| 摘要 |
<p>In a method for producing tubular bags, a forming shoulder for shaping a packaging material web into a tubular bag having a laterally offset longitudinal seam includes a shoulder party and a prism part connected to each other along a shaping edge. Half of the shaping edge facing the incoming packing material web lies in the first and second quadrants of the cross-section of the prism part and the seam is formed in the fourth quadrant. Curvature-free surface lines in the second and fourth quadrants originating from the shaping edge approach each other with increasing distance from the prism part, and the shaping edge angle measured between the surfaces of the shoulder part and the inner face of the prism part decreases from the second to the third quadrant and increases again from the third to the fourth quadrant.</p> |
