Method for preparing a glass convenient for trimming, a glass thus obtained, and method for trimming such a glass
View Patent ↗A method for making appropriate for trimming a glass comprising a hydrophobic and/or oil-repellent surface coating is provided, as well as the glass itself, in which the surface of the glass is coated with a temporary protective layer imparting to the glass a surface energy at least equal to 15 mJ/m 2 .
1. A glass, comprising a hydrophobic and/or oil-repellent coating onto which a temporary protective layer is coated which imparts to the glass a surface energy at least equal to 15 mJ/m 2 , wherein the protective layer comprises one or more metallic fluorides.
2. The glass of claim 1 , wherein, before coating the protective layer, the glass comprising a hydrophobic and/or oil-repellent surface coating has an initial surface energy lower than or equal to 14 mJ/m 2 .
3. The glass of claim 2 , wherein the initial surface energy is lower than or equal to 12 mJ/m 2 .
4. The glass of claim 1 , wherein the protective layer is coated on an area covering all of at least one of the two faces of said glass.
5. The glass of claim 1 , wherein the protective layer is coated only on an area adapted to receive the contact of a holding pad of said glass.
6. The glass of claim 1 , wherein the protective layer shows a continuous structure.
7. The glass of claim 1 , wherein the protective layer shows a discontinuous structure.
8. The glass of claim 7 , wherein the protective layer is screen-shaped.
9. The glass of claim 1 , wherein the fluoride is MgF 2 , LaF 3 , AIF 3 or CeF 3 .
10. The glass of claim 1 , wherein the protective layer has a thickness ranging from 1 to 50 nm.
11. The glass of claim 10 , wherein the protective layer has a thickness ranging from 5 to 50 nm.
12. The glass of claim 1 , wherein the hydrophobic and/or oil-repellent surface coating comprises a silane bearing fluorinated groups.
13. The glass of claim 1 , wherein the hydrophobic and/or oil-repellent surface coating has a thickness lower than 10 nm.
14. The glass of claim 1 , wherein the glass comprises an anti-reflection coating onto which the hydrophobic and/or oil-repellent coating is coated.
15. The glass of claim 14 , wherein the anti-reflection coating is made of a mineral material.
16. The glass of claim 14 , wherein the anti-reflection coating comprises several layers.