Apparatus and method for filling a container

摘要

The method of filling a chamber in a container with gas, comprises the steps of forming a seal between a fill head and the container by indenting material around an opening in the container with the fill head. It involves conducting a flow of gas through the fill head and into the chamber in the container through the opening in the container, and blocking gas flow through the seal between the fill heads and the container by engagement of the fill head with the indented material of the container around the opening in the container during flow through the fill head. The step of forming a seal between the fill head and the container by indenting material around an opening in the container with the fill head includes plastically deforming the material around the opening in the container with a ridge which extends around an opening in the fill head.