METHOD AND APPARATUS FOR MANUFACTURING AND ULTRASONIC TESTING OF BONDING REGION OF SEALED FOODSTUFF CONTAINERS

摘要

Apparatus and method for testing proper seal between a foil or lid and a container along a bond area (3) by means of a transmitter/receiver head (12) for applying a beam of ultrasonic energy to such bond area (3) and evaluating reflected ultrasonic energy to determine accuracy of such seal. To improve ultrasonic energy transmission to and from the bond area (3) there is provided a liquid interface (26) between transmitter/receiver (12) and bond area (3).