Packaging machine, packaging methods and packaging systems,

The present invention is to provide a packaging machine (1) capable of adjusting the thickness of the package with a simple configuration. Packaging machine (1) is a packaging machine to produce the packaged articles and packaging body gas and is sealed foods such as bags (B), comprising cooling part (6). Cooling unit (6) cools the gas fed into the tubular film formed into a bag (F). Packaging machine (1) is prepared wrapping body is and the articles to be packaged gas is sealed with a lower outside air temperature (B).