Packaging

Details Packaging Packaging

B - Operations, Transporting

65

B

156/50, 154/29.0

B65B 9/06 (2006.01) B29C 65/00 (2006.01) B29C 65/10 (2006.01) B65B 31/02 (2006.01) B65B 31/04 (2006.01) B65B 51/20 (2006.01)

Patent

CA 1045015

Abstract of the Disclosure The method of and apparatus for packaging units in flexible sheet material which is heat- sealable at least on one side, in which a web of the material is formed into a tube with an inside- face-to-inside-face longitudinal seam by bringing the side margins of the web into inside-face-to- inside-face engagement and pressing them together at a sealing station, and heating the inside faces of said margins as they converge toward one another and meet at the sealing station by directing a stream of hot gas against them. Transverse seals are formed across the tube at package length inter- vals with a unit to be packaged in the tube between successive transverse seals. The gas may be a pre- servative gas for preservation of the unit in each package. Additionally, preservative gas may be introduced into the tube downstream from said seal- ing station.

242569

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