Förfarande för avlägsning av returnerade flaskor ur cirkulation

摘要

In order to determine whether in the case of a plastic bottle there are present in the region of the base of a bottle fatigue cracks which exclude the further use of the bottle, the measuring beam of a laser distance measuring device is applied to the base of the bottle in the region of the crack. The quantity and depth of the cracks can be detected from the output signal of the said device to the extent that it can be decided whether to take the bottle out of the reuse cycle.