Strengthening glass containers

Patent metadata

Field	Value
Publication number	US-9932266-B2
Application number	US-201615296318-A
Country	US
Kind code	B2
Filing date	Oct 18, 2016
Priority date	Aug 31, 2012
Publication date	Apr 3, 2018
Grant date	Apr 3, 2018

Abstract

A glass container and related methods of manufacturing a glass container. A solution having a composition including a silane, a solvent, a catalyst, and water, is applied to an exterior glass surface of the glass container, at an application temperature between 5 and 40 degrees Celsius, such that the solution at least partially fills the surface imperfections to provide a room-temperature-curable cold-end coating on the glass container. Then, the applied solution is allowed to cure on the exterior glass surface of the glass container, at a curing temperature between 5 and 40 degrees Celsius.

First claim

The invention claimed is:

1. A method of filling surface imperfections in an exterior glass surface of a glass container that includes the steps of:
(a) applying a solution including an amphiphile, a solvent, a catalyst, and water to the exterior glass surface of the glass container, at an application temperature between 5 and 40 degrees Celsius, such that the solution at least partially fills the surface imperfections to provide a room-temperature-curable cold-end coating on the glass container;
(b) directly and within 60 seconds after completing step (a), rinsing the glass container with a liquid, including water, at a liquid temperature between 5 and 40 degrees Celsius, to remove residual solution from the glass container; and then
(c) after step (b), allowing the solution applied in step (a) to cure on the exterior glass surface of the glass container, at a curing temperature between 5 and 40 degrees Celsius and for a time between 30 and 180 seconds before further processing the glass container.

2. The method set forth in claim 1 wherein step (a) is carried out at atmospheric pressure, and does not require application in a vacuum.

3. The method set forth in claim 1 wherein the amphiphile includes a silane.

4. The method set forth in claim 1 wherein the amphiphile includes at least one of alkylalkoxysilane or octadecyltriethoxysilane.

5. The method set forth in claim 1 wherein the amphiphile includes at least one of a fluoro based alkoxy silane, a propoxy based alkoxy silane, or an alkyl B propoxy based alkoxy silane.

6. The method set forth in claim 1 wherein the application temperature is between 20 and 30 degrees Celsius.

7. The method set forth in claim 1 wherein the application temperature is between 22 and 28 degrees Celsius.

8. The method set forth in claim 1 wherein the application temperature is between 24 and 26 degrees Celsius.

9. A method of manufacturing that includes the steps of:
(a) forming a glass container;
(b) prior to step (c), applying a hot-end coating to an exterior glass surface of the glass container, but not applying a cold-end coating to the exterior glass surface of the glass container other than a coating formed by steps (e) to (g);
(c) annealing the glass container;
(d) cooling the glass container to not more than 40 degrees Celsius;
(e) applying to the glass container a solution having a composition including an amphiphile, a solvent, a catalyst, and water, and at an application temperature between 5 and 40 degrees Celsius, to provide a room-temperature-curable cold-end coating on the glass container;
(f) rinsing the glass container with a liquid, including water, at a liquid temperature between 5 and 40 degrees Celsius to remove residual solution from the glass container; and
(g) allowing the solution applied in step (e) to cure on the exterior glass surface of the glass container, at a curing temperature between 5 and 40 degrees Celsius, wherein step (g) is carried out at a relative humidity between 60 and 90%, and for a time between 30 and 180 seconds before further processing the glass container.

10. The method set forth in claim 9 wherein step (f) is carried out within 60 seconds after completing step (e).

11. The method set forth in claim 9 wherein the amphiphile includes at least one of alkylalkoxysilane or octadecyltriethoxysilane.

12. The method set forth in claim 9 wherein the amphiphile includes at least one of a fluoro based alkoxy silane, a propoxy based alkoxy silane, or an alkyl B propoxy based alkoxy silane.

13. The method set forth in claim 9 wherein the application temperature is between 20 and 30 degrees Celsius.

14. The method set forth in claim 9 wherein the application temperature is between 22 and 28 degrees Celsius.

15. The method set forth in claim 9 wherein the application temperature is between 24 and 26 degrees Celsius.

Assignees

• Owens Brockway Glass Container

Inventors

• Sharma Pramod K
• Yu Kevin Xin
• Click Carol A

Classifications

• C03C17/005

  Coating the outside · CPC title

• C09D7/63

  organic · CPC title

• C03C2218/114

  by brushing, pouring or doctorblading · CPC title

• C03B25/02

  in a discontinuous way · CPC title

• C03C17/30 Primary

  with silicon-containing compounds · CPC title