Claims
- 1. A method of preventing tarnishing of a polished glass article by corrosion of the polished glass surface due to moisture, which method comprises storing the polished glass article under a pressure of less than about 10.sup.-2 mm Hg Absolute and maintaining said pressure level until said polished glass surface is to be further processed in a tarnish-free condition.
- 2. The method of claim 1, wherein said storage prevents contact of said polished glass article with moisture, whereby said tarnishing is prevented.
- 3. The method of claim 1, wherein said glass article is polished, washed and dried prior to said storage.
- 4. The method of claim 1, wherein said storage is effected after polishing said glass article but before tarnish can be formed on the surface thereof and is terminated at a period of time prior to coating said glass article which is insufficient for tarnish to form thereon.
- 5. The method of claim 1, wherein said storage is at a temperature of about -10.degree. C. to +50.degree. C.
- 6. The method of claim 1, wherein said storage is for about 73 hours.
- 7. The method of claim 1, wherein said storage is in dry nitrogen gas under said reduced pressure.
- 8. A method of producing a glass article of improved quality comprising polishing a glass article, substantially immmdiately storing the polished glass article under a reduced pressure of less than about 10.sup.-2 mm Hg Absolute and applying a metal, a metal oxide or a fluoride coating onto the surface of the glass article substantially immediately after removal of said glass article from said reduced pressure, said storing being during the period after polishing said glass article and until said applying step.
Priority Claims (1)
Number |
Date |
Country |
Kind |
48-90721 |
Aug 1973 |
JPX |
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Parent Case Info
This is a continuation of application Ser. No. 497,346, filed Aug. 13, 1974, now abandoned.
US Referenced Citations (7)
Continuations (1)
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Number |
Date |
Country |
Parent |
497346 |
Aug 1974 |
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