Back to results
US 2018/0001434 A1Published application
Methods for strengthening edges of laminated glass articles and laminated glass articles formed therefrom
AssigneeCorning Incorporated
InventorShai Negev Shafrir
Life of this patent
Estimating the term…
Abstract
Methods for strengthening edges of a laminated glass article comprising a glass core layer positioned between a first glass clad layer and a second glass clad layer are disclosed. The methods may comprise polishing the cut edges of the laminated glass article with a slurry of polishing media applied to the edges of the laminated glass article with brushes. An edge strength of the laminated glass article is greater than or equal to about 400 MPa after polishing.
Claims20
A method for strengthening an edge of a glass laminate article, the method comprising:
- stacking two or more glass laminate articles to create a stack having an edge profile, wherein each glass laminate article comprises a glass core layer positioned between a first glass clad layer and a second glass clad layer;
- polishing the edge profile of the stack by delivering a loose abrasive material to the edge profile to create a polished stack;
- and
- separating the polished stack into two or more polished glass laminate articles, wherein the edge of each polished glass laminate article has an average strength value of greater than or equal to 400 MPa.
1 more element
A laminated glass article comprising:
- a glass core layer;
- a first glass clad layer fused directly to a first surface of the glass core layer;
- a second glass clad layer fused directly to a second surface of the glass core layer opposite the first surface;
- and
- a polished edge extending around at least a portion of the perimeter of the stack and having an average strength of greater than or equal to 400 MPa.
2 more elements
Dependencies are inferred from the claim text.