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1. (WO1999010722) METHOD FOR TESTING SEALED CONTAINERS

Pub. No.:    WO/1999/010722    International Application No.:    PCT/EP1998/005380
Publication Date: Mar 4, 1999 International Filing Date: Aug 25, 1998
IPC: F26B 3/28
F26B 9/10
F26B 25/04
G01M 3/24
G01M 3/36
Applicants: HEUFT SYSTEMTECHNIK GMBH
HEUFT, Bernhard
Inventors: HEUFT, Bernhard
Title: METHOD FOR TESTING SEALED CONTAINERS
Abstract:
In order to test the characteristics of containers (10) which are closed by means of seals (12), said characteristics being the center seating of the seal (12) on the container opening, the closure of the seal (12) on the seat or the residual air volume in the containers (10) in which the liquid is foamed for displacing residual air volume before sealing, mechanical vibrations in the seal (10) are excited and analyzed. The analysis of the mechanical vibrations results immediately after the placement of the seal (12) before an essential pressure change occurs in the container.