EP1593607A1 - Flat foldable container made of a foldable material - Google Patents

Abstract

The flat layable box (1) of corrugated cardboard, for example, has a casing part forming a prism-shaped ring (2) and with at least six side wall parts (21-28) connected in series. The bottom is formed by separate bottom parts (301,302 which each have bottom sections, whereby at least one of the bottom parts is formed in one piece with at least two adjacent bottom section pairs which are movable in relation to one another during the laying flat and erecting of the box. These bottom section pairs are materially interconnected via at least one connecting section (6) forming a part of the bottom part. An independent claim is included for blank sections which form at least two bottom parts of a box as specified in the invention.

Description

The invention relates to a flattenable container made of corrugated cardboard, cardboard or the like Foldable, folding-restoring force generating material comprising a closed, in the erect state in cross-section polygonal, a prism-shaped Container ring forming shell part, the at least six in series hinged together Side wall sections, a foldable between the container ring container bottom, formed by on the shell part for making up the container as a separate Parts attachable floor parts, each having floor sections over Fastening tabs by means of folding lines to corresponding, flattened container ring opposing side wall sections are articulated, wherein two in each case in the pair between two opposite side wall portions arranged bottom portions are hinged together by means of floor fold line to each other so that they lie flat Container ring come to lie in this. The invention also relates to Blanking parts for the bottom of such a container.

These are large capacity containers, which are usually octagonal in shape as octahedra are delivered and provided in a fully flattened condition to be erected to receive cargo in place. The large capacity container is made of several individual parts, namely the casing part and the bottom parts assembled and assembled. This has the advantage that for manufacturing the shell part and the floor parts each special, to the respective production width adapted manufacturing and processing machines are available. The bottom flaps the prefabricated container lie in its flattened state between the flattened sheath ring, so you have a low storage and transport volume reached. To erect the container, the flattened ring is pulled apart, whereby the soil is spread by unfolding the bottom flaps. Usually the container is filled with a bulk material receiving bag and by means of conventional pallets, e.g. transported a size of 1200 x 800 mm or 1200 x 1000 mm.

In a generic container known from EP 1 225 130 A1 the number of Floor parts half as large as the number of Grundrissecken or the side wall parts of Container. To facilitate the packaging of the container, it is desirable that the Reduce number of bottom parts. For this purpose, according to EP 1 225 130 A1 Floor parts provided, each with only two sheath side wall sections over Fastening straps can be connected. Between the bottom part and more adjoining side wall sections fastening straps must be omitted in order to to allow folding or unfolding of the package without tearing. As a result, a reduction in the stability of the known packaging must be considered be taken.

Object of the invention are a at least six-sided flatable large-capacity transport container to create that with several separate bottom parts easy and should be inexpensive to produce, with the number of separate floor parts without Impairment of vessel stability less than the number of pairs of corresponding ones Sidewall sections should be. In particular, the container should also be upright easy to manipulate. Cost and mechanical production costs for Production of blank parts for the container and for packaging be kept as low as possible by saving operations.

Objectives of the invention will be described in conjunction with the features of the aforementioned Container achieved in that at least one of the bottom parts with at least two when flattening and erecting the container relative to each other movable adjacent Floor section pairs are integrally formed, these pairs of floor sections via at least one connecting portion forming a part of the bottom part are cohesively connected to each other. According to the invention, one and the same Bottom part at least two adjacent bottom portion pairs, which by at least a section are separated from each other to when erecting or flattening the Container to be movable relative to each other. Otherwise, the two bottom section pairs with at least one connecting portion in the form of a web surface portion inseparably firmly connected to each other, so that the one-piece bottom part with in this integrated, each hinged to side wall sections bottom sections is formed. According to the invention, all side wall sections are provided with fastening straps provided the bottom parts, allowing dimensional stability of the container to the highest degree is guaranteed. In addition, the number of floor parts is simpler and less expensive Production and packaging in the desired manner limited. Also can the container for straightening particularly easy to handle, since the number of Floor parts is smaller than the number of side wall pairs and the floor sections respectively especially guided by their articulation on the casing part when unfolding the container stay. On the whole, a container is achieved, which is inexpensive and by saving of operations with manufacturing and logistical advantages produced and by erecting e.g. only one person is easy to handle and in terms of Transport, stability and use for different goods advantages brings.

According to a particular and preferred inventive design of the container bottom formed so that two adjacent bottom portion pairs of a bottom part in flat container condition of the bottom lip between two adjacent Starting sidewall parts diverging so that a substantially V-shaped Cutout is formed, wherein the two adjacent Bodenabschnittpaare by a Connecting portion are connected to each other, which has a displacement bottom portion has in the form of a fan-like fold field. At the same time the fan fold field opens in the bottom lip between two adjacent side wall sections. The connecting portion of a container designed in this way also has one attached to the container ring, over the corner edge between adjacent side wall portions continuous double-fastening tab on, which from the neighboring Bottom sections articulating mounting tabs is formed and the adjacent Sidewall sections across consistently firmly connected together. The one like compressible section acting extruding bottom section comes a series of Features and functions too. He connects two neighboring, relative to each other movable floor section pairs to a floor part, to the tailoring and Making the container is available separately. The crowding floor section takes up when placing the container displaced soil material. One Tearing of floor and / or wall parts of the container is reliably avoided although at the connecting portion adjacent side wall portions of the continuous double-fastening strap is attached. This will make container shape stability guaranteed despite the bordering in the bottom corner bottom part. The crowding floor section supports a guided unfolding of the bottom part or the Floor section pairs when erecting the container. This tour is done in cooperation with the bottom portions of the bottom part, to which all side wall sections are articulated. The guide also favors the locking of the floor parts to each other, as the parts free from uncontrolled displacement and deformation in Overlap connection get. The guided erection and unfolding of the Floor parts is expediently further improved by connecting sections of at least two parts of the ground with respect to an imaginary central point of the Soils are arranged in symmetry opposite to this point.

Although the specified embodiment is preferred, it is also according to the invention possible to equip a bottom part with a connecting portion which alone by the continuous double-fastening tab is formed. The over-the-counter Double fastening strap also ensures that the separate invention Bottom part in the form of a flat blank is available, its sections in this condition in the blanking plane against movement relative to each other are locked.

For the design of the displacement bottom portion, the training is at least one Fold field particularly suitable because this secured against separation, by Fold-down creates a shortenable connection surface. Although it is appropriate is that only a displacement bottom portion of a bottom portion in the area of a Container floor corner is formed, but it is also possible instead or in addition to one and the same floor part at least one displacement floor section to the ground center or in the middle of the floor to arrange.

Suitably, the attachment tabs are exterior to the container ring sidewall portions attached to an internal pressure particularly resistant edging of the To achieve container jacket. If necessary, the mounting straps but also be fixed inside the container ring side wall sections, or some tabs Can be attached to the outside and inside of the container ring. The fastening straps can be connected in any standard solid connection with the container shell part become. In particular, the tabs are glued to the side wall sections, while, for example, also stapling, a circumferential tape, stapling or the same compounds may be provided.

Suitably, the parts of the container are formed by corrugated cardboard blanks. by virtue of the container construction with jacket part and separate bottom parts can the Sheath part blank made of e.g. consist of two- or three-shaft heavy corrugated cardboard and the bottom part blanks with e.g. Einwelliger corrugated cardboard remain relatively thin. For the Ground blanks are used for corrugated board processing machines, which are used for a production width are designed that are much smaller than the production width a manufacturing machine for the Mantelteilzuschnitt is. Of particular advantage is it is that the bottom of the container according to the invention, although it is multi-part, but with same blank forms can be produced. For an octahedron container, the is preferred and mainly provided, one comes with two invention Bottom parts whose blanks match completely. It is also particularly advantageous that for confectioning and erecting the octahedron container only two parts of the floor are to be handled. These benefits exist equally for symmetrical and asymmetrical octagonal boxes. They also exist accordingly for polygon containers with larger number of corners. Under asymmetric containers one understands those in which Falt-bottom portions attached to container ring side wall sections are articulated with different ground plan length, according to different have asymmetric base shape.

In particular, it is advantageous that for an asymmetric Containers Sides and angles of the outline shape of the irregular tank polygon can be dimensioned such that the bottom fold lines of bottom section pairs one and the same bottom part when unfolding the container in common Auffaltebene lie and aligned with each other in the bottom of the erected container.

In a preferred embodiment, adjacent bottom section pairs of the invention Container by overlapping joints with overlapping sections of Floor sections connected to the container bottom of the erected container at least partially, preferably completely. Appropriately be on the tank bottom overlapping sections in the center of the ground bounded by tooth slots, by intermeshing splines with both sides of the bottom fold lines changing overlap position of the overlapping sections are formed. Around the Verzahnungsverbindung for handling the parts very simple, but still functional design, gear slots can be formed in such a way that the overlapping sections on the erected container in the region of the tooth slots are formed free from the bottom fold lines crossing sections. Suitably, at least one tooth slot a transverse to the bottom fold line a Slit width exhibiting open slot. A special advantage arises in connection with displacement floor sections according to the invention. Through this the bottom section pairs particularly when erecting the container, so that Overlapping connections and in particular toothed connections for guidance the bottom sections when erecting the container not particularly trained too will need. This allows in particular overlap edges for a Keep the container bottom completely closed and, as a result, the one used Dimension blanks to save material.

Fig. 1

in axonometrischer Ansicht von unten einen erfindungsgemäßen Oktaederbehälter,

Fig. 2

die Unteransicht des Behälters gemäß Fig. 1 in größerer Darstellung,

Fig. 3a und Fig. 3b

zwei gleiche Zuschnitteile, die zwei Bodenteile des Behälters gemäß Fig. 1 und 2 bilden und

Fig. 4

in schematischer Grundriss-Darstellung den Boden eines erfindungsgemäßen asymmetrischen Oktaeder-Behälters.

Subclaims are directed to the mentioned and still other expedient and advantageous embodiments of the invention. Particularly useful embodiments or possibilities of the invention will be described with reference to the following description of the embodiments illustrated in the schematic drawing. Show it

Fig. 1

in axonometric view from below an octahedron container according to the invention,

Fig. 2

the bottom view of the container of FIG. 1 in a larger view,

Fig. 3a and Fig. 3b

two identical blanks that form two bottom parts of the container of FIG. 1 and 2 and

Fig. 4

in a schematic plan view of the bottom of an asymmetric octahedral container according to the invention.

In Fig. 1, an inventive container 1 in the form of a regular octahedron shown. The container 1 has a prism-shaped container ring 2 forming Sheath part and a closed bottom 3 on.

The container ring 2 is formed by a corrugated cardboard cut from heavy corrugated board, the eight over folding lines 20 in series hinged to each other rectangular Mantelteilfelder having the same side wall portions 21 to 28 form. These are over their long sides hinged together. At the blank free longitudinal side of the side wall portion 28 is additionally hinged a strip 29, which is a so-called factory edge forms by gluing or other suitable attachment to the side wall portion 21 to form the closed container shroud 2 connected to become.

According to the container bottom 3 by two matching bottom parts 301, 302 formed, which are shown in flat lying blank in Figures 3a and 3b. The bottom 3 is formed with the bottom parts formed from the two separate blanks 301, 302 in two parts.

According to FIG. 3 a, the bottom part 301 has two wing-like bottom section pairs 401, 402 on. Each pair of floor sections 401, 402 passes through a respective bottom symmetry fold line 8 hinged symmetriegleiche bottom sections 4, namely by the two Bottom sections 41, 42 and formed by the two bottom portions 43, 48. The lower edges of the container ring 2 associated corresponding edges of the bottom part 301 are provided with mounting tabs 31, 32, 33 and 38, the over by double creasing lines formed fold lines 300 are hinged to the bottom sections 4. The fastening straps 32, 33 are formed by like portions of a double fastening tab 52 formed in the blank 11 straight extension, wherein the two tab sections 32, 33 are delimited by folding line 39 against each other.

In the flat blank 11 of the bottom part 301 is between the folding lines 300 of the adjacent Fixing tabs 31, 32 of the pair of sections 401 a corner angle of 135 ° formed equal to the corner angle of the erected shroud 2 between the Side wall sections 21, 22 is. The double attachment tab 52 is in place the bottom lip 312 between the side wall portions 22, 23 with the fold line 39th provided on the between the wall sections 22, 23 extending corner edge 223rd to come to rest. Between the foot or corner 50 of the fold line 39 at the fold lines 300 and the bottom sections 42, 43 is a material displacement section 51 forming fan-like fold portion 510 formed, the over by folding lines 511 hinged triangular fan fields the two bottom sections 42, 43 in one piece inextricably linked together. The displacement bottom portion 51 forms in Connection with the double-fastening tab 52 has a connecting portion 5 of the Bodenteils 301, over which the bottom portion pairs 441, 402 cohesively firmly together are connected. In this construction, the bottom part 301 is in the form of the one-piece Blank 11 of Fig. 3a produced as well as for assembly and erection of the container 1 manageable.

It can be seen in FIG. 3 a that the two adjacent bottom section pairs 401, 402 of the bottom part 301, starting from the corner point 50, diverge such that a in the Basic shape substantially V-shaped cutout 400 is formed in the narrow tapered Area is bounded by the displacement portion 51. It's lost the symmetry bottom fold lines 81, 82 of the two bottom section pairs 401, 402 of the in Fig. 3a flat blank at an angle of 135 °. Otherwise, the V-neckline by a cutting edge 91 of the bottom section pair 401 and a cutting edge 92 of the bottom section pair 402 limited. These mutually facing cut edges 91, 92 are convexly curved to form overlapping portions which are upright Container 1 in overlap joints 6 with section pairs 62, 63.1 and 61, 68.1 come to rest, as can be seen in FIG. The cut edges 91, 92 are in the region of the bottom fold lines 81, 82 with an open slot 71 and 72, respectively Mistake. These have a slot width 70.

In the exemplary embodiment, the fold section 510 has four fan fields whose fold lines 511 converge in the corner 50. The fold portion 510 extends in each case in the section 42 and 43 into it, where it is transverse to the edges 91,92 directed edges 501 and 502 is cut free. The fold lines 511 provide for a defined folding. In this case, three of the triangular fan fields come in the area of section 42 lie on one another in such a way that the edge at the edge 91 of Section 41 is pushed under the edge of the edge 92 of the section 43 to there to produce an overlap connection 6. For a particular in the container corner Folding pleat section can be any design with at cornering superimposed fan fields are provided.

The blank 12 of the bottom part 302 according to FIG. 3 b is identical to the blank 11 of Fig. 3a formed. Some identical parts and sections are identified by like reference numerals Mistake. Otherwise, it can be seen that the bottom section pair 401 in FIG. 3b the bottom portion 44 with fastening tab 34 and the bottom portion 47 with fastening tab 37, parts of the sections and tabs 43, 48 and 33, 38th correspond. The bottom section pair 402 of the blank 12 in FIG. 3b has the bottom section 45 with fastening tab 35 and the bottom portion 46 with fastening tab 36, parts and sections corresponding to the sections and tabs 41, 42 and 31, respectively and 32 of the blank 11 in Fig. 3a. The connecting portion 5 of the bottom part 302 is through the fold field displacement section 51 and out of the tabs 36, 37 formed one-piece double lug 52 formed. The curved edges 91, 92 of the bottom part 302 form pairwise overlapping overlapping sections 64.2, 65, and 66, 67.2.

As can be seen in particular from FIGS. 3 a and 3 b, the bottom section pairs 402 are the Floor parts 301 and 302 respectively on the side facing away from the bottom section pair 401 side provided with a convex edge 93, which in the region of the symmetry fold line 82 with an open slot 73 and 74 of a width 70 is equipped. At the bottom 3 of the finished As a result, containers arise in the same way as between the pairs of sections 401, 402 overlap connections 6 or toothed connections 7, with Pairing of covering sections 63.2, 64.1 or 67.1, 68.2, as shown in FIG. 2 is apparent.

For the manufacture and packaging of the container 1 are shown in FIG. 3a and 3b flat blanks 11, 12 of the separate bottom parts 301, 302 at the fold lines. 8 collapsed by 180 ° and in by 180 ° flat folding at corner edges 212 and 265 flattened octahedron container ring 2 in the pair with rotated by 180 ° to each other Position inserted. In pairs, the mirror-image equal sections 41/42, 48/43, 44/47 and 45/46. Lie in the flat folded container ring 2 the side wall portions 22, 23, 24 and 25 on the respective side wall portions 21, 28, 27 and 26. The fastening tabs 30 are at the fold lines 300th folded over 180 ° and outside of the side wall portions 21 to 28 of the container ring. 2 glued. Here are the mounting tabs 31 to 38, the Anlenk- and Extension length equal to the basic edge length of the container 1, according to the side wall portions 21 to 28 to lie. Cut and fold done so that in flat container ring 2 each have an outer corner edge 603 of the bottom section pair 402 on the adjacent corner edge 604 of the other bottom section pair 402 and in each case an outer corner edge 601 of the base section pair 401 on an adjacent Corner edge 602 of the adjacent floor section pair 402 come to rest. This achieves that the overlapping at the bottom of the erected container 1 Sections 61 to 68 with respect to the fold lines 8 in changing overlap position (see Fig. 2).

When mounting the container 1 from its prefabricated flat position to move Symmetry bottom fold lines 8 in common, vertical to the ground plane vertical Folding level 10 until they are aligned with each other in the bottom 3 of the erected container 1. In this Aufrichtvorgang be from their spanned wall layer in their compressed bottom layer reaching displacement portions 51 of the connecting portions 5 by partial folding and optionally crushed or Stitch folding of the connecting fold fields shortened to the extent that in each case the bottom section pair 402 at each corner 50 by 45 ° from the adjacent Bottom section pair 401 is pivoted so that the upright container 1 in Area of the connecting portions 5 as at all other bottom corners container corner angle of 135 ° arise.

As can be seen from FIGS. 1 and 2, the identical design of the blanks 11, 12 leads the bottom parts 301, 302 to the fact that the two connecting portions 5 with respect to to an imaginary central point 15 of the bottom 3 in symmetry to this point.

As can be seen in particular from Fig. 2, arise through the tooth slots 71 to 74 Intermeshing splines 7. In the area of the splines 71 to 74, the overlapping portions 61 to 68 are free from the bottom fold lines 8 crossing sections formed.

In Fig. 4, the bottom 3 of an asymmetric octahedron container 1 is shown. For corresponding or identical parts are given the same reference numerals as in the preceding used described embodiment. One recognizes, however, that in this example the bottom sections 43, 48 and the bottom sections 44, 47 of the two bottom section pairs 402 in their basic form are asymmetrical to each other, and accordingly the longer floor plan edges of the side wall portions 28, 24 in proportion to the shorter floor plan edges of the pair of side wall sections 23, 27. On the other hand, the ground plan edges of the side wall portions 21, 22 and 25 and 26th the same length, so that the bottom fold lines 81, 82 of the bottom section pairs 401, 402 each one and the same bottom part 301 and 302 during unfolding of the container first each lie in a common vertical Auffaltebene 101 and 102 and in unfolded Tray 1 is aligned.

Claims (20)

A flat container (1) made of corrugated cardboard, cardboard or the like foldable, folding-restoring force generating material, comprising
a closed, in the erected state in cross-section polygonal, a prism-shaped container ring (2) forming shell part having at least six in series hinged side wall sections (21-28),
a container bottom (3) which can be folded between the container ring (2) and formed by bottom parts (301, 302) which can be fastened as separate parts to the casing part for packaging the container (1), each having bottom sections (4) which are fastened via fastening straps (31). 38) are hinged by means of fold lines (300) to corresponding side wall sections (21, 22; 23, 28; 24, 27; 25, 26) located opposite the flattened container ring (2), two each in pairs between the corresponding opposite side wall sections (FIG. 21, 22, 23, 28, 24, 27, 25, 26) arranged floor sections (41, 42, 43, 48, 44, 47, 45, 46) by means of bottom fold line (8) are hinged to each other so that they lie flat laid container ring (2) be in this,
characterized in that at least one of the bottom parts (301, 302) is integrally formed with at least two adjacent bottom section pairs (401, 402) movable and erecting the container (1), said bottom section pairs (401, 402) being at least one a component of the bottom part (301, 302) forming connecting portion (5) are integrally connected to each other. Container according to claim 1, characterized in that the connecting portion (5) has at least one displaceable bottom section (51) shortened in the displacement position on the erected container (1). A container according to claim 2, characterized in that at least one displacement bottom portion (51) is formed by a fold portion (510). A container according to claim 3, characterized in that the fold portion (510) at least partially in at least one bottom portion, preferably in two bottom portions (42, 43) of the folded portion (510) connected to the bottom portions (42, 43) is formed. Container according to one of claims 1 to 4, characterized in n et that two neighboring bottom section pairs (401, 402) of a bottom part (301, 302) adjacent laid flat container state from the bottom part corner (312) between two side wall parts (22, 23, 26 , 27) starting diverging such that a substantially V-shaped cutout (400) is formed. Container net according to one of claims 1 to 5, gekennzeich- characterized in that the two neighboring bottom section pairs (401, 402) are interconnected by at least one connecting portion (5), the bottom portion of displacement (51) has a formed by a fan-like folds section (510) is formed. A container according to claim 6, characterized in that the displacement bottom portion (51) opens with converging fold lines (511) in the bottom corner (312) between two adjacent side wall portions (32, 33; 36, 37). Container net according to one of claims 1 to 7, gekennzeich- characterized in that the connecting portion (5) fixed to the container ring (2), on the corner edge (223, 267) between adjacent side wall portions (22, 23; 26, 27) through Double fastening strap (52), which from the adjacent bottom portions (42, 43, 46, 47) articulating fastening tabs (32, 33, 36, 37) is formed. Container according to one of claims 1 to 8, characterized in n-et, that the fixing tabs (31-38) are mounted externally to the container ring side wall sections (21-28). Container according to one of claims 1 to 9, characterized in n et, that the bottom part (301, 302) with bottom sections (4) hinged thereto fastening tabs (31, 32, 33, 38; 35, 36, 37, 34) and at least one connecting portion (5) is formed by a blank (11, 12) made of foldable material. Container according to one of claims 1 to 10, characterized gekennzeich-n et, that the container (1) is in the form of an octahedron, the bottom (3) by two separate bottom parts (301, 302) each having two relatively movable, by means of Connecting portion (5) connected bottom portion pairs (401, 402) is formed. Container according to one of claims 1 to 11, characterized in n et that connecting portions (5) of at least two bottom parts (301, 302) opposite with respect to an imaginary central point (15) of the base (3) in symmetry to this point are arranged. Container according to one of claims 1 to 12, characterized gekennzeich-n et, that the bottom (3) of the container (1) has the plan shape of a regular polygon. That the bottom (3) A container according to one of claims 1 to 12, characterized in n et of the container (1), the ground plan shape of an irregular polygon, wherein folding bottom sections which are articulated on container ring side wall sections of differing ground plan length, corresponding to have different asymmetric base surface shape. A container according to claim 14, characterized in that sides and angles of the plan shape of the irregular polygon are dimensioned so that the bottom fold lines (81, 82) of bottom section pairs (401, 402) of one and the same bottom part (301, 302) upon unfolding of the container ( 1) lie in common Auffaltebene (101, 102) and in the bottom (3) of the erected container (1) are aligned. Container according to one of claims 1 to 15, characterized in n et that neighboring bottom section pairs (401, 402) are connected by lap joints (6) with overlapping sections (61-68) of the bottom sections (41-48) that the container bottom (3 ) of the erected container (1) at least partially, preferably in its entirety. Container according to claim 16, characterized in that at the container bottom (3) overlapping portions (61-68) in the center of the ground by tooth slots (71-74) are limited by the intermeshing toothed connections (7) with mutually on the bottom fold lines (8) changing overlapping position the overlapping portions (61-68) are formed. Container according to claim 17, characterized in that the tooth slots (71-74) are formed such that the overlapping sections (61-68) on the upright container (1) in the region of the tooth slots (71-74) free from the bottom fold lines (8). Traversing sections are formed. A container according to claim 18, characterized in that at least one tooth slot (71-74) is an open slot having a slot width (70) transverse to the bottom fold line (8). Blank parts (11, 12) of a lay-flat container (1), the at least two Bottom parts (301, 302) of a container (1) according to one of claims 1 to 19 form.

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