G - Physics – 01 – N
Patent
G - Physics
01
N
349/44
G01N 29/04 (2006.01) G01N 29/26 (2006.01)
Patent
CA 1337830
A method and apparatus are provided for determining bond integrity of a seal container having a lid bonded to the rim of the container. The integrity of the bond is determined by detecting flaws therein, between the lid and the container rim. The system method comprises the steps of: i) positioning the container rim between an ultrasonic transmitter system and an ultrasonic receiver system. The transmitter and receiver systems comprise an array of a plurality of transmitters and receivers, where the array corresponds to the circumferential shape of the container rim. Each of the transmitters is offset laterally relative to a corresponding receiver, in order to enhance the sensitivity of the system. ii) the transmitter system and the receiver system are ultrasonically coupled to the container rim. iii) ultrasound waves are transmitted from the transmitter through the rim to the receiver system. iv) a voltage signal is generated representative of the ultrasound waves received by the receiver system. v) the voltage signal is analyzed for predetermined signal characteristics representative of a flaw in the bond to identify flawed package seal.
615294
Farahbakhsh Bahram
Herzig Ralph
Jarman David
Alcan International Limited
Sim & Mcburney
LandOfFree
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