| 摘要 |
Equipment for laying flat an inflated film bubble during production of lay-flat tubular film comprises a support(3), with a reversing drive for rotation about its own axis(1), supporting wedge-shaped collapsing plates with transverse sliding bars(24) and the pinch rolls(8,9) of a film take-off and wind up system which includes diverting rolls(6,7) and turning bars(4,5) rotating around the support axis(1). The transverse sliding bars(24) are hollow and have air nozzles or slits facing the tubular film bubble(18) and connected to an air supply. |
