Quality inspection of container coatings
US9121835B2 · kind B2 · utility
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5References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 27, 2012 |
| Grant date | Sep 1, 2015 |
| Priority date | — |
| Expiry date | Dec 5, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2001/2229
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus are disclosed for testing and inspecting containers coated by means of a plasma treatment, e.g. plastic bottles, which are coated for instance with amorphous silicon oxide or carbon compounds. The containers are tested by a measuring device trace-gas-analytically, e.g. mass-spectrometrically, for undesired foreign substances, such as acetaldehyde and/or antimony, escaping from the container material after a plasma coating treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.