| 摘要 |
<p>A machine packages parcels with heat-shrinkable plastic film. It has a stand resting at the corners of a parallelogram, a horizontal frame with central gap for the parcel moves vertically within the frame, two rolls of film are mounted on adjacent sides of the frame, variable height guides along the sides of the frame allow two jaws to move to the films, two other jaws fixed to the sides opposite the first jaws revolve about their longitudinal axes, at least two heaters are fixed to each side of the frame, and film cutters are mounted at the bottom. entire process is carried out at one place, so saving space/time/ operations.</p> |
