Method of making glass products, novel glass mix and novel glass product
US3963503A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 14, 1975 |
| Grant date | Jun 15, 1976 |
| Priority date | — |
| Expiry date | Mar 14, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C11/007
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An improved method of making glass products is provided which comprises mixing particulate used-container glass with a selected treating agent to form a unique glass mix. The used-container glass has a preselected approximate concentration range of foreign inclusions and an average reflectance of about 5% to about 95%. The mix is heated to a temperature and pressure above the sintering and softening point of the glass but below its melting point and within a range sufficient to activate the treating agent to either foam or fill the glass. In the latter case, increased pressure is applied to form the glass into a hard pressed product, such as a tile, appearance. In the former case, foamed glass of distinctive appearance is produced. The used-container glass includes a plurality of particles of various colors, and the pressed product may have oxide pigments embedded in the surfaces thereof. The treating agent can be dolomite or other suitable treating agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.