Envelopes – wrappers – and paperboard boxes – Envelope
Patent
1990-03-19
1991-06-18
Elkins, Gary E.
Envelopes, wrappers, and paperboard boxes
Envelope
229 69, 229 875, B65D 2714
Patent
active
050243730
ABSTRACT:
Container made up like an envelope, obtained by folding a stamped blank of paper or similar material and comprising: a front sheet; a back sheet connected therewith by means of a first folding line; a flap connected with the front sheet by means of a second folding line which runs parallel to the first folding line, said flap at least partly overlapping the back sheet; and side strips which are connected with the front sheet by means of longitudinal folding lines perpendicular to said first folding lines, the edges of the back sheet being adhered thereto by means of a permanent gum path. In order to enable pouring out pulverized or granular products, the front and back sheets (1, 2) are substantially of the same size, and comprise two pairs of crease lines (13), which, after manufacturing the envelope, substantially extend from the center (14) of the second folding line (8) to the points of intersection (15) of the first folding line (7) with the longitudinal folding lines (6).
REFERENCES:
patent: 1980953 (1934-11-01), Kilmer
patent: 2671602 (1954-03-01), Vogt
patent: 3848356 (1974-11-01), Wylie et al.
Elkins Gary E.
Ghafoerkhan Shafiq M.
Pascua Jes F.
Power Pack International B.V. i.o.
Riel Leslie L.
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