or equal to 2.5 m/s.

Abstract: Disclosed is a method for manufacturing a container from a blank in a mold provided with a movable insert, wherein the method includes the following phases: pre-blowing; blow molding; boxing; and the following operations: measuring the prevailing pressure in the blank in real-time and storing the measurement in a memory; measuring the position of the insert in real-time and storing the measurement in a memory; detecting a time tS2 indicating the actual start of the blowing phase and moment tB2 indicating the actual start of movement of the insert and storing same in a memory; calculating T1=tS2?tB2; comparing T1 with a predetermined non-zero reference T1ref, as long as T1 is different from T1ref, and delaying the start of the boxing phase.

Abstract: A method for producing a container having a threaded wide neck, includes steps of: heating a preform having a polyester body, on which there is mounted a polyolefin sleeve positioned next to an area of the body corresponding to the wide neck of the container; introducing the heated preform, with the sleeve, into a mould having the footprint of the container, including a threaded area having the footprint of the wide neck; injecting a pressurised fluid into the preform in order to form a blank of the container including a lower portion including the wide neck with a thread formed in the sleeve and an upper portion above the wide neck; separating the upper portion from the lower portion that thus forms the container.

Abstract: Method of heating a blank (2) of plastic material for the manufacture of a hollow body by forming from the blank (2), which comprises the operations consisting of: inserting the blank (2) into an oven (7) provided with sources (9) of monochromatic or pseudo-monochromatic electromagnetic radiation emitting in the infrared range; exposing the blank (2) to the radiation from the sources (9), adjusted to a predetermined emission power for a predetermined exposure time; measuring a temperature on an outer wall (16) of the blank (2); Characterized in that it comprises an operation consisting of: adjusting the exposure time and/or the emission power so that said temperature at an exit from the oven (2) [sic: (7)], does not fall between Tg and 1.8·Tg, where Tg is the glass transition temperature of the material.

Abstract: Disclosed is a mold for the manufacture, from a blank, of a container having a body and a base provided with a peripheral seat. The mold includes: a wall bearing the impression of the body of the container and provided with an opening; a mold base which is movable relative to the wall between an extended position and a retracted position; the mold base having a peripheral surface which corresponds to a join between the seat and the base of the container and terminates in an edge which is raised with respect to the seat surface. In the extended position of the mold base, the edge extends vertically perpendicular to the opening and, in the retracted position of the mold base, the edge extends near the opening.

Abstract: Container (1), obtained by blow molding or stretch blow molding of a blank made of plastic material, which comprises a body (2), a shoulder (3) in the extension of the body (2) at an upper end thereof, and a neck (4) in the extension of the shoulder (3), the shoulder (3) being articulated between two stable positions, namely a deployed position in which the shoulder (3) projects from the body (2), and a retracted position in which the shoulder (3) is at least partially retracted into the body (2), the shoulder (3) being articulated in order to be able to adopt, in addition to the deployed position and the retracted position, a third stable position, intermediate between the deployed position and the retracted position.

Abstract: Method for controlling a method for the manufacture of a container by stretch-blow-molding of a plastic preform (2) in a machine (1) including a mold (26), the preform (2) having a body (3), a neck (4) opening at one end of the body (3) and a bottom (5) closing the body (3) at another end thereof, the manufacturing method including the operations involving:—heating the preform to a predetermined temperature in a thermal conditioning oven (10);—introducing the preform (2) into the mold (26);—moving a stretching pin (28) so as to stretch the preform (2); this control method involving a step that consists in determining the position of impact (P0r) of the stretch pin (28), namely the position it occupies at the moment at which it reaches the bottom (5) of the preform (2) during its movement.

Abstract: 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.

Abstract: 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.

Abstract: A method of analyzing preforms for potential bursting during forming and filling by injecting an incompressible liquid to shape the successive heating preforms into containers and fill the containers. The method defines at least one stress parameter correlated to the internal stress of the thermoplastic material of the preform and defines a range of acceptable values for the stress parameter. The method includes analyzing each successive initial preform and each successive heated preform, determining a value of the stress parameter, comparing the determined value to a range of acceptable values, and emitting an output signal when the determined value is outside the acceptable range of values.

Abstract: The invention relates to a method of capping a hollow container, the container including a neck which defines an opening towards the interior of the container, the capping method including the following steps: placing a film over the entire edge of the opening in the container so as to cover the opening; deep drawing the film in the opening in the neck of the container with a die, such that the film forms a collar, a central region and a riser at the junction between the collar and the central region, the riser being in contact with the inner wall of the neck; and securing the deep drawn film to the neck, thus rendering the film integral with the body of the container.

Abstract: Method for forming a packaging (2) from a container (1) that has a body (5), a neck (8), and a bottom (6), the container (1) having a deformable zone (15) with an extended configuration in which the zone (15) projects toward the outside of the container (1), with a retracted configuration in which the zone (15) projects toward the inside of the container (1), with this method including the following operations: filling the container (1) with a hot product; closing in an airtight manner the thus filled container (1); measuring the temperature of the stoppered container (1); comparing the measured temperature to a preset threshold value; if the measured temperature is less than or equal to the threshold value, moving the deformable zone (15) back toward its retracted position.

Abstract: A machine for manufacturing containers from blanks of plastic material, which includes an oven furnished with a plurality of radiation sources for heating blanks as they travel through at a predetermined speed of travel and heating profile, and a programmed control center for modifying the speed of travel and heating profile based on a temperature measurement made on a blank leaving the oven, and a pressure measurement made in the blank during a subsequent blowing.