Method for sticking a film onto a curved substrate
US8349113B2 · kind B2 · utility
2Cited by
4References
20Claims
0Family size
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Key dates
| Filing date | Jul 11, 2008 |
| Grant date | Jan 8, 2013 |
| Priority date | — |
| Expiry date | Jul 15, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1028
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method sticks onto a curved surface of a substrate a functional film (4) that has a substantially planar initial shape. To this end, the film (4) is retained on a deformable membrane (1) by connecting means (2) that allow portions of said film to slip relative to the membrane when said membrane is deformed. This reduces stresses that are created in the film by the deformation. The method is adapted for applying a functional film to an ophthalmic lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.