B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
93/72
B29D 23/00 (2006.01)
Patent
CA 1057990
ABSTRACT OF THE DISCLOSURE A machine is disclosed for forming a sleeve of a shrinkable, cellular polymeric material from a pre-decorated web. The web is processed to provide (1) a partial-depth slit along the longitudinal dimension and (2) cross-dimension pleat. Pre-decorated shrunken neck labels are formed from the web for overlying the neck and closure and a bottle and includes a pilfer-proof feature. The label is formed from the processed web by cutting a blank having the cross pleats therein and winding the blank on a mandrel. A rotary mandrel mechanism is provided with a vacuum at the periphery thereof to hold the label blank in place with the mechanism operating the mandrel to rotate it about its longitudinal axis for wrapping or winding the blank strip thereon. Several mandrels are carried on a rotary turn of the machine and each mandrel unit 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 over- lapping seam of the blank at a time just before the opposite ends, the leading end trailing ends of the blank, are about to overly one another. The heat is sufficient upon engagement of the overlapped portion to join or heat seal the material at a side seam and to form a sleeve. The sleeve is stripped onto the top neck end and over the closure of a bottle to a label position and shrunken to a snug fit, the pleats absorbing wrinkles that occur in shrinking.
296847
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