Package making – Methods – With contents treating
Patent
1998-11-20
2000-08-22
Coan, James F.
Package making
Methods
With contents treating
53 98, 53239, 53402, 53431, 53471, 53488, 53511, 413 6, 413 27, 413 31, B21D 5126, B65B 728, B65B 3104, B65B 5518, B65B 5519
Patent
active
061053414
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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Coan James F.
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