Delamination resistant glass containers

Patent metadata

Field	Value
Publication number	US-9988174-B2
Application number	US-201313912457-A
Country	US
Kind code	B2
Filing date	Jun 7, 2013
Priority date	Jun 7, 2012
Publication date	Jun 5, 2018
Grant date	Jun 5, 2018

Abstract

Embodiments of glass containers resistant to delamination and methods for forming the same are disclosed. According to one embodiment, a delamination resistant glass container may include a glass article having a body extending between an interior surface and an exterior surface. The body defines an interior volume. The body may include an interior region extending from 10 nm below the interior surface of the body into a thickness of the body. The interior region has a persistent layer homogeneity such that the body is resistant to delamination.

First claim

What is claimed is:

1. A delamination resistant glass container comprising:
a glass article having a glass body extending between an interior surface and an exterior surface and defining an interior volume, the glass body formed from an aluminosilicate glass having a Class HGA1 hydrolytic resistance when tested according to the ISO 720 testing standard and comprising:
greater than 5 mol. % Al 2 O 3 ;
B 2 O 3 in an amount less than or equal to 0.5 mol. %; and
alkaline earth oxides in an amount from 5 mol. % to 8 mol. %; and

an interior region extending from about 10 nm below the interior surface of the glass body into a thickness of the glass body and having a persistent layer homogeneity such that the glass body is resistant to delamination and an extrema in the concentration of each constituent component of the aluminosilicate glass in the interior region is greater than or equal to about 80% and less than or equal to about 120% of a bulk concentration of the same constituent component at a mid-point of the thickness of the glass body when the glass container is in an as-formed condition.

2. The glass container of claim 1 , wherein the glass article is formed from a glass composition which has a 1000 poise temperature of less than or equal to about 1700° C.

3. The glass container of claim 1 , wherein the glass article is formed from a glass composition which is ion-exchangeable.

4. The glass container of claim 1 , wherein the interior region has a thickness T LR of at least about 100 nm.

5. The glass container of claim 1 , wherein the interior region has a thickness T LR of at least about 200 nm.

6. The glass container of claim 1 , wherein the interior region has a thickness T LR of at least about 350 nm.

7. The glass container of claim 1 , wherein the interior region has a thickness T LR of at least about 500 nm.

8. The glass container of claim 1 , wherein the glass article is formed from a glass composition that comprises less than or equal to about 0.3 mol. % of oxides of boron and less than or equal to about 0.3 mol. % of compounds containing boron.

9. The glass container of claim 1 , wherein the glass article is formed from a glass composition that is substantially free from boron and compounds containing boron.

10. The glass container of claim 1 , wherein the glass article is formed from a glass composition that comprises less than or equal to about 0.3 mol. % of oxides of phosphorous or less than or equal to about 0.3 mol. % of compounds containing phosphorous.

11. The glass container of claim 1 , wherein the glass article is formed from a glass composition that is substantially free of phosphorous and compounds containing phosphorous.

12. The glass container of claim 1 , wherein the glass article is formed from a glass composition that comprises less than or equal to about 0.5 mol. % of oxides of zinc or less than or equal to about 0.5 mol. % of compounds containing zinc.

13. The glass container of claim 1 , wherein the glass article is formed from a glass composition that is substantially free of zinc and compounds containing zinc.

14. The glass container of claim 1 , wherein the glass article is formed from a glass composition that comprises less than or equal to about 0.5 mol. % each of, chlorine, fluorine, oxides of tin, compounds containing tin, compounds containing chlorine, or compounds containing fluorine.

15. The glass container of claim 1 , wherein the glass article is formed from a glass composition that is substantially free from species which significantly volatilize at temperatures at which the glass composition has a viscosity in a range from about 200 poise to about 100 kilopoise.

16. The glass container of claim 1 , wherein the glass container is ion-exchange strengthened.

17. The glass container of claim 1 , wherein the glass container comprises a compressive stress greater than or equal to about 300 MPa and a depth of layer greater than or equal to about 10 μm.

18. The glass container of claim 1 , wherein the glass container has an ISO Standard 719 hydrolytic resistance of type HGB2 or better.

19. The glass container of claim 1 , wherein:
the glass body further comprises a surface region extending over the interior surface of the glass container to a depth from about 10 nm to about 50 nm from the interior surface of the glass container; and
the surface region has a persistent surface homogeneity such that the glass body is resistant to delamination and for a discrete point on the interior surface of the glass container, an extrema of the concentration of each constituent component of the aluminosilicate glass in the surface region at the discrete point is greater than or equal to about 70% and less than or equal to about 130% of the same constituent component in the surface region at any second discrete point on the interior surface of the glass container when the glass container is in an as-formed condition.

20. The glass container of claim 19 , wherein the glass body has a delamination factor less than or equal to 10.

21. The glass container of claim 19 , wherein the glass body has a delamination factor less than or equal to 1.

22. The glass container of claim 1 , wherein an extrema in the concentration of each constituent component in the interior region is greater than or equal to about 90% and less than or equal to about 110% of a bulk concentration of the same constituent component at a mid-point of the thickness of the glass body when the glass container is in an as-formed condition.

23. The glass container of claim 1 , wherein the glass article is formed from a glass composition which comprises at least one alkali oxide constituent.

24. The glass container of claim 1 , wherein the glass body has a delamination factor less than or equal to 10.

25. The glass container of claim 1 , wherein the glass container is a pharmaceutical package for containing a pharmaceutical formulation.

26. The glass container of claim 1 , wherein the glass article is formed from a glass composition that comprises Na 2 O in an amount greater than or equal to about 9 mol. % and less than or equal to about 13 mol. %.

27. The glass container of claim 1 , wherein the glass article is formed from a glass composition that comprises K 2 O in an amount greater than or equal to about 0.01 mol. % and less than or equal to about 2.0 mol. %.

28. The glass container of claim 1 , wherein the glass article is formed from a glass composition that comprises K 2 O in an amount greater than or equal to about 0.01 mol. % and less than or equal to about 1.0 mol. %.

29. The glass container of claim 1 , wherein the glass article is formed from a glass composition that comprises:
B 2 O 3 in an amount less than or equal to about 0.5 mol. %; and
alkali oxide in an amount greater than 8 mol. %.

30. The glass container of claim 1 , wherein the glass article is formed from a glass composition that comprises:
B 2 O 3 in an amount less than or equal to about 0.5 mol. %; and
Na 2 O in an amount greater than or equal to about 8 mol. %.

31. The glass container of claim 1 , wherein the glass article is formed from a glass composition that comprises
X mol. % of Al 2 O 3 and Y mol. % of alkali oxides, wherein a ratio Y:X is greater than 0.9.

32. The glass container of claim 1 , wherein

Assignees

• Corning Inc

Inventors

• Adib Kaveh
• Danielson Paul Stephen
• Hamilton James Patrick
• Morena Robert Michael
• Peanasky John Stephen
• Schaut Robert Anthony
• Schiefelbein Susan Lee

Classifications

• C03C21/002

  to perform ion-exchange between alkali ions (C03C21/005 takes precedence) · CPC title

• B65D1/0207 Primary

  characterised by material, e.g. composition, physical features · CPC title

• C03C3/087 Primary

  containing calcium oxide, e.g. common sheet or container glass · CPC title

• A61J1/1468

  Containers characterised by specific material properties · CPC title

• C03C3/091

  containing aluminium · CPC title