Coinjection molding of decorative preforms and containers produced from such preforms
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United States of America Patent
Stats
-
Jan 21, 1997
Grant Date -
N/A
app pub date -
Dec 14, 1995
filing date -
Dec 14, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for injection molding a multi-colored article in an injection mold, in which a) a desired initial quantity of a first-colored material is metered to a first desired portion of the cavity; b) a desired quantity of a second-colored material is supplied to the cavity, contiguously with the first-colored material, and is metered to a second desired portion of the cavity. The location of the first and second desired portions within in the cavity being controlled by providing the first and second-colored materials with appropriate melt viscosities and controlling the temperature and rate of supply of the first and second-colored materials. A multi-colored preform formed by the process that is suitable for blow molding a multi-colored container, and a multi-colored container blow molded from such a preform are also provided.
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Cited Art Landscape
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