Apparatus for testing the leaktightness of filled, closed packages of flexible material
OwnerBouwe Prakkeninventor
Life of this patent
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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.
Claims9
An apparatus for moving a series of filled and closed packages which are made of a flexible material along a path and for detecting whether there are leaks in any of the packages, said apparatus comprising:
- a conveyor means for supporting said series of filled and closed packages and moving them along a path,
- first and second pressure belts which are positioned to simultaneously press at least one of said packages towards and against said conveyor means as said packages are moved by said conveyor means along said path, said first and second pressure belts being spaced apart to provide a gap therebetween, and
- first sensing means located in said gap to determine the degree of expansion of each package which is compressed by said first and second pressure belts and thus detect whether any of said packages have leaks therein.
Dependencies are inferred from the claim text.