Apparatus for molding plastic products
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United States of America Patent
Stats
-
Jul 21, 1987
Issued Date -
N/A
app pub date -
Sep 23, 1985
filing date -
May 18, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus for molding plastic products of virtually any complicated configuration is provided. When a parison is extruded out of a nozzle, a separating agent, preferably oil, is supplied into the parison as a lubricant. Since a thin film of the separating agent is formed on the inside surface of the parison, portions of the inside surface do not stick together even if they are brought into contact from some reasons. This insures to mold a plastic product of a very complex configuration. Use of a separating agent also allows to form sheet-type products by dividing the parison into several sections as desired. This is a very efficient way of forming sheet-type products since at least two may be formed at the same time.
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Cited Art Landscape
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