DE2729265A1 - Large capacity corrugated cardboard container - has base beam casings folded from sections integral with container sidewalls - Google Patents

Abstract

The large-capacity rectangular container is of folded corrugated cardboard or similar material, with a base under which a forklift truck or similar lifting machine can engage. Two parallel outer beams are fixed along the base edges at the outside, each comprising a casing of corrugated cardboard etc. filled by an inserted core. Each casing (6) is folded from a section of the adjacent parallel sidewall (2) of the container and in one piece with it. A number of parallel fold lines can be formed in these sections to form the casings, two strips in which overlap. The beams (8, 9) can be of rectangular cross-section.

Description

Large container

The invention relates to an unfolded from corrugated cardboard or the like large rectangular container with a hoist from a forklift or similar reachable bottom, on the underside of two opposite edges two parallel outer beams are attached, each with a sleeve made of corrugated cardboard or the like, the interior of which is filled by an inserted core is.

Such a large container can due to the at the bottom of the Directly on the floor as well as a smooth, underside however, handled containers placed on a separate pallet and e.g. by means of be transported by a forklift truck, thus has a quasi-integrated pallet. In a known large container of the initially mentioned type with two outer beams and one in the middle between them for further support The third beams provided on the floor are rectangular in cross-section Sleeves of all bars each consist of two, in the middle of the longitudinal extension of the bars colliding sections. The sleeve sections are separated from the blank of the actual container and made in pairs on two sections of the container blank attached, which are hinged to two opposite side walls of the container are and butt against each other each form one half of its bottom. The container blank is made with the attached, flattened sleeve sections supplied to the user, who also erects the sleeve part stiac when unfolding the container and then in pairs with each other by inserting a one-piece core Polystyrene foam must connect each to a beam.

This construction has the disadvantage that the manufacture of the large container is relatively expensive because of the separate attachment of the sleeve sections. Farther the two sections of the floor are exclusively using the cores of the beams connected to each other, which is why, given the low breaking strength of the The polystyrene foam from which the cores are made only has a low inherent stability owns. It must therefore be ensured that the filled large container always stands up or is lifted evenly so that the floor does not break.

Finally, it is very easily possible that the merely pinned Tear off the beam from the floor if it is tilted or the like, in particular, if the corrugated cardboard and / or the staples are weakened by environmental factors, the latter e.g. are rusted.

The invention is based on the object of a large container of the initially to design said type so that it is easy to manufacture and unfold and nevertheless great strength, even if handled improperly, sufficient strength especially on the ground owns.

This object is achieved according to the invention in that in the large container each sleeve of the beam from a one-piece, attached to the adjacent parallel side wall hinged portion of the container blank is folded.

In the case of the large container according to the invention, the sleeve is each bar an undivided structure that also has its entire length due to the articulation of the Section to form the sleeve on the adjacent side wall in one piece with this connected is. This results in an excellent, of the strength of the practically independent stability of the formed core pushed into the sleeve Beam, which of course also benefits the floor resting on the beam. Whose Stability can also be further increased by adding two to the two other, to the beams perpendicular side walls hinged sections to form of the floor are dimensioned for mutual overlap. Nonetheless, the production of the large container according to the invention extremely simple, since the container blank too the sections for forming the sleeve of the outer beams with comprises these sleeves thus not produced separately and in a separate operation on the container blank must be attached.

The design of the sections to form the sleeve and their unfolding becomes particularly easy if these sections each have several parallel to the sleeve axis, a number of parallel strips delimiting fold lines are provided. The sections can then have a substantially rectangular outline and need to be formed of the sleeves only to be "wound up" with a kink at the fold lines. Here, the inner cohesion and strength of the sleeves are particularly good, when two strips overlap in the folded sleeve. A Section for forming a sleeve, which is preferably rectangular in cross-section must then comprise five stripes. The overlap is expediently laid in the plane of the adjacent side wall.

To fix the unfolded, in particular "rolled up" sleeve the beam in the final position under the floor come various locking devices and closures on the blank in question. One in terms of training and handling very favorable training consists in the fact that on the two perpendicular to the bars Sidewalls tabs are hinged that reach into the interior of the sleeve and preferably clamped between the sleeve and the inserted core are.

If the bottom of the new bulk container, like the preferred embodiment corresponds, by two hinged sections on opposite side walls of the container blank is formed, the tabs are best made of these sections punched out or pre-punched. This saves material and a separate attachment of Tabs. A weakening of the soil is not to be feared, since the soil is in the area the tabs are covered by the beams.

Usually one gets the bars because of the handling of the large container Provide parallel to the shorter side walls by means of forklifts or the like. For some applications, e.g. for the space-saving use of a loading area, However, you will occasionally need large containers with the shorter side wall are transportable in advance and therefore the bars parallel to the longer side walls to have.

Of course, this does not require a fundamental change in the construction, but on the basis of the last-mentioned preferred embodiment e.g. just a mutual Interchanging the sections to form the sleeve and the sections for forming the bottom. But it is also possible to use to capture both alternatives in a single, uniformly manufactured blank, if all four sections of the container blank hinged to the side walls are provided with fold lines to form sleeves and with pre-cut tabs. It can then be left to the user to decide from which sections wants to form the sleeves and thus beams and the floor, with the required tabs because of the pre-punching each pressed out of the sections to form the bottom can be.

As in the case of the well-known large container, at least one more should be made Sleeve and core of existing beams between the two outer beams for improved Support of the floor may be provided, is expediently made of a separate one Cut the folded sleeve using a double-sided adhesive tape on the underside attached to the floor.

This type of fastening makes it possible that the container blank and the cut for the sleeve of the further beam separately both in completely flat Form because it is very easy for the user, if necessary unfolded blank for the sleeve of the further beam by simply pressing it on to connect to the bottom of the unfolded container with this. The double-sided Adhesive tape can already be applied to one of the two cuts by the manufacturer the container or the sleeve of the further beam, preferably attached to the latter be. In addition, there are expediently two for each additional bar Tabs are provided on the container blank, the further before inserting the core Be folded into its sleeve.

In order to facilitate the loading of the new large container, one of its Side walls one incised from the upper edge Loading flap exhibit. In addition, the large container is advantageously a separate one Associated cut-out of folded-out slip-on lid, with which this, if necessary while fixing the loading flap by means of the slip-on edge of the slip-on lid, can be closed is.

The following is the invention with further advantageous details explained in more detail using a schematically illustrated embodiment. In The drawings show: FIG. 1 - a plan view of a blank of an inventive Large container, Figure 2 - a plan view of a blank of a slip lid for the large container, Figure 3 - a plan view of a blank for the sleeve a middle beam to be attached to the bottom of the large container, Figure 4 - a isometric view of a core for the beams at the bottom of the large container, figure 5 - a partial section through the bottom of the large container with the attached Bar, Figure 5a - an enlarged view of the one marked with "x" in Figure 5 Detail, Figure 6 - an isometric partial view of the large container for illustration the assembly of an outer beam, Figure 7 - a partial isometric view of the large container to illustrate the attachment of a middle beam.

A rectangular large container according to the invention is made from a blank unfolded from corrugated cardboard. According to Figure 1, the container blank comprises two long ones Side walls 1 and two short side walls 2, which over at their lateral edges Related fold lines. A long side wall 1 has at its free side Edge a hinged connecting tab 3, which with the free side edge the one short side wall 2 is glued to the other end of the blank. At the bottom At the edge of each side wall 1 or 2, a rectangular section 5 or 6 is hinged. The sections 5 and 6 are each in full length with their side wall 1 and 2 connected and separated from each other by cuts 4 that extend to the bottom the side walls are enough.

The hinged to the long side walls 1 sections 5 are used for Formation of the bottom 10 of the large container, cf. Figure 5 by removing its side walls be pivoted inward by 900 until they are flat with mutual overlap lie on one another. On the underside of the floor 10 three bars 8 and 9 are attached, which all run parallel to the short side walls 2 and have the same rectangular cross-section to have. Two outer beams 8 lie on the two opposite edges of the floor 10, from which the short side walls extend, while the further, third beam 9 is arranged in the middle between the two outer beams 8. All three bars each include a corrugated cardboard sleeve open at the ends, into which a cuboid Core 11 made of polystyrene foam, cf.

Figure 4, is inserted, which fills the inside of the tube with an accurate fit.

The sleeves of the two outer beams 8 are made of the two one-piece, to the adjacent, short side walls 2 hinged sections 6 of the container blank folded. For this purpose, each section 6 is provided with several fold lines 61, the run parallel to the bottom of the side panels and between you and the fold line to the side wall 2 a total of five strips 62 parallel to the sleeve axis on each section 6 delimit. According to the rectangular cross-section of the beam or

Sleeve, the strips 62 have different widths. To form the Tube, each section 6 is "rolled up" under the floor 10 in such a way that its first strip 621 adjoining the side wall 2 in the same plane as the side wall 2 and all other strips 622-625 opposite each other previous stripes are angled at 900, creating the last, outer stripe 625 overlaps with the first strip 621, see FIG. 5a.

The sleeve of the middle beam 9 is formed in an analogous manner, however from its own, essentially rectangular blank 7 according to FIG. 3. This Blank 7, like the sections 6, is provided with a plurality of fold lines 71 which point to delimit a total of five strips 721-725 parallel to the tube axis. From the Edge of the first strip 721 are two hinged latching tabs 73, which are in corresponding Slots 74 are inserted between the last and the penultimate strip can to fix the "wound up" blank sleeve. Regarding the The outside of the sleeve of the penultimate strip 724 is a double-sided adhesive tape 75 applied, with which the tube formed from the blank 7 after removal the protective film of the adhesive tape is stuck to the underside of the bottom 10 The middle beam can also be attached by simple stapling or otherwise Gluing take place. This also applies to the outer bars.

At the bottom of the two long ones perpendicular to bars 8 and 9 Side walls 1 are each hinged to three tabs 12 from the hinged section 5 punched out or pre-punched in these so that they are when unfolding the large container can be pushed out of section 5. The mutual section of the Lugs 12 corresponds to the mutual distance the bar 8 and 9. Their width is smaller than the inner width of the sleeve of the beams. The tabs 12 after unfolding the sections 6 sleeves and gluing the to the sleeve folded blank 7 in pairs from the ends of the sleeve in their Folded inside and are with the inserted core 11 between this and the Sleeve clamped, see Figure 5a.

To unfold the large container, the one on the connecting flap is first used 3 brought endless closed blank in a rectangular shape and the bottom 10 through Tucking in the sections 5 is formed, with the tabs 12 not tucking in participate. Then the sleeves of the outer beams 8 are wound up by the Sections 6 made and provisionally by folding in the associated, outer Lugs 12 fixed on the underside of the floor. Then, as shown in figure 6 illustrates, in each sleeve of the outer beams 8 a tightly fitting core 11 pushed in completely. A two-part core is preferably used, the two parts of which are inserted from both ends of the sleeve to push out to avoid one of the two tabs 12 through the inserted core. Afterward the sleeve of the middle beam 9 is folded from the blank 7 and, as it is FIG. 7 indicates attached to the underside of the floor 10 by means of the adhesive tape 75. Then two tabs 12 are folded into this sleeve and the two parts a core 11 inserted from both ends.

In order to facilitate the loading of the finished large container, a of the two long side walls 1 on a loading flap 13, from the upper edge of the Side wall is incised and at its lower edge over a fold line related to the actual side wall. Another part of the large container Slip lid, which in the attached state with its slipped edge, the side walls 1 and 2 and secures the tailgate 13 in the closed position.

The slip lid is folded from a blank according to FIG. 2 and comprises a rectangular cover surface 20, on the four sides of which two long strips 21 and two short strips 22 are hinged, which form the outer edge of the hooded lid form.

The long strips 21 have connecting straps hinged at the front ends 23, which when unfolding the slip lid by 900 in contact with the short strips 22 folded over and secured in this position by folding tuck-in flaps 24 which are hinged to the outer edge of the short strips 22. Two gripping slots 25 in the short strips 22 are used to handle the slip lid.

In the container blank according to FIG. 1, the fold lines of the Sections 6 continue into Sections 5, although they are not needed there. This is due to the continuous application of the fold lines during manufacture the container blanks. However, you can also use the fold lines on sections 5 use to form sleeves for outer beams with these sections 5, wherein then the bottom of the container is created by superimposing the sections 6.

In the sections 6 tabs may be pre-punched, which are analogous to the tabs 12 used to fix the sleeves formed with the sections 5 will.

The large container described can also be used as a normal folding box be designed with hinged cover flaps.

.... Expectations Blank page

Claims (12)

Claims 1. Rectangular unfolded from corrugated cardboard or the like Large container with a forklift or similar hoist that can be reached under Bottom, on the underside of which on two opposite edges two parallel outer ones Beams are attached, each comprising a sleeve made of corrugated cardboard or the like, the inside of which is filled with an inserted core, d a d u r c h g e -k It is noted that each sleeve consists of a one-piece, to the adjacent parallel side wall (2) hinged section (6) of the container blank folded is. 2. Large container according to claim 1, characterized in that the sections (6) for the formation of sleeves each with several sleeve axially parallel, a number parallel strips (62) delimiting fold lines (61) are provided. 3. Large container according to claim 2, characterized in that overlap two strips (62) in the folded sleeve. 4. Large container according to claim 1, 2 or 3, characterized in that that the bars (8,9) have a rectangular cross-section. 5. Large container according to one of claims 1 to 4, characterized in that that on the two side walls (1) perpendicular to the bars (8, 9) into the interior the sleeve reaching tabs (12) are hinged. 6. Large container according to claim 5, characterized in that the tabs (12) are each clamped between the sleeve and the inserted core (11). 7. Großbehälternaöh claim 5 or 6, wherein the bottom through two sections of the container blank articulated on opposite side walls is formed, characterized in that the tabs (12) from the sections (5) are punched out to form the bottom (10). 8. Large container according to claim 7, characterized in that all four sections (5,6) of the container blank that are hinged to the side walls (1,2) with fold lines to form sleeves. and are provided with pre-cut tabs. 9. Large container according to one of claims 1 to 8, with at least one further beams consisting of a sleeve and core between the two outer beams, characterized in that the sleeve folded from a separate blank (7) the further bar (9) by means of a double-sided adhesive tape (75) on the underside of the bottom (10) is attached. 10. Large container according to claim 9, characterized in that the container blank two tabs (12) are also provided for each additional bar (9). 11. Large container according to one of claims 1 to 10, characterized in that that a side wall (1) of the large container is cut from the upper edge Has loading flap (13). 12. Large container according to one of claims 1 to 11, characterized in that that the large container has a snap-on lid unfolded from a separate blank (FIG. 2) assigned.