Formation of laminated glass articles
US3971668A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 5, 1974 |
| Grant date | Jul 27, 1976 |
| Priority date | — |
| Expiry date | Aug 5, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2605/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
In forming a laminated glass article a first stage comprises assembling two glass sheets with an interlayer of thermoplastic transparent plastics material and heating the assembly to a first temperature at which some softening of the plastics material occurs. In the second stage the assembly is heated to a second higher temperature and maintained at the second temperature for a period such that full bonding occurs between the glass sheets and the interlayer, and then cooled, the exposed periphery of the interlayer being maintained at a pressure which is a controlled amount below that applied to the faces of the glass sheets for at least part of the period that the assembly is heated to the second temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.