Apparatus for testing the leaktightness of filled, closed packag

Details Apparatus for testing the leaktightness of filled, closed packag Apparatus for testing the leaktightness of filled, closed packag

1986-04-25

1987-10-06

Levy, Stewart J.

Measuring and testing

With fluid pressure

Leakage

73 52, G01M 300

Patent

active

046974520

ABSTRACT:
For testing filled closed packages of flexible material for leaktightness use is made of an apparatus provided with conveyor means (2) for feeding packages in line and with means for applying pressure to the packages. The last-mentioned means consist of two pressure belts (4, 5) disposed a short distance apart. In the gap (6) between the pressure belts (4, 5) is situated a pivoting arm (8) or a shoe (20) having a pressure chamber (21), whereby it can be determined whether the portion of the package lying in the gap between the pressure belts is taut. This apparatus is in particular suitable for testing bags having two curved surfaces which are joined together by three or four sealing seams.

REFERENCES:
patent: 3918293 (1975-11-01), Feigel
patent: 4024956 (1975-05-01), Cassidy
patent: 4148213 (1979-04-01), Prakken
patent: 4510730 (1985-04-01), Edmondson
patent: 4517827 (1985-05-01), Tapscott

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