Method and apparatus for making plastic containers having decreased gas permeability
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United States of America Patent
Stats
-
May 26, 1987
Grant Date -
N/A
app pub date -
Oct 29, 1985
filing date -
Oct 29, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus for producing open ended plastic containers having decreased gas permeability that includes a vacuum chamber and a pump for regulating the pressure therein, an ionization source mounted in the chamber proximate the container's open end and a container holder located in the chamber. The container holder has a hole aligned with the open end and may include a shield that encompasses the exterior of the container and may include a magnet setting up a magnetic field on the exterior of the shield. In the method, a container is placed on the container holder in the chamber with the open end and hole aligned and with the shield and magnet located as described above. The coating material is vaporized and ionized so that the ionized material is deposited on the interior wall of the container.
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