| 摘要 |
A method and unit for forming tubular wrappings on a cigarette packing machine, whereby groups of cigarettes are fed successively to respective conveying heads of a continuous wrapping wheel, on which an end portion of a sheet of wrapping material, folded into a U about a respective group of cigarettes and carried by a respective conveying head, is folded onto the respective group by means of a respective outer folding member moved, with respect to the wrapping wheel, so to remain substantially parallel at all times to the respective conveying head; the outer folding members being equal in number to the conveying heads.
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