Flap device for forming a tubular package

摘要

There is provided a package container forming flap (10) capable of forming a tubular packaging material in a rectangular shape in cross section with reliability and accuracy. The package container forming flap (10) comprises lateral seal bars (1) for laterally sealing a tubular packaging material, a pair of opposing fixed plates (11) which are disposed over each lateral seal bar (1) in parallel with a seal surface (6) thereof, forming arms (12) for turning about axes which are in parallel with a longitudinal direction of the tubular packaging material, and movable plates (13) which are secured to the forming arms (12) and cooperate with the fixed plates (11) to shape the tubular packaging material in a rectangular shape in cross section. <IMAGE>