Method of making vacuum insulated panel with optimized laser beam size
US12365164B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 5, 2023 |
| Grant date | Jul 22, 2025 |
| Priority date | — |
| Expiry date | Mar 4, 2044 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B80/22
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of making a vacuum insulating panel, the vacuum insulating panel including a first glass substrate, a second glass substrate, a plurality of spacers provided in a gap between at least the first and second glass substrates, and a seal provided between at least the first and second glass substrates, the seal comprising a first seal layer. The method may include: providing first seal material for the first seal layer in a location at least partially between at least the first and second glass substrates; laser heating, using a laser beam from a continuous wave near-IR laser, the first seal material in order to form the first seal layer; wherein said laser heating may comprise using the laser beam, having a size of from about 2-15 mm, so that the laser beam at least partially passes through at least one of the glass substrates to fire and/or sinter the first seal material thereby forming the first seal layer, in a manner so that the first seal layer a density of from about 2.8-4.0 g/cm3; and after forming the first seal layer, evacuating the gap to a pressure less than atmospheric pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.