Apparatus for making bottom seal thermoplastic bags

摘要: According to the present disclosure, tubular thermoplastic material is intermittently fed between opposed transversely extending seal bars operating in timed relation with intermittent feeding of web sequentially perform cutting and sealing during its period repose. To insure a clean straight transverse cut, which occurs momentarily before sealing, held under tension longitudinally spaced draw feed rolls. Immediately after severed, are brought into pressure engagement along margin will define bottom bag. Before an additional increment, it rearwardly avoid possibility adherence bars.