Method and installation for dealkalizing glass containers using liquid
US12209050B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2020 |
| Grant date | Jan 28, 2025 |
| Priority date | — |
| Expiry date | Jul 10, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C23/008
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for dealkalizing the inner face (5) of the wall (2) of a glass container (1), which wall (2) delimits a cavity (3) and an opening (4) providing access to the cavity (3), comprising supplying a glass container, the inner face of the wall of which has a temperature of at least 350° C., and introducing into the cavity, with the inner face having a temperature of at least 350° C., a treatment liquid containing a substance designed to react under the heat's effect to bring about dealkalization of the glass, the introducing comprising injecting, by way of an injection head (11) disposed at a distance from the opening in the container and outside the latter, a predetermined metered quantity of the liquid as a spray cone (C) that is sufficiently narrow for all of the metered quantity to pass into the cavity. Also, methods and installations for treating glass containers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.