Composite mirror panels
US4465734A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 1982 |
| Grant date | Aug 14, 1984 |
| Priority date | — |
| Expiry date | May 4, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249987
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method of manufacturing a composite which includes a mirror panel comprising the steps of water-tightly bonding a first backing sheet made of waterproof material to the rear side of a mirror including a vitreous sheet bearing a radiation-reflecting coating on its rear side, thereby forming a mirror/backing sheet laminate; locating the laminate and a second backing sheet between a pair of dies with the laminate and the second backing positioned in spaced relationship; injecting the space between the laminate and the second backing sheet with a foamable plastic material; allowing or causing the foamable plastic material to foam and thereby press the laminate and the second backing sheet into close conformity with the respective die faces and, allowing or causing the foam to set and adhere to each backing sheet while the laminate and second backing sheet are pressed against the die faces to form a substantially rigid composite sandwich structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.