Abrasive jet forming laminated glass structures

Patent metadata

Field	Value
Publication number	US-10549401-B2
Application number	US-201515307225-A
Country	US
Kind code	B2
Filing date	Apr 29, 2015
Priority date	Apr 29, 2014
Publication date	Feb 4, 2020
Grant date	Feb 4, 2020

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.

First claim

What is claimed is:

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.

Assignees

• Corning Inc

Inventors

• Forenz Dominick John
• Humphrey Mark Lee
• Mckendrick Walter Jay
• Price Michael William
• Shugars Gregg Lee

Classifications

• B24C1/045 Primary

  for cutting (energy dissipating devices therefor B26F3/008) · CPC title

• B24C7/0023

  of feed pressure · CPC title