Method of manufacturing laminated glass articles with improved edge condition

Patent metadata

Field	Value
Publication number	US-11027524-B2
Application number	US-201816225994-A
Country	US
Kind code	B2
Filing date	Dec 19, 2018
Priority date	Jun 14, 2013
Publication date	Jun 8, 2021
Grant date	Jun 8, 2021

Abstract

A method of manufacturing a laminated glass article having a first clad layer, a second clad layer, and a core layer between the first clad layer and the second clad layer, by exposing an edge of the core layer. An etchant can be applied to the edge of the laminated glass article to form the recess. The recess can then be filled.

First claim

What is claimed is:

1. A laminated glass article comprising:
a first glass clad layer;
a second glass clad layer;
a glass core layer between the first glass clad layer and the second glass clad layer, each of the first glass clad layer and the second glass clad layer fused to the glass core layer;
a recess in an edge of the laminated glass article and disposed between the first glass clad layer and the second glass clad layer; and
a polymeric filler material disposed within a recess in an edge of the laminated glass article between the first glass clad layer and the second glass clad layer.

2. The laminated glass article of claim 1 , wherein the glass core layer is more soluble in an etchant than each of the first glass clad layer and the second glass clad layer.

3. The laminated glass article of claim 1 , wherein the recess has a depth of about 5 μm to about 100 μm.

4. The laminated glass article of claim 1 , wherein the polymeric filler material comprises a urethane-based material.

5. The laminated glass article of claim 1 , wherein the polymeric filler material comprises an epoxy-based material.

6. The laminated glass article of claim 1 , wherein a thickness of the laminated glass article is about 4 mm or less.

7. The laminated glass article of claim 1 , wherein a thickness of each of the first clad layer and the second clad layer is from about 10 μm to about 200 μm.

8. The laminated glass article of claim 1 , wherein the core layer has a higher or the same coefficient of thermal expansion than the first clad layer and the second clad layer.

9. The laminated glass article of claim 1 , wherein the polymer filler material is a member selected from the group consisting of 2-part epoxies, 2-part urethanes, 2-part acrylics, 2-part silicones, moisture-cure urethanes, moisture-cure epoxies, phenolics, novolacs, urea formaldehyde, melamine formaldehyde, crosslinking acrylics, crosslinking vinyls, alkyds, unsaturated polyesters, polyimides, and polyamides.

10. The laminated glass article of claim 1 , wherein the laminated glass article comprises a laminated glass sheet.

11. The laminated glass article of claim 1 , wherein the laminated glass article comprises a laminated glass tube.

12. An electronic device comprising a cover glass comprised of the laminated glass article of claim 1 .

13. An electronic device comprising a glass backplane comprised of the laminated glass article of claim 1 .

14. An electronic device comprising a display comprised of the laminated glass article of claim 1 .

15. An architectural glass pane comprising the laminated glass article of claim 1 .

16. An automotive glazing comprising the laminated glass article of claim 1 .

17. A vehicular glass member comprising the laminated glass article of claim 1 .

18. An appliance comprising the laminated glass article of claim 1 .

Assignees

• Corning Inc

Inventors

• Boek Heather Debra
• Cleary Thomas Michael
• Gallagher Michael Thomas
• Shustack Paul John
• Weller Mark Owen

Classifications

• B32B3/08

  characterised by added members at particular parts {(layer formed of separate pieces of material which are juxtaposed side-by-side B32B3/14, B32B3/18)} · CPC title

• Y10T428/1317

  Multilayer [continuous layer] · CPC title

• C03C17/28

  with organic material (C03C17/34, C03C17/44 take precedence) · CPC title

• C03C15/00

  Surface treatment of glass, not in the form of fibres or filaments, by etching (etching or surface-brightening compositions, in general C09K13/00) · CPC title

• C03B17/02

  Forming {molten} glass coated with coloured layers; {Forming molten glass of different compositions or layers; Forming molten glass comprising reinforcements or inserts} · CPC title