| 摘要 |
The machine, made with a mechanism (40) for attaching transverse closure strips (P) and a bag filling funnel (30), has interchangeable forming necks (10) for bags of different diameters, equipped with lengthwise welding elements (50) for the film edges. The length of the closure strips (P) is equivalent to half the circumference of the smallest forming neck, while the transverse welding elements (60) are designed to make a weld at least as long as half the circumference of the largest forming neck.
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