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EP2338799A1 - Thermoplastic container - Google Patents

Thermoplastic container Download PDF

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Publication number
EP2338799A1
EP2338799A1 EP10196167A EP10196167A EP2338799A1 EP 2338799 A1 EP2338799 A1 EP 2338799A1 EP 10196167 A EP10196167 A EP 10196167A EP 10196167 A EP10196167 A EP 10196167A EP 2338799 A1 EP2338799 A1 EP 2338799A1
Authority
EP
European Patent Office
Prior art keywords
side walls
bottom plate
container
ribs
double
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP10196167A
Other languages
German (de)
French (fr)
Other versions
EP2338799B1 (en
Inventor
Wilhelm Roelofs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bekuplast Kunstoffverarbeitungs GmbH
Original Assignee
Bekuplast Kunstoffverarbeitungs GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Publication of EP2338799A1 publication Critical patent/EP2338799A1/en
Application granted granted Critical
Publication of EP2338799B1 publication Critical patent/EP2338799B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/22—Boxes or like containers with side walls of substantial depth for enclosing contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D21/00—Nestable, stackable or joinable containers; Containers of variable capacity
    • B65D21/02—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
    • B65D21/0209—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together stackable or joined together one-upon-the-other in the upright or upside-down position
    • B65D21/0213—Containers presenting a continuous stacking profile along the upper or lower edge of at least two opposite side walls

Definitions

  • Container made of thermoplastic material
  • the present invention relates to a container made of thermoplastic material for the storage and transport of goods, with a whole or partial area double-walled bottom and four integral with the ground, wholly or partially double-walled side walls, spaced from the bottom of this by ribs a bottom plate is welded, which has a circumferential step-shaped stacking edge, whose bottom-parallel part is welded to the lower ends of the side walls and closes within the double-walled side walls present cavities downwards.
  • the invention relates to a method for producing a corresponding container.
  • a container of the type mentioned and a method for its preparation are made DE 43 12 842 C2 known.
  • the bottom plate with its peripheral stack edge is or is welded here in a single welding plane with the rest of the container.
  • the bottom plate and the rest of the container are designed so that meet in the welding plane, the lower ends of the double-walled side walls, the ribs and rib-like approaches to each other, so always line-shaped elements meet on one side on also linear elements on the other side.
  • This design is required for the mirror welding obviously used here as a welding process.
  • the object is to provide a container of the type mentioned above and a method for its production, which avoid the disadvantages mentioned above and in particular with a simpler shape of the parts to be welded together of the container a simpler and faster and thus less expensive Allow manufacturing.
  • the container according to the invention is advantageously designed at its two parts to be welded together so that for the weld a faster and more energy-efficient friction welding can be used with respect to the mirror welding. It is ensured by the design of the container that always meets a line-shaped container area on the one hand to a flat container area on the other hand in all welding levels. In this way, there is always a sufficiently large contact and movement surface for the friction welding process available.
  • the design of the parts of the container to be joined together is made easier, because always an area on one side of each welding plane is simply flat only without here rib-like projections or the like line-shaped elements are required to coincide with line-shaped elements on the other side have to be. This, and the lower energy consumption of the friction welding process, makes the container less expensive to produce, with even improvements in the quality and durability of the welded joints.
  • the bottom and the bottom plate are in at least a first welding plane and the lower ends of the side walls and the bottom parallel part of Stacking edge of the bottom plate friction welded together in at least one parallel to the first welding plane, offset in height second welding plane.
  • a restriction to a single welding level is eliminated here advantageous.
  • the container has two or more welding levels, which can be selected appropriately in terms of a favorable production.
  • the invention proposes that the ribs which are spaced from each other from the bottom and the bottom plate are integrally formed with the bottom and that the first welding plane lies at the level of the free lower end of the ribs and the rib-free upper side of the bottom plate facing the ribs.
  • the bottom plate has a particularly simple shape because it has no ribs.
  • Another contribution to a particularly high stability and load capacity of the container is achieved in that preferably in the interior of the double-walled side walls whose double walls are integrally connected to each other vertical webs are provided which terminate flush with the lower ends of the side walls, and that the second welding level in height the lower ends of the side walls and the webs and the upper side of the bottom-parallel part of the stack edge lies.
  • Another advantage achieved here is that the bottom-parallel part of the stack edge can here be simply smooth-surfaced and no rib-like projections or the like elements needed for the welded joint.
  • the bottom plate is executed over the entire surface and covers the entire surface of the floor or is performed circumferentially wreath-shaped and covers the bottom part of the area only peripherally circumferentially.
  • a particularly stable and underside either over its entire surface or over a peripheral peripheral surface smooth container is formed, which is easily and quietly transportable in the loaded state on roller conveyors or ball tracks.
  • the invention also relates to a method for producing a container made of thermoplastic material for the storage and transport of goods, with a whole or partial area double-walled bottom and four integral with the ground or connected, wholly or partially double-walled side walls , wherein the underside of the bottom of this by spaced ribs a bottom plate is welded, which has a circumferential step-shaped stacking edge, the bottom-parallel part is welded to the lower ends of the side walls and closes within the double-walled side walls present cavities downwards.
  • the invention proposes that the ribs which separate the bottom and the bottom plate are produced completely as part of the bottom or completely as part of the bottom plate, that the bottom parallel part of the stack edge at its bottom Ends of the side walls facing top is generated free of ribs and that the bottom plate is reibversch dipt with the rest of the container.
  • a container of the type described above can be produced quickly, energy-efficiently, inexpensively and with a high quality.
  • the design of the bottom plate and the rest of the container so that a necessary for the friction welding relative freedom of movement in the direction of the welding plane is ensured to a sufficient extent.
  • the bottom plate and the rest of the container are then fixed in their desired position relative to each other until the welding region is sufficiently cooled and solidified.
  • the invention proposes that the bottom and the bottom plate in at least one first welding plane and the bottom ends of the side walls and the bottom parallel part of the stacking edge of the bottom plate are simultaneously friction-welded together in at least one height-offset second welding plane parallel to the first welding plane.
  • the friction welding takes place here advantageously in several planes simultaneously, which run parallel to each other and which can be chosen so that the simplest possible shaping of the bottom plate and the rest of the container in the region of their welding is achieved.
  • the friction welding takes place with a vibration amplitude which is equal to or greater than the thickness of the ribs and / or the lower ends of the side walls.
  • this relatively large oscillation amplitude does not cause any problems, because always a line-shaped region of one container part strikes a flat region of the other container part.
  • usually small thickness of the lower ends of the side walls and / or For example, with a thickness of the lower side wall ends or ribs of about 2 mm in friction welding, it is possible to have a vibration amplitude of about ⁇ 2 mm or more, ie, about 4 mm in total or more to use.
  • FIG. 1 shows a container 1 in a turned-up position in which an open side of the container 1 down and a bottom 2 of the container 1 facing upward, in a partially broken view.
  • longitudinal and transverse ribs 20 are made in one piece, which serve to reinforce the bottom 2.
  • the walls 3 are double-walled over part of their length and height, wherein there are arranged within the side walls 3 vertically extending, the double walls interconnecting, with these integral webs 30.
  • the container 1 comprises a bottom plate 4, which has a peripheral, stepped stacking edge 40.
  • the bottom plate 4 is connected with its the free ends 21 of the ribs 20 side facing the bottom 2 by friction welding.
  • the bottom plate 4 is also friction-welded in the region of its stacking edge 40 with the side of the bottom-parallel part 42 of the stacking edge 40 facing the bottom ends 31 of the side walls 3.
  • the container 1 Due to the double-walled design the bottom 2 with the welded bottom plate 4 and the ribs 20 disposed therebetween and through the double-walled side walls 30 with the webs 30 therein, the container 1 becomes very stable at a low weight and can also accommodate heavy loads without appreciable deformation.
  • the underside facing the viewer underside of the bottom plate 4 here forms a smooth surface over its entire surface, which ensures a trouble-free and quiet transport of the container 1, even in a loaded condition, on a roller or ball track.
  • the bottom plate 4 can also be executed in a circular shape.
  • FIG. 2 shows in container 1 FIG. 1 in a side view, wherein a left end portion of the container 1 is shown in vertical section.
  • the container 1 comprises the bottom 2 and four side walls 3 formed integrally therewith, which are double-walled in partial areas.
  • the top 22 of the bottom 2 is formed smooth surface, so that there can be well stored and transported goods there and easy cleaning of the interior of the empty container 1 is possible.
  • the upper side 22 of the bottom 2 can also be embodied in a shape adapted to special items to be picked up.
  • ribs 20 are made in one piece.
  • the side walls 3 have vertically extending webs 30, which are also present in the lower, double-walled region of the side walls 3.
  • the bottom plate 4 is connected to the rest of the container 1 by a friction welding.
  • the base plate 4 is here a both smooth on the top side and underside, rib-free plate, the edge circumferentially has the step-shaped stack edge 40.
  • the bottom plate 4 is welded to the downward-pointing free ends 21 of the ribs 20 by the friction welding process.
  • the stacking edge 40 is welded with its smooth-surfaced top with the lower ends 31 of the side walls 3 by the same friction welding circumferentially tight. As a result, cavities 33 within the side walls 3 and cavities between the bottom 2 and bottom plate 4 are sealed.
  • FIG. 3 shows in an enlarged view the in FIG. 2 circled detail "A".
  • one of the side walls 3 can be seen, which is double-walled in its lower part.
  • In the background lies within the side wall 3 of one of the vertical webs 30, which also extend upwards beyond the double-walled region of the side wall 3 addition.
  • the bottom 2 of the container 1, the top 22 is smooth and flat.
  • the ribs 20 are made in one piece, wherein in FIG. 3 only one parallel to the plane of the drawing extending rib 20 is visible.
  • the part of the container 1 comprising the side walls 3 and the bottom 2 with the ribs 20 can be produced in one piece from a thermoplastic material in a first injection process.
  • the stacking edge 40 is composed of a vertical part 41 which is angled upwards from the base plate 4 and a part 42 which is angled outwards and is parallel to the ground.
  • the bottom plate 4 with the stack edge 40 can be produced as a one-piece injection molded part made of thermoplastic material.
  • the first part of the container 1 with the walls 3 and the bottom 2 on the one hand and the second part of the container 1 with the bottom plate 4 and the stacking edge 40 on the other hand are connected to each other by simultaneous friction welding in two welding levels 51 and 52.
  • the first welding plane 51 lies in the height of the top 45 of the bottom plate 4 and the downwardly facing free ends 21 of the ribs 20.
  • the second welding plane 52 is parallel to the first welding plane 51, but relative to this upwardly offset in height at the level of the lower free Ends 31 of the side walls 3 and the webs 30 and the top 42 'of the bottom-parallel part 42 of the stacking edge 40 of the bottom plate. 4
  • FIG. 3 illustrated lie in the first welding plane 51 line-shaped elements in the form of the free ends 21 of the ribs 20 on the one hand and a flat element in the form of the smooth-surfaced top 45 of the bottom plate 4 for the friction welding together.
  • the line-shaped lower ends 31 of the side walls 3 and of the webs 30 rest against one another on a flat element in the form of the smooth-surfaced upper side 42 'of the bottom-parallel part 42 of the stacking edge 40.
  • the parts to be welded together are fixed in their desired position relative to each other until the plasticized by the friction plastic materials of the two parts are melt-bonded together and then cooled sufficiently.
  • the stacking edge 40 and the remaining bottom plate 4 are tightly and securely connected to the side walls 3 and the bottom 2 of the container 1.
  • the cavities 30 within the side walls 3 and the cavities between the bottom 2 and the bottom plate 4 are sealed to the outside.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Stackable Containers (AREA)

Abstract

The container (1) has a completely or partially double-walled base (2) and four completely or partially double-walled side walls (3), where the side walls are connected with the base. A base plate (4) is welded under the base, which has a rotating stepped stacking edge (40). The base plate is friction welded with the remaining container. An independent claim is also included for a method for manufacturing a container for storage and transportation of goods.

Description

Behälter aus thermoplastischem KunststoffContainer made of thermoplastic material

Die vorliegende Erfindung betrifft einen Behälter aus thermoplastischem Kunststoff für die Lagerung und den Transport von Gütern, mit einem ganz- oder teilflächig doppelwandigen Boden und mit vier mit dem Boden einstückigen, ganz- oder teilflächig doppelwandigen Seitenwänden, wobei unter dem Boden von diesem durch Rippen beabstandet eine Bodenplatte angeschweißt ist, die einen umlaufenden stufenförmigen Stapelrand aufweist, dessen bodenparalleler Teil an die unteren Enden der Seitenwände angeschweißt ist und innerhalb der doppelwandigen Seitenwände vorliegende Hohlräume nach unten hin abschließt. Außerdem betrifft die Erfindung ein Verfahren zum Herstellen eines entsprechenden Behälters.The present invention relates to a container made of thermoplastic material for the storage and transport of goods, with a whole or partial area double-walled bottom and four integral with the ground, wholly or partially double-walled side walls, spaced from the bottom of this by ribs a bottom plate is welded, which has a circumferential step-shaped stacking edge, whose bottom-parallel part is welded to the lower ends of the side walls and closes within the double-walled side walls present cavities downwards. Moreover, the invention relates to a method for producing a corresponding container.

Ein Behälter der eingangs genannten Art und ein Verfahren zu dessen Herstellung sind aus DE 43 12 842 C2 bekannt. Die Bodenplatte mit ihrem umlaufenden Stapelrand ist bzw. wird hier in einer einzigen Schweißebene mit dem übrigen Behälter verschweißt. Dabei sind die Bodenplatte und der übrige Behälter so gestaltet, dass in der Schweißebene die unteren Enden der doppelwandigen Seitenwände, die Rippen und rippenartige Ansätze aufeinander treffen, also immer linienförmige Elemente auf der einen Seite auf ebenfalls linienförmige Elemente auf der anderen Seite treffen. Diese Gestaltung ist für das hier offensichtlich eingesetzte Spiegelschweißen als Schweißverfahren erforderlich. Die Formgebung der miteinander zu verschweißenden Bereiche des Behälters wird dadurch relativ aufwändig, weil eine exakte Deckungsgleichheit der miteinander zu verschweißenden unteren Seitenwandenden, Rippen und rippenartige Ansätze erforderlich ist, um eine sichere und stabile sowie umlaufend dichte Schweißverbindung zu erzielen. Problematisch ist dabei aber, dass es insbesondere an den unteren Seitenwandenden zu einem Abweichen vom Soll-Verlauf kommen kann, was eine genaue Deckungsgleichheit zu zugehörigen rippenartigen Ansätzen verhindert. Sofern hier eine zweite Schweißebene erwähnt wird, dient diese nur dazu, in einem zweiten Schweißvorgang ein weiteres, zusätzlich zur Bodenplatte vorgesehenes Teil mit dem übrigen Behälter zu verbinden.A container of the type mentioned and a method for its preparation are made DE 43 12 842 C2 known. The bottom plate with its peripheral stack edge is or is welded here in a single welding plane with the rest of the container. In this case, the bottom plate and the rest of the container are designed so that meet in the welding plane, the lower ends of the double-walled side walls, the ribs and rib-like approaches to each other, so always line-shaped elements meet on one side on also linear elements on the other side. This design is required for the mirror welding obviously used here as a welding process. The shape of the areas of the container to be welded together is thereby relatively complex, because an exact congruence of the bottom side wall ends to be welded together, ribs and rib-like projections is required to achieve a secure and stable and circumferentially sealed weld. However, it is problematic in this case that, in particular at the lower side wall ends, a deviation from the nominal profile can occur, which prevents exact congruence with associated rib-like projections. If a second welding level is mentioned here, this serves only to a second welding process further, in addition to the bottom plate provided part to connect to the rest of the container.

Für die vorliegende Erfindung stellt sich daher die Aufgabe, einen Behälter der eingangs genannten Art und ein Verfahren zu dessen Herstellung anzugeben, welche die vorstehend angegebenen Nachteile vermeiden und insbesondere bei einer einfacheren Formgebung der miteinander zu verschweißenden Teile des Behälters eine einfachere sowie schnellere und dadurch kostengünstigere Herstellung erlauben.For the present invention, therefore, the object is to provide a container of the type mentioned above and a method for its production, which avoid the disadvantages mentioned above and in particular with a simpler shape of the parts to be welded together of the container a simpler and faster and thus less expensive Allow manufacturing.

Die Lösung des den Behälter betreffenden Teils dieser Aufgabe gelingt erfindungsgemäß mit einem Behälter der eingangs genannten Art, der dadurch gekennzeichnet ist, dass die den Boden und die Bodenplatte voneinander beabstandenden Rippen vollständig Teil des Bodens oder vollständig Teil der Bodenplatte sind, dass der bodenparallele Teil des Stapelrandes an seiner den unteren Enden der Seitenwände zugewandten Oberseite rippenfrei ist und dass die Bodenplatte mit dem übrigen Behälter reibverschweißt istThe solution of the container part of this task succeeds according to the invention with a container of the type mentioned, which is characterized in that the bottom and the bottom plate spaced apart ribs are completely part of the bottom or completely part of the bottom plate that the ground parallel part of Stack edge is free of ribs at its upper ends facing the lower side of the side walls and that the bottom plate is reibverschweißt with the rest of the container

Der erfindungsgemäße Behälter ist vorteilhaft an seinen beiden miteinander zu verschweißenden Teilen so gestaltet, dass für die Schweißverbindung ein gegenüber dem Spiegelschweißen schnelleres und energiesparendes Reibschweißen einsetzbar ist. Dabei ist durch die Gestaltung des Behälters gewährleistet, dass in allen Schweißebenen immer ein linienförmiger Behälterbereich einerseits auf einen flächigen Behälterbereich andererseits trifft. Auf diese Weise steht immer eine ausreichend große Kontakt- und Bewegungsfläche für den Reibschweißvorgang zur Verfügung. Die Gestaltung der miteinander zu verbindenden Teile des Behälters wird dadurch einfacher, weil immer ein Bereich auf der einen Seite jeder Schweißebene einfach nur flächig ausgebildet ist, ohne dass hier rippenartige Ansätze oder dergleichen linienförmige Elemente erforderlich sind, die mit linienförmigen Elementen auf der anderen Seite deckungsgleich sein müssen. Dadurch und durch den geringeren Energieverbrauch des Reibschweißvorganges wird der Behälter in seiner Herstellung preiswerter, wobei sogar Verbesserungen bei der Qualität und Haltbarkeit der Schweißverbindungen erzielt werden.The container according to the invention is advantageously designed at its two parts to be welded together so that for the weld a faster and more energy-efficient friction welding can be used with respect to the mirror welding. It is ensured by the design of the container that always meets a line-shaped container area on the one hand to a flat container area on the other hand in all welding levels. In this way, there is always a sufficiently large contact and movement surface for the friction welding process available. The design of the parts of the container to be joined together is made easier, because always an area on one side of each welding plane is simply flat only without here rib-like projections or the like line-shaped elements are required to coincide with line-shaped elements on the other side have to be. This, and the lower energy consumption of the friction welding process, makes the container less expensive to produce, with even improvements in the quality and durability of the welded joints.

Bevorzugt sind der Boden und die Bodenplatte in wenigstens einer ersten Schweißebene und die unteren Enden der Seitenwände und der bodenparallele Teil des Stapelrandes der Bodenplatte in wenigstens einer zur ersten Schweißebene parallelen, höhenversetzten zweiten Schweißebene miteinander reibverschweißt. Eine Beschränkung auf eine einzige Schweißebene entfällt hier vorteilhaft. Zweckmäßig hat der Behälter zwei oder mehr Schweißebenen, die im Sinne einer günstigen Herstellung zweckentsprechend gewählt werden können.Preferably, the bottom and the bottom plate are in at least a first welding plane and the lower ends of the side walls and the bottom parallel part of Stacking edge of the bottom plate friction welded together in at least one parallel to the first welding plane, offset in height second welding plane. A restriction to a single welding level is eliminated here advantageous. Suitably, the container has two or more welding levels, which can be selected appropriately in terms of a favorable production.

Weiter schlägt die Erfindung vor, dass die den Boden und die Bodenplatte voneinander beabstandenden Rippen einstückig mit dem Boden ausgebildet sind und dass die erste Schweißebene in Höhe des freien unteren Endes der Rippen und der den Rippen zugewandten rippenfreien Oberseite der Bodenplatte liegt. In dieser Ausgestaltung hat die Bodenplatte eine besonders einfache Form, weil sie keine Rippen aufweist.Further, the invention proposes that the ribs which are spaced from each other from the bottom and the bottom plate are integrally formed with the bottom and that the first welding plane lies at the level of the free lower end of the ribs and the rib-free upper side of the bottom plate facing the ribs. In this embodiment, the bottom plate has a particularly simple shape because it has no ribs.

Ein weiterer Beitrag zu einer besonders hohen Stabilität und Belastbarkeit des Behälters wird dadurch erreicht, dass bevorzugt im Inneren der doppelwandigen Seitenwände deren Doppelwände miteinander einstückig verbindende vertikale Stege vorgesehen sind, die bündig mit den unteren Enden der Seitenwände enden, und dass die zweite Schweißebene in Höhe der unteren Enden der Seitenwände und der Stege und der Oberseite des bodenparallelen Teils des Stapelrandes liegt. Ein weiterer hier erzielter Vorteil besteht darin, dass der bodenparallele Teil des Stapelrandes hier einfach glattflächig ausgebildet sein kann und keine rippenartigen Ansätze oder dergleichen Elemente für die Schweißverbindung benötigt.Another contribution to a particularly high stability and load capacity of the container is achieved in that preferably in the interior of the double-walled side walls whose double walls are integrally connected to each other vertical webs are provided which terminate flush with the lower ends of the side walls, and that the second welding level in height the lower ends of the side walls and the webs and the upper side of the bottom-parallel part of the stack edge lies. Another advantage achieved here is that the bottom-parallel part of the stack edge can here be simply smooth-surfaced and no rib-like projections or the like elements needed for the welded joint.

Bevorzugt ist weiter vorgesehen, dass die Bodenplatte vollflächig ausgeführt ist und den Boden vollflächig überdeckt oder umlaufend kranzförmig ausgeführt ist und den Boden teilflächig nur randseitig umlaufend überdeckt. Auf diese Weise wird ein besonders stabiler sowie unterseitig entweder über seine volle Fläche oder über eine randseitig umlaufende Fläche glatter Behälter gebildet, der problemlos und geräuscharm auch in beladenem Zustand über Rollenbahnen oder Kugelbahnen transportierbar ist.Preferably, it is further provided that the bottom plate is executed over the entire surface and covers the entire surface of the floor or is performed circumferentially wreath-shaped and covers the bottom part of the area only peripherally circumferentially. In this way, a particularly stable and underside either over its entire surface or over a peripheral peripheral surface smooth container is formed, which is easily and quietly transportable in the loaded state on roller conveyors or ball tracks.

Wie oben erwähnt, betrifft die Erfindung auch ein Verfahren zum Herstellen eines Behälters aus thermoplastischem Kunststoff für die Lagerung und den Transport von Gütern, mit einem ganz- oder teilflächig doppelwandigen Boden und mit vier mit dem Boden einstückigen oder verbundenen, ganz- oder teilflächig doppelwandigen Seitenwänden, wobei unterseitig an den Boden von diesem durch Rippen beabstandet eine Bodenplatte angeschweißt wird, die einen umlaufenden stufenförmigen Stapelrand aufweist, dessen bodenparalleler Teil an die unteren Enden der Seitenwände angeschweißt wird und innerhalb der doppelwandigen Seitenwände vorliegende Hohlräume nach unten hin abschließt. Zur Lösung des das Verfahren betreffenden Teils der oben gestellten Aufgabe schlägt die Erfindung vor, dass die den Boden und die Bodenplatte voneinander beabstandenden Rippen vollständig als Teil des Bodens oder vollständig als Teil der Bodenplatte erzeugt werden, dass der bodenparallele Teil des Stapelrandes an seiner den unteren Enden der Seitenwände zugewandten Oberseite rippenfrei erzeugt wird und dass die Bodenplatte mit dem übrigen Behälter reibverschweißt wird.As mentioned above, the invention also relates to a method for producing a container made of thermoplastic material for the storage and transport of goods, with a whole or partial area double-walled bottom and four integral with the ground or connected, wholly or partially double-walled side walls , wherein the underside of the bottom of this by spaced ribs a bottom plate is welded, which has a circumferential step-shaped stacking edge, the bottom-parallel part is welded to the lower ends of the side walls and closes within the double-walled side walls present cavities downwards. To solve the part of the above-mentioned object of the invention, the invention proposes that the ribs which separate the bottom and the bottom plate are produced completely as part of the bottom or completely as part of the bottom plate, that the bottom parallel part of the stack edge at its bottom Ends of the side walls facing top is generated free of ribs and that the bottom plate is reibverschweißt with the rest of the container.

Mit dem hier angegebenen Verfahren kann ein Behälter der vorstehend erläuterten Art schnell, energiesparend, kostengünstig und mit einer hohen Qualität hergestellt werden. Dabei ist selbstverständlich die Gestaltung von Bodenplatte und übrigem Behälter so, dass eine für das Reibschweißen nötige relative Bewegungsfreiheit in Richtung der Schweißebene in einem ausreichenden Maße gewährleistet ist. Am Ende des Reibschweißvorganges werden die Bodenplatte und der übrige Behälter dann in ihrer Soll-Position relativ zueinander fixiert, bis der Schweißbereich ausreichend abgekühlt und verfestigt ist.With the method given here, a container of the type described above can be produced quickly, energy-efficiently, inexpensively and with a high quality. In this case, of course, the design of the bottom plate and the rest of the container so that a necessary for the friction welding relative freedom of movement in the direction of the welding plane is ensured to a sufficient extent. At the end of the friction welding process, the bottom plate and the rest of the container are then fixed in their desired position relative to each other until the welding region is sufficiently cooled and solidified.

Weiter schlägt die Erfindung vor, dass der Boden und die Bodenplatte in wenigstens einer ersten Schweißebene und die unteren Enden der Seitenwände und der bodenparallele Teil des Stapelrandes der Bodenplatte in wenigstens einer zur ersten Schweißebene parallelen, höhenversetzten zweiten Schweißebene gleichzeitig miteinander reibverschweißt werden. Das Reibschweißen erfolgt hier vorteilhaft in mehreren Ebenen gleichzeitig, die parallel zueinander verlaufen und die so gewählt werden können, dass eine möglichst einfache Formgebung von Bodenplatte und übrigem Behälter im Bereich ihrer Verschweißung miteinander erzielt wird.Furthermore, the invention proposes that the bottom and the bottom plate in at least one first welding plane and the bottom ends of the side walls and the bottom parallel part of the stacking edge of the bottom plate are simultaneously friction-welded together in at least one height-offset second welding plane parallel to the first welding plane. The friction welding takes place here advantageously in several planes simultaneously, which run parallel to each other and which can be chosen so that the simplest possible shaping of the bottom plate and the rest of the container in the region of their welding is achieved.

Um den Reibschweißvorgang besonders schnell und wirksam durchführen zu können, ist weiterhin vorgesehen, dass das Reibschweißen mit einer Schwingungsamplitude erfolgt, die gleich der oder größer als die Dicke der Rippen und/oder der unteren Enden der Seitenwände ist. Dabei führt diese relativ große Schwingungsamplitude zu keinerlei Problemen, weil immer ein linienförmiger Bereich des einen Behälterteils auf einen flächigen Bereich des anderen Behälterteils trifft. Somit stellt die in der Praxis in der Regel geringe Dicke der unteren Enden der Seitenwände und/oder der Rippen keine Beschränkung für das Maß der Schwingungsamplitude im Reibschweißvorgang dar. Beispielsweise ist es so möglich, bei einer Dicke der unteren Seitenwandenden oder der Rippen von etwa 2 mm beim Reibschweißen eine Schwingungsamplitude von etwa ±2 mm oder mehr, d.h. von insgesamt etwa 4 mm oder mehr, zu verwenden.In order to carry out the friction welding process particularly quickly and effectively, it is further provided that the friction welding takes place with a vibration amplitude which is equal to or greater than the thickness of the ribs and / or the lower ends of the side walls. In this case, this relatively large oscillation amplitude does not cause any problems, because always a line-shaped region of one container part strikes a flat region of the other container part. Thus, in practice, usually small thickness of the lower ends of the side walls and / or For example, with a thickness of the lower side wall ends or ribs of about 2 mm in friction welding, it is possible to have a vibration amplitude of about ± 2 mm or more, ie, about 4 mm in total or more to use.

Im Folgenden wird ein Ausführungsbeispiel der Erfindung anhand einer Zeichnung erläutert. Die Figuren der Zeichnung zeigen:

  • Figur 1 einen Behälter in einer auf den Kopf gedrehten Stellung in einer perspektivischen Ansicht, teils in aufgebrochener Darstellung,
  • Figur 2 den Behälter aus Figur 1 in seiner normalen Stellung in einer Seitenansicht, teils im Vertikalschnitt, und
  • Figur 3 das in Figur 2 eingekreist Detail "A" in vergrößerter Darstellung.
In the following an embodiment of the invention will be explained with reference to a drawing. The figures of the drawing show:
  • FIG. 1 a container in a turned-up position in a perspective view, partly in a broken view,
  • FIG. 2 the container off FIG. 1 in its normal position in a side view, partly in vertical section, and
  • FIG. 3 this in FIG. 2 circled detail "A" in an enlarged view.

Figur 1 zeigt einen Behälter 1 in einer auf den Kopf gedrehten Stellung, in der eine offene Seite des Behälters 1 nach unten und ein Boden 2 des Behälters 1 nach oben weist, in einer teilweise aufgebrochenen Darstellung. Mit der hier nach oben weisenden Unterseite 23 des Bodens 2 sind längs und quer verlaufende Rippen 20 einstückig ausgeführt, die der Verstärkung des Bodens 2 dienen. FIG. 1 shows a container 1 in a turned-up position in which an open side of the container 1 down and a bottom 2 of the container 1 facing upward, in a partially broken view. With the upwardly facing bottom 23 of the bottom 2 longitudinal and transverse ribs 20 are made in one piece, which serve to reinforce the bottom 2.

Mit dem Boden 2 sind vier Wände 3 verbunden oder einstückig ausgeführt. Die Wände 3 sind über einen Teil ihrer Länge und Höhe doppelwandig ausgebildet, wobei dort innerhalb der Seitenwände 3 vertikal verlaufende, die Doppelwände miteinander verbindende, mit diesen einstückige Stege 30 angeordnet sind.With the bottom 2 four walls 3 are connected or made in one piece. The walls 3 are double-walled over part of their length and height, wherein there are arranged within the side walls 3 vertically extending, the double walls interconnecting, with these integral webs 30.

Weiterhin umfasst der Behälter 1 eine Bodenplatte 4, die einen umlaufenden, stufenförmigen Stapelrand 40 aufweist. Die Bodenplatte 4 ist mit ihrer den freien Enden 21 der Rippen 20 zugewandten Seite mit dem Boden 2 durch Reibschweißen verbunden. Gleichzeitig ist die Bodenplatte 4 im Bereich ihres Stapelrandes 40 mit der den unteren Enden 31 der Seitenwände 3 zugewandten Seite des bodenparallelen Teils 42 des Stapelrandes 40 ebenfalls reibverschweißt. Dadurch werden Hohlräume zwischen den einander kreuzenden Rippen 20 und Hohlräume 33 innerhalb der doppelwandigen Seitenwände 3 dicht verschlossen. Durch die doppelwandige Ausführung des Bodens 2 mit der angeschweißten Bodenplatte 4 und den dazwischen angeordneten Rippen 20 und durch die doppelwandigen Seitenwände 30 mit den Stegen 30 darin wird der Behälter 1 bei einem geringen Gewicht sehr stabil und kann auch schwere Lasten ohne nennenswerte Verformung aufnehmen.Furthermore, the container 1 comprises a bottom plate 4, which has a peripheral, stepped stacking edge 40. The bottom plate 4 is connected with its the free ends 21 of the ribs 20 side facing the bottom 2 by friction welding. At the same time, the bottom plate 4 is also friction-welded in the region of its stacking edge 40 with the side of the bottom-parallel part 42 of the stacking edge 40 facing the bottom ends 31 of the side walls 3. As a result, cavities between the intersecting ribs 20 and cavities 33 are sealed within the double-walled side walls 3. Due to the double-walled design the bottom 2 with the welded bottom plate 4 and the ribs 20 disposed therebetween and through the double-walled side walls 30 with the webs 30 therein, the container 1 becomes very stable at a low weight and can also accommodate heavy loads without appreciable deformation.

Die in Figur 1 dem Betrachter zugewandte Unterseite der Bodenplatte 4 bildet hier eine vollflächig glatte Fläche, die einen störungsfreien und geräuscharm den Transport des Behälters 1, auch in einem beladenem Zustand, auf einer Rollen- oder Kugelbahn gewährleistet. Alternativ kann die Bodenplatte 4 auch kranzförmig umlaufend ausgeführt sein.In the FIG. 1 the underside facing the viewer underside of the bottom plate 4 here forms a smooth surface over its entire surface, which ensures a trouble-free and quiet transport of the container 1, even in a loaded condition, on a roller or ball track. Alternatively, the bottom plate 4 can also be executed in a circular shape.

Figur 2 zeigt in Behälter 1 aus Figur 1 in einer Seitenansicht, wobei ein linker Endbereich des Behälters 1 im Vertikalschnitt dargestellt ist. Der Behälter 1 umfasst auch hier wieder den Boden 2 und vier einstückig mit diesem ausgeführte Seitenwände 3, die in Teilbereichen doppelwandig ausgebildet sind. Wie in der Schnittdarstellung im linken Teil der Figur 2 erkennbar ist, ist die Oberseite 22 des Bodens 2 glattflächig ausgebildet, so dass dort zu lagernde und zu transportierenden Güter gut aufgenommen werden können und eine leichte Reinigung des Inneren des leeren Behälters 1 möglich ist. Alternativ kann die Oberseite 22 des Bodens 2 auch an spezielle aufzunehmende Güter formangepasst ausgeführt sein. FIG. 2 shows in container 1 FIG. 1 in a side view, wherein a left end portion of the container 1 is shown in vertical section. Again, the container 1 comprises the bottom 2 and four side walls 3 formed integrally therewith, which are double-walled in partial areas. As in the sectional view in the left part of the FIG. 2 can be seen, the top 22 of the bottom 2 is formed smooth surface, so that there can be well stored and transported goods there and easy cleaning of the interior of the empty container 1 is possible. Alternatively, the upper side 22 of the bottom 2 can also be embodied in a shape adapted to special items to be picked up.

Mit dem Boden 2 sind nach unten vorstehende, in Längs- und Querrichtung des Behälters 1 verlaufende Rippen 20 einstückig hergestellt. Die Seitenwände 3 besitzen in Vertikalrichtung verlaufende Stege 30, die auch in dem unteren, doppelwandigen Bereich der Seitenwände 3 vorhanden sind.With the bottom 2 downwardly projecting, extending in the longitudinal and transverse direction of the container 1 ribs 20 are made in one piece. The side walls 3 have vertically extending webs 30, which are also present in the lower, double-walled region of the side walls 3.

Unterseitig ist die Bodenplatte 4 mit dem übrigen Behälter 1 durch einen Reibschweißvorgang verbunden. Die Bodenplatte 4 ist hier eine sowohl oberseitig wie unterseitig glatte, rippenfreie Platte, die randseitig umlaufend den stufenförmigen Stapelrand 40 aufweist. In Bereich ihrer Oberseite 45 ist die Bodenplatte 4 mit den nach unten weisenden freien Enden 21 der Rippen 20 durch den Reibschweißvorgang verschweißt. Gleichzeitig ist der Stapelrand 40 mit seiner glattflächigen Oberseite mit den unteren Enden 31 der Seitenwände 3 durch denselben Reibschweißvorgang umlaufend dicht verschweißt. Hierdurch werden Hohlräume 33 innerhalb der Seitenwände 3 sowie Hohlräume zwischen Boden 2 und Bodenplatte 4 dicht verschlossen.On the underside, the bottom plate 4 is connected to the rest of the container 1 by a friction welding. The base plate 4 is here a both smooth on the top side and underside, rib-free plate, the edge circumferentially has the step-shaped stack edge 40. In the region of its upper side 45, the bottom plate 4 is welded to the downward-pointing free ends 21 of the ribs 20 by the friction welding process. At the same time the stacking edge 40 is welded with its smooth-surfaced top with the lower ends 31 of the side walls 3 by the same friction welding circumferentially tight. As a result, cavities 33 within the side walls 3 and cavities between the bottom 2 and bottom plate 4 are sealed.

Mit der Unterseite des bodenparallelen Teils 42 des Stapelrandes 40 kann der Behälter 1 auf einen gleichartigen weiteren Behälter 1 in diesem eingreifend aufgesetzt werden, um einen sicheren Behälterstapel zu bilden.With the underside of the bottom-parallel part 42 of the stacking edge 40 of the container 1 can be placed on a similar further container 1 in this engaging to form a secure container stack.

Figur 3 zeigt in einer vergrößerten Darstellung das in Figur 2 eingekreist Detail "A". Links in Figur 3 ist eine der Seitenwände 3 erkennbar, die in ihrem unteren Teil doppelwandig ausgeführt ist. Im Hintergrund liegt innerhalb der Seitenwand 3 einer der vertikalen Stege 30, die sich auch nach oben über den doppelwandigen Bereich der Seitenwand 3 hinaus erstrecken. FIG. 3 shows in an enlarged view the in FIG. 2 circled detail "A". Left in FIG. 3 one of the side walls 3 can be seen, which is double-walled in its lower part. In the background lies within the side wall 3 of one of the vertical webs 30, which also extend upwards beyond the double-walled region of the side wall 3 addition.

Mit der Seitenwand 3 einstückig verbunden ist der Boden 2 des Behälters 1, dessen Oberseite 22 glattflächig und eben ausgebildet ist. Mit der Unterseite 23 des Bodens 2 sind die Rippen 20 einstückig hergestellt, wobei in Figur 3 nur eine parallel zur Zeichnungsebene verlaufende Rippe 20 sichtbar ist. Der die Seitenwände 3 und den Boden 2 mit den Rippen 20 umfassende Teil des Behälters 1 kann in einem ersten Spritzvorgang einstückig aus thermoplastischem Kunststoff hergestellt werden.Integrally connected to the side wall 3, the bottom 2 of the container 1, the top 22 is smooth and flat. With the bottom 23 of the bottom 2, the ribs 20 are made in one piece, wherein in FIG. 3 only one parallel to the plane of the drawing extending rib 20 is visible. The part of the container 1 comprising the side walls 3 and the bottom 2 with the ribs 20 can be produced in one piece from a thermoplastic material in a first injection process.

Im unteren Teil der Figur 3 ist ein Teil der Bodenplatte 4 sichtbar, die in ihrem Randbereich den umlaufenden Stapelrand 40 aufweist. Der Stapelrand 40 setzt sich aus einem von der Bodenplatte 4 nach oben abgewinkelten vertikalen Teil 41 und einem davon nach außen abgewinkelten, bodenparallelen Teil 42 zusammen. Auch die Bodenplatte 4 mit dem Stapelrand 40 lässt sich als einstückiges Spritzgussteil aus thermoplastischem Kunststoff herstellen.In the lower part of the FIG. 3 a part of the bottom plate 4 is visible, which has in its edge region the peripheral stack edge 40. The stacking edge 40 is composed of a vertical part 41 which is angled upwards from the base plate 4 and a part 42 which is angled outwards and is parallel to the ground. The bottom plate 4 with the stack edge 40 can be produced as a one-piece injection molded part made of thermoplastic material.

Der erste Teil des Behälters 1 mit den Wänden 3 und dem Boden 2 einerseits und der zweite Teil des Behälters 1 mit der Bodenplatte 4 und dem Stapelrand 40 andererseits sind miteinander durch gleichzeitiges Reibschweißen in zwei Schweißebenen 51 und 52 verbunden. Die erste Schweißebene 51 liegt dabei in der Höhe der Oberseite 45 der Bodenplatte 4 und der nach unten weisenden freien Enden 21 der Rippen 20. Die zweite Schweißebene 52 verläuft parallel zur ersten Schweißebene 51, jedoch relativ zu dieser nach oben höhenversetzt in Höhe der freien unteren Enden 31 der Seitenwände 3 und der Stege 30 sowie der Oberseite 42' des bodenparallelen Teils 42 des Stapelrandes 40 der Bodenplatte 4.The first part of the container 1 with the walls 3 and the bottom 2 on the one hand and the second part of the container 1 with the bottom plate 4 and the stacking edge 40 on the other hand are connected to each other by simultaneous friction welding in two welding levels 51 and 52. The first welding plane 51 lies in the height of the top 45 of the bottom plate 4 and the downwardly facing free ends 21 of the ribs 20. The second welding plane 52 is parallel to the first welding plane 51, but relative to this upwardly offset in height at the level of the lower free Ends 31 of the side walls 3 and the webs 30 and the top 42 'of the bottom-parallel part 42 of the stacking edge 40 of the bottom plate. 4

Wie die Figur 3 veranschaulicht, liegen in der ersten Schweißebene 51 linienförmige Elemente in Form der freien Enden 21 der Rippen 20 einerseits und ein flächiges Element in Form der glattflächigen Oberseite 45 der Bodenplatte 4 für den Reibschweißvorgang aneinander an. In der zweiten Schweißebene 52 liegen die linienförmigen unteren Enden 31 der Seitenwände 3 und der Stege 30 an einem flächigen Element in Form der glattflächigen Oberseite 42' des bodenparallelen Teils 42 des Stapelrandes 40 aneinander an. Auf diese Weise steht immer eine ausreichend große Kontakt- und Bewegungsfläche für den Reibschweißvorgang zur Verfügung und es kann problemlos die für den Reibschweißvorgang nötige Bewegung der zu verschweißen Teile relativ zueinander erzeugt werden.As the FIG. 3 illustrated lie in the first welding plane 51 line-shaped elements in the form of the free ends 21 of the ribs 20 on the one hand and a flat element in the form of the smooth-surfaced top 45 of the bottom plate 4 for the friction welding together. In the second welding plane 52, the line-shaped lower ends 31 of the side walls 3 and of the webs 30 rest against one another on a flat element in the form of the smooth-surfaced upper side 42 'of the bottom-parallel part 42 of the stacking edge 40. In this way, there is always a sufficiently large contact and movement surface for the friction welding process available and it can easily be necessary for the friction welding movement of the parts to be welded relative to each other generated.

Am Ende des Reibschweißvorganges werden die miteinander zu verschweißenden Teile in ihrer Soll-Position relativ zueinander fixiert, bis die durch die Reibung plastifizierten Kunststoffmaterialien der beiden Teile miteinander schmelzverbunden sind und sich dann ausreichend abgekühlt haben. Nach dem Reibschweißvorgang sind der Stapelrand 40 und die übrige Bodenplatte 4 dicht und sicher mit den Seitenwänden 3 und dem Boden 2 des Behälters 1 verbunden. Damit sind die Hohlräume 30 innerhalb der Seitenwände 3 und die Hohlräume zwischen dem Boden 2 und der Bodenplatte 4 nach außen dicht abgeschlossen.At the end of the friction welding process, the parts to be welded together are fixed in their desired position relative to each other until the plasticized by the friction plastic materials of the two parts are melt-bonded together and then cooled sufficiently. After the friction welding operation, the stacking edge 40 and the remaining bottom plate 4 are tightly and securely connected to the side walls 3 and the bottom 2 of the container 1. Thus, the cavities 30 within the side walls 3 and the cavities between the bottom 2 and the bottom plate 4 are sealed to the outside.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

Zeichencharacter Bezeichnungdescription 11 Behältercontainer 22 Bodenground 2020 Rippenribs 2121 freies Ende von 20free end of 20 2222 Oberseite von 2Top of 2 2323 Unterseite von 2Bottom of 2 33 Seitenwändeside walls 3030 Stege in 3Footbridges in 3 3131 unteres Ende von 3lower end of 3 3333 Hohlräume in 3Cavities in 3 44 Bodenplattebaseplate 4040 Stapelrandstacking edge 4141 vertikaler Teil von 40vertical part of 40 4242 bodenparalleler Teil von 40ground parallel part of 40 42'42 ' Oberseite von 42Top of 42 4545 Oberseite von 4Top of 4 5151 erste Schweißebenefirst welding level 5252 zweite Schweißebenesecond welding level

Claims (8)

Behälter (1) aus thermoplastischem Kunststoff für die Lagerung und den Transport von Gütern, mit einem ganz- oder teilflächig doppelwandigen Boden (2) und mit vier mit dem Boden (2) einstückigen oder verbundenen, ganz- oder teilflächig doppelwandigen Seitenwänden (3), wobei unter dem Boden (2) von diesem durch Rippen (20) beabstandet eine Bodenplatte (4) angeschweißt ist, die einen umlaufenden stufenförmigen Stapelrand (40) aufweist, dessen bodenparalleler Teil (42) an die unteren Enden (31) der Seitenwände (3) angeschweißt ist und innerhalb der doppelwandigen Seitenwände (3) vorliegende Hohlräume (43) nach unten hin abschließt, dadurch gekennzeichnet,
dass die den Boden (2) und die Bodenplatte (4) voneinander beabstandenden Rippen (20) vollständig Teil des Bodens (2) oder vollständig Teil der Bodenplatte (4) sind,
dass der bodenparallele Teil (42) des Stapelrandes (40) an seiner den unteren Enden (31) der Seitenwände (3) zugewandten Oberseite (42') rippenfrei ist und
dass die Bodenplatte (4) mit dem übrigen Behälter (1) reibverschweißt ist.Container (1) made of thermoplastic material for the storage and transport of goods, with a whole or partial area double-walled bottom (2) and four with the bottom (2) integral or connected, whole or partial double-walled side walls (3), wherein a base plate (4) is welded under the base (2) spaced therefrom by ribs (20) and comprising a peripheral stepped stacking edge (40), the bottom parallel part (42) of which is attached to the lower ends (31) of the side walls (3 ) is welded and within the double-walled side walls (3) present cavities (43) closes downwards, characterized
(20) part of the bottom (2) completely or part of the bottom plate (4) that the bottom (2) and the bottom plate (4) from each other be spaced ribs completely,
that the bottom-parallel part (42) of the stacking edge (40) at its the lower ends (31) of the side walls (3) facing upper side (42 ') is free of ribs and
that the base plate (4) with the remainder of the container (1) is friction-welded. Behälter nach Anspruch 1, dadurch gekennzeichnet, dass der Boden (2) und die Bodenplatte (4) in wenigstens einer ersten Schweißebene (51) und die unteren Enden (31) der Seitenwände (3) und der bodenparallele Teil (42) des Stapelrandes (40) der Bodenplatte (4) in wenigstens einer zur ersten Schweißebene (51) parallelen, höhenversetzten zweiten Schweißebene (52) miteinander reibverschweißt sind.Container according to claim 1, characterized in that the bottom (2) and the bottom plate (4) in at least a first welding plane (51) and the lower ends (31) of the side walls (3) and the bottom parallel part (42) of the stack edge ( 40) of the bottom plate (4) in at least one to the first welding plane (51) parallel, offset in height second welding plane (52) are friction welded together. Behälter nach Anspruch 2, dadurch gekennzeichnet, dass die den Boden (2) und die Bodenplatte (4) voneinander beabstandenden Rippen (20) einstückig mit dem Boden (2) ausgebildet sind und dass die erste Schweißebene (51) in Höhe des freien unteren Endes (21) der Rippen (20) und der den Rippen (20) zugewandten rippenfreien Oberseite (45) der Bodenplatte (4) liegt.Container according to claim 2, characterized in that the ribs (20) spaced from each other from the bottom (2) and the bottom plate (4) are formed integrally with the bottom (2) and that the first welding plane (51) at the level of the free lower end (21) of the ribs (20) and the ribs (20) facing rib-free upper side (45) of the bottom plate (4). Behälter nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass im Inneren der doppelwandigen Seitenwände (3) deren Doppelwände miteinander einstückig verbindende vertikale Stege (30) vorgesehen sind, die bündig mit den unteren Enden (31) der Seitenwände (3) enden, und dass die zweite Schweißebene (52) in Höhe der unteren Enden (31) der Seitenwände (3) und der Stege (30) und der Oberseite (42') des bodenparallelen Teils (42) des Stapelrandes (40) liegt.Container according to one of claims 1 to 3, characterized in that in the interior of the double-walled side walls (3) whose double walls are integrally connected to each other vertical webs (30) are provided, which terminate flush with the lower ends (31) of the side walls (3), and in that the second welding plane (52) lies at the level of the lower ends (31) of the side walls (3) and the webs (30) and the upper side (42 ') of the bottom-parallel part (42) of the stacking edge (40). Behälter nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Bodenplatte (4) vollflächig ausgeführt ist und den Boden (2) vollflächig überdeckt oder umlaufend kranzförmig ausgeführt ist und den Boden (2) teilflächig nur randseitig umlaufend überdeckt.Container according to one of claims 1 to 4, characterized in that the bottom plate (4) is executed over the entire surface and the bottom (2) over the entire surface covered or circumferentially executed in a wreath and the bottom (2) part of the area covered only peripherally circumferentially. Verfahren zum Herstellen eines Behälters (1) aus thermoplastischem Kunststoff für die Lagerung und den Transport von Gütern, mit einem ganz- oder teilflächig doppelwandigen Boden (2) und mit vier mit dem Boden (2) einstückigen oder verbundenen, ganz- oder teilflächig doppelwandigen Seitenwänden (3), wobei unterseitig an den Boden (2) von diesem durch Rippen (20) beabstandet eine Bodenplatte (4) angeschweißt wird, die einen umlaufenden stufenförmigen Stapelrand (40) aufweist, dessen bodenparalleler Teil (42) an die unteren Enden (31) der Seitenwände (3) angeschweißt wird und innerhalb der doppelwandigen Seitenwände (3) vorliegende Hohlräume (33) nach unten hin abschließt,
dadurch gekennzeichnet,
dass die den Boden (2) und die Bodenplatte(4) voneinander beabstandenden Rippen (20) vollständig als Teil des Bodens (2) oder vollständig als Teil der Bodenplatte (4) erzeugt werden,
dass der bodenparallele Teil (42) des Stapelrandes (40) an seiner den unteren Enden (31) der Seitenwände (3) zugewandten Oberseite (42') rippenfrei erzeugt wird und
dass die Bodenplatte (4) mit dem übrigen Behälter (1) reibverschweißt wird.Method for producing a container (1) made of thermoplastic material for the storage and transport of goods, with a whole or partial area double-walled bottom (2) and four with the bottom (2) integral or connected, wholly or partially double-walled side walls (3), wherein a bottom plate (4) is welded to the bottom (2) of this by spaced apart from ribs (20), which has a peripheral stepped stacking edge (40) whose bottom parallel part (42) at the lower ends (31 ) of the side walls (3) is welded and closes within the double-walled side walls (3) present cavities (33) downwards,
characterized,
in that the ribs (20) separating the bottom (2) and the bottom plate (4) are produced completely as part of the bottom (2) or completely as part of the bottom plate (4),
that parallel to the floor part (42) of the stacking edge (40) at its lower ends (31) of the side walls (3) facing the upper side (42 ') is produced rib-free and
that the base plate (4) with the remainder of the container (1) is friction-welded. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass der Boden (2) und die Bodenplatte (4) in wenigstens einer ersten Schweißebene (51) und die unteren Enden (31) der Seitenwände (3) und der bodenparallele Teil (42) des Stapelrandes (40) der Bodenplatte (4) in wenigstens einer zur ersten Schweißebene (51) parallelen, höhenversetzten zweiten Schweißebene (52) gleichzeitig miteinander reibverschweißt werden.A method according to claim 6, characterized in that the bottom (2) and the bottom plate (4) in at least a first welding plane (51) and the lower ends (31) of the side walls (3) and the bottom parallel part (42) of the stack edge ( 40) of the bottom plate (4) in at least one to the first welding plane (51) parallel, offset in height second welding plane (52) are friction welded together simultaneously. Verfahren nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass das Reibschweißen mit einer Schwingungsamplitude erfolgt, die gleich der oder grö-βer als die Dicke der Rippen (20) und/oder der unteren Enden (31) der Seitenwände (3) ist.A method according to claim 6 or 7, characterized in that the friction welding is carried out with a vibration amplitude equal to or greater than the thickness of the ribs (20) and / or the lower ends (31) of the side walls (3).
EP20100196167 2009-12-23 2010-12-21 Thermoplastic container Not-in-force EP2338799B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009055245A DE102009055245A1 (en) 2009-12-23 2009-12-23 Container made of thermoplastic material

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EP2338799A1 true EP2338799A1 (en) 2011-06-29
EP2338799B1 EP2338799B1 (en) 2012-09-19

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CN105939939A (en) * 2014-01-31 2016-09-14 格奥尔格.乌茨控股股份公司 Stackable plastics container
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DE102009055245A1 (en) 2011-06-30

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