Precision glass roll forming process and apparatus
US8713972B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 2012 |
| Grant date | May 6, 2014 |
| Priority date | — |
| Expiry date | Aug 11, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/57
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process and apparatus for precision glass roll forming a supply of molten glass at a glass temperature of 1000° C. or higher. A pair of hot forming rolls having a surface temperature of about 500° C. or higher, vertically below the glass feed, that thin the supplied stream of molten glass to produce a formed glass ribbon. A pair of cold sizing rolls maintained at a surface temperature of about 400° C. or lower, vertically below the forming rolls, that thin the formed glass ribbon glass to produce a sized glass ribbon having a desired thickness and a desired thickness uniformity. The sized glass ribbon may have a thickness of 1 mm or less that varies in thickness by no more than +/−0.025 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.