Process for producing mold used for obtaining press molded glass article
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United States of America Patent
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Apr 16, 1991
Grant Date -
N/A
app pub date -
Jan 19, 1990
filing date -
Jan 30, 1989
priority date (Note) -
Expired
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Abstract
The present invention relates to a process for producing a mold for glass press molding which comprises adopting, in the ion plating method to form an i-carbon film, a given hydrocarbon, given voltages, given temperature conditions, etc. According to the process, there could be obtained a mold for glass press molding, having an i-carbon film superior in adhesion to mold base, hardness, lubricity, etc. In this mold for glass press molding, the i-carbon film is less susceptible to peeling and glass releasability is good even after many times of press molding. Therefore, the mold can be used for glass press molding over a long period of time.
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