| 摘要 |
<p>A machine is disclosed for forming a sleeve of a shrinkable, cellular polymeric material from a predecorated web. The web is processed to provide (1) a partialdepth slit along the longitudinal dimension, and (2) crossdimension pleats. Pre-decorated shrunken neck labels are formed from the web for overlying the neck and closure of the bottle and including a pilfer-proof feature. Such a label is formed from the processed web by cutting the blank having the cross pleats therein and winding the blank on a mandrel to overlap the ends and seam, the overlap to make a sleeve. A rotary mandrel mechanism is provided with a vacuum at the periphery thereof to hold the label blank in place and the mechanism operates the mandrel to rotate it about its longitudinal axis for wrapping or winding the blank strip thereon. The mandrel includes a hot air nozzle system for heat welding or bonding the overlapped ends of the blank on the mandrel. Hot air is furnished by the nozzle which extends the length of the overlapping seam of the blank at a time just before the opposite ends, the leading and trailing ends of the blank, are about to overly one another. The heat is sufficient upon engagement of the overlap portions to join or heat seal the material at a side seam and form a sleeve. The sleeve is stripped onto the top neck end and over the closure of a bottle and shrunken to a snug fit.</p> |
