Liquid packaging container with filmed-over notches

Details Liquid packaging container with filmed-over notches Liquid packaging container with filmed-over notches

1982-03-05

1988-03-01

Marcus, Stephen

Envelopes, wrappers, and paperboard boxes

Paperboard box

Box material includes a coating or a nonpaperboard...

229 48T, 229184, B65D 562

Patent

active

047280247

ABSTRACT:
In a die-cut cardboard blank coated on at least one side with plastic and/or aluminum foil and capable of being folded into a liquid packaging container having a planar, rectangular folded bottom sealed in a liquid-tight manner with an overlapped seam and a protected edge on the inner bottom fold-in panel, the improvement which comprises providing the blank with an inner bottom fold-in panel having in its marginal area a die-cut notch extending beyond the visible area when folded, this notch being filmed over with the coating material. Alternatively, the blank may be provided with an inner bottom and triangular fold flaps, the triangular fold flaps having tips which in folded condition abut one another and cover the inner bottom fold-in panel, the tips being die-cut and filmed over with coating material.

REFERENCES:
patent: 3412922 (1968-11-01), Muller et al.
patent: 3421678 (1969-01-01), Thompson et al.
patent: 3913825 (1975-10-01), Brownlee et al.
patent: 3913826 (1975-10-01), Brownlee et al.
patent: 3942708 (1976-03-01), Christensson

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