METHOD FOR COATING GLASS CONTAINERS

• Main Authors: KÄRKKÄINEN, Ari, LEIVO, Jarkko, PESONEN, Matti, LEGRAND, Sacha, KUVAJA, Rauna-Leena, HADZIC, Admir, HANNU-KUURE, Milja
• Format: Patent
• Language: English; French; German
• Published: 10.04.2024
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; METALLURGY; MINERAL OR SLAG WOOL; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS

The present invention relates to a method for hard coating glass containers comprising the steps of:* Providing a heated glass container;* Applying a coating composition on the outer surface of the heated glass container;* Annealing the applied coating composition onto the outer surface of the heated glass container to obtain a coated glass container;wherein the coating composition comprises a metal and/or metalloid alcoholate, such as an alcoholate of titanium(IV), zirconium (IV), aluminium (III), tantalum (V), silicon (IV) and/or germanium (IV), in a solvent with a boiling point above 90°C,a coated glass container coated with the method as described above or below and the use of a coating composition comprising a metal alcoholate in a solvent with a boiling point above 90°C for increasing the hardness of a coated glass container.