Method for Creating Controlled Atmospheres without Containment on Automated Packaging Lines

摘要

A method and an installation seeking to create a controlled atmosphere in the head space of a product storage container in an installation of the type in which the following measures are taken continuously: —the container is partially filled with the product to a given fill level; —the upper part of the container is placed in contact with a treatment gaseous atmosphere aimed at removing all or some of the air present in the container above said fill level and at installing the required controlled atmosphere above said level; —the upper edge of the container is sealed or closed using a suitable means; —the controlled atmosphere being installed upstream of and/or during sealing, characterized in that the controlled atmosphere is installed in an uncontained injection zone by using at least one injector of tubular type oriented in the injection zone in such a way that at least one of the components of the velocity of the sprayed gas is the opposite to the direction of travel of the containers, and in that the injector is supplied with flow that is turbulent.