Method and apparatus for removing coatings applied to surfaces of a substrate
AssigneeCardinal CG Company
InventorsTimothy J. Valek, Roger D. O'Shaughnessy
Life of this patent
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Abstract
The present invention relates to methods and apparatus for removing coatings from generally opposed first and second major surfaces of a substrate. The method includes providing a table having a surface for slidable receipt of the substrate. First and second grinding apparatuses are provided at a mounting portion of the table, opposite one another. As the substrate moves over the table surface, it contacts the first and second grinding apparatuses. The coatings are simultaneously removed from the first major surface with the first grinding apparatus from the second major surface with the second grinding apparatus.
Claims19
A method of removing coatings from portions of generally opposed first and second major surfaces of a substrate, the portions comprising a width and a depth of coatings to be removed, the method comprising:
- providing a table having a table surface for slidable receipt of a substrate;
- providing a first grinding apparatus at a mounting portion of the table;
- providing a second grinding apparatus at the mounting portion of the table, opposite the first grinding apparatus;
- moving the substrate relative to the table surface such that the portions of the first and second surfaces of the substrate contact the first and second grinding apparatuses;
- and
- removing coating from the first surface using the first grinding apparatus while simultaneously removing coating from the second surface using the second grinding apparatus.
A method of removing coatings from a glass sheet, the method comprising:
- providing a glass sheet having generally opposed first and second surfaces, each surface bearing a functional coating;
- and
- simultaneously removing substantially all of the functional coating from a peripheral region of the first surface and removing substantially all of the functional coating from a peripheral region of the second surface.
A method of removing coatings from a substrate, the method comprising:
- providing a substrate having generally opposed first and second surfaces, the first surface bearing a photocatalytic coating and the second surface bearing a low emissivity coating;
- and
- simultaneously removing substantially all of the photocatalytic coating from a peripheral region of the first surface and removing substantially all of the low emissivity coating from a peripheral region of the second surface.
Dependencies are inferred from the claim text.