G - Physics – 08 – B
Patent
G - Physics
08
B
G08B 21/00 (2006.01) B08B 9/46 (2006.01) G01N 1/00 (2006.01) G01N 1/26 (2006.01) G01N 35/02 (2006.01) G01N 33/00 (2006.01) G01N 35/04 (2006.01)
Patent
CA 2100036
ABSTRACT OF THE DISCLOSURE To detect contamination in used PET returnable bottles, they are fed to a first testing station which takes a gas sample from each bottle. This first testing station tests for the presence of heavy contamination. Heavily contaminated bottles are identified as dirty. The bottles are then fed to a second testing station which takes a gas sample from the clean bottles and tests it for contamination, with a lower detection threshold. Bottles detected here as contaminated are removed, as are the bottles which fail the first test. The two-stage process allows testing with greater sensitivity while maintaining a high bottle throughput.
Gysi Peter
Huesser Theo
Mueller Martin
Robertson Peter Murday
Van Der Schaar Felix
Elpatronic Ag
Robic
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