Envelopes – wrappers – and paperboard boxes – Paperboard box – Nonunitary – peelable closure or securing element
Patent
1987-07-20
1991-03-12
Elkins, Gary E.
Envelopes, wrappers, and paperboard boxes
Paperboard box
Nonunitary, peelable closure or securing element
220359, 22912514, B65D 570
Patent
active
049986686
ABSTRACT:
A pack for liquids is made at least partially from cardboard or the like, which is impervious to liquid at least on its one surface, by virtue of a plastics coating. The pack has side walls (1-3), a bottom and a top wall (1), which are connected together at least partially by fold (9) and/or sealing seams (4), a tear-open pouring opening (6) which is disposed in the top wall (1) adjacent the edge line (9) and which is preferably covered over by a tear-off cover strip (7) and a pouring edge (8) which is disposed in one plane with the top wall (1). A separate plastics strip (10) is sealed in position in the region of the pouring opening (6), covering over same, and extends beyond the edge line (9) of the top wall (1) with an unsealed end (11), forming a pouring edge (8), and the surface of the plastics strip (10), which covers over the pouring opening (6), is stamped out, exposing the opening (6), and is laid over around the edge (12) of the opening and is sealed in position from the underside.
REFERENCES:
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patent: 4170314 (1979-10-01), Weierman et al.
patent: 4223789 (1980-09-01), Reil
patent: 4397401 (1983-08-01), Ueno et al.
patent: 4544093 (1985-10-01), Stark et al.
Dunn Michael L.
Elkins Gary E.
Ellis Howard M.
Tetra Pak International AB
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