Glass Bottle Inspected By Glass Bottle Supplier

Glass bottle inspected by glass bottle supplier

Glass bottle inspected by glass bottle supplier, a pulse of acoustic wave is injected into a portion of the glass bottle forming a closed path for the propagation of the acoustic wave pulse so that the injected acoustic wave pulse travels round the closed plath, and acoustic wave pulse is detected while it is travelling round the closed path. Whether there is a defect along the closed path is judged in accordance with the magnitude of the detected acoustic wave pulse.

The present invention relates to a method and system for inspecting a glass beverage bottle such as that for containing food or beverage.

A crack or chip defect which can be produced at any point in the production cycle or use lifetime is of concern as it can impact the quality of the container product and consumer appeal. Bottle defects can normally be detected using optical techniques based on the principles of scatter, refraction or absorption, but the detection sensitivity is a strong function of defect size and its orientation and location within the bottle. A small crack which extends radially outward in the bottle is especially difficult to detect because it provides a very small cross-section area when viewed at the angle where light will enter or pass through the bottle wall.

According to one aspect of the invention, there is provided a method for inspecting a glass bottle comprising the steps of:

injecting a pulse of acoustic wave into a portion of the glass bottle forming a closed path for the propagation of the acoustic wave pulse so that the injected acoustic wave pulse travels round the closed path,

The disclosed technique is especially useful with glass bottles but its potential application field is not limited by the glass bottle manufacturer shape (round, oval or square). It is especially useful on container areas where the surface structure (such as threads on the bottle mouth), surface texture (embossing and painted labels), and container opacity (doped glass, etc.) severely limit the passage of optical energies which would normally be used to indicate the presence of a defect.

by: wan

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