Methods of forming laminated glass structures

Patent metadata

Field	Value
Publication number	US-9963374-B2
Application number	US-201414785457-A
Country	US
Kind code	B2
Filing date	Apr 14, 2014
Priority date	Apr 19, 2013
Publication date	May 8, 2018
Grant date	May 8, 2018

Abstract

A method of forming a laminated glass structure includes introducing a continuous ribbon of flexible glass substrate having a thickness of no greater than about 0.3 mm to a substrate material. The substrate material has a coefficient of thermal expansion (CTE) that is greater than that of the flexible glass substrate. The flexible glass substrate is laminated to the substrate material at an elevated temperature. The substrate material is cooled to introduce a compressive stress across a thickness of the flexible glass substrate.

First claim

What is claimed is:

1. A method of forming a laminated glass structure, the method comprising:
from a roll of a continuous ribbon of flexible glass substrate, introducing the continuous ribbon of flexible glass substrate having a thickness of no greater than 0.3 mm to a continuous ribbon of non-glass substrate material, the non-glass substrate material having a coefficient of thermal expansion (CTE) that is greater than that of the flexible glass substrate;
continuously laminating the flexible glass substrate to the non-glass substrate material at an elevated temperature of at least about 100 degrees C.; and
cooling the laminated glass structure to introduce a compressive stress across a thickness of the flexible glass substrate as the laminated glass structure passes continuously through a cooling station where the laminated glass structure is cooled.

2. The method of claim 1 , wherein the flexible glass substrate has a compressive strength of at least 40 MPa across the thickness of the flexible glass substrate.

3. The method of claim 1 , wherein the non-glass substrate material has a CTE that is at least 10 times the CTE of the flexible glass substrate.

4. The method of claim 1 further comprising providing an adhesive layer between the flexible glass substrate and the non-glass substrate material that couples the non-glass substrate material to the flexible glass substrate.

5. A method of forming a laminated glass structure, the method comprising:
shaping a substrate into a non-planar shape, the substrate comprising a non-glass material; and
laminating a flexible glass substrate to the substrate while the flexible glass substrate conforms to the non-planar shape of the substrate, wherein a rolling pressure is applied to the flexible glass substrate by a programmable roller assembly that moves along an actuation path during the step of laminating.

6. The method of claim 5 further comprising providing an adhesive layer between the flexible glass substrate and the substrate.

7. The method of claim 5 , wherein the step of laminating the flexible glass substrate to the substrate comprises heating an adhesive layer located between the flexible glass substrate and the substrate.

8. The method of claim 5 , wherein the adhesive layer is both heated and then cooled while the external pressure is applied to the one or both of the flexible glass substrate and the substrate.

9. The method of claim 5 , wherein the non-glass material comprises a metal, metal alloy or polymer.

10. The method of claim 5 further comprising shaping the substrate comprises introducing the substrate to a forming surface having a non-planar contour.

11. A method of forming a laminated glass structure, the method comprising:
introducing a flexible glass substrate as a continuous ribbon to a substrate comprising a non-glass material where the substrate of non-glass material is introduced to the flexible glass substrate as a continuous ribbon;
forming a substrate stack including a layer of the flexible glass substrate, a layer of the substrate comprising the non-glass material and a layer of an adhesive material located between the flexible glass substrate and the substrate;
introducing the substrate stack to a pressure zone;
applying pressure to the substrate stack within the pressurized zone while the substrate stack is both heated and then cooled; and
cutting the laminated glass structure into multiple, individual laminated glass structures.

12. The method of claim 11 further comprising introducing the substrate stack to the pressure zone as a continuous ribbon of the substrate stack.

13. The method of claim 11 further comprising shaping the substrate into a non-planar shape, and further wherein the step of forming the substrate stack comprises laminating the flexible glass substrate to the substrate while conforming the flexible glass to the non-planar shape of the substrate.

Assignees

• Corning Inc

Inventors

• Jouanno Jean-Marc Martin Gerard
• Kang Kiat Chyai
• Lewis Sue Camille
• Natarajan Govindarajan
• Xiao Yu

Classifications

• B32B2457/20

  Displays, e.g. liquid crystal displays, plasma displays · CPC title

• B32B17/061

  of metal · CPC title

• B29C44/24

  Making multilayered articles · CPC title

• B29C44/06

  Making multilayered articles {(B29C44/0407 - B29C44/0492 take precedence)} · CPC title

• B29C43/52

  Heating or cooling · CPC title