Process that uses liquid nitrogen for displacing air from a container prior to seaming a lid to the container
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United States of America Patent
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Aug 22, 2000
Issued Date -
N/A
app pub date -
Nov 20, 1998
filing date -
Dec 23, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
A process is provided for displacing air from containers prior to seaming a lid to a container. In the process, a container body is filled with contents and is then injected with liquid nitrogen. A lid is immediately placed on the container body, and a biasing force is immediately applied against the lid to maintain the lid on the liquid nitrogen filled container bodies until the container body reaches the seaming mechanism. The biasing force is sufficient to allow a portion of nitrogen gas from vaporization of the liquid nitrogen to escape from the container body, and to allow air originally present in the container body to escape from the container body, while preventing surrounding air from entering the container body.
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