DE2834418A1 - Stackable and erectable box construction - has two double hollow sidewalls with inside sections glued to lugs in base - Google Patents

Abstract

The stackable and erectable box is pref. of cardboard, comprising a single sheet with a base surface and pairs of opposite parallel sidewalls. Corner attachment lugs with diagonal folds are joined by fold lines to the ends of the sidewalls in the first pair, their outermost portions being glued to the outsides of the second pair. Each of the second sidewalls is a double-walled hollow section, formed by an outer wall attached to the base along a fold line, an inner wall parallel to it, and an intermediate strip joining the two along the top by means of tear lines so as to hold them apart. The inner wall is glued at its free edge to lugs cut out of the base surface, and has at each end a locking lug engaging in a corresponding opening stamped out of the adjacent first wall and having a stop edge.

Description

"Stackable box"

The invention relates to a stackable erect box, preferably made of solid cardboard, consisting of a one-piece cut with a bottom surface as well a pair of opposite and parallel to each other first and second side walls, in which at the longitudinal ends of the first side walls Each corner connecting tabs with a diagonal bend are deflected via bending lines are whose parts separated by the diagonal bend and directed outwards as adhesive flaps for a material connection with the outside of the second side walls are provided.

Such a stand-up box, also known as a crate, can under serve, among other things, pressure-sensitive goods, for example quark or cheese or appropriate containers to be packed. The erecting box must then both the internal pressure resulting from the weight of the packaged goods as well as the stack pressure possibly additional ones on the box Withstand boxes can. Boxes with simply doubled side walls have therefore been built at so those adjoining parts of the respective blank flat on top of each other lie. These double side walls can withstand increased stacking pressure, However, it is difficult to find suitable supports at the top of each box or box. To create risers that prevent the respective overhead riser from being immediately presses on the contents of the lower tray.

Otherwise, by simply doubling all or part of it the side walls, the resistance of the box to the internal pressure not sufficiently increased for many applications. The stability of the erecting box Although the use of particularly strong cardboard can improve the cost of materials and possibly also the packaging weight increase in an unacceptable manner at.

The invention is based on both the individual stability as well as the stacking stability of those mentioned above, preferably for packaging relatively high specific gravity for pressure-sensitive goods.

Erector boxes or crates by essentially purely constructive Measures to improve. So the stability of the new box is not supposed to go through Increasing the strength and strength of the fabric used to produce the blank but by a special shape of the erected box or

Rise reach.ht-or. guaranteed.

To the one-piece erecting box or crate made from a floor area as well as one pair each opposite and to each other run parallel to the first and second side walls is to be made the inventive solution to the problem is that each of the second side walls is designed as a double-walled hollow profile that the hollow profile from one to the Floor area outer wall articulated via a bending line, one parallel to the outer wall running inner wall and one on the top edge of the box, the adjacent longitudinal edges of the outer and inner wall via scoring lines and connecting these walls at a distance holding intermediate web consists that the inner wall in the area of its free longitudinal edge cohesively connectable with adhesive flaps cut out of the bottom surface respectively.

is connected and that at the two longitudinal ends of each inner wall in in the vicinity of the intermediate web, in the upright position, into a corresponding, a cutout of the adjoining first side wall having a stop edge that engages Locking nose is cut.

In that the one pair of opposing side walls as a hollow profile construction, d. H. as it were as a box profile with (flatter) Cuboid shape is also used without increasing the stability of the surface Cardboard material, both inherent stability and stacking stability are considerable improved. As a particular advantage of the erect box according to the invention comes added that the hollow profile of a pair of side walls is an ideal support in the stacking association represents. Depending on the type and direction of the expected load, the hollow profile-like side walls, the front sides or the long sides of the upright form box.

According to a further invention, it can be advantageous if the bending lines between the longitudinal ends of the first side walls and the corner connection tabs articulated thereon by about 10 to 20 from the right angle to the baseline of the first side walls are distracted outside. This creates a conical widening of the box opening Achieved towards the top and thus facilitates the stacking of several boxes. A further improvement in this sense results, albeit with the diagonal bends in the connecting straps opposite those between the first side walls and the about 10 more than bending lines lying on it at the steered corner connection straps 450 are deflected outwards. Because of the conical shape achieved on all sides Widening the box towards the opening, the abutting Parts of the first longitudinal walls and the attached corner connection straps than stacking nozzles or stacking corners protruding over the upper edge of the second side walls use. When stacking, the individual boxes can then be partially nested in one another be that the respective box bottom on the upper edges of the ausgebilde.ten as a hollow profile second side walls rests and those of the first side walls and the hinged thereon Support stacks formed by corner connection tabs prevent stacked ones on top of each other Rise against each other.

The erected state of the boxes according to the invention is advantageous thereby secured or stabilized that the as an abutment of the locking lugs Inner walls provided stop edges of the cutouts set in the first side walls when erect with a corresponding to the material elasticity Restoring force apply tightly to the locking lugs. The stop edges. the Punchings should therefore be chosen expediently so that the locking lugs under a certain restoring force of the hollow profile-like doubled side walls tight rest against the stop edges. This allows the two wall parts of the second Side walls at right angles to the floor surface or slightly to the outside, as desired be aligned inclined.

For easy erecting of the box and secure locking the locking lugs can be in the cutouts of the adjacent first side walls It would also be advantageous if the delimiting sections of the punched-out areas via which the stop edge provided for the respective locking lug forms Cut out in such a way that the stop edge itself is the leading edge acts like a spring. Furthermore, it can be beneficial in this context if the bending lines between the first side walls and those hinged at their longitudinal ends Corner connection tabs in the cutouts corresponding to the locking lugs adjacent area are intersected. This causes an unintended deformation the punchings that are caused by the force of the locking lugs could be avoided.

If the inner walls of the second side walls are slightly, in particular be made shorter than the associated outer walls by roughly the same size as a wall thickness, the box can be erected more easily and the result is an extraordinary one stable parallelogram, which when erecting the box which represents the hollow profile forming the second side walls.

The erecting box or crate according to the invention is constructed in such a way that that they are in the fully glued state with side walls lying flat on top of one another is collapsible. In order to avoid that in this collapsed state Bend locking lugs cut on the longitudinal ends of the second side walls or kink, it is advantageous according to a further invention if adjacent to the bottom surface are provided in the first side walls, in which the locking tabs of the folded, already glued box engage can.

Based on the schematic representation of an exemplary embodiment further details of the invention explained. They show: FIG. 1 a lying flat Cutting of the erecting box; and FIG. 2 shows an erected box in perspective Opinion.

The erecting box according to FIGS. 1 and 2 consists of the bottom surface 1, two simple end faces 2 and two according to the invention doubled as a hollow profile formed longitudinal sides 3. The longitudinal sides 3 are each composed of an outer wall 4, one Inner wall 5 and an intermediate web 6 is put together. The intermediate web 6 connects the inner wall 5 is articulated to the outer wall 4 via scoring lines 7 and 8. It should be noted that the long and short sides can also be exchanged, so that the end faces have the hollow profile and the long sides are simple.

At the two longitudinal ends of the end faces 2 according to the embodiment corner connection tabs 9 are articulated via a bend 10 each. These bends 9 are preferably by -1 to 20 from the right angle to the base line 11 of the end faces 2 deflected outwards. The corner connection tabs 9 are made by diagonal bends 12 interrupted. Several short cuts can also be made in the diagonal bends 12 lie. Preferably, the diagonal bends 12 are opposite to the corner connecting Bends 10. Another 10 deflected outwards more than 450.

It is thereby achieved that the packaging towards the opening on all sides is conically widened. The through the diagonal bends 12 separate, outwardly directed parts of the corner connection tabs 9 serve as adhesive tabs 13th

The inner walls 5 of the hollow longitudinal sides 3 wear on both of them Longitudinal ends each locking nose or. -projections 14, which in the erected state of the box into corresponding punched-outs 15 in the end walls 2. the Stop edges 16 of the cut-outs provided for applying the locking lugs 14 15 are expediently chosen so that, under a certain restoring force, the doubled Longitudinal walls 3, the locking lugs 14 lie tightly against the stop edges 16 and thus the hollow profile-like longitudinal sides 3 advantageously at right angles to Floor surface 1 or are set inclined slightly outward.

Tabs 17 are cut into the bottom surface 1 at four or more points and articulated with one bend 18 each. According to the invention, these tabs 17 should also the outside of the inner walls 5 are firmly connected. The distance of the Bends 18 of the tabs 17 from the-at the boundary between the outer walls 4 and the bottom surface 1 provided bend 19 is approximately the distance between the Between web 6 delimiting scoring lines 7 and 8 correspond. The inner walls 5 of the Long sides 3 doubled like a hollow profile are appropriately kept slightly shorter than the associated outer walls 4. This creates a parallelogram, which when erecting the box, the hollow longitudinal walls 3 are formed.

In the end faces 2 should also be at the border to the Bo floor area 1 semicircular cutouts 20 may be provided, in which when already glued but collapsed The locking tabs on a flat, flat box 14 can intervene in such a way that the latter does not kink when the box is lying flat or bent. can be.

To produce the in Fig. 2 in the erect state in perspective The box shown is first the inner walls 5 at the score lines 7 around 1800 struck.

The Klebeleschen 13 formed by the diagonal bends 12 are then folded around 1800 at its diagonal bend. Finally the whole corner connection tabs 9 turned over at the bends 10, and the adhesive flaps 13 are glued.

The second handling process according to the invention also takes place in the same way doubled Langa sides 3. ' These are around 1800 over the one adjacent to the floor area 1 Bending line 19 folded and finally unfolded with the glued from the base area 1 Lugs 17 glued.

Thereupon the already glued adhesive tabs 13 are through on the outside Folding the end faces 2 over their bending lines adjoining the bottom surface 1 11 connected to the outer walls 4 of the hollow longitudinal sides 3 in a form-fitting manner.

It may be useful to have 2 partial on the upper edges of the end faces Provide cutouts 21, the lower limit of the height of the doubled longitudinal sides 3 can correspond. This means that stacking supports or

Stacking corners 22 created in the area where the end faces 2 collide with the corner connection tabs 9 hinged thereon, For easy erecting and secure locking of the locking lugs 14 into the cutouts 15, it is also advantageous if the delimiting cuts 23 of the punchings 15 extend slightly beyond the cut forming the stop edge 16, whereby a kind of spring 24 is created. Unintentional deformation of the cutouts 15 is avoided if the at the border between the end faces 2 and the 3ckverbindungslaschen 9 provided bends 10 in the area 25 of the punchings 15 are cut through.

Claims (8)

stackable box "P a ~ t e n t a n s» rü c h e 1. Stackable Erection box, preferably made of solid cardboard, consisting of a one-piece Cut with a base area and a pair of opposite sides and first and second side wound running parallel to one another, in the case of an the longitudinal end of the first side walls each have a diagonal bend having corner connecting tabs are articulated via bending lines, whose separated by the diagonal bend, according to outwardly facing parts as adhesive flaps for a material connection with the outside of the second side walls are provided, characterized in that each of the second Side walls (3) is designed as a double-walled hollow profile that the hollow profile from an outer wall hinged to the bottom surface (1) via a bending line (19) (4), an inner wall (5) running parallel to the outer wall (4) and one on the Top edge of the box the adjacent longitudinal edges of the outer and inner walls (4, 5) Via incised lines (?, 8) connecting and keeping these walls at a distance between them Web (6) consists that the inner wall (5) cohesively in the region of its free longitudinal edge connectable or connected to adhesive tabs (17) cut out of the bottom surface (1) is and that at the two longitudinal ends of each inner wall (5) near the intermediate web (6) one in the upright state in a corresponding, a stop edge (16) having punching (15) of the adjacent first side wall (2) engaging Locking nose (14) is cut. 2. Box according to claim 1, characterized in that the bending lines (10) between the longitudinal ends of the first side walls (2) and those hinged to them Corner connection straps (9) at about 1 to 20 from the right angle to the base line (11) the first side wall (2) are deflected outwards. 3. Box according to claim 1 or 2, characterized in that the Diagonal bends (12) in the corner connection tabs (9) opposite the between the first side walls (2) and the corner connecting tabs (9) hinged to them Bending lines (10) are deflected outwards by about 10 more than 450. 4. Box according to one or more of claims 1 to 3, characterized characterized in that as an abutment of the locking lugs (14) of the inner walls (5) provided stop edges (16) located in the first side walls (2) Punchings (15) in the erected state with an elasticity corresponding to the material Restoring force apply tightly to the locking lugs (14). 5. Box according to one or more of claims 1 to 4, characterized characterized in that the boundary cuts (23) with the locking lugs (14) corresponding cutouts (15) over which the å respective stop edge (16) reaching out forming cut (23). 6. Box according to one or more of claims 1 to 5, characterized characterized in that the bending line (12) between the first side wall (2) and the at the longitudinal end of the steered corner connection tab (9) in the at the cut-out (15) corresponding to the respective locking lug (14) Area (25) is intersected. 7. Box according to one or more of claims 1 to 6, characterized characterized in that adjacent to the bottom surface (1) in the first side walls (2) Punchings (20) are provided, in which when already glued and folded Condition of the box attached to the longitudinal ends of the inner walls (5) of the second side walls (3) engage the riveted locking lugs (14). 8. Box according to one or more of claims 1 to 7, characterized characterized in that the inner walls (5) of the second side walls (3) slightly, in particular by about the length of an IZand thickness, are shorter than the associated Outer walls (4).