Abrasive jet forming laminated glass structures

• US 10,549,401 B2
• Filed: 04/29/2015
• Issued: 02/04/2020
• Est. Priority Date: 04/29/2014
• Status: Active Grant

• Current Assignee: Corning Incorporated
• Original Assignee: Corning Incorporated
• Inventors: Forenz, Dominick John, Humphrey, Mark Lee, McKendrick, Walter Jay, Price, Michael William, Shugars, Gregg Lee
• Primary Examiner(s): Nguyen, George B
• Application Number:
  US15/307,225
• Publication Number:
  US 20170120420A1
• Time in Patent Office: 1,742 Days
• Field of Search: 451 40
• CPC Class Codes: B24C 1/045 for cutting energy dissipating devices therefor B26F3/008

Abstract

A method of shaping a laminated glass structure comprising a flexible glass sheet having a thickness of no greater than about 0.3 mm laminated to a non-glass substrate by an adhesive layer is provided. The method includes cutting the laminated glass structure with an abrasive cutting jet including a pressurized cutting fluid and abrasive particles thereby forming a shaped laminated glass structure. A glass edge strength of a cut edge of the shaped laminated glass structure is at least about 20 MPa.

Claims

1. A method of shaping a laminated glass structure comprising a flexible glass sheet having a thickness of no greater than about 0.3 mm laminated to a non-glass substrate by an adhesive layer, the method comprising:

positioning the flexible glass sheet proximate to an abrasive cutting jet such that the flexible glass sheet faces the abrasive cutting jet;

cutting the laminated glass structure with the abrasive cutting jet comprising a pressurized cutting fluid and abrasive particles thereby forming a shaped laminated glass structure;

wherein a compressive strength of a cut edge of the flexible glass sheet is at least about 20 MPa.

2. The method of claim 1, wherein the abrasive particles have an ISO/FEPA grit designation of at least 70.

3. The method of claim 1 comprising pressurizing the cutting fluid to at least about 17,000 psi.

4. The method of claim 1, wherein a nozzle forming the abrasive cutting jet has an inner diameter of about 0.2 mm to about 1.3 mm.

5. The method of claim 1 comprising initially forming the abrasive jet at a location spaced from the laminated glass structure.

6. The method of claim 1 further comprising masking at least a part of a surface of the flexible glass sheet.

7. The method of claim 1, wherein the step of cutting the laminated glass structure with the abrasive cutting jet comprises cutting the laminated glass structure while submerged.

8. The method of claim 1, wherein a grit size of the abrasive particles is no greater than 150% of the thickness of the flexible glass sheet.

9. The method of claim 1, wherein the step of cutting the laminated glass structure with the abrasive cutting jet comprises cutting at a rate of between about 20 mm/min and about 3500 mm/min.

10. A method of shaping a laminated glass structure comprising a flexible glass sheet having a thickness of no greater than about 0.3 mm laminated to a non-glass substrate by an adhesive layer, the method comprising:

cutting the laminated glass structure with an abrasive cutting jet comprising a pressurized cutting fluid and abrasive particles thereby forming a shaped laminated glass structure;

wherein the flexible glass sheet faces the abrasive cutting jet thereby exposing the flexible glass sheet to the abrasive cutting jet;

wherein a grit size of the abrasive particles is no greater than 150% of the thickness of the flexible glass sheet.

11. The method of claim 10, wherein a compressive strength of a cut edge of the flexible glass sheet is at least about 20 MPa.

12. The method of claim 10, wherein the abrasive particles have an ISO/FEPA grit designation of at least 70.

13. The method of claim 10 comprising pressurizing the cutting fluid to at least about 17,000 psi.

14. The method of claim 10, wherein a nozzle forming the abrasive cutting jet has an inner diameter of about 0.2 mm to about 1.3 mm.

15. The method of claim 10, wherein the step of cutting the laminated glass structure with the abrasive cutting jet comprises cutting the laminated glass structure while submerged.

16. The method of claim 10, wherein the step of cutting the laminated glass structure with the abrasive cutting jet comprises cutting at a rate of between about 20 mm/min and about 3500 mm/min.

17. A laminated glass structure, comprising:

a flexible glass sheet having a thickness of at most about 0.3 mm and a cut edge formed by an abrasive cutting jet; and

a non-glass substrate bonded to a surface of the flexible glass sheet;

wherein a compressive strength of the cut edge of the flexible glass sheet is at least about 20 MPa.

18. The laminated glass structure of claim 17 further comprising a hole cut through the flexible glass sheet and the non-glass substrate, wherein the hole is at least partially defined by the cut edge.

19. The laminated glass structure of claim 17 further comprising a beveled edge, wherein the non-glass substrate extends beyond the cut edge of the flexible glass sheet.