Manufacture of plastics sheets
US3990876A · kind A · utility
4Cited by
12References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 15, 1975 |
| Grant date | Nov 9, 1976 |
| Priority date | — |
| Expiry date | Jan 15, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/07
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An improved method of making films, sheets or plates of a transparent plastics material of high optical quality comprises depositing a solution, molten mass or reaction mixture which yields the solid plastics on drying or hardening on a moving glass ribbon having a smooth upper surfce. The ribbon may be made by the float glass process. The plurality of plastics layer may be deposited one on another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.