| 摘要 |
A method and apparatus for making bags from a thin thermoplastic material supplied as either a flat tube or a double-folded web to an advancing supporting path such as the common opposite flights of two sets of endless conveyors, thereby applying the loop-system principle, the supporting conveyors clamping the material at spaced intervals with two sets of clamping beams, lying close to each other, a separate set of cooperating sealing beams cooperating with the thermoplastic material for making the seals within the space between both sets of clamping beams. |
