ANTI-COUNTERFEITING MEASURES FOR GLASS ARTICLES
First Claim
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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.
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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.
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Citations
26 Claims
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1. A method of forming an anti-counterfeit marking in a pharmaceutical package, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of detecting an anti-counterfeit marking on a pharmaceutical package comprising:
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directing a light source toward a surface containing the anti-counterfeit marking at a projection angle of from about 0°
to about 45°
; andprojecting 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. - View Dependent Claims (9, 10, 11)
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12. A pharmaceutical package comprising:
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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. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A method of forming an anti-counterfeit marking in a pharmaceutical package, comprising:
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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. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
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Specification