Apparatus and method for inspecting multi-layer plastic containers
US6967716B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2000 |
| Grant date | Nov 22, 2005 |
| Priority date | — |
| Expiry date | Apr 21, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/3155
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This invention relates to an apparatus and method for inspecting multi-layer plastic containers (10). More particularly, the invention relates to such an apparatus and method whereby optical energy absorbing compounds are added to the materials comprising the layer(s) of the container (10) to facilitate inspection thereof. Apparatus comprises a sensor unit (40), an illumination unit (30) for illuminating a portion of electromagnetic spectrum at a near IR wavelength to an inspection zone (20) which is located between the sensor unit (40) and the illumination unit (30). A processing unit (50) which receives an output of the sensor unit (40) and determines the attributes of the multilayer plastic containers (10).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.