Process and apparatus for monitoring the hermeticity of filled containers closed by sealed-on or welded-on cover of the like
AssigneeGASTI Verpackungsmaschinen GmbH
InventorsGerhard Cerny, Ewald G. Welp, Alois Gneithing, Fritz Neber
Life of this patent
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Abstract
The invention relates to a process and an apparatus for monitoring the hermeticity of filled containers closed by sealed-on or welded-on covers, or the like. The air or gas cushion present between the cover and the material with which the container is filled, is heated, and the change caused in the position of the cover, by the resulting increase in the volume of air or gas, is monitored, after which the containers which have been indicated as having missing or faulty covers, are removed.
Claims10
A process for monitoring the hermeticity of material filled containers which have an air or gas cushion present between the material and the sealed-on or welded-on covers comprising,
- heating the air or gas cushion present between the cover and the material in the container via the cover,
- pressing the cover by temporary mechanical impact into a lower initial position,
- scanning the change in position of the cover, which changes as a result of an increase in volume of the heated air or gas cushion, and then
- removing the containers which have been scanned and determined to have missing or faulty covers.
Apparatus for monitoring the hermeticity of material filled containers which have an air or gas cushion present between the material and the sealed-on or welded-on covers comprising,
- an adjusting unit in connection with
- a heating device, which is adjacent to
- a scanning device having
- a measuring indicator attached thereto, said heating device for each container or cover having
- a ram-like heating head, having
- a contact surface capable of being placed on the cover, said heating head being mounted in
- guide bushings in such a way as to be axially movable in opposition to at least
- one pressure spring.
Dependencies are inferred from the claim text.