| 摘要 |
A machine for the production of jackets for floppy discs used as data logging supports, apt to guarantee a high productivity with a full reliability and a top quality product, comprises a feeding unit (2), consisting of a feeder (4) for a stack of polyvinyl chloride (PVC) sheets, having a conveyor belt feedboard (5), and of a support for four rolls (7) of liner, and a working unit (3) being fed with said sheets and said liners, the working unit comprising a heated welding cylinder (13) cooperating with a back pressure cylinder (12), to which are simultaneously fed said sheets and said liners to be welded together at predetermined spots, and a pair of die-cutting cylinders (23, 24), downstream of said welding cylinders, to die-cut four jackets for each PVC sheet being fed. |
