Blow molding and compression molding of an article
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United States of America Patent
Stats
-
Jul 30, 1991
Grant Date -
N/A
app pub date -
May 4, 1990
filing date -
May 4, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A molding apparatus is provided which is operated to mold an article having a hollow blow molded portion and a substantially solid compression molded portion. A mold is provided which has defined therein at least a first cavity portion and a second cavity portion. A parison is positioned within the mold and blow gas is injected into the interior of the parison to inflate the parison within each of the cavity portions. A compression member is then moved from a retracted position within a recess in the mold to an extended position outside of such recess. The compression member presses a first portion of the parison against the mold interior surface which defines the first cavity portion so as to compression mold a first portion of the parison. Inflation of a second portion of the parison in the second cavity portion accomplishes blow molding of such second parison portion.
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