Sidel, Inc.

Gerard Emmer

Paul La Barre

Alain Evrard

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

The invention relates to the thermal treatment of the body (2) of a preform (1) or of an intermediate container made of a thermoplastic material during a process for manufacture of the container, such as a flask or bottle, in particular by blowing or stretching-blowing, the entirety of the body (2) of the preform being heated to a temperature greater than the softening temperature of the material, at least one longitudinal portion (13) of the body (2) of the preform in rotation on itself being heated to a temperature greater than that of the rest (14) of the body, thereby making it possible to produce a finished container incorporating a body having a complex shape.

Process for heat treatment of the body of a preform or of an

Method and device for selectively heating a container preform

Process and equipment for heat treatment of the body of a preform or of

Preforms are thermally treated in a continuous-run oven equipped with infrared lamps. The portions of the oven exposed to infrared radiation are cooled by an air flow, whose temperature is kept constant by mixing air at ambient temperature with hot air. The latter is obtained by recycling at least part of the cooling air flow, which becomes heated as it carries away excess heat. A recycling mechanism in the form of a plenum box 13 equipped with a pivotable shutter 16 for adjusting the proportions of recycled hot air and ambient temperature air makes it possible to keep the temperature of the cooling air constant.

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Le Havre, France

Gerard Emmer