Method for manufacturing gas barrier thin film-coated plastic container
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United States of America Patent
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Nov 11, 2014
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app pub date -
Jun 25, 2009
filing date -
Apr 13, 2009
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Abstract
Disclosed herein is a method for producing a plastic container coated with a thin film that is excellent in gas barrier properties, film coloration and film adhesiveness without using an external electrode having a special shape while suppressing deposition of foreign matters such as carbon powders. The method for producing a gas barrier thin film-coated plastic container according to the present invention includes the steps of: housing a plastic container in an external electrode serving as a film-forming unit; placing an internal electrode serving as a raw material gas supply tube in an inside of the plastic container; exhausting gas from an inside of the external electrode by activating a vacuum pump; blowing a raw material gas into the inside of the plastic container under a reduced pressure; and forming a gas barrier thin film on an inner wall surface of the plastic container by generating plasma from the raw material gas, setting a power source frequency of a power source for plasma generation to supply power to the external electrode to be 5.5 to 6.5 MHz.
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