Method for modifying the environment in a sealed container

Details Method for modifying the environment in a sealed container Method for modifying the environment in a sealed container

1999-06-10

2000-10-03

Johnson, Linda

Package making

Methods

With contents treating

53 52, B65B 3102

Patent

active

061256137

ABSTRACT:
A method for controlling an apparatus for exchanging a first gas contained in a sealed container for a second gas while the container is in a chamber. The method comprises the steps of withdrawing the first gas from the container for a predetermined period of time and approximating the head space volume of the container based directly or indirectly upon a change in headspace pressure in the container. The method further includes the step of withdrawing the first gas from the container and air from the chamber under conditions which are dependent upon the approximation of the headspace volume and which reduce the damage to the container due to pressure forces.

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