Machine for the manufacture of packing containers

Details Machine for the manufacture of packing containers Machine for the manufacture of packing containers

B - Operations, Transporting

29

D

93/50

B29D 23/00 (2006.01)

Patent

CA 1080527

ABSTRACT OF THE DISCLOSURE The present invention provides in a machine for the manufacture of cup-shaped packing containers of a heat shrink- able thermoplastic web material having a mandrel rotatable about its axis, means for intermittently rotating said mandrel, means for intermittently feeding a continuous web of the material to the rotatable mandrel, means for rotating the mandrel to wrap a blank of the material about the mandrel to form a sleeve-shaped shell having overlapping opposed edges and means for heat sealing the overlapping opposed edges of the blank together, the improve- ment comprising roller means for pressing the blank against the mandrel while said blank is being wrapped thereabout and pressure means for pressing together the overlapping edges of the blank when the edges are heat sealed together.

333896

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