Abstract: A thermoplastic container, such as a bottle, obtained by extrusion-blow or injection-blow molding and having a petaloid base (6, 7). The base includes a convex wall (7) hemispherical in shape; the wall (7) is linked to the wall (2) forming the container body by a marginal zone (8) with a curve (R1, R2). Members (6) originate from the hemispherical wall (7) and are separated in pairs by a part thereof; the top end of each member is directly linked to the wall (2) forming the body.

Abstract: The invention concerns a method and a device for sterilising hollow bodies, such as containers, container preforms, tubes and various conduits. The invention is characterised in that it consists in guiding (15) a vaporisable sterilising agent over the walls of the hollow body (9), using guide means (7; 13) enabling the agent to be entirely deposited over the surfaces to be sterilised.

Abstract: An installation for the packaging of a product in containers closed with a stopper, including in particular a filling machine (1), a stopping machine (3) and, upstream of this, a device (6) for the dynamic storage of stoppers suitable to drive the stoppers continuously and with a pre-specified pitch, the number of stoppers present simultaneously in the device (6) being at least equal to that of the containers present in a pre-specified part (7) of the installation, means (8) for the control of the supply of stoppers being provided upstream of the device (6) to control a device (10) for supplying containers located upstream of the pre-specified part (7); thus, for every container engaged in the pre-specified part (7) corresponds a stopper present in the device (6) supplying the stopping machine (3) and, in the event of an incident in the supply of stoppers upstream of the device (6), the supply of containers from the pre-specified part (7) is controlled (9, 10) while maintaining the operation of the terminal p

Abstract: An installation for the packaging of a product in containers closed with a stopper, including in particular a filling machine (1), a stopping machine (3) and, upstream of this, a device (6) for the dynamic storage of stoppers suitable to drive the stoppers continuously and with a pre-specified pitch, the number of stoppers present simultaneously in the device (6) being at least equal to that of the containers present in a pre-specified part (7) of the installation, means (8) for the control of the supply of stoppers being provided upstream of the device (6) to control a device (10) for supplying containers located upstream of the pre-specified part (7); thus, for every container engaged in the pre-specified part (7) corresponds a stopper present in the device (6) supplying the stopping machine (3) and, in the event of an incident in the supply of stoppers upstream of the device (6), the supply of containers from the pre-specified part (7) is controlled (9, 10) while maintaining the operation of the terminal p

Abstract: The invention concerns a method and a device for drying a hollow body (2), such as containers, container preforms, tubes or various conduits. The invention is characterized in that it consists in guiding (9) a drying agent (heat, dessicant, dry air . . . ) towards the assembly of surfaces to be dried, using means enabling said agent to pass entirely over all said surfaces.

Abstract: A preform (9) made of thermoplastic material and including a body (11) provided with an at least partially longitudinally extending inner partition (10). The preform is used for molding and particularly blow molding or stretch-blow molding a container with a body having opposed portions defining hollow recesses with inwardly-directed convex surfaces, said portions being spaced apart by said inner partition. In a straight cross-sectional view, the body (11) has a non-circular outline with two opposed portions (a, b) separated by a minimum distance (d1) that is smaller than the distances between the other pairs of opposed portions of said outline. The inner partition (10) extends between said two opposed portions (a, b), and said distance (d1) is such that, relative to the periphery of the body (11) of the preform, during molding, the inner partition (10) is transversely stretched at a rate equal to that at which the body (11) is transversely or peripherally stretched.

Abstract: A screw intended to be set in place and removed rapidly. The screw is characterized in that the threads are intended to take two positions: a first position wherein they project at the periphery of a body (1) and a second position wherein they are retracted into the thickness of the body (1). The screw further comprises a displacement member (27) intended to displace the threads from one position to the other and a device for locking the threads (29, 36, 27, 38) in the extended position.

Abstract: The invention concerns a machine for manufacture of containers (13), such as bottles, pots, and all other types of hollow bodies, by heat treating, then blow-molding, plastic preforms (1). The machine includes at least two wallet-type molds (41, 44) positioned on the periphery of a circular conveyor. Each mold incorporates at least two mold cavities. The machine includes a preform heat-treatment apparatus in which the pitch (P1) between the longitudinal axes of two successive preforms is smaller than the pitch (P2) between the longitudinal axes of two adjacent cavities belonging to the same mold, and means (5A) for modifying the pitch of the preforms between the drive mechanism and a mold.

Abstract: A machine for blow moulding or stretch-blow moulding a preform (5) in a mould (6), wherein an O-ring seal (20) is provided between the preform and the blow moulding nozzle (1). The seal is mounted on the nozzle and can be moved between two positions, i.e., a first position in which it is prevented from contacting the preform during the insertion of the nozzle into the preform, and a second position in which it forms the seal therebetween. Members (18, 21, 26, 27) are provided for moving the seal from the first to the second positions once the nozzle has been fully positioned within the preform.

Abstract: A machine manufactures containers such as bottles, pots, or other hollow bodies by thermal conditioning and blow molding of plastic preforms. The machine has two portfolio molds on the periphery of a carousel, and each has at least two molding cavities. The machine also has a device for steering and for holding the preforms on a path between thermal conditioners. The preforms are separated at a pitch that is less than that of the molding cavities. The machine features a device for changing the pitch of the preforms between the steering device and the mold.