| 摘要 |
<p>A process and machine for wrapping articles (P)with a stretchable film (14), in which the article (P) is lifted against a length of pre-stretched film whose flaps are successively spread out under tension onto the undersurface of said article. Prior to the lifting of the article (P), the film (14) is firstly submitted to a first pre-stretching in a first direction, within the maximum value permitted by the film, and thereafter the film is submitted to a second pre-stretching in a second direction transverse to said first direction, while simultaneously said first pre-stretching is suitably and uniformly attenuated to allow the maximum stretchability of said film in said second direction. When the article is lifted and pushed against the length of pre-stretched film, said first pre-stretching and said second pre-stretching are suitably and uniformly attenuated, whereby said film is not submitted to anomalous tensions in contacting the article and whereby said article is engaged delicately, while ensuring the formation of a wrapping which engages said article intimately. <IMAGE></p> |
