NL9202028A - Ready box. - Google Patents

Description

Ready box.

The invention relates to a ready-to-use box, that is to say a cardboard box that is folded together from a blank and is supplied in a folded state, so as to take up as little space as possible when unloaded, to gardeners, for example. The latter, when the box needs to be loaded, convert the box into a fully-fledged, sturdy box with a few simple steps. The distinctive and essential advantage of such a ready-to-use box is that the customer does not need to have machines for setting up boxes from blanks, but still spends little space on storing the (folded) boxes.

Have a ready-to-use box that proves to meet the requirements of the box, such as (despite the box being made of cardboard) high compressive strength (due to stackability) and resistance to moisture (due to storage in wet flow cooling ), is available from the applicant and is described, inter alia, in European patent application 0.485.032.

This known stackable cardboard set-up or ready-to-use box comprises a rectangular bottom, a pair of side walls connected to the bottom by folding lines and a pair of longitudinal walls connected to the bottom by folding lines, the longitudinal walls being provided with folding lines running at 45 ° to the corners of the bottom. for enabling the box to be held in a flat collapsed condition and set up in a ready-to-use condition, the side walls at their both ends merging into extension strips by folding lines, each of which is four angularly connected by folding lines - include reinforcement strips, the first (in the blank) of which the corner reinforcement strip closest to the side wall is adhered to the inner surface of the adjacent longitudinal wall and the fourth, extreme corner reinforcement strip is adhered to the relevant side wall and with its end edge located near the respective corner point is. The corner reinforcement strips form a kite in the assembled state of the box. In order to prevent material build-up near the corner points in the collapsed state of the box, the corner sleeve is then folded in such a way that the aforementioned first and fourth corner reinforcement strips lie on top of each other and the two second and third corner reinforcement strips located between them, so that the corner tube is two layers thick when folded.

When the user, for example a gardener, wants to put the box on, he grabs the side walls by means of handles provided therein and puts the side walls upright as much as possible. The two longitudinal walls will thereby be pulled upwards, and will unfold around the aforementioned diagonal folding lines in the longitudinal walls, among other things. Then the gardener takes hold of both longitudinal walls to put them completely upright. As a final operation, in order to maximize the useful loading area or useful loading space of the box, the gardener will press the now upright corner sleeve at the location of the fold line between the second and third corner reinforcement strips to move these strips through a dead position to the corner points by folding. To make this possible, the widths of the second and third corner reinforcement strips are smaller than the widths of the aforementioned first and fourth corner reinforcement strips. Seen in cross-section, the aforementioned kite shape is converted here from a kite in which the intersection of the diagonals is located within the kite surface to a kite, whose intersection point is outside the kite surface. An additional advantage of this is that more material, in the form of the second and third corner reinforcement strips, is present close to the place where the forces are to be transferred.

It has been found to be of vital economic importance for the user of the ready-to-use box to further simplify setting up the ready-to-use box, which is already a simple process. Folding down the corner tubes, which still require four actions with four corner tubes, is experienced as a drawback.

The object of the invention is to provide a ready-to-use box, provided with corner reinforcements, which define a substantially kite-shaped space in cross section, but for which no additional operations are required during the set-up of the ready-made box from the collapsed state to the set-up state, but thereby avoiding doubling the amount of material in the corner tubes in the collapsed state.

A further object of the invention is to provide such a ready-to-use box, which can be mechanically and simply folded from a blank.

These and other objects are achieved with the standby boxes described in the appended claims.

The invention provides a stackable cardboard set-up or ready-to-use box, comprising a rectangular bottom, a pair of side walls connected to the bottom by folding lines and a pair of longitudinal walls connected to the bottom by folding lines, the longitudinal walls being provided at 45 ° to the corner points of the bottom running fold lines to allow the box to be set up from a flat collapsed state to a set-up, ready-to-use state, with the side walls at both ends passing through fold lines into extension strips securing strips and corner reinforcing strips for attaching adjacent side and longitudinal walls together to reinforce the corners of the set-up box, the extension strip comprising at least a first, a second, a third and a fourth corner reinforcement strip connected by folding lines, and wherein the second and third corner reinforcement strips have a equal width so that the fold line w with them connected to each other on the bisector plane of the respective corner, between which the side wall and the nearest first corner reinforcing strip there is located a fastening strip, which is connected by folding lines to the side wall and the first corner reinforcing strip, the first corner reinforcing strip is attached to the fastening strip and the fastening strip on the other side is attached, optionally indirectly, to the adjacent longitudinal wall, and the fourth corner reinforcement strip is fixed on the respective side wall and extends in the direction of the respective corner, the fastening strip being width greater than the joint width of the first and second corner reinforcement strips and the fold line between the second and third corner reinforcement strips is closer to the corner point than the chord extending the fold line between second corner reinforcement strip with the first corner reinforcement strip and the folding li between the third and fourth corner reinforcement strips.

In the ready-to-use box according to the invention, i.e. in the collapsed position thereof, the first and the second corner reinforcement strips can lie next to each other, against the mounting strip and also against the adjacent third and fourth corner reinforcement strip, so that in the collapsed condition corner reinforcement will be only three layers thick and when setting up the ready-to-use box the second and third corner reinforcement strips are already in the desired inwardly folded position.

According to a preferred embodiment of the standby box according to the invention, the fourth corner reinforcement strip is adhered with a cold glue on the inner surface of the adjacent side wall. This allows some displacement of the fourth corner reinforcement strip relative to the side wall concerned, while retaining a certain degree of adhesion, during folding of the readiness box. This avoids unwanted stresses during folding and, as will be explained below, during folding the folding line between the second corner reinforcing strip and the third corner reinforcing strip can maintain its position near the corner.

Preferably, the fourth corner reinforcing strip is provided with recesses on its bonding surface, for example a set of intersecting grooves, so that it is ensured that sufficient cold glue remains between the side wall and the fourth corner reinforcing strip during the application of pressing pressures when folding blank to ready box, in the especially those that are applied during the bonding of the fastening strip and the first corner reinforcing strip together.

According to a further preferred embodiment of the ready-to-use box according to the invention, the assembly of fastening strip and first corner reinforcing strip is provided on its underside with a locking projection and openings are correspondingly located in the fold line between the side wall and the bottom and the fold line between the longitudinal wall and the bottom arranged to receive the locking cam, respectively in the collapsed state and the mounted state.

In order to facilitate the conversion of the ready-to-use box from the collapsed state to the erected state, the bottom adjacent to the aforementioned recesses is provided with continuous cuts, which extend substantially in the direction of movement of the locking cam during the mounting operations.

The invention will now be further elucidated on the basis of an exemplary embodiment of a standby box according to the invention shown in the drawing. Figure 1 shows the blank of the exemplary embodiment of the standby box according to the invention; Figures 2A and 2B show, respectively, in cross-section a corner area of the standby box formed from the blank of Figure 1, in the collapsed and erected state of the standby box; and Figures 3, 3A and 3B show the ready-to-use box formed from the blank of Figure 1 during set-up.

The blank shown in figure 1 consists of a bottom 1, which is connected by folding lines 2 and 3 to two longitudinal walls 4 and by folding lines 5 and 6 is connected to two side walls 7. In the longitudinal walls 4, two are angled a of 45 ° running folding lines 8, which define substantially triangular flaps 9, which are folded with their outer surface against the outer surface of the rest of the longitudinal wall 4 during the conversion from the blank to the ready-to-use box.

It is noted that in the description below, the outer surface is the plane facing the rear of the plane of the drawing and the inner surface is the upwardly facing plane on the drawing. The longitudinal walls 4 are furthermore connected by means of folding lines 10 running parallel to the folding lines 2 and 3 to longitudinal wall reinforcement strips 11, which are folded with their top surface around the folding line 10 against the top surface of the rest of the longitudinal walls.

For the sake of clarity, not all parts in Figure 1 are provided with reference numbers. It will be understood that what applies for corner area A, for example, will also apply for the other three corner sections.

The right-hand side wall 7, which is equal to the left-hand side wall 7, is bounded in addition to by folding line 6 by two fold lines 12 and 13, which run vertically in the set-up condition of the ready-to-use box, as well as by a folding line 14, which is parallel to the folding line 6. The folding lines 12 and 13 are in the blank form in line with the folding lines 2 and 3. The side wall 7 is connected via the folding line 14 to a bridge 22, which is intended to be parallel to and above the bottom in the set-up condition of the standby box. 1 stretch out. The bridge 22 passes via folding lines 23, 24, which are an extension of the folding lines 12 and 13, into bridge strips 25, 26, which are intended to be attached to the longitudinal walls 4. The bridge 22 further comprises two folding lines 30 and 31 extending at an angle β of 45 ° with respect to the folding lines 23 and 24, which, together with the aforementioned diagonal folding lines 8, are prerequisites for the desired collapsibility and set-up of the standby box. In the collapsed and set-up condition of the standby box, the fold line 30 will be in the bisector plane of the corner enclosed by fold lines 2 and 6.

The left-hand side wall is in each case connected by means of the folding lines 12 and 13 to a fastening strip 34, which in turn is connected by a folding line 36 to a first corner reinforcing strip 18, which is connected by folding line to second corner reinforcing strip 19, which is connected by means of folding line 16 to third corner reinforcing strip , which is connected by means of fold line 17 to fourth corner reinforcement strip 21. The fold lines 12, 36, 15, 16 and 17 extend parallel to each other.

In the following, the width of the strips will mean the distance between the fold lines bounding the strip in question. The width of the mounting strip 34 is greater than the combined width of the first and second corner reinforcement strips 18 and 19.

The blank is converted into a collapsible ready-to-use box as follows. A corner area A, again noting that corresponding operations are performed in the other corner areas, the fastening strip 34 is coated on its inner surface with a layer of hot melt adhesive and the fourth corner reinforcing strip is formed on its inner surface, in which a pair of intersecting grooves 35 are formed, provided with a layer of cold glue. Then, the strips 18, 19, 20 and 21 are folded upwards around the fold line 35 to adhere the (previous) inner surface of the corner reinforcing strip 18 to the inner surface of the fastening strip 34. The strips 18 and 34 are then left on for a short time. clamped together, until the open time of the hot melt adhesive has passed. During this clamping, a compressive force is automatically exerted on the fourth corner reinforcing strip 21. If this strip 21 had also been provided with a hot-melt adhesive, this strip would be virtually fixed to the inner surface of the side wall 7 during this operation. This is prevented by using a cold glue, which has a long open time instead of a hot melt glue, and thus allows the later necessary (as will be explained below), displacement of the strip 21 relative to the side wall 7. Cold glues are generally known and are also referred to as PVA glues. In order to prevent the glue from being squeezed between the side wall 7 and the strip 21 during the aforementioned pressing, as a result of which insufficient adhesive force will later be present, the inner surface of the strip 21 is provided with a system of intersecting formed grooves 35 , to which the adhesive may diverge during pressing, and thus escape inwards instead of outwards.

The next step is now to grasp the adhered strips 34 and 18 and fold about the fold line 12 to a position substantially parallel and above the inner surface of the side wall 7. During this operation, the fact that the total width of the the strips 18 and 19 are smaller than the width of the strip 34, and the adhesion of the strip 18 to the strip 34 ensures that the strip 19 continues to extend substantially flush with the strip 34. During folding over the folding line 12, the folding line 16 will be moved from one side of the folding line 12 to the other side thereof. This movement is permitted because, as a result of the use of the cold glue, the strip 21 is not yet adhered to the side wall 7 but can still slide along it. When the fastening strip is then almost entirely above and parallel to the side wall 7, the situation is obtained, in which on top the strip 34 lies, underneath, parallel and next to each other the strips 18 and 19, and below that again, parallel and next to each other, the strips 20 and 21. The fold line 16 is located closer to the fold line 12 than the two fold lines 15 and 17. As a result, no action needs to be taken when the corner reinforcement strips 19 and 20 are folded down towards the corners when the ready-to-use box is set up later. .

Meanwhile, the longitudinal wall reinforcement strips 11 are also wrapped about their fold lines 10 against the inner surfaces of the longitudinal walls 4 and adhered thereto, and then the longitudinal walls 4 are folded about the respective fold lines 2 and 3 against the inner surface of the bottom 1. The triangular flaps 9 are then folded around the fold lines 8, so that the inner surface thereof is still facing upwards in a direction of the drawing.

Furthermore, the bridge strips 25, 26 are provided with hot-melt glue on their inner surfaces and folded around the folding lines 30, 31 to be adhered to the (previous) outer surface of the fixing strip 34.

Finally, on the inner surface of the triangular flaps 9 or on the (previous) outer surface of the bridge strips 25, 26, a layer of hot melt adhesive is applied and the side wall 7 with parts connected to it is folded as a whole around the fold line 6, around the bridge strips 25, 26 on the triangular flaps 9. It will be clear that the same procedure is followed on the left side of the blank.

The result is then a ready-to-use box when folded. By way of illustration, Figure 2A shows a cross section (for reasons of clarity without hatching) of the corner region A in the collapsed state, at least the part thereof which is located above the flap 9. It will be clear that under the flap 9 a part of the rest of the longitudinal wall 4 is located, possibly below that part of the strip 11, and then the bottom 1.

Going from bottom to top we see in figure 2A first the flap 9, then a layer of hot melt glue 45, then the bridge strip 25, then again a layer of hot melt glue 44, then the fastening strip 34, and then a layer of hot melt glue 43, with which the first corner reinforcing strip 18 is attached to the fastening strip 34. To the right of the first corner reinforcing strip 18 is the second corner reinforcing strip 19, which folds 16 to the third corner reinforcing strip 20 located above it, which again extends next to the fourth corner reinforcing strip 21, which is adhered with cold glue layer 42 to the side wall 7. It can be clearly seen that the folding line 16 is located near the folding line 12.

Before discussing the setting up of the collapsible ready-to-use box thus obtained, attention is first drawn to some protrusions and recesses or holes in the blank shown in figure 1.

The first recess that stands out is the recess 33 in the side wall 7, which recess serves as a handle during setting up the ready box and later moving the set up ready box.

Holes 28 are provided along the folding line 6 (and also folding line 5), which are intended for the projections 37 in the collapsed state of the ready-to-use box, which are formed on the fastening strip 34 and the first corner reinforcing strip 18, in the area adjacent to the folding line 36, to receive

At substantially the same distance from the corner point as the holes 28, holes 38 are provided along the folding line 2 and 3, which serve to receive the cams 37 in the set-up condition of the standby box.

Furthermore, the cutting lines 39, which form lips 39 'on the actual side wall 7 by cutting out the bridge 22, can be observed, wherein the lips 39' in the mounted condition of the ready box protrude straight upwards and fit into the aforementioned holes 28 of a to be placed above it, equal ready box, to keep it from shifting. The holes 28 thus have two functions, namely receiving the cams 37 in the collapsed state, and receiving the lips 39 'in the erected and stacked state. The recesses obtained in the bridge 22 by the cutouts 39 further serve to receive cams 27 formed on the fourth corner reinforcing strips 21, which in the mounted condition provide support to the lips 39 '.

Referring briefly to Figures 3, 3A and 3B, the conversion of the standby box from the collapsed state to the erected state is now discussed. In figure .3 the gardener puts his hands in both holes 33 and engages both side walls 7. By moving his hands apart, he pulls the two side walls 7 upwards in the directions C (figure 3) from the bottom 1, to a substantially vertical position. After this he engages both longitudinal sides 4 and pulls them apart in directions D (figure 3A), after which the box is set up. During the movements in the direction D, the flaps 9 and thereby the bridge strips 25 and the attached fastening strips 34 are forced outwards to a fully upright position. The cams 37 first emerge from the holes 28 and are dragged in the direction B along the inner surface of the bottom 1 to the holes 38 (see figure 1). In order to facilitate this movement and to leave the cams 37 intact as far as possible, two cuts 41 are provided in the bottom, which open into the hole 28, and a circular cut 40, which opens into the hole 38, is furthermore made. 40 and 41 are oriented substantially along the path B of the cam 37.

Once set up, corner area A has a cross section, again without hatching, shown in Figure 2B. The corner region A is unfolded here, wherein the fastening flap 9 is in line with the rest of the longitudinal wall 4, and is fastened to the fastening strip 34 and thus to the side wall 7 of the folding line 36 by means of the bridge strip 25. 18 back in the direction to the corner point, but at fold line 15, the second corner reinforcement strip 19 extends diagonally inward, at fold line 16 to merge into the third corner reinforcement strip 20, which again tapers to side wall 7 and turns into fold line 17 in the fourth corner reinforcing strip 21, which is attached to side wall 7 by means of or cured cold glue. It can be seen that the folding line 16 is closer to the corner point than the imaginary line connecting the folding lines 15 and 17, and that the second and third strips 19 and 20 with side wall 7 and mounting strip 34 define a kite shape. An optimum situation is thus achieved, for the ease of set-up, the storage space within the ready-to-use box and the power transfer in a stack of such ready-made boxes.

Claims (7)

1. Stackable cardboard set-up or ready-to-use box, comprising a rectangular bottom (l) r a pair of side walls (7) connected to the bottom by folding lines (5, 6) and a pair of longitudinal walls connected to the bottom by folding lines (2, 3) ( 4), the longitudinal walls being provided with fold lines (8) running at 45 ° to the corners of the bottom to allow the box to be set up from a flat, collapsed state to a mounted, ready-to-use state, the side walls at both ends via folding lines (12, 13) merge into extension strips connecting fastening strips and corner reinforcing strips (18-21) for respectively attaching adjacent side and longitudinal walls to reinforce the corners of the set-up box, the extension strip having at least a first (18), a second (19), a third (20) and a fourth corner reinforcement strip (21), which are connected to each other via folding lines (15, 16, 17), the second and the third corner reinforcement strip (19, 20) of equal width so that the fold line (16) through which they are connected to each other lies in the bisector plane (EE) of the respective corner, between the side wall (7) and the nearest first corner reinforcement strip (18) is a fastening strip (34) and is provided via folding lines (12; 36) is connected to the side wall and to the first corner reinforcement strip (18), the first corner reinforcement strip (18) being bonded to the mounting strip (34) and the mounting strip (34) on the other side, optionally indirectly, to the adjacent longitudinal wall, and wherein the fourth corner reinforcing strip (21) is attached to the respective side wall (7) and extends in the direction of the respective corner, the fixing strip (34) having a width greater than the joint width of the first and second corner reinforcement strip (18, 19) and the fold line (16) between the second and third corner reinforcement strip (19, 20) is closer to corner point than the chord connecting the fold line between second corner reinforcement strip and the first corner reinforcement strip and the fold line between connect the third and fourth corner reinforcement strips together. The standby box according to claim 1, wherein the fourth corner reinforcing strip (21) is cold-glued to the inner surface of the adjacent side wall (7). Stand-by box according to claim 2, wherein the fourth corner reinforcing strip (21) has recesses (35) on its bonding surface, for example a set of intersecting grooves. Stand-by box according to claims 1, 2 or 3, wherein the assembly of fastening strip (34) and first corner reinforcing strip (18) is provided on its underside with a locking projection (37) and wherein at corresponding locations in the fold line (6) between the side wall (7) and the bottom (1) and the folding line (2) between the longitudinal wall (4), openings (28; 38) are provided for receiving the cam (32), respectively, in the collapsed state and the erected state. Stand-by box according to claim 4, wherein the bottom (1) adjacent to said recesses (28; 38) is provided with through cuts (40; 41), which extend substantially in the direction of displacement (B) of the cam (37). ). Collapsed standby box according to any one of the preceding claims, wherein the side walls (7) and the longitudinal walls (4) are folded down and the corner reinforcements are folded flat such that the first and the second corner reinforcement strips (18, 19) on the one hand and the third and the fourth corner reinforcement strips (20, 21), on the other hand, lie on top of each other and the fold line (16) between the second and third corner reinforcement strips (19, 20) is closer to the fold line between the mounting strip (34) and the side wall (7) than the fold lines ( 15, 17) between the first and second and the third and fourth corner reinforcement strips, respectively. 7. Stackable collapsible / cardboard ready-to-use box, comprising corner reinforcements (34, 18-21), which, in the assembled state of the box, with the box walls (4, 7) connecting to each other in a corner point, define a corner sleeve, the corner reinforcement being two strips (19, 20), each of which extends from a wall to a common fold line (16), and in the collapsed state of the box with their surfaces turned towards the interior of the box in the set-up state of the box abut, the folding line (16) in the collapsed position being near the corner point.