Nippon Hypox Laboratories Inc.

Shoji Adachi

Shigeru Asanuma

Yasuhiko Kaneko

A process for the production of a molded glass article is disclosed, said process comprises the steps of: applying wet treatment to a surface of a lead oxide-containing glass material, thereby forming a hydrated layer having a lower lead oxide content than that of a basic glass; heating the glass material having the hydrated layer; and press-molding the heated glass material. According to the process, a molded glass article having no cloudiness can be obtained and lead is not deposited on the surfaces of the molds used.

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Hinode, Japan

Shoji Adachi