ULTRASONIC INSPECTION OF SEAL INTEGRITY OF BOND LINES IN SEALED CONTAINERS.

摘要

PCT No. PCT/CA90/00314 Sec. 371 Date May 12, 1992 Sec. 102(e) Date May 12, 1992 PCT Filed Sep. 21, 1990 PCT Pub. No. WO91/05250 PCT Pub. Date Apr. 18, 1991.A method for determining bond integrity of a sealed package has a lid bonded to a container rim by detecting flaws in the bond between the lid and the container. The method comprises: i) positioning the container rim between an ultrasonic transmitter system and an ultrasonic receiver system; ii) ultrasonically coupling the transmitter system and the receiver system to the container rim; iii) transmitting ultrasound waves from the transmitter system through the container rim to the receiver system; iv) generating a signal representative of the ultrasound waves received by the receiver system; and v) analyzing the signal for predetermined signal characteristics representative of a flaw in the bond to identify a flawed package seal.