| 摘要 |
In a machine for mass-producing heat-sealed bags from continuous panels of heat-sealable material, a welding cylinder carrying a plurality of transverse welding ledges for forming weld seams transverse to the length of such panels, the cylinder carrying a plurality of fasteners for permitting the ledges to be mounted at different points along the circumference of the cylinder so that the spacing between adjacent ledges can be varied for the production of bags having different widths. |
