| 摘要 |
Two contrarotating, heatable clamping jaws (1), having strip-shaped stamping faces (4), grip and seal a tube (18) between two packaging articles with transverse seams (11, 12). A cutter (6) and a counterface simultaneously separate the tube between a foot and a head seam (12, 11). The strip-shaped stamping faces (4) are arranged helically at least in one section on cylindrical surfaces (5) of the clamping jaws (1). Upon formation of a transverse seam, a comparatively small pressure region passes, transversely with respect to the conveying direction (9), over the entire width of the tube, so that thicker regions, for example longitudinal seams, can also be rolled over without pressure changes. The packages produced have an improved sealing. <IMAGE> |
