ANTI-COUNTERFEITING MEASURES FOR GLASS ARTICLES

• US 20170340518A1
• Filed: 05/31/2017
• Published: 11/30/2017
• Est. Priority Date: 05/31/2016
• Status: Active Grant

• Current Assignee: Corning Incorporated
• Original Assignee: Corning Incorporated
• Inventors: Logunov, Stephan Lvovich, Masters, Leonard Thomas, Miller, William James, Streltslov, Alexander Mikhailovich, Timmons, Christopher Lee
• Granted Patent: US 10,676,240 B2
• Time in Patent Office: Days
• CPC Class Codes: A61J 1/18 Arrangements for indicating condition of container contents, e.g. sterile condition
• CPC Class Codes: B23K 2103/54 Glass
• CPC Class Codes: B23K 26/0006 taking account of the properties of the material involved B23K26/32, B23K26/40 take precedence
• CPC Class Codes: B23K 26/0622 by shaping pulses
• CPC Class Codes: B23K 26/361 for deburring or mechanical trimming B23K26/351 takes precedence
• CPC Class Codes: B23K 26/362 Laser etching
• CPC Class Codes: B23K 26/53 for modifying or reforming the material inside the workpiece, e.g. for producing break initiation cracks
• CPC Class Codes: B41M 3/14 Security printing securities B42D25/29
• CPC Class Codes: B41M 5/24 Ablative recording, e.g. by burning marks; Spark recording marking by high energetic means, e.g. by laser otherwise than burning or ablative removal B41M5/26; materials or methods for recording or reproduction by optical means G11B7/00
• CPC Class Codes: B41M 5/262 recording or marking of inorganic surfaces or materials, e.g. glass, metal, or ceramics marking of plastic artifacts with inorganic additives B41M5/267
• CPC Class Codes: B42D 25/328 Diffraction gratings; Holograms
• CPC Class Codes: B42D 25/41 using electromagnetic radiation B42D25/435 takes precedence
• 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 2203/06 Arrangements on packages concerning bar-codes
• CPC Class Codes: B65D 23/00 Details of bottles or jars not otherwise provided for closure-securing elements B65D45/00
• CPC Class Codes: C03C 15/00 Surface treatment of glass, not in the form of fibres or filaments, by etching etching or surface-brightening compositions, in general C09K13/00
• CPC Class Codes: C03C 17/28 with organic material C03C17/34, C03C17/44 take precedence
• CPC Class Codes: C03C 21/002 to perform ion-exchange between alkali ions C03C21/005 takes precedence
• CPC Class Codes: C03C 2218/328 Partly or completely removing a coating
• CPC Class Codes: C03C 23/0025 : by a laser beam
• CPC Class Codes: C03C 3/087 : containing calcium oxide, e.g. common sheet or container glass
• CPC Class Codes: G06K 1/12 : otherwise than by punching
• CPC Class Codes: G06K 19/06037 : multi-dimensional coding
• CPC Class Codes: G06K 19/06178 : the marking having a feature size being smaller than can be seen by the unaided human eye
• CPC Class Codes: G06K 19/16 : the marking being a hologram or diffraction grating
• CPC Class Codes: G06V 20/80 : Recognising image objects characterised by unique random patterns
• CPC Class Codes: G06V 20/95 : Pattern authentication; Markers therefor; Forgery detection
• 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 428/24802 : Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]

Abstract

A glass container including a body having a delamination factor less than or equal to 10 and at least one marking is described. The body has an inner surface, an outer surface, and a wall thickness extending between the outer surface and the inner surface. The marking is located within the wall thickness. In particular, the marking is a portion of the body having a refractive index that differs from a refractive index of an unmarked portion of the body. Methods of forming the marking within the body are also described.

Claims

1. A method of forming an anti-counterfeit marking in a pharmaceutical package, comprising:

focusing a pulsed laser beam at a point on a surface of a glass body formed from an alkali-aluminosilicate glass composition; and

translating the pulsed laser beam along a scan path along the surface effective to remove a polymer-based coating from the surface of the glass body, thereby forming the anti-counterfeit marking on the glass article.

2. The method of claim 1, wherein the pulsed laser beam has a power density of greater than about 0.025 J/cm².

3. The method of claim 1, wherein the pulsed laser beam has a wavelength of from about 193 nm to about 2000 nm.

4. The method of claim 1, wherein the pulsed laser beam has an average power of from about 50 mW to about 500 mW.

5. The method of claim 1, wherein the polymer-based coating comprises a polyimide-based coating.

6. The method of claim 1, wherein a difference in UV absorption between the anti-counterfeit marking and an unmarked portion of the pharmaceutical package is from about 10% to 100%.

7. The method of claim 1, wherein a difference in UV-induced fluorescence between the anti-counterfeit marking and an unmarked portion of the pharmaceutical package is greater than 10%.

8. A method of detecting an anti-counterfeit marking on a pharmaceutical package comprising:

directing a light source toward a surface containing the anti-counterfeit marking at a projection angle of from about 0°

to about 45°

; and

projecting the anti-counterfeit marking onto an image plane for detection;

wherein the anti-counterfeit marking is not detectable through direct inspection or by direct illumination with the light source.

9. The method of claim 8, wherein the light source comprises a helium-neon laser having a wavelength of from about 400 nm to about 1,000 nm.

10. The method of claim 8, wherein the projection angle is from about 1°

to about 40°

.

11. The method of claim 8, the anti-counterfeit marking comprising a portion of the pharmaceutical package having a refractive index that differs from a refractive index of an unmarked portion of the pharmaceutical package.

12. A pharmaceutical package comprising:

a glass body having a delamination factor of less than or equal to 10, the glass body having an inner surface, an outer surface, and a wall thickness extending between the outer surface and the inner surface;

a polymer-based coating disposed on at least a portion of the outer surface of the glass body; and

a marking extending through the polymer-based coating such that the outer surface of the glass body within the marking is exposed.

13. The pharmaceutical package of claim 12, wherein the polymer-based coating comprises a polyimide coating.

14. The pharmaceutical package of claim 12, wherein the marking enables the pharmaceutical package to be traced through a manufacturing process, a filling process, or in a field of use.

15. The pharmaceutical package of claim 12, wherein the glass body is formed from an alkali-aluminosilicate glass composition.

16. The pharmaceutical package of claim 12, wherein the marking has a difference in UV absorption of greater than about 10% compared to a UV absorption of an unmarked portion of the pharmaceutical package.

17. The pharmaceutical package of claim 16, wherein the difference in UV absorption is from about 15% to about 90%.

18. The pharmaceutical package of claim 16, wherein the difference in UV absorption is from about 50% to about 75%.

19. A method of forming an anti-counterfeit marking in a pharmaceutical package, comprising:

focusing, using a lens having a numerical aperture of from 0.3 to 0.7, a laser at a point within a thickness of a wall of a glass body formed from an alkali-aluminosilicate glass composition prior to annealing the glass body;

operating the laser at a repetition rate of from about 80 kHz to about 300 kHz; and

translating the laser along a scan path, thereby forming the anti-counterfeit marking in the pharmaceutical package.

20. The method of claim 19, further comprising:

annealing the pharmaceutical package comprising the anti-counterfeit marking.

21. The method of claim 19, wherein the laser has a wavelength of about 355 nm.

22. The method of claim 19, wherein the laser has a power of from about 2 W to about 4 W.

23. The method of claim 19, wherein the numerical aperture of the lens is from 0.4 to 0.6.

24. The method of claim 19, further comprising maintaining the glass body at a temperature of from about 23°

C. to about 0.5°

C. below a melting point of the glass body.

25. The method of claim 19, wherein the glass body has an internal transmission of greater than about 95%.

26. The method of claim 19, wherein translating the laser beam comprises rotating the glass body at a linear speed of from 3 mm/s to 20 mm/s relative to the laser beam.