Sidel, Inc.

Alain Evrard

Gerard Emmer

Gerard Denis

Gerard Doudement

Frédéric Lecomte

Nasser Takhedmit

An oven for heating moving thermoplastic blanks (preforms, intermediate containers), which includes conveying devices for supporting and moving the blanks sequentially while rotating each of them about its own axis. A heating device is arranged laterally to the conveying device for heating the moving blank bodies, and the conveying device includes at least two parallel conveying branches, proximate each other and having opposite conveying directions, the two branches being traveled along one after the other by the blanks. The heating device is arranged between the two conveying branches so as to heat simultaneously on both sides of the blanks moving in opposite directions respectively on the two branches.

Oven for heating moving thermoplastic material container blanks

An installation for blow molding thermoplastic polymer containers, including a blowing mold consisting of two portions capable of being assembled and a blowing device with a bell-type nozzle pressed in a sealed manner against a front mold surface mounted on the neck of a blank to be blow molded; a leaking device with a relatively large cross-section which extends from one contact surface of at least one mold portion up to the outside of the mold beyond the support of the bell of the nozzle on the surface. The high pressure blow molding fluid which can penetrate through an interstice between the mold portions which tend to be spaced apart from each other is at least mostly evacuated outside.

Installation for blow molding thermoplastic polymer containers

A cam-operated guiding device for controlling a related movement of a member which is moreover continuously displaced, the device including two mutually transversely offset parallel cams with which co-operate respectively two coaxial rollers for bilaterally guiding said member. One of the cams is mounted via elastically deformable members designed to allow an elastic displacement of the cam relative to the other cam.

Cam-type guiding device and molding installation using same

The invention relates to a machine for blow-molding thermoplastic products. This type of machine has a molding unit comprising two mobile supports ( ), which are hinged in relation to each other and which are controlled by a mechanism comprising a traveling slide ( ), between an open position and a closed position. Each support ( ) is connected to the slide ( ) by at least one associated connecting link ( ). The inventive blow-molding machine is characterized in that in its closed position, the main axes of the connecting links ( ) are oriented in the same direction, perpendicular to the hinge axis (A ), in such a way that the control mechanism can cause the molding unit to be locked in this closed position.

Blow-molding machine comprising a closing and locking mechanism

A machine for making thermoplastic containers by stretching and blowing a preform, comprising several molding stations mounted on a rotary carrousel, each station being provided with at least a stretch rod whereof the sliding movement is controlled along an axis (An). The stretch rod is controlled by a magnetic device having at least a fixed magnetic guide arranged about the axis of the carrousel and a slide which is integral with the stretch rod and bears at least a magnetic shoe and the shoe and the guide co-operate by magnetic coupling such that the guide imposes a predetermined axial movement on the slide.

Rotary stretch blow moulding machine comprising a magnetically controlled stretch rod

To blow plastic hollow bodies, each mold ( ) has its respective compression chamber ( ) connected to it, constituted by a cylinder ( )-piston ( ) assembly; pressure is initialized in the chamber; the fluid is compressed in the chamber; the chamber is connected ( ) with the blank ( ) when the piston position attains a predetermined position and chamber volume continues to be reduced to complete the blowing. The invention can be applied in particular to the blowing of small-volume hollow bodies.

Method for making, by blow moulding, plastic hollow bodies, device and installation therefor

Method and device for selectively heating a container preform

Preform support device

Apparatus for loading necked containers on a conveyor chain 3, 9 equipped with individual neck-gripping mandrels 4, 16, the mandrels and the containers being spaced apart by the same pitch P. The conveyor chain turns around an axis 11 such that the mandrels describe an arc-shaped path within the loading area. A rotating disk 1 for picking up the arriving containers is fitted with recesses 5 for individually housing the containers spaced apart by the pitch P, the disk being located beneath the conveyor chain and rotating in the same direction thereas around an axis 6 parallel to the axis 11 but offset therefrom. The diameter of the disk and the respective positions of the axes is such that the circular path of the recesses intersects the arc-shaped path of the mandrels at an angle of about 3.degree..

Apparatus for loading containers on a conveyor

A continuous-feed thermal treatment unit for the manufacture of PET containers includes, in succession, a recovery oven (25) and a crystallization oven (42) having respective heater plates (27, 44) for emitting medium-wavelength infrared radiation to heat the bodies of incoming, rotating, bidirectionally stretched, oversize containers to a temperature of 160.degree.-2400.degree.-C. The crystallization oven also includes short-wavelength infrared tubes (47) disposed along the path of the container necks, whose radiation penetrates the necks and heats support mandrels (18) inserted therein to transport the containers. The heated bodies shrink and become at least partially crystallized during their conveyance through the ovens, while the necks undergo spherulitic crystallization. The mandrels are carried at the outer ends of radial arms (15) mounted on links (12) joined by pivots (13) to form an endless conveyor chain (9) led over a portion of a drive wheel (10), during which the spacing between adjacent containers is increased to accommodate their relatively large incoming dimensions. As the conveyor chain and the containers transported thereby enter a straight run into the crystallization oven upon leaving the recovery oven, wherein they have contracted, the arms (15) return to a parallel orientation which attendantly decreases the spacing between the containers. The transported containers thus form a continuous curtain during their conveyance, which increases the thermal/energy efficiency of the treatment unit.

Thermal treatment unit for the manufacture of pet containers

Equipment for the manufacture of hollow plastic bottles from preforms (16) having a closed end and an open end forming a neck, includes a conveyor equipped with supports (11) for the preforms which are driven in a predetermined path (T). The supports are arranged one after the other and are capable of pivoting over a given angular range when acted upon by a cam guide and follower arrangement (17, 18) such that the preforms may be inverted from their initial position. The cam guide may be an elongated, stationary rod (17) in the shape of a spiral section coiled around the path (T) followed by the swivel pins (13) of the supports, having a length determined according to the pitch of the spiral and to the angular swing amplitude required for the preforms. Follower rollers (18) are mounted on each support and flank the rod (17) such that, during the displacement of the supports along their path, the supports and preforms carried thereby are swung through 180.degree..

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Le Havre, France

Alain Evrard