Accumulator head used in the formation of a multi-layer parison
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United States of America Patent
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Oct 27, 1981
Grant Date -
N/A
app pub date -
Jun 30, 1980
filing date -
Jun 30, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An accumulator head is described as having an annular accumulation 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 accumulation chamber with a slug of material.
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