Making of containers with tri-laminated end walls

Details Making of containers with tri-laminated end walls Making of containers with tri-laminated end walls

1980-09-29

1982-08-24

Coan, James F.

Manufacturing container or tube from paper; or other manufacturi

Container making

Rigid container

493131, 493174, B31B 146

Patent

active

043459056

ABSTRACT:
A machine for forming a container with full width 3-ply laminar end walls from a preformed cardboard container body blank having side and outer end wall ply forming panels along the sides and ends of a bottom forming panel and inner end wall ply forming panels extending endwise from the ends of the side wall panels. The machine erects and seals the body blank with a mandrel and forming die to form a finished container by applying glue to selected end wall panel surfaces, folding the inner end wall panels upwardly relative to the side wall panels, and then folding the side and outer end wall panels in succession to upright positions relative to the bottom panel to upstanding side by side positions inwardly of the outer end panel with the confronting end panel surfaces in mutual adhesive bonding contact. The forming die comprises a pair of reciprocable die plates and a set of folding shoe means, including extendable and retractable, all of which elements are actuated in a timed relation to movement of the mandrel into and out of the die cavity.

REFERENCES:
patent: 3029712 (1962-04-01), Dunn
patent: 3456563 (1969-07-01), Roesner et al.
patent: 3513757 (1970-05-01), DiFrank
patent: 3635129 (1972-01-01), Cobelo, Jr.
patent: 3978774 (1976-09-01), Royal

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