Process for producing mold used for obtaining press molded glass article
US5008002A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jan 19, 1990 |
| Grant date | Apr 16, 1991 |
| Priority date | — |
| Expiry date | Jan 19, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B2215/72
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.