Perforated mother sheet for partial edge chemical strengthening and method therefor
US9944554B2 · kind B2 · utility
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119References
22Claims
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Key dates
| Filing date | Sep 15, 2011 |
| Grant date | Apr 17, 2018 |
| Priority date | — |
| Expiry date | Jan 13, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49124
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Methods for chemically strengthening the edges of glass sheets are provided. Voids can be formed in a mother sheet. The edges of these voids may correspond to a portion of the new edges that would normally be created during separation and free shaping of the mother sheet. The mother sheet can then be immersed in a chemical strengthener. The edges of the voids can be chemically strengthened in addition to the front and back sides of the mother sheet. After thin film processing and separation, each of the resulting individual sheets has been chemically strengthened on both sides and on a portion of its edges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.