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Method for attaching a shoulder element to a bag

  • US 6,581,357 B1
  • Filed: 04/12/2001
  • Issued: 06/24/2003
  • Est. Priority Date: 07/09/1998
  • Status: Expired due to Fees
First Claim
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1. A method for manufacturing bag tubes, said method comprising the steps of:

  • folding a web of film material about a longitudinal fold line, laying sections of the web on one another, along strips which are arranged as a distance from one another, and which run transversely to the fold line, connecting the sections to one another in order to form a row of pockets, cutting a hole in each pocket in the region of the fold line, then introducing into each pocket a shoulder piece comprising a closable outlet piece and a flange projecting from the outlet piece, by inserting the outlet piece of the shoulder piece through the hole, connecting the shoulder piece to the film material, closing the outlet piece of the shoulder piece, then filling the pocket from the open end and closing the open end, wherein for cutting the hole into each pocket, the film material of the pocket in the region of the fold line is shaped and clamped between two shaping parts and then in one of the shaping parts a knife is displaced and moved to a counter knife on the other shaping part.

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