Strengthened glass containers resistant to delamination and damage

Patent metadata

Field	Value
Publication number	US-10117806-B2
Application number	US-201314075593-A
Country	US
Kind code	B2
Filing date	Nov 8, 2013
Priority date	Nov 30, 2012
Publication date	Nov 6, 2018
Grant date	Nov 6, 2018

Abstract

The glass containers described herein are resistant to delamination, have improved strength, and increased damage resistance. In one embodiment, a glass container may include a body having an inner surface, an outer surface and a wall thickness extending between the outer surface and the inner surface. At least the inner surface of the body may have a delamination factor less than or equal to 10. The body may also have a compressively stressed layer extending from the outer surface of the body into the wall thickness. The compressively stressed layer may have a surface compressive stress greater than or equal to 150 MPa. A lubricous coating may be positioned around at least a portion of the outer surface of the body, such that the outer surface of the body with the lubricous coating has a coefficient of friction less than or equal to 0.7.

First claim

What is claimed is:

1. A glass container comprising:
a body comprising a borosilicate glass having a Type 1 chemical durability according to USP <660>, the body enclosing an interior volume and having an inner surface, an outer surface and a wall thickness extending between the outer surface and the inner surface, wherein at least the inner surface of the body has a delamination factor less than or equal to 10;
a compressively stressed layer extending from the outer surface of the body into the wall thickness, the compressively stressed layer having a surface compressive stress greater than or equal to 150 MPa; and
a lubricous coating positioned around at least a portion of the outer surface of the body, wherein the outer surface of the body with the lubricous coating has a coefficient of friction less than or equal to 0.7 and wherein the lubricous coating comprises at least one of a metal nitride, a metal sulfide, a metal oxide, a diamond-like carbon, a graphene, a carbide coating, an inorganic salt, or a polymer.

2. The glass container of claim 1 , wherein the surface compressive stress is greater than or equal to 200 MPa.

3. The glass container of claim 1 , wherein the surface compressive stress is greater than or equal to 300 MPa.

4. The glass container of claim 1 , wherein the compressively stressed layer extends from the outer surface into the wall thickness to a depth of layer greater than or equal to about 3 μm.

5. The glass container of claim 1 , wherein the compressively stressed layer extends from the outer surface into the wall thickness to a depth of layer greater than or equal to about 25 μm.

6. The glass container of claim 1 , wherein the body is a glass body that is ion-exchange strengthened.

7. The glass container of claim 1 , wherein the body is a glass body that is high-temperature ion-exchange strengthened.

8. The glass container of claim 1 , wherein the body is a glass body that is thermally tempered.

9. The glass container of claim 8 , wherein the compressively stressed layer extends from the outer surface into the wall thickness to a depth of layer of up to about 22% of the wall thickness.

10. The glass container of claim 1 , wherein the body comprises laminated glass.

11. The glass container of claim 10 , wherein the laminated glass comprises:
a core layer having a core coefficient of thermal expansion CTE core ; and
at least one cladding layer fused to the core layer and having a second coefficient of thermal expansion CTE clad , wherein CTE core is not equal to CTE clad .

12. The glass container of claim 11 , wherein:
the at least one cladding layer comprises a first cladding layer and a second cladding layer;
the first cladding layer is fused to a first surface of the core layer and the second cladding layer is fused to a second surface of the core layer; and
CTE core is greater than CTE clad .

13. The glass container of claim 10 , wherein the compressively stressed layer extends into the wall thickness to a depth of layer which is from about 1 μm to about 90% of the wall thickness.

14. The glass container of claim 10 , wherein the compressively stressed layer extends into the wall thickness to a depth of layer which is from about 1 μm to about 33% of the wall thickness.

15. The glass container of claim 11 , wherein the at least one cladding layer has a delamination factor of less than or equal to 10 after the laminated glass is formed into the glass container.

16. The glass container of claim 11 , wherein the at least one cladding layer forms the inner surface of the body.

17. The glass container of claim 1 , wherein the body further comprises an inorganic coating positioned on at least a portion of the outer surface of the body, wherein the inorganic coating has a coefficient of thermal expansion which is less than a coefficient of thermal expansion of the borosilicate glass of the body.

18. The glass container of claim 1 , wherein the body is a glass body and has an interior region extending between the inner surface of the glass body and the outer surface of the glass body, the interior region having a persistent layer homogeneity such that an extrema in the concentration of each constituent component 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 exclusive of constituent components which are present in an amount less than 2 mol. %.

19. The glass container of claim 18 , wherein the interior region has a thickness of at least 100 nm.

20. The glass container of claim 1 , wherein the body is a glass body and the inner surface of the glass body has a persistent surface homogeneity such that for a discrete point on the interior surface of the glass container, an extrema of the concentration of each constituent component of the 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 exclusive of constituent components which are present in an amount less than 2 mol. %.

21. The glass container of claim 20 , wherein the persistent surface homogeneity extends into the wall thickness of the body to a depth D SR of at least 10 nm from the inner surface of the glass body.

22. The glass container of claim 1 , wherein the inner surface of the body comprises glass and was etched.

23. The glass container of claim 1 , wherein the inner surface of the body comprises glass was acid etched.

24. The glass container of claim 1 , wherein the body further comprises a barrier coating positioned at the inner surface of the body.

25. The glass container of claim 24 , wherein the barrier coating is a metal nitride coating, a metal oxide coating, a metal sulfide coating, SiO 2 , diamond-like carbide, graphenes or a carbide coating.

26. The glass container of claim 24 , wherein the barrier coating comprises at least one of Al 2 O 3 , TiO 2 , ZrO 2 , SnO, SnO 2 SiO 2 , Ta 2 O 5 , Nb 2 O 5 , Cr 2 O 3 , V 2 O 5 , ZnO, HfO 2 , or combinations thereof.

27. The glass container of claim 24 , wherein the barrier coating comprises at least one of a polybenzimidazoles, polybisoxazoles, polybisthiazoles, polyetherimides, polyquinolines, polythiophenes, phenylene sulfides, polysulfones, polycyanurates, parylenes, fluorinated polyolefins, perfluoroalkoxy polymers, polyether ether ketones (PEEK), polyamides, epoxies, polyphenolics, polyurethane acrylates, cyclic olefin copolymer and cyclic olefin polymers, polyolefins, oxidized polyethylenes, polypropylenes, polyethylene/propylene copolymers, polyethylene/vinyl acetate copolymers, polyvinylchloride, polyacrylates, polymethacrylates, polystyrenes, polyterpenes, polyanhydrides, polymaleicanhydrides, polyformaldehydes, polyacetals and copolymers of polyacetals, polysiloxanes of dimethyl or diphenyl or methyl/phenyl mixtures, substituted siloxanes, polyimides, polycarbonates, polyesters, parafins and waxes, or combinations thereof.

28. The glass container of claim 1 , wherein the glass of the body has at least a class S3 acid resistance or better according to DIN 1

Assignees

• Corning Inc

Inventors

• Chang Theresa
• Danielson Paul Stephen
• Demartino Steven Edward
• Fadeev Andrei Gennadyevich
• Morena Robert Michael
• Pal Santona
• Peanasky John Stephen
• Schaut Robert Anthony
• Timmons Christopher Lee
• Venkataraman Natesan
• Verkleeren Ronald Luce
• Bookbinder Dana Craig

Classifications

• C03B27/0413

  Stresses, e.g. patterns, values or formulae for flat or bent glass sheets · CPC title

• C03C2218/111

  by dipping, immersion · CPC title

• A61J1/1468 Primary

  Containers characterised by specific material properties · CPC title

• B65D23/0835

  consisting mainly of metallic compounds · CPC title

• B32B17/06

  comprising glass as the main or only constituent of a layer, next to another layer of a specific {material} · CPC title