Envelopes – wrappers – and paperboard boxes – Paperboard box – With closure for an access opening
Patent
1995-11-29
1997-04-29
Elkins, Gary E.
Envelopes, wrappers, and paperboard boxes
Paperboard box
With closure for an access opening
220337, 220339, B65D 566
Patent
active
056240708
DESCRIPTION:
BRIEF SUMMARY
The present invention is concerned with a reusable packaging box, in the shape of a rectangular parallelepiped, including four lateral walls joined together so that the lateral periphery of the box is closed, as well as at least two cover parts and at least two bottom parts, substantially rectangular, forming each one an edge with a respective lateral wall and having a free border parallel to this edge.
Such packaging boxes are generally manufactured from corrugated cardboard and their bottom and cover must be closed by self-adhesive tapes or by similar means. These known boxes can be reused only to a very limited extent, their properties and their appearance deteriorating rapidly owing to the manner in which they have to be closed.
SUMMARY OF THE INVENTION
The present invention is aimed at remedying this drawback and at providing a packaging box which can be closed or opened without using external means and without damaging the surface of the box. The invention is equally aimed at providing a robust multiple-use box, with possibilities of use, of manufacture and of recycling making significant cost savings possible and contributing to the protection of the environment.
To this end, the box according to the invention is characterized in that the free borders of the cover and/or the bottom parts include each a profile of a cross-section and construction such that these free borders can be joined by the interlocking of one profile with the other.
Such a box can be advantageously made of a plastic material from a sheet obtained by extrusion, with the profiles being integral with the borders to be joined together. The box according to the invention can also be made of corrugated cardboard, said profiles made of a plastic material being fastened to the borders to be joined together.
DESCRIPTION OF THE DRAWINGS
Other characteristics, aims and advantages of the invention will become more clearly apparent from the following description of non limiting exemplary embodiments, illustrated by the annexed drawing in which:
FIG. 1 is a schematic perspective view of a packaging box according to the invention;
FIG. 2 is a cross-sectional view of the borders of two cover or bottom parts;
FIG. 3 is a cross-sectional view of another embodiment of these borders, and
FIG. 4 is a cross-sectional view of an embodiment of a profile designed for fastening to the border of the two cover or bottom parts.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
The box represented schematically in FIG. 1 is made, for example, of a synthetic material such as polypropylene or polyethylene, from a sheet obtained by extrusion and cut out in the usual manner. These sheets can have, in cross-section, a structure similar to that of corrugated cardboard or include inner and outer layers of different materials.
The box of FIG. 1 shows four lateral rectangular walls 1 to 4 joined together after folding along their vertical edges, in such a manner as to produce a closed periphery. The cover and the bottom of the box include two respective parts 5, 6 and 7, 8 which will be closed outside, as well as two inner parts folded down in the direction perpendicular to that of parts 5 to 8, namely the parts 9 and 10 for the cover and 11 and 12 for the bottom of the box.
The parts 5 and 6 show free borders 5a and 6a which include respective profiles, such as shown, for example in FIG. 2. These profiles are integral with the sheet used for the manufacture of the box which can have a structure similar to that of a corrugated cardboard box.
The profiles forming the borders 5a and 6a can have, in cross-section, the shape of a hook, such as shown in FIG. 2. This configuration makes it possible to join together the two borders by interlocking the hooks one with the other, the curved part 6b fitting in this case into the recess 5b of part 5. To close the box, one only needs to bring together the borders 5a and 6a in such a manner as to ensure this interlocking, the flexibility of the lateral walls 1 and 3, to which the parts 5 and 6 are connected, making it possible, o
REFERENCES:
patent: 889109 (1908-05-01), Davidson
patent: 1483175 (1924-02-01), Guenther
patent: 2256834 (1941-09-01), Mandel
patent: 2605926 (1952-08-01), Casey
patent: 4163496 (1979-08-01), Dogliotti
patent: 4333602 (1982-06-01), Geschwender
patent: 4917291 (1990-04-01), Saiki et al.
patent: 5076460 (1991-12-01), Hussell
Browning Clifford W.
Elkins Gary E.
Tramapack S.A.
LandOfFree
Reusable packaging box does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Reusable packaging box, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reusable packaging box will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-700501