Methods for manufacturing unleaky closed containers and leak testing apparatus
OwnerMartin LEHMANNinventor
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Abstract
In a leak testing apparatus and a method for manufacturing unleaky closed containers having first and second flexible wall areas with different flexibility characteristics, a biasing member is moved toward and onto the first flexible area and a force detector monitors a biasing force at the second flexible area. A container is considered unleaky if a difference signal from force measuring signals at first and second points in time fulfills a test criteria. Sampling the biasing force monitored which results in the first force measuring signal includes determining maximum biasing force signal value which occurs during a time span up to and including the first point in time.
Claims18
A method for manufacturing unleaky closed containers having a flexible wall and an opening closed by a flexible seal comprising:
- applying a force on a container;
- measuring a force applied on the container by a force detector which generates an output signal;
- establishing if the container is unleaky/leaky based on the output signal of the detector;
- wherein the force detector is applied adjacent to or in contact with the flexible seal.
A leak testing apparatus for leak testing a closed container having a flexible wall and an opening closed by a flexible seal, the apparatus comprising:
- a biasing arrangement for compressing the flexible wall of the container under test;
- a force detector adjacent to or in contact with the flexible seal of a container under test, the force detector generating an output signal useful in establishing if the container is unleaky/leaky.
Dependencies are inferred from the claim text.