Strengthened borosilicate glass containers with improved damage tolerance

• US 9,034,442 B2
• Filed: 10/11/2013
• Issued: 05/19/2015
• Est. Priority Date: 11/30/2012
• Status: Active Grant

• Current Assignee: Corning Incorporated
• Original Assignee: Corning Incorporated
• Inventors: Chang, Theresa, DeMartino, Steven Edward, Fadeev, Andrei Gennadyevich, Peanasky, John Stephen, Schaut, Robert Anthony, Timmons, Christopher Lee
• Primary Examiner(s): Wood, Ellen S
• Application Number:
  US14/052,048
• Publication Number:
  US 20140034544A1
• Time in Patent Office: 585 Days
• Field of Search: 501/53, 501/55, 501/68, 428/34.1, 428/34.4, 428/34.6, 428/410, 215/12.1
• US Class Current: 428/34.1
• CPC Class Codes: A61J 1/065 Rigid ampoules, e.g. glass ampoules
• CPC Class Codes: A61J 1/1468 Containers characterised by specific material properties
• CPC Class Codes: B32B 17/06 comprising glass as the main or only constituent of a layer, next to another layer of a specific material
• CPC Class Codes: B65D 1/0207 characterised by material, e.g. composition, physical features
• CPC Class Codes: B65D 1/0215 multilayered B65D81/3837 takes precedence
• CPC Class Codes: B65D 1/40 Details of walls other container details B65D23/00, B65D25/00
• CPC Class Codes: B65D 23/02 Linings or internal coatings
• CPC Class Codes: B65D 23/0814 characterised by the composition of the material
• CPC Class Codes: B65D 23/0821 consisting mainly of polymeric materials B65D23/0828 takes precedence
• CPC Class Codes: B65D 25/14 Linings or internal coatings of containers made by folding or erecting blanks made of paper B65D5/56 ; linings for domestic water storage heaters F24H1/183
• CPC Class Codes: B65D 25/34 Coverings or external coatings of containers made by folding or erecting blanks made of paper B65D5/62; for bottles or jars B65D23/08; wrappers B65D65/00
• CPC Class Codes: B65D 65/42 Applications of coated or impregnated materials
• CPC Class Codes: C03B 23/04 Re-forming tubes or rods
• CPC Class Codes: C03C 15/02 for making a smooth surface
• CPC Class Codes: C03C 17/005 Coating the outside
• CPC Class Codes: C03C 17/22 with other inorganic material C03C17/34, C03C17/44 take precedence
• CPC Class Codes: C03C 17/30 with silicon-containing compounds
• CPC Class Codes: C03C 17/32 with synthetic or natural resins C03C17/30 takes precedence
• CPC Class Codes: C03C 17/3405 with at least two coatings of organic materials C03C17/36, C03C17/42 take precedence
• CPC Class Codes: C03C 17/42 at least one coating of an organic material and at least one non-metal coating
• CPC Class Codes: C03C 21/002 : to perform ion-exchange between alkali ions C03C21/005 takes precedence
• CPC Class Codes: C03C 2217/78 : Coatings specially designed to be durable, e.g. scratch-resistant
• CPC Class Codes: C03C 2218/111 : by dipping, immersion
• CPC Class Codes: C09D 179/08 : Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
• CPC Class Codes: Y10T 428/13 : Hollow or container type article [e.g., tube, vase, etc.]
• CPC Class Codes: Y10T 428/131 : Glass, ceramic, or sintered, fused, fired, or calcined metal oxide or metal carbide containing [e.g., porcelain, brick, cement, etc.]
• CPC Class Codes: Y10T 428/1317 : Multilayer [continuous layer]
• CPC Class Codes: Y10T 428/24802 : Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
• CPC Class Codes: Y10T 428/315 : Surface modified glass [e.g., tempered, strengthened, etc.]

Abstract

According to one embodiment, a glass container may include a body formed from a Type I, Class B glass composition according to ASTM Standard E438-92. The body may have an inner surface, an outer surface and a wall thickness extending between the outer surface and the inner surface. The body may also include a compressively stressed layer extending into the wall thickness from at least one of the outer surface and the inner surface. A lubricous coating may be positioned on 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.

Claims

1. A glass container comprising:

a body formed from a Type I, Class B glass composition according to ASTM Standard E438-92, the body having an inner surface, an outer surface and a wall thickness extending between the outer surface and the inner surface, wherein the body comprises a compressively stressed layer extending into the wall thickness from at least one of the outer surface and the inner surface; and

a lubricous coating positioned on 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, wherein;

the lubricous coating is a tenacious organic coating;

the lubricous coating has a mass loss of less than about 5% of its mass when heated from a temperature of 150°

C. to 350°

C. at a ramp rate of about 10°

C./minute; and

the coefficient of friction is a maximum coefficient of friction measured relative to a second glass container in a vial-on-vial testing jig under a normal load of 30 N, the second glass container having a body formed from the Type I, Class B glass composition and comprising the lubricous coating on an at least a portion of the outer surface of a body of the second glass container and subjected to the same environmental conditions prior to measurement.

2. The glass container of claim 1, wherein the compressively stressed layer has a surface compressive stress greater than or equal to 150 MPa.

3. The glass container of claim 1, wherein the compressively stressed layer has a depth of layer greater than or equal to 25 μ

m.

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

5. The glass container of claim 1, wherein the lubricous coating is thermally stable at a temperature of at least about 260°

C. for 30 minutes.

6. The glass container of claim 1, wherein the lubricous coating is thermally stable at a temperature of at least about 280°

C. for 30 minutes.

7. The glass container of claim 1, wherein a light transmission through the portion of the outer surface of the body with the lubricous coating is greater than or equal to about 55% of a light transmission through an uncoated glass container for wavelengths from about 400 nm to about 700 nm.

8. The glass container of claim 1, wherein the lubricous coating comprises a polymer chemical composition and a coupling agent.

9. The glass container of claim 8, wherein the lubricous coating comprises:

a coupling agent layer positioned on the outer surface of the body, the coupling agent layer comprising the coupling agent; and

a polymer layer positioned over the coupling agent layer, the polymer layer comprising the polymer chemical composition.

10. The glass container of claim 8, wherein the coupling agent comprises at least one of:

a first silane chemical composition, a hydrolysate thereof, or an oligomer thereof; and

a chemical composition formed from the oligomerization of at least the first silane chemical composition and a second silane chemical composition, wherein the first silane chemical composition and the second silane chemical composition are different chemical compositions.

19. The glass container of claim 1, wherein the tenacious organic coating is thermally stable at each temperature in a range from about 260°

C. to about 350°

C. after heating at the temperature for 30 minutes.

11. A glass container comprising:

a body formed from a Type I, Class B glass composition according to ASTM Standard E438-92, the body having a hydrolytic resistance of HGB2 or better according to ISO 719 and an inner surface, an outer surface and a wall thickness extending between the outer surface and the inner surface, wherein the body is ion-exchange strengthened such that the body comprises a compressively stressed layer extending into the wall thickness from at least one of the outer surface and the inner surface; and

a lubricous coating positioned on at least a portion of the outer surface of the body, wherein the portion of the outer surface of the body with the lubricous coating has a coefficient of friction less than or equal to 0.7, wherein;

the lubricous coating is a tenacious organic coating that is thermally stable at a temperature of at least about 260°

C. for 30 minutes; and

the coefficient of friction is a maximum coefficient of friction measured relative to a second glass container in a vial-on-vial testing jig under a normal load of 30 N, the second glass container having a body formed from the Type I, Class B glass composition and comprising the lubricous coating on an at least a portion of the outer surface of a body of the second glass container and subjected to the same environmental conditions prior to measurement.

12. The glass container of claim 11, wherein the tenacious organic coating is thermally stable at a temperature of at least about 300°

C. for 30 minutes.

13. The glass container of claim 11, wherein the compressively stressed layer has a surface compressive stress greater than or equal to 150 MPa.

14. The glass container of claim 11, wherein the compressively stressed layer has a depth of layer greater than or equal to 25 μ

m.

15. The glass container of claim 11, wherein a light transmission through the portion of the body with the lubricous coating is greater than or equal to about 55% of a light transmission through an uncoated glass article for wavelengths from about 400 nm to about 700 nm.

16. The glass container of claim 11, wherein the lubricous coating has a mass loss of less than about 5% of its mass when heated from a temperature of 150°

C. to 350°

C. at a ramp rate of about 10°

C./minute.

17. The glass container of claim 11, wherein the lubricous coating comprises a polymer chemical composition and a coupling agent.

18. The glass container of claim 17, wherein the lubricous coating comprises:

a coupling agent layer positioned on the outer surface of the body, the coupling agent layer comprising the coupling agent; and

a polymer layer positioned over the coupling agent layer, the polymer layer comprising the polymer chemical composition.