CPC B65B 31/045 (2013.01) [B65B 9/12 (2013.01); B65B 31/02 (2013.01); B65B 57/10 (2013.01)] | 20 Claims |
1. A method for forming sealed partially-filled packages filled with a pourable product comprising at least:
forming a tube from a web of packaging material;
filling the pourable product into the tube for forming a product column within the tube;
directing a sterile gas into the product column for forming and/or maintaining a gas cushion within the product column which divides the product column into an upper portion and a lower portion;
forming and transversally sealing the tube, for obtaining the packages containing the pourable product and a gas space formed from a defined volume of the sterile gas originating from the gas cushion.
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