Envelopes – wrappers – and paperboard boxes – Paperboard box – With closure for an access opening
Patent
1990-04-25
1991-04-09
Foster, Jimmy G.
Envelopes, wrappers, and paperboard boxes
Paperboard box
With closure for an access opening
206446, 220307, 229 55, B65D 502, B65D 564
Patent
active
050057596
DESCRIPTION:
BRIEF SUMMARY
1. Field of the Invention
The present invention relates to the field of packaging and more particularly to snap-lock boxes consisting of a sleeve interacting with at least one stopper.
2. Description of Background and Relevant Material
Packaging systems intended to pack and to protect products are generally produced in a very simple manner from a cardboard blank, sometimes decorated, having a base and a lid.
In certain embodiments the cardboard used, which is relatively flexible, does not ensure satisfactory resistance both to compression, in the region of the lateral walls, and to crushing when the products are stacked, which poses problems of the contents being damaged or storage problems.
Since the packaging is obtained from a single cardboard blank, it is necessary to provide lateral extensions for the lid and the base, which considerably increases the surface area of cardboard required to obtain the appropriate blank.
Lastly, closing of the box is generally performed by adhesive bonding, or even simply by inserting a tongue of the lid, which does not ensure the locking and hence the impregnability of the packaging. Impregnability of the packaging is increasingly desirable, especially in supermarkets.
SUMMARY OF THE INVENTION
The object of the present invention is to provide a snap-lock lock box capable of being used, but not exclusively so, for the packing of bottles, which permits the above-discussed disadvantages to be overcome.
A first object of the invention is to provide a lockable packing box of an impregnable nature, which permits access to the product only by damaging the packaging.
Another object is to produce a packing combining the wedge-fastening of the contents and satisfactory resistance to compression.
According to the invention, the snap-lock box consists a cardboard sleeve and of at least one separate stopper having, on its flanks, lugs which interact with anchoring means arranged on at least one of the ends of the cardboard sleeve.
Still according to the invention, the sleeve is formed from a single cardboard blank comprising, for example, four lateral walls extended, over at least one side forming an end, by anchoring means in the form of locking tabs. When the box is shaped, these tabs are intended to be folded back towards the inside in order to interact with the lugs of the stopper.
According to a particular arrangement, the locking tabs have notches which interact with the lugs of the stopper in order to achieve the locking of the whole.
Still according to another object of the invention, the stopper intended to form the base and/or the lid of the box consists of a central body whose shape enables it to enter inside the end of the sleeve, and of a flat surface, forming a cap or base, integral with the central body and resting against the edge of the end of the sleeve. The size of this flat surface corresponds at least to that of the sleeve.
According to another arrangement of the invention, the central body of the stopper is recessed and the shape of this recess is well-shaped or matched to the contents so as to achieve its wedge-fastening.
To effect correct locking, the lugs of the stopper are hook-shaped and have a triangular appearance.
By this group of features, which can be employed individually or in combination, the invention enables a packaging to be obtained which effectively protects the products from any damage as a result of the stoppers conferring upon the packing a good resistance and ensuring a correct and accurate wedge-fastening of the products.
This type of box also permits savings in cardboard to be made and ensures a definitive closing which can only be removed by damage.
BRIEF DESCRIPTION OF DRAWINGS
The invention will be further illustrated, without being limited in any way, by the following description of some embodiments, given by way of example, and shown in the attached drawings, in which:
FIG. 1 is a perspective view of the box according to the invention equipped with two stoppers, one forming the base and the other the lid,
FIG. 2 is a view of
REFERENCES:
patent: 560227 (1896-05-01), McKenzie et al.
patent: 597726 (1898-01-01), Lovell
patent: 2025589 (1935-12-01), Huye
patent: 2456841 (1948-12-01), Rushing
patent: 2726803 (1955-12-01), Ketler
patent: 2974825 (1961-03-01), Ross
patent: 3851812 (1974-12-01), Bittel
patent: 3941300 (1976-03-01), Troth
patent: 4438864 (1984-03-01), Helms
patent: 4801039 (1989-01-01), McCall et al.
A copy of the International Search Report and Annex.
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