Accumulator head used in the formation of a multi-layer parison

Details Accumulator head used in the formation of a multi-layer parison Accumulator head used in the formation of a multi-layer parison

B - Operations, Transporting

29

C

18/727

B29C 47/20 (2006.01) B29C 47/06 (2006.01)

Patent

CA 1150023

AN ACCUMULATOR HEAD USED IN THE FORMATION OF A MULTI-LAYER PARISON Abstract of the Disclosure An accumulator head is described as having an annular ac- cumulation chamber, an annular ring-piston movable axially in the chamber for forcing resinous material from the chamber through an annular discharge passageway leading from the chamber to an annular discharge orifice which, for example, is in communication with a blow mold. An annular inlet is provided in the discharge passageway between the chamber and orifice as a means whereby resinous material is moved into the discharge passageway to add an outer laminate to material flowing through the discharge passageway, or as a means of filling the accumu- lation chamber with a slug of material.

378390

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