Packaging for liquids and process and apparatus for its manufact

Details Packaging for liquids and process and apparatus for its manufact Packaging for liquids and process and apparatus for its manufact

1986-04-11

1988-03-15

Little, Willis

Envelopes, wrappers, and paperboard boxes

Paperboard box

With closure for an access opening

22912533, 22912534, 220359, B65D 572

Patent

active

047307692

ABSTRACT:
Described is a packaging for liquid, made of cardboard, which is made impermeable to liquid by means of a plastic coating over its surface. It has side-walls, base and top wall (5), connected to one another by folded and/or sealed seams. A pouring aperture is located in top wall (5) close to the edge line, and can be torn off and has a separate plastic strip (8) covering the pouring aperture and being applied round the edge of the pouring aperture, and is sealed on at least from the inside.
So that the edge of the pouring aperture remains covered with a protective layer after opening and so that the closure and the protective layer can be produced with simple means, according to the invention the plastic strip (8) covers the pouring aperture tightly and is fixed via two tacked strips (7, 31) to an outer cover strip, in which a hole (15) is located above the pouring aperture, the two tacked strips being smaller than the surface area of cover strip (6), the first tacked strip (7) being applied at a distance from hole (15) and outside the pouring aperture, the second tacked strip (31) being applied outside hole (15) of cover strip (6) and within the pouring aperture (16), the outer cover strip (6) being fixed to the top wall (5) of the packaging via a third tacked strip (9) lying outside the plastic strip (8).

REFERENCES:
patent: 3389827 (1968-06-01), Abere et al.
patent: 3613986 (1971-10-01), Christensson
patent: 3900155 (1975-08-01), Rausing et al.
patent: 4372460 (1983-02-01), Brochman et al.
patent: 4585498 (1986-04-01), Lagerstedt et al.

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