Method and apparatus for sealing a packaging container overpress

Details Method and apparatus for sealing a packaging container overpress Method and apparatus for sealing a packaging container overpress

1991-01-31

1993-01-12

Raevis, Robert

Measuring and testing

Testing of apparatus

250342, G01J 100

Patent

active

051780232

ABSTRACT:
For sealing off overpressure valves of packaging containers, a small quantity of liquid sealant is introduced into a valve. To check whether such valve has been equipped with sealant, the sealant is heated, prior to introduction into the valve, to a temperature that is elevated compared with ambient temperature. After that the valve is checked for a temperature difference with a heat sensor, which causes valves not equipped with sealant to be rejected. The sealant is heated immediately prior to its application to a valve, in a nozzle delivering it.

REFERENCES:
patent: 1933403 (1933-10-01), Wilson
patent: 4428223 (1984-01-01), Trevisan

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