Parison extrusion head

Details Parison extrusion head Parison extrusion head

B - Operations, Transporting

29

C

18/738

B29C 47/28 (2006.01) B29C 47/20 (2006.01)

Patent

CA 1098673

Docket 8218-IR-PL PARISON EXTRUSION HEAD ABSTRACT OF THE DISCLOSURE This is an extrusion head for extruding a parison to be blow molded. A shooting mandrel is longitudinally movable within a plastic melt accumulator chamber. After a "shot", the shooting mandrel is in the up position. The plastic melt fed to the plastic accumulating chamber forces the shooting mandrel to the down position as the plastic accumulating chamber is filled. The parison is formed by moving the shoot- ing mandrel upwardly to the up position. The plastic flows around the shooting mandrel as it flows from the accumulating chamber and out of the extrusion head.

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