| 摘要 |
<p>OF INVENTION. Stretch wrapping apparatus comprising a puckering device and an expandible rectangular frame demountably supported on the puckering device. Belts on the puckering device are provided to feed a length of plastic film tube onto pillars on the expandible frame to form a puckered band as a sub-base supporting the belts is raised relative to the pillars. A drive housed in the puckering device disengagably connected to jacking means on the puckering frame is provided to expand the frame and stretch the band to a size such that the expanded frame and the puckered band thereon can pass freely over the article to be wrapped.</p> |
