Method for applying an anti-lacerative plastic layer to glass
US5028287A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1986 |
| Grant date | Jul 2, 1991 |
| Priority date | — |
| Expiry date | Dec 29, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31612
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention concerns a unique method for producing an anti-lacerative glass assembly wherein a plastic composite anti-laceration sheet is to be bonded to a glass substrate sheet. The plastic anti-laceration sheet includes an inner layer of polyvinyl butyral adpated to abut the glass substrate sheet, an intermediate layer of polyester, and an outer layer of abrasion resistant material. A glass cover sheet having substantially the same curvature as the glass substrate sheet is utilized to press the anti-laceration sheet into bonding engagement with the glass substrate sheet. In accordance with the present invention, the bonding operation is accomplished by heating the laminated glass assembly to a predetermined temperature in the range of 285.degree. F. to 305.degree. F. The present invention also concerns the use of a unique vacuum ring construction which is mounted about the periphery of the laminated assembly and it utilized to de-air the assembly. The vacuum ring is provided with a check valve to maintain the vacuum within the ring during periods wherein it is disconnected from a vacuum source. Further, the method of the present invention includes the step of removing a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.