| 摘要 |
The invention relates to an apparatus for producing a pack (20) from a packaging-material web, comprising a forming tube (2), a filling tube (11), which runs, in part, through the forming tube, a forming shoulder (3), which is arranged on the forming tube (2) and is intended for forming a flexible enveloping tube, a folding means (7), which is arranged downstream of the forming shoulder (3), as seen in the conveying direction (A) of the flexible enveloping tube, and a sealing means (6) with a multiplicity of sealing units (6a, 6b), which are arranged downstream of the folding means (7), as seen in the conveying direction (A) of the flexible enveloping tube, wherein the forming tube (2) has a first diameter (D1) and in the filling tube (11) has a second diameter (D2) wherein the first diameter (D1) is greater than the second diameter (D2), wherein the folding means (7) is arranged at the end of the forming tube (2) and wherein the folding means (7) has a parabola-form folding element (8) in order to form folds in the flexible, enveloping tube, the parabola-form folding element (8) being arranged such that a vertex (9) of the parabola-form folding element (8) is directed counter to the conveying direction (A).
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