EP1923317A2 - Plastic pallet with anti-slip coated loading surface - Google Patents

Plastic pallet with anti-slip coated loading surface Download PDF

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Publication number
EP1923317A2
EP1923317A2 EP07022139A EP07022139A EP1923317A2 EP 1923317 A2 EP1923317 A2 EP 1923317A2 EP 07022139 A EP07022139 A EP 07022139A EP 07022139 A EP07022139 A EP 07022139A EP 1923317 A2 EP1923317 A2 EP 1923317A2
Authority
EP
European Patent Office
Prior art keywords
pallet
plastic pallet
loading surface
plastic
injection molding
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
EP07022139A
Other languages
German (de)
French (fr)
Other versions
EP1923317B1 (en
EP1923317A3 (en
Inventor
Jan Vinke
Ludo Gielen
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.)
Schoeller Allibert GmbH
Original Assignee
Schoeller Arca Systems 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
Application filed by Schoeller Arca Systems GmbH filed Critical Schoeller Arca Systems GmbH
Priority to PL07022139T priority Critical patent/PL1923317T3/en
Publication of EP1923317A2 publication Critical patent/EP1923317A2/en
Publication of EP1923317A3 publication Critical patent/EP1923317A3/en
Application granted granted Critical
Publication of EP1923317B1 publication Critical patent/EP1923317B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65D19/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D19/0004—Rigid pallets without side walls
    • B65D19/0006—Rigid pallets without side walls the load supporting surface being made of a single element
    • B65D19/0008—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface
    • B65D19/001—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface the base surface being made of a single element
    • B65D19/0012—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface the base surface being made of a single element forming a continuous plane contact surface
    • 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
    • B65D19/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D19/38—Details or accessories
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00009—Materials
    • B65D2519/00014—Materials for the load supporting surface
    • B65D2519/00034—Plastic
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00009—Materials
    • B65D2519/00049—Materials for the base surface
    • B65D2519/00069—Plastic
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00263—Overall construction of the pallet
    • B65D2519/00268—Overall construction of the pallet made of one piece
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00283—Overall construction of the load supporting surface
    • B65D2519/00288—Overall construction of the load supporting surface made of one piece
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00283—Overall construction of the load supporting surface
    • B65D2519/00308—Overall construction of the load supporting surface grid type, e.g. perforated plate
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00313—Overall construction of the base surface
    • B65D2519/00318—Overall construction of the base surface made of one piece
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00313—Overall construction of the base surface
    • B65D2519/00328—Overall construction of the base surface shape of the contact surface of the base
    • B65D2519/00343—Overall construction of the base surface shape of the contact surface of the base contact surface being substantially in the form of a panel
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00736—Details
    • B65D2519/00776—Accessories for manipulating the pallet
    • B65D2519/00796—Guiding means for fork-lift
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00736—Details
    • B65D2519/00825—Finishing of the external surfaces
    • B65D2519/0083—Anti-slip means
    • B65D2519/0084—Separated elements, e.g. including in-moulded elements

Definitions

  • the invention relates to a plastic pallet for receiving and transporting goods or other general cargo.
  • Pallets in particular Europool range (colloquially also called euro pallet) are extensively used for the transport of various goods. While wooden Euro pallets are widespread, plastic pallets are also increasingly being used. The advantage of plastic pallets is that they are significantly less sensitive to damage and easier to clean and have a very long life. Also, they have a much better resistance to environmental influences, such as moisture. In wood pallets, germs or fungi can accumulate, which is inadmissible in particular when in contact with food. A disadvantage of plastic pallets compared to wooden pallets is that they have lower coefficients of friction and thus easier to slip goods that are stacked on the pallet. To save weight, the plastic pallets generally have a plurality of openings, which are limited by narrow ribs.
  • the plastic pallets In order to reduce the problem of slippage, the plastic pallets frequently have mechanical detents in the form of point-shaped or strip-shaped elevations formed on the loading surface or a boundary edge integrally formed on the outer edge of the loading surface.
  • These mechanical detents are disadvantageous because they must be adapted to the goods to be transported, if a corresponding anti-skid device is intended.
  • the versatility is reduced because the range then usually for the corresponding Special goods must be used.
  • an integrally formed on the edge of the pallet, the sliding of the goods limiting edge the disadvantage that the loading area thereby reduced and also the removal of the goods by simply pulling off the pallet is hindered. If goods are partially parked on the elevations or the boundary, the problem of wobbling occurs, which is associated with a reduced stability.
  • the DE 195 22 000 C2 discloses a plastic pallet in which a lower part is welded to an upper part and in which a non-slip coating is locally applied to the loading surface in linear regions.
  • This is made by a multi-component injection molding, in which movable cores are provided on the tool in the region of the loading surface, which are withdrawn after the first injection molding of manufacturing a base pallet and subsequently the material of the anti-slip coating is injected into the groove-shaped regions formed by the cores. Since the slip-coated areas protrude beyond the base pallet base area, at the transition area from the base area to the slip-coated areas, edges are created in which dirt can accumulate. Furthermore arise on the anti-slip coating upwardly directed burrs. In addition, due to the moving cores increased production costs in the production of the injection mold. In addition, the universal usability is also limited here.
  • Object of the present invention is to provide a plastic pallet that can be used multifunctional for the safe transport of any goods, easy to clean and easy to manufacture and yet in a simple way includes a slip protection for the transported goods and also.
  • a plastic pallet is created whose loading surface is designed to be continuous and integrally slide-resistant. This is preferably done by a sprayed-on anti-slip layer.
  • the main surface of the pallet is defined by the outer dimensions of the pallet in the direction of latitude and longitude, which as a rule also represents the loading surface.
  • the loading area can also be smaller than the said main area.
  • This anti-slip coating is expediently formed from a thermoplastic elastomer (TPE).
  • TPE thermoplastic elastomer
  • the TPE may be a polypropylene based material combination.
  • the base pallet ie the plastic pallet without the anti-slip layer, is made of polypropylene, the advantage of the largely sorted plastic combination results for the recycling.
  • the base pallet of other plastics preferably thermoplastics, such as, for example, be made of polyethylene.
  • this anti-slip layer ensures that there is an increased coefficient of friction between the goods and the plastic pallet.
  • the adhesion preferably corresponds approximately to the values of wood, in particular a cut so otherwise untreated wood surface.
  • the surface of the pallet in particular the loading surface, is preferably flat.
  • a roughness R t of ⁇ 3mm is advantageous.
  • smaller roughness depths of 0.5 mm and smaller are conceivable.
  • the roughness is selected between 0.3 and 0.7 mm, to improve the stability.
  • the plastic pallet can not only in the area of the loading surface with the anti-sliding layer but also in the area of the storage area to the bottom and / or the engagement surfaces of the contact surface of forklift tines u. Like. Means be provided.
  • a uniform layer of the anti-slip layer of at least 0.5 mm is preferably provided, but higher layer thicknesses of about 5 mm are also possible.
  • the layer thickness is about 1 and 3 mm.
  • the plastic pallet is preferably made of two materials and can be produced in an injection molding process.
  • a basic pallet is produced in a first step.
  • This base pallet has essentially the shape of the Euro pallet and is designed so dimensionally stable that it can safely pick up the load of goods.
  • the sliding-inhibiting region is integrally formed integrally with the same tool by means of a multi-component injection molding process on the base pallet.
  • a movable punch is provided, which is initially in an inner position, so that the base pallet is produced when the first plastic is injected.
  • the movable punch is displaced outward by a defined area so that a cavity is formed between the base pallet and the displaced core, into which the second plastic is injected.
  • the second plastic is the material from which the slip-resistant layer is formed.
  • a cohesive connection is achieved between the base pallet and the anti-sliding layer.
  • the slide-inhibiting layer is inseparably connected to the base pallet.
  • the size of the stampable punch corresponds to the entire pallet area, in particular the loading area. This has the advantage that the entire cargo area is covered with the anti-slip layer, which ensures that any goods can be safely transported and the range is thus universally applicable.
  • the pallet is exemplified as Euro pallet. This usually has the dimensions 1200 x 800 x 144 mm and is essentially cuboid.
  • the overhead surface is the main pallet surface.
  • the main pallet surface also referred to below as loading surface 2
  • the goods to be transported are stacked.
  • the loading surface 2 corresponds to the said main surface of the pallet.
  • the main surface of the pallet has a small radius at the edges. However, the edges in the height direction of the pallet are characterized by a much larger radius.
  • the loading surface 2 is flat and continuously coated with a non-slip layer throughout. In addition, the loading surface 2 has a plurality of openings.
  • a load-bearing three-dimensional structure is formed which generates a high load-bearing capacity combined with the least possible use of material.
  • the apertures of the loading surface 2 are open, but it is also conceivable that at least partially closed recesses are provided.
  • the geometry of the apertures is expediently dimensioned such that impermissibly large accumulations of material are not formed at any area of the plastic pallet.
  • the apertures are rectangular and are arranged close together, so that the loading surface 2 is formed at these points only by the narrow web-like connections between the apertures.
  • the width of these webs or ribs is 2 to 6mm, in particular about 3mm.
  • the anti-sliding coating is also pulled slightly over the edge region of the ribs or webs, so that the upper region of the rib or web walls is likewise coated in particular at the edge region.
  • In the area of the outer edges areal smaller openings or depressions are formed.
  • the areal proportion of the depressions is smaller, which means that more plastic material is provided here, and that the pallet is thus reinforced at the edges.
  • the loading surface 2 opposite is the storage area 3, which, if necessary, has a sliding-inhibiting layer.
  • Pallet trucks or forklifts are often used to move the pallet. These have two forks which engage through openings in the plastic pallet in the four sides adjacent the loading surface 2 to lift the pallet.
  • the contact areas at which attack the forks of a forklift on the plastic pallet hereinafter referred to as transport surface 4.
  • These transport surfaces 4 are located in the region of said lateral openings of the pallet and point downwards.
  • a sliding-inhibiting layer is preferably provided.
  • Fig. 2 shows different ways in which the plastic pallet can be loaded with goods.
  • Fig. 2a, 2b and 2c show that different beer barrels 10,11,12 can be safely on the pallet. Since the diameter of the barrels in the area of the base between Fig.2a and Fig.2b is different and is transported under Fig. 2c, a larger number of smaller barrels, the advantage of a flat loading surface 2 is that there are no increases to some The goods may only partially stand, so can wobble and slip easily. Likewise, as shown in Fig. 2d, beer crates 13 can be safely picked up. Due to the flat loading surface 2, which is designed to prevent sliding, so the advantages of universal applicability of the plastic pallet 1 with a secure state of the goods are connected.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pallets (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

The pallet (1) has a loading surface (2) that is provided on a pallet main surface, where the loading surface is formed as a single piece with a slide-arrestive coating. The slide-arrestive coating is applied by injection molding, where the loading surface has a partially open structure with apertures that are limited by ribs. The loading surface is uniformly distributed, and the coating has a thickness of about 0.5 to 7 millimeters, preferably 1 to 3 millimeters. The coating is made of a thermoplastic elastomer in particular a polypropylene base. Independent claims are also included for the following: (1) a method for manufacturing a plastic pallet (2) an injection molding tool for manufacturing a plastic pallet.

Description

Die Erfindung betrifft eine Kunststoffpalette für die Aufnahme und den Transport von Waren oder sonstigem Stückgut.The invention relates to a plastic pallet for receiving and transporting goods or other general cargo.

Paletten, insbesondere Europool-Palette (umgangssprachlich auch Euro-Palette genannt) werden in umfangreicher Weise für den Transport diverser Waren verwendet. Während Holz-Euro-Paletten weit verbreitet sind, werden zunehmend häufiger auch Kunststoffpaletten eingesetzt. Der Vorteil von Kunststoffpaletten ist, dass sie deutlich unempfindlicher gegen Beschädigungen und leichter zu reinigen sind und eine sehr lange Lebensdauer aufweisen. Auch weisen sie eine deutlich bessere Beständigkeit gegen Umwelteinflüsse, wie beispielsweise Feuchtigkeit auf. In Holzpaletten können sich Keime oder Pilze festsetzen, was insbesondere beim Kontakt mit Lebensmitteln unzulässig ist. Ein Nachteil von Kunststoffpaletten gegenüber Holzpaletten ist, dass sie schlechtere Reibwerte aufweisen und so Waren, die auf der Palette gestapelt sind, leichter verrutschen können. Zur Gewichtseinsparung weisen die Kunststoffpaletten im allgemeinen eine Vielzahl von Durchbrüchen auf, die durch schmale Rippen begrenzt sind.Pallets, in particular Europool range (colloquially also called euro pallet) are extensively used for the transport of various goods. While wooden Euro pallets are widespread, plastic pallets are also increasingly being used. The advantage of plastic pallets is that they are significantly less sensitive to damage and easier to clean and have a very long life. Also, they have a much better resistance to environmental influences, such as moisture. In wood pallets, germs or fungi can accumulate, which is inadmissible in particular when in contact with food. A disadvantage of plastic pallets compared to wooden pallets is that they have lower coefficients of friction and thus easier to slip goods that are stacked on the pallet. To save weight, the plastic pallets generally have a plurality of openings, which are limited by narrow ribs.

Um das Problem des Verrutschens zu reduzieren, weisen die Kunststoffpaletten häufig mechanische Arretierungen in Form von auf der Beladefläche punkt- oder leistenförmig angeformten Erhöhungen oder einem am Außenrand der Beladefläche angeformten Begrenzungsrand auf. Diese mechanischen Arretierungen sind nachteilig, da sie an die zu transportierenden Waren angepasst sein müssen, sofern eine entsprechende Rutschsicherung beabsichtigt ist. Hierdurch wird allerdings die vielseitige Verwendbarkeit vermindert, da die Palette dann in der Regel für die entsprechenden Spezialwaren verwendet werden muß. Auch weist ein an dem Palettenrand angeformter, das Rutschen der Ware begrenzender Rand, den Nachteil auf, dass die Beladefläche hierdurch reduziert und auch das Abnehmen der Waren durch bloßes Abziehen von der Palette behindert wird. Falls Waren teilweise auf den Erhöhungen oder Begrenzung abgestellt sind, tritt das Problem des Wackelns auf, was mit einer reduzierten Standsicherheit verbunden ist.In order to reduce the problem of slippage, the plastic pallets frequently have mechanical detents in the form of point-shaped or strip-shaped elevations formed on the loading surface or a boundary edge integrally formed on the outer edge of the loading surface. These mechanical detents are disadvantageous because they must be adapted to the goods to be transported, if a corresponding anti-skid device is intended. As a result, however, the versatility is reduced because the range then usually for the corresponding Special goods must be used. Also, an integrally formed on the edge of the pallet, the sliding of the goods limiting edge, the disadvantage that the loading area thereby reduced and also the removal of the goods by simply pulling off the pallet is hindered. If goods are partially parked on the elevations or the boundary, the problem of wobbling occurs, which is associated with a reduced stability.

Die DE 195 22 000 C2 offenbart eine Kunststoffpalette, bei welcher ein Unterteil mit einem Oberteil verschweißt ist und bei der an der Beladefläche in linienförmigen Bereichen lokal eine Antirutschbeschichtung aufgebracht ist. Diese wird durch einen Mehrkomponentenspritzguß gefertigt, bei dem am Werkzeug im Bereich der Beladefläche bewegliche Kerne vorgesehen sind, welche nach dem ersten Spritzgussschritt der Fertigung einer Basispalette zurückgezogen werden und im Anschluß wird das Material der Antirutschbeschichtung in die durch die Kerne geformten nutförmigen Bereiche eingespritzt. Da die rutschbeschichteten Bereiche über die Grundfläche der Basispalette hinaus vorstehen, ergeben sich am Übergangsbereich von Grundfläche zu den rutschbeschichteten Bereichen Kanten, in denen sich Schmutz sammeln kann. Ferner entstehen an der Antirutschbeschichtung nach oben gerichtete Grate. Außerdem entstehen durch die beweglichen Kerne erhöhte Herstellkosten bei der Herstellung der Spritzgussform. Zudem ist auch hier die universelle Verwendbarkeit begrenzt.The DE 195 22 000 C2 discloses a plastic pallet in which a lower part is welded to an upper part and in which a non-slip coating is locally applied to the loading surface in linear regions. This is made by a multi-component injection molding, in which movable cores are provided on the tool in the region of the loading surface, which are withdrawn after the first injection molding of manufacturing a base pallet and subsequently the material of the anti-slip coating is injected into the groove-shaped regions formed by the cores. Since the slip-coated areas protrude beyond the base pallet base area, at the transition area from the base area to the slip-coated areas, edges are created in which dirt can accumulate. Furthermore arise on the anti-slip coating upwardly directed burrs. In addition, due to the moving cores increased production costs in the production of the injection mold. In addition, the universal usability is also limited here.

Aufgabe der vorliegenden Erfindung ist es, eine Kunststoffpalette zu schaffen, die multifunktional für den sicheren Transport beliebiger Güter einsetzbar, leicht zu reinigen und einfach in der Herstellung ist und gleichwohl in einfacher Weise eine Rutschsicherung für die transportierten Güter beinhaltet und auch das.Object of the present invention is to provide a plastic pallet that can be used multifunctional for the safe transport of any goods, easy to clean and easy to manufacture and yet in a simple way includes a slip protection for the transported goods and also.

Die Aufgabe wird erfindungsgemäß durch die kennzeichnenden Teile der Ansprüche 1 und 0 gelöst. Zweckmäßige Weiterbildungen sind durch die in den Unteransprüchen enthaltenen Merkmale gekennzeichnet.The object is achieved by the characterizing parts of claims 1 and 0. Advantageous developments are characterized by the features contained in the subclaims.

Erfindungsgemäß wird eine Kunststoffpalette geschaffen, deren Beladefläche durchgehend und einstückig gleithemmend ausgebildet. Dies geschieht vorzugsweise durch eine aufgespritzte gleithemmende Schicht. Die Palettenhauptfläche ist durch die Außenmaße der Palette in Richtung der Breite und Länge definiert, die in der Regel auch die Beladefläche darstellt. Die Beladefläche kann aber auch kleiner sein als die genannte Hauptfläche.According to the invention, a plastic pallet is created whose loading surface is designed to be continuous and integrally slide-resistant. This is preferably done by a sprayed-on anti-slip layer. The main surface of the pallet is defined by the outer dimensions of the pallet in the direction of latitude and longitude, which as a rule also represents the loading surface. The loading area can also be smaller than the said main area.

Diese Antirutschbeschichtung wird zweckmäßigerweise aus einem thermoplastischen Elastomer (TPE) ausgebildet. Das TPE kann eine Materialkombination auf Polypropylenbasis sein. Wenn auch die Basispalette, also die Kunststoffpalette ohne die gleithemmende Schicht, aus Polypropylen gefertigt ist, ergibt sich für das Recyclen der Vorteil der weitgehend sortenreinen Kunststoffkombination. Auch kann die Basispalette aus anderen Kunststoffen, vorzugsweise Thermoplasten, wie bspw. Polyäthylen gefertigt sein.This anti-slip coating is expediently formed from a thermoplastic elastomer (TPE). The TPE may be a polypropylene based material combination. Although the base pallet, ie the plastic pallet without the anti-slip layer, is made of polypropylene, the advantage of the largely sorted plastic combination results for the recycling. Also, the base pallet of other plastics, preferably thermoplastics, such as, for example, be made of polyethylene.

Wenn Waren auf der Beladefläche der Kunststoffpalette, also auf der gleithemmenden Schicht aufgestellt werden, sorgt diese gleithemmende Schicht dafür, dass zwischen der Ware und der Kunststoffpalette ein erhöhter Reibwert besteht. Bei dem Bewegen der Palette, wie es beim Transport mittels Gabelstapler oder Hubwagen oder LKW geschieht, wird ein verrutschsicherer Stand der Waren gewährleistet. Die Haftung entspricht vorzugsweise in etwa den Werten von Holz, insbesondere einer geschnittenen also ansonsten unbehandelten Holzfläche.When goods are placed on the loading surface of the plastic pallet, ie on the anti-slip layer, this anti-slip layer ensures that there is an increased coefficient of friction between the goods and the plastic pallet. When moving the pallet, as happens during transport by forklift or pallet truck or truck, a slip-resistant state of the goods is guaranteed. The adhesion preferably corresponds approximately to the values of wood, in particular a cut so otherwise untreated wood surface.

Die Oberfläche der Palette, insbesondere die Beladefläche, ist vorzugsweise eben ausgeführt.The surface of the pallet, in particular the loading surface, is preferably flat.

Zweckmäßigerweise ist eine Rautiefe Rt von ≤ 3mm vorteilhaft. Insbesondere sind kleinere Rautiefen von 0,5 mm und kleiner denkbar. Bevorzugt wird die Rautiefe zwischen 0,3 und 0,7 mm gewählt, um Verbesserung der Standsicherheit zu bewirken.Conveniently, a roughness R t of ≤ 3mm is advantageous. In particular, smaller roughness depths of 0.5 mm and smaller are conceivable. Preferably, the roughness is selected between 0.3 and 0.7 mm, to improve the stability.

Die Kunststoffpalette kann nicht nur im Bereich der Beladefläche mit der gleithemmenden Schicht sondern auch im Bereich der Abstellfläche zu dem Boden und /oder den Eingriffsflächen der Kontaktfläche von Gabelstaplerzinken u. dgl. Transportmittel vorgesehen sein.The plastic pallet can not only in the area of the loading surface with the anti-sliding layer but also in the area of the storage area to the bottom and / or the engagement surfaces of the contact surface of forklift tines u. Like. Means be provided.

Im Bereich der Beladefläche ist vorzugsweise eine gleichmäßige Schicht der gleithemmenden Schicht von mindestens 0,5 mm vorgesehen, es sind aber auch höhere Schichtdicken von etwa 5 mm möglich. Vorzugsweise liegt die Schichtdicke bei ca. 1 und 3 mm.In the area of the loading surface, a uniform layer of the anti-slip layer of at least 0.5 mm is preferably provided, but higher layer thicknesses of about 5 mm are also possible. Preferably, the layer thickness is about 1 and 3 mm.

Die Kunststoffpalette besteht vorzugsweise aus zwei Materialien und ist in einem Spritzgussverfahren herstellbar. Hierbei wird in einem ersten Schritt eine Basispalette hergestellt. Diese Basispalette weist im wesentlichen die Form der Europalette auf und ist derart formstabil ausgelegt, dass sie die Last der Waren sicher aufnehmen kann.
Vorteilhafterweise wird der gleithemmende Bereich mit demselben Werkzeug mittels eines Mehrkomponentenspritzgussverfahren stoffschlüssig an der Basispalette angeformt. Produktionstechnisch wird in dem Mehrkomponentenspritzgusswerkzeug ein beweglicher Stempel vorgesehen, welcher sich zuerst in einer inneren Stellung befindet, so dass beim Einspritzen des ersten Kunststoffs die Basispalette hergestellt wird. In einem nachfolgenden Schritt wird der bewegliche Stempel um einen definierten Bereich nach außen versetzt, so dass zwischen der Basispalette und dem verschobenen Kern ein Hohlraum entsteht, in welchen der zweite Kunststoff eingespritzt wird. Der zweite Kunststoff ist das Material aus welchem die gleithemmende Schicht gebildet wird. Dabei wird zwischen der Basispalette und der gleithemmenden Schicht eine stoffschlüssige Verbindung erreicht. Dies bedeutet, dass vorzugsweise durch eine Art Anschmelzen eines Bereichs der Basispalette die gleithemmende Schicht untrennbar mit der Basispalette verbunden ist.
Die Größe des verschiebaren Stempels entspricht der gesamten Palettenfläche, insbesondere der Beladefläche. Dies bringt den Vorteil, dass die gesamte Ladefläche mit der gleithemmenden Schicht bedeckt ist, was dafür sorgt, dass beliebige Waren sicher transportiert werden können und die Palette somit universell einsetzbar ist.The plastic pallet is preferably made of two materials and can be produced in an injection molding process. In this case, a basic pallet is produced in a first step. This base pallet has essentially the shape of the Euro pallet and is designed so dimensionally stable that it can safely pick up the load of goods.
Advantageously, the sliding-inhibiting region is integrally formed integrally with the same tool by means of a multi-component injection molding process on the base pallet. In terms of production technology, in the multicomponent injection molding tool, a movable punch is provided, which is initially in an inner position, so that the base pallet is produced when the first plastic is injected. In a subsequent step, the movable punch is displaced outward by a defined area so that a cavity is formed between the base pallet and the displaced core, into which the second plastic is injected. The second plastic is the material from which the slip-resistant layer is formed. In this case, a cohesive connection is achieved between the base pallet and the anti-sliding layer. This means that preferably by a kind of melting of a portion of the base pallet, the slide-inhibiting layer is inseparably connected to the base pallet.
The size of the stampable punch corresponds to the entire pallet area, in particular the loading area. This has the advantage that the entire cargo area is covered with the anti-slip layer, which ensures that any goods can be safely transported and the range is thus universally applicable.

Im Folgenden wird die Erfindung anhand von Zeichnungen beschrieben. Es zeigen:

Fig. 1
eine erfindungsgemäße Kunststoffpalette
Fig. 2
die unterschiedlichen Beladungsmöglichkeiten der Kunststoffpalette
In the following the invention will be described with reference to drawings. Show it:
Fig. 1
a plastic pallet according to the invention
Fig. 2
the different loading possibilities of the plastic pallet

In Fig. 1 ist die Palette beispielshalber als Euro-Palette dargestellt. Diese weist üblicherweise die Maße 1200 x 800 x 144 mm auf und ist im Wesentlichen quaderförmig. Die oben liegende Fläche ist die Palettenhauptfläche. Auf der Palettenhauptfläche, im Folgenden auch Beladefläche 2 genannt, wird die zu transportierenden Ware gestapelt. Im dargestellten Aufführungsbeispiel entspricht die Beladefläche 2 der genannten Palettenhauptfläche. Die Palettenhauptfläche weist an den Kanten einen kleinen Radius auf. Die Kanten in Höhenrichtung der Palette sind jedoch durch einen deutlich größeren Radius gekennzeichnet. Die Beladefläche 2 ist eben und durchgehend flächendeckend mit einer gleithemmenden Schicht beschichtet. Zusätzlich weist die Beladefläche 2 eine Vielzahl von Durchbrüchen auf. Hierdurch wird eine tragende dreidimensionale Struktur gebildet, die eine hohe Tragfähigkeit verbunden mit möglichst geringem Materialeinsatz erzeugt. Die Durchbrüche der Beladefläche 2 sind geöffnet, jedoch ist auch denkbar, dass zumindest teilweise nach unten geschlossene Vertiefungen vorgesehen sind. Die Geometrie der Durchbrüche ist zweckmäßigerweise so bemessen, dass an keinem Bereich der Kunststoffpalette unzulässig große Materialanhäufungen gebildet sind.In Fig. 1, the pallet is exemplified as Euro pallet. This usually has the dimensions 1200 x 800 x 144 mm and is essentially cuboid. The overhead surface is the main pallet surface. On the main pallet surface, also referred to below as loading surface 2, the goods to be transported are stacked. In the illustrated performance example, the loading surface 2 corresponds to the said main surface of the pallet. The main surface of the pallet has a small radius at the edges. However, the edges in the height direction of the pallet are characterized by a much larger radius. The loading surface 2 is flat and continuously coated with a non-slip layer throughout. In addition, the loading surface 2 has a plurality of openings. As a result, a load-bearing three-dimensional structure is formed which generates a high load-bearing capacity combined with the least possible use of material. The apertures of the loading surface 2 are open, but it is also conceivable that at least partially closed recesses are provided. The geometry of the apertures is expediently dimensioned such that impermissibly large accumulations of material are not formed at any area of the plastic pallet.

Wie die Figur 1 zeigt sind die Durchbrüche rechteckförmig und dicht an dicht nebeneinander angeordnet, so dass die Beladefläche 2 an diesen Stellen lediglich durch die schmale stegartige Verbindungen zwischen den Durchbrüchen gebildet wird. Die Breite dieser Stege oder Rippen beträgt 2 bis 6mm, insbesondere ca. 3mm. Vorteilhaft ist die gleithemmende Beschichtung auch etwas über den Kantenbereich der Rippen oder Stege gezogen, so dass der obere Bereich der Rippen- oder Stegwände ebenfalls insbesondere am Kantenbereich beschichtet ist. Im Bereich der Außenkanten sind flächenmäßig kleinere Durchbrüche oder Vertiefungen angeformt. Ferner ist im Bereich der Außenkanten der flächenmäßige Anteil der Vertiefungen geringer, was bedeutet, dass hier mehr Kunststoffmaterial vorgesehen ist, und dass die Palette an den Kanten somit verstärkt ist. Auch diese schmalen Stege sind beschichtet.As shown in FIG. 1, the apertures are rectangular and are arranged close together, so that the loading surface 2 is formed at these points only by the narrow web-like connections between the apertures. The width of these webs or ribs is 2 to 6mm, in particular about 3mm. Advantageously, the anti-sliding coating is also pulled slightly over the edge region of the ribs or webs, so that the upper region of the rib or web walls is likewise coated in particular at the edge region. In the area of the outer edges areal smaller openings or depressions are formed. Furthermore, in the area of the outer edges, the areal proportion of the depressions is smaller, which means that more plastic material is provided here, and that the pallet is thus reinforced at the edges. These narrow bars are coated.

Der Beladefläche 2 gegenüberliegend liegt die Abstellfläche 3, welche bedarfsweise eine gleithemmende Schicht aufweist.The loading surface 2 opposite is the storage area 3, which, if necessary, has a sliding-inhibiting layer.

Zum Bewegen der Palette werden häufig Hubwagen oder Gabelstapler eingesetzt. Diese haben zwei Gabelzinken, welche durch Öffnungen in der Kunststoffpalette in den vier Seiten, die der Beladefläche 2 benachbart sind, greifen, um die Palette anzuheben. Die Kontaktbereiche an denen die Forken eines Gabelstaplers an der Kunststoffpalette 1 angreifen, wird im Folgenden Transportfläche 4 genannt. Diese Transportflächen 4 befinden sich im Bereich der genannten seitlichen Öffnungen der Palette und zeigen nach unten. Auch an den Transportflächen ist vorzugsweise eine gleithemmende Schicht vorgesehen.Pallet trucks or forklifts are often used to move the pallet. These have two forks which engage through openings in the plastic pallet in the four sides adjacent the loading surface 2 to lift the pallet. The contact areas at which attack the forks of a forklift on the plastic pallet 1, hereinafter referred to as transport surface 4. These transport surfaces 4 are located in the region of said lateral openings of the pallet and point downwards. Also on the transport surfaces, a sliding-inhibiting layer is preferably provided.

Fig. 2 zeigt unterschiedliche Arten, in denen die Kunststoffpalette mit Waren beladen werden kann. Fig. 2a, 2b und 2c zeigen, dass unterschiedliche Bierfässer 10,11,12 sicher auf der Palette stehen können. Da die Durchmesser der Fässer im Bereich der Standfläche zwischen Fig.2a und Fig.2b unterschiedlich ist und unter Fig. 2c eine größere Anzahl kleinerer Fässer transportiert wird, liegt der Vorteil einer ebenen Beladefläche 2 darin, dass keine Erhöhungen vorhanden sind, auf den manche der Waren möglicherweise nur teilweise stehen, so wackeln können und leicht verrutschen. Ebenso können, wie in Fig. 2d gezeigt Bierkisten 13 sicher aufgenommen werden. Durch die ebene Beladefläche 2, welche gleithemmend ausgeführt ist, werden so die Vorteile der universellen Verwendbarkeit der Kunststoffpalette 1 mit sicherem Stand der Waren verbunden.Fig. 2 shows different ways in which the plastic pallet can be loaded with goods. Fig. 2a, 2b and 2c show that different beer barrels 10,11,12 can be safely on the pallet. Since the diameter of the barrels in the area of the base between Fig.2a and Fig.2b is different and is transported under Fig. 2c, a larger number of smaller barrels, the advantage of a flat loading surface 2 is that there are no increases to some The goods may only partially stand, so can wobble and slip easily. Likewise, as shown in Fig. 2d, beer crates 13 can be safely picked up. Due to the flat loading surface 2, which is designed to prevent sliding, so the advantages of universal applicability of the plastic pallet 1 with a secure state of the goods are connected.

Claims (10)

Kunststoffpalette (1) für den Transport von Waren oder sonstigem Stückgut mit einer auf der Palettenhauptfläche vorgesehenen Beladefläche (2), welche zumindest teilweise mit einer offenen Struktur mit Durchbrüchen ausgebildet ist, die durch Stege oder Rippen begrenzt ist,
dadurch gekennzeichnet, dass
die Beladefläche (2) durchgehend und einstückig mit einer gleithemmenden Beschichtung ausgebildet ist.Plastic pallet (1) for the transport of goods or other general cargo with a loading surface (2) provided on the main pallet surface, which is at least partially formed with an open structure with apertures bounded by webs or ribs,
characterized in that
the loading surface (2) is formed continuously and integrally with a slide-inhibiting coating. Kunststoffpalette nach Anspruch 1
dadurch gekennzeichnet, dass
die Beladefläche (2) durchgehend flächendeckend mit der gleithemmenden Schicht beschichtet ist.Plastic pallet according to claim 1
characterized in that
the loading surface (2) is continuously coated with the anti-slip layer throughout. Kunststoffpalette nach Anspruch 1 oder 2
dadurch gekennzeichnet, dass
die Rippen oder Stege der Beladefläche, die insbesondere mit einer Breite zwischen 2 und 6mm, vorzugsweise etwa 3mm, ausgebildet sind, durchgehend flächendeckend beschichtet sind.Plastic pallet according to claim 1 or 2
characterized in that
the ribs or webs of the loading surface, which are in particular formed with a width between 2 and 6 mm, preferably about 3 mm, are continuously coated over the entire area. Kunststoffpalette (1) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die gleithemmende Beschichtung durch Spritzguß aufgebracht ist, wobei die gleithemmende Schicht vorzugsweise etwas den oberen Kantenbereich der Rippen oder Stege auch seitlich übergreift.Plastic pallet (1) according to any one of claims 1 to 3, characterized in that the anti-sliding coating is applied by injection molding, wherein the anti-sliding layer preferably also over the upper edge region of the ribs or webs laterally overlaps. Kunststoffpalette (1) nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass die Beladefläche (2) zumindest teilweise eine offene Struktur, mit durch Rippen begrenzten Durchbrüchen aufweist.Plastic pallet (1) according to one of the preceding claims, characterized in that the loading surface (2) at least partially has an open structure, with openings bounded by ribs. Kunststoffpalette (1) nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass
die Beladefläche (2) eben ausgebildet ist, insbesondere durchgehend eben bzw. plan ausgebildet ist.Plastic pallet (1) according to one of the preceding claims, characterized in that
the loading surface (2) is flat, in particular continuously flat or planar. Kunststoffpalette (1) nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass die gleithemmenden Beschichtung eine Dicke von 0,5 mm bis 7 mm, vorzugsweise 1 mm bis 3 mm aufweist.Plastic pallet (1) according to one of the preceding claims, characterized in that the anti-sliding coating has a thickness of 0.5 mm to 7 mm, preferably 1 mm to 3 mm. Kunststoffpalette (1) nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass die gleithemmenden Beschichtung aus einem thermoplastischen Elastomer, insbesondere einer Materialkombination auf Polypropylenbasis gefertigt ist und/oder dass die Kunststoffpalette eine Basispalette umfasst, welche aus Polypropylen oder Polyäthylen gefertigt ist.Plastic pallet (1) according to one of the preceding claims, characterized in that the anti-sliding coating is made of a thermoplastic elastomer, in particular a combination of materials based on polypropylene and / or that the plastic pallet comprises a base pallet, which is made of polypropylene or polyethylene. Verfahren zur Herstellung einer Kunststoffpalette, insbesondere nach einem der Ansprüche 1 bis 0, dadurch gekennzeichnet, dass in einem ersten Spritzgussschritt ein Basismaterial in ein Spritzgusswerkzeug eingespritzt und so eine Basispalette gefertigt wird, und dass in einem nachfolgenden Arbeitsschritt durch Zurückziehen eines Teils des Werkzeug eine Kavität geschaffen wird, in welche das Material für die gleithemmende Beschichtung eingespritzt wird, wobei die Kavität insbesondere einbereichig ist.A method for producing a plastic pallet, in particular according to one of claims 1 to 0, characterized in that injected in a first injection molding step, a base material in an injection mold and so a base pallet is made, and that in a subsequent step by withdrawing a part of the tool, a cavity is created, in which the material is injected for the anti-sliding coating, the cavity is in particular one-sided. Spritzgusswerkzeug zur Herstellung einer Kunststoffpalette (1), insbesondere der Kunststoffpalette nach einem der Ansprüche 1 bis 0, dadurch gekennzeichnet, dass der Bereich des Werkzeug, welcher die Beladefläche der Kunststoffpalette (1) formt, gegenüber dem Spritzgusswerkzeug bewegbar ist.Injection molding tool for producing a plastic pallet (1), in particular the plastic pallet according to one of claims 1 to 0, characterized in that the region of the tool which forms the loading surface of the plastic pallet (1) is movable relative to the injection molding tool.
EP07022139A 2006-11-17 2007-11-14 Plastic pallet with anti-slip coated loading surface Not-in-force EP1923317B1 (en)

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ATE455047T1 (en) 2010-01-15
EP1923317A3 (en) 2008-06-18
PL1923317T3 (en) 2010-06-30
DE102006054358A1 (en) 2008-05-21
DE502007002606D1 (en) 2010-03-04
ES2338473T3 (en) 2010-05-07

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