Patent ID: 8341924
Filing Date: 2013-01-01
Classification: B65B

Abstract:
1. In an apparatus in a filling machine, a method of supplying gas or gas mixture to the inside of partly formed packages before a subsequent filling and sealing of the packages, the method comprising: supplying said gas or gas mixture as at least one flow into the package via an opening in the package, the supply being made such that the at least one flow flows into the package to an inner region of the package and thereafter returns as a return flow back through the opening, and temporarily catching return flow from the package in a delimited space outside the opening, and directing the return flow out from the delimited space via divided channels in which the return flow is rotated about 180°, divided positively and directed out from the delimited space in such a way that the average direction of the entire directed return flow is substantially vertical along the outer envelope surface of the package, wherein the gas is supplied through supply channels which are obliquely inclined to thereby give rise to a helical gas mass flow along the inner periphery of the package, and the delimited space is formed as a central return channel which is in communication with the divided channels.