Machine for the manufacture of packing containers

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

1976-09-03

1978-03-07

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With bending, folding, winding, or wrapping means

53 30S, 156 85, 156 86, 156217, 156218, 156499, B29D 2300

Patent

active

040778290

ABSTRACT:
A machine for transforming heat shrinkable thermoplastic material into sealed and liquid-filled containers in which the material in strip form is cut off to a suitable length then heated and transformed into a tube-shaped shell blank on a mandrel with an overlapped longitudinal heat-sealed seam. The shell is then displaced in relation to the mandrel so that its bottom end extends beyond the end of the mandrel, a base blank cut from another strip is then inserted into the end of the shell to rest against the mandrel end, and the shell and inserted base are then heated causing the shell to shrink accurately to the shape of the mandrel and the bottom edge zone of the heated shell to be folded in against the end of the mandrel and the edge of the base. The joined edge zones of the shell and base are then pressed together and heat sealed. The container is then passed to a filling machine where it is filled and closed by a lid.

REFERENCES:
patent: 3967991 (1976-07-01), Shimano et al.
patent: 3969173 (1976-07-01), Amberg et al.
patent: 3970492 (1976-07-01), Amberg et al.

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