Glass manufacturing – Processes – With chemically reactive treatment of glass preform
Patent
1989-09-14
1990-12-11
Lacey, David L.
Glass manufacturing
Processes
With chemically reactive treatment of glass preform
65 321, 65102, 204164, C03C 1500
Patent
active
049767640
ABSTRACT:
According to the present process for producing a molded glass article, the surface of a lead oxide-containing glass material to be press molded is subjected in advance to an oxidation treatment with activated oxygen ion; thereby, there takes place no reduction reaction of lead oxide at the glass surface, at the time of press molding of the glass material, and there can be obtained a molded glass article with a clear surface. Further, there occurs no adhesion of lead to the surface of the mold used, and consequently the mold life is extended, which is very economical.
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Blumetritt et al. IBM Technical Disclosure Bulletin, Plasma Flame Sprayed Coatings with Metallic Interface, vol. 12, No. 9, Feb. 1970, p. 1364.
Bruckner John J.
Hoya Corporation
Lacey David L.
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