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US 9,752,998 B1Granted
Detecting anomalies in glass articles using NMR imaging
AssigneeOwens-Brockway Glass Container Inc.
InventorsRamasamy Raju, Pramod K Sharma
Life of this patent
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Abstract
A method of inspecting a glass article using nuclear magnetic resonance imaging (NMRI). An NMRI-active filler material may be applied to the interior surface, the exterior surface, or both of the container. The excess material then may be removed leaving the filler within one or more anomalies on the surface of the container. And an NMRI analysis may be performed producing images associated with the anomalies having filler material therein.
Claims7
A method of inspecting a glass container, which includes the steps of:
- (a) applying a contrast agent to a surface of the glass container by at least one of spraying the glass container with the contrast agent or dipping the glass container in the contrast agent, and then
- (b) removing excess material applied in said step (a) leaving the contrast agent in surface anomalies of the glass container by at least one of wiping, air-drying, heating, or blowing the glass container, and then
- (c) subjecting the glass container to nuclear magnetic resonance (NMR) analysis to form images of the surface anomalies retaining the contrast agent, and then
- (d) washing the glass container to remove the contrast agent.
1 more element
Dependencies are inferred from the claim text.