Envelopes – wrappers – and paperboard boxes – Paperboard box – With closure for an access opening
Patent
1996-07-30
1999-03-02
Elkins, Gary E.
Envelopes, wrappers, and paperboard boxes
Paperboard box
With closure for an access opening
2291601, B65D 542
Patent
active
058759603
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to paperboard cartons for packaging granular detergent products. The invention is further related to such cartons which are have a re-closable lid, and which lid opens fully and remains open fully without springing on its own back toward the closed position, which permits easier dispensing of the granular detergent product from the carton.
BACKGROUND OF THE INVENTION
Many products are provided to consumers in granular form, such as detergent granules or powders. Such products are generally used in large volumes, so there is substantial interest and benefit in making cartons for such granular detergents from paperboard or other renewable and less expensive material. All-paperboard cartons for packaging and dispensing detergent granules are known, and include the tear-tape, side fill paperboard carton of Japanese Patent Application H3-506106, filed Mar. 1, 1991 in the name of Procter & Gamble Company, and the re-fill carton of Japanese Utility Model Application H3-063669, filed Aug. 12, 1991, in the name jointly of Dai Nippon Printing and Procter & Gamble Far East Inc. Nonetheless, such cartons are not completely satisfactory, and there remains a need for further improvements in the closing of and the dispensing from such cartons.
SUMMARY OF THE INVENTION
The present invention provides a paperboard carton for packaging and dispensing granular detergent comprising a box comprising a back panel and a front panel, and having a top opening, and a lid integrally attached to the back panel along a first score line. The carton is characterized wherein the back panel comprises at least one additional score line parallel to and spaced apart from the first score line, and a slit substantially through the back panel at each side edge of the back panel from the first score line to the additional score line. Preferably, the spaced apart distance is from about 5 mm to about 15 mm, preferably about 10 mm; preferably the slit from the first score line to the second score line is along a diagonal line forming an angle with vertical from about 15.degree. to about 60.degree., preferably about 30.degree.-45.degree.; and preferably the slit is made completely through the thickness of the paperboard.
The carton can have other optional features found commonly in conventional paperboard cartons, such as one or more lines of weakness across one or more panels of the carton to facilitate collapsing of the carton after the product is completely used up, for compact and easy disposal. Also, tear strips, which are well-known in the art, can be employed.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a perspective view of the back and left side panels of a paperboard carton with the lid in the closed position.
FIG. 2 shows a perspective view of the front and right side panels of a paperboard carton with the lid in the open position.
FIG. 3 shows a plan view of the blank used to make a carton of the present invention.
FIG. 4 shows another embodiment of a paperboard carton with a reclosable lid.
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 and FIG. 2 show a carton 1 with a box 2 and a lid 20. The box has a front panel 3, a back panel 4, and side panels 5 and 6. The box has a top opening 7 as shown in FIG. 2. The box 2 of the carton is folded and sealed in such a way to prevent the flow of granular detergent out of the enclosed box prior to opening so as not to lose any granular detergent product and create a mess.
The lid 20 is integrally attached to the back panel along a first score line 21. The back panel 4 also has at least one additional score line 40 which is parallel to and spaced apart from the first score line 21, and two slits 41a, 41b substantially through the back panel 4 at each side edge of the back panel, from the first score line 21 to the additional score line 40. The slits are cut very fine to prevent any leakage of granular detergent through the fine slit when the lid is in the closed position over the opening 7.
A suitable type of paperboard is that refer
REFERENCES:
patent: 3171600 (1965-03-01), Michalka
patent: 3486682 (1969-12-01), Mahon et al.
patent: 4215810 (1980-08-01), Zicko
patent: 4266713 (1981-05-01), Maroszek
patent: 5476218 (1995-12-01), Reisman
Elkins Gary E.
Koch Elizabeth M.
The Procter & Gamble & Company
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