| 摘要 |
<p>The end of a length of stretch film (5) enveloping a pallet is restrained, prior to being heat-sealed, by a gripping mechanism (13) that can be traversed toward and away from the pallet, and is capable of contracting longitudinally in a direction parallel to the plane occupied by the tail end (C) of the film (5), transversely to the wrapping direction, from a position of engagement in which the gripping surfaces (17) are spaced apart and uniformly in contact with the film across its maximum width (L), to a position of restraint in which the selfsame surfaces are drawn together, pinching the film (5) to produce a uniform succession of folds and thus narrowing the material to a width (1) that can be accommodated fully by the heat-seal plate (14). <IMAGE></p> |
