Patent ID: 6494083
Filing Date: 2002-12-17
Classification: B07C,G01M

Abstract:
A method of testing the tightness and/or correct closure of a plurality of identical containers which are transported on a conveyor, the method comprising the following steps:transporting the containers consecutively at brief time intervals on the conveyor; sealing the containers by attachment of closures; measuring an internal-pressure characteristic upon attachment of the closures to the containers; marking the containers, not later than upon attachment of the closures, in a way which permits allocation to the respective container of the internal-pressure characteristic measured upon attachment of the closures; measuring the internal-pressure characteristic of the containers at a time interval after attachment of the closures; allocating to the respective container by means of the marking the internal-pressure characteristic measured upon attachment of the closure; and ascertaining the internal pressure of the container from the value of the internal-pressure characteristic measured at the time interval after the attachment of the closure and comparison with the value of the internal-pressure characteristic measured upon attachment of the closure.