Methhod for producing a biocidal glass surface of a soda-lime glass

US11186519B2 · kind B2 · utility

Assignees

• Glaswerke Arnold GmbH & Co. KG · DE
• HEGLA boraident GmbH & Co. KG · DE

Inventors

• Hans-Joachim Arnold · Winnenden, DE
• Hermann Dehner · Neuendettelsau, DE
• Thomas Rainer · Wernigerode, DE

Key dates

• Filing date: Nov 27, 2017
• Grant date: Nov 30, 2021
• Expiry date: Jan 21, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C23/0025
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

In a method for producing a biocidal glass surface of a soda-lime glass, a glass surface of a soda-lime glass is indirectly or directly contacted with silver, silver salt, or silver ions and directly or indirectly heated using at least one laser beam of a laser such that an ion exchange of sodium ions from the soda-lime glass with silver ions of the silver ions or from the silver or the silver salt results and silver ions of the silver ions deposit in the region of the glass surface. Before being heated, the glass surface is coated with a transfer support including a layer of silver and a protective layer covering the silver layer, such that the protective layer directly contacts the glass surface, the glass surface then being heated using the laser. Also, a soda-lime glass having a biocidal glass surface is produced by the method.