EP0649794A1 - Nouvelle palette en plastique et son procédé de fabrication - Google Patents

Nouvelle palette en plastique et son procédé de fabrication Download PDF

Info

Publication number
EP0649794A1
EP0649794A1 EP94402414A EP94402414A EP0649794A1 EP 0649794 A1 EP0649794 A1 EP 0649794A1 EP 94402414 A EP94402414 A EP 94402414A EP 94402414 A EP94402414 A EP 94402414A EP 0649794 A1 EP0649794 A1 EP 0649794A1
Authority
EP
European Patent Office
Prior art keywords
pallet
studs
pallet according
ribs
plate
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.)
Withdrawn
Application number
EP94402414A
Other languages
German (de)
English (en)
French (fr)
Inventor
Francis Cordebar
Michel Poisat
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.)
Plastic Omnium SE
Original Assignee
Plastic Omnium SE
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
Priority claimed from FR9312738A external-priority patent/FR2711618B1/fr
Priority claimed from FR9400423A external-priority patent/FR2715127B1/fr
Application filed by Plastic Omnium SE filed Critical Plastic Omnium SE
Publication of EP0649794A1 publication Critical patent/EP0649794A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • 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
    • B65D19/002—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 more than one element
    • B65D19/0024—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 more than one element forming discontinuous or non-planar contact surfaces
    • B65D19/0026—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 more than one element forming discontinuous or non-planar contact surfaces and each contact surface having a stringer-like shape
    • 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
    • B65D2519/00273—Overall construction of the pallet made of more than 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
    • B65D2519/00323—Overall construction of the base surface made of more than 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
    • B65D2519/00333—Overall construction of the base surface shape of the contact surface of the base contact surface having a stringer-like shape
    • 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
    • B65D2519/00398—Overall construction reinforcements
    • B65D2519/00402—Integral, e.g. ribs
    • B65D2519/00407—Integral, e.g. ribs on the load supporting 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
    • 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
    • B65D2519/00398—Overall construction reinforcements
    • B65D2519/00402—Integral, e.g. ribs
    • B65D2519/00412—Integral, e.g. ribs on the base 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
    • 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
    • B65D2519/00398—Overall construction reinforcements
    • B65D2519/00432—Non-integral, e.g. inserts
    • 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
    • B65D2519/00398—Overall construction reinforcements
    • B65D2519/00432—Non-integral, e.g. inserts
    • B65D2519/00442—Non-integral, e.g. inserts on the base 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
    • 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
    • B65D2519/00547—Connections
    • B65D2519/00552—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer
    • B65D2519/00557—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer without separate auxiliary elements
    • 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
    • B65D2519/00547—Connections
    • B65D2519/00552—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer
    • B65D2519/00557—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer without separate auxiliary elements
    • B65D2519/00562—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer without separate auxiliary elements chemical connection, e.g. glued, welded, sealed

Definitions

  • the present invention relates to a new plastic pallet and its manufacturing process.
  • pallets are kinds of trays intended to support various goods in particular for their transport and storage.
  • These trays are provided with feet or studs, generally nine in number, leaving between them spaces intended to receive the forks of a forklift or a pallet truck in order to allow movement from one place to another of the pallet and the goods it supports.
  • the most commonly used pallets are wooden pallets which have the advantage of a low cost price, but which have the disadvantage of having a limited lifespan, a high weight and soiling quickly so that they are difficult to use in certain industries such as the food or pharmaceutical industries.
  • Plastic pallets are also known which have the double disadvantage of being of a much higher price than that of wooden pallets, and of not being able to meet the standards in force, that is to say that they do not have mechanical strength sufficient, either that their plate or their studs do not meet the requirements of these standards.
  • the subject of the present invention is a plastic pallet, characterized in that it comprises, in combination, an upper element or a median element provided with a network of ribs of stiffening and a plurality of studs constituted by a set of vertical walls, and hollow beams produced by extrusion which are secured for example by welding or gluing to the lower part of a series of aligned studs.
  • the pallet according to the invention comprises an upper element which has the particularity of being constituted by a substantially flat plate which is extended perpendicularly downwards by a plurality of stiffening ribs connected laterally to each other as well as by partitions also laterally connected to each other to form studs.
  • This upper element can be easily produced by a conventional injection molding process which consists in sending a thermoplastic material in the pasty state under high pressure into a mold of corresponding shape.
  • This upper element can also be produced by an injection-compression process which consists in injecting the thermoplastic material under a relatively low pressure into a half-opened mold, then in closing the mold, which has the effect of strongly compressing the plastic material to inside the mold and give it the shape it should have.
  • the upper element of the pallet can also be produced by a similar process called extrusion-compression, according to which the elements of the mold are separated from one another, the thermoplastic material extruded is deposited in the part bottom of the mold, then the mold is closed by applying its upper part to its lower part so as to compress the plastic.
  • the side members are advantageously obtained by continuous extrusion of a hollow plastic profile which preferably comprises at least one vertical rib which contributes to its stiffening.
  • the beams that are used for the realization of the pallet are sections cut to the desired length in the extruded profiles in question.
  • the side members comprise at least one vertical partition which makes them more rigid.
  • a reinforcing element such as for example a tube, a metal profile or a bar of wood.
  • the welding or bonding of the beams under the studs of the upper or middle element of the pallet according to the invention is easily carried out while having excellent mechanical characteristics.
  • the welding of the side members on the lower surface of the studs can advantageously be carried out according to the invention by vibration welding.
  • This method can be easily implemented for fixing the side members because the welding can be carried out by slight relative displacements between the lower edge of the partitions constituting the studs, and the upper smooth surface of the side members.
  • the realization of the pallet according to the invention makes it possible to obtain an upper plate which can have at will a continuous surface or a surface in which one has practiced orifices whose surface and number depend on the use that one wishes to make of the pallet.
  • the lower surface of the pallet which is formed by the lower faces of the side members, also has flat surfaces of widths which are large enough to be able to meet standards and which allow stacking of pallets loaded with fragile products such as for example liquids contained in plastic bottles.
  • reinforcing elements are kept inside the cavities, for example using plastic end covers which are glued, welded or clipped to the end of the side members, which has the advantage of both immobilizing the reinforcing elements inside the side members and to prevent dirt from entering the inside of the side members.
  • the side members are closed at their ends by an element, for example of molded plastic, which has a cut upper angle in order to facilitate the introduction of the forks of the handling machine.
  • the pallets according to the invention can be produced with a very wide range of thermoplastic material, the strength of which can possibly be reinforced by fibers such as glass fibers.
  • the upper and / or middle elements and the side members of the pallet can be made of high density polyethylene.
  • the partitions and the ribs are connected to the underside of the plate by rounding in order to avoid too great a concentration of the stresses in the material.
  • the pallet is constituted by the assembly of three types of elements, namely a median element which has on its underside studs for example such as those which have been described in the first embodiment , longitudinal members obtained by extrusion which are fixed to the studs and whose structure has been described in the first embodiment and an upper element which has at its top a flat surface to constitute the upper face of the pallet plate and which is joined has the middle element through vertical ribs.
  • a median element which has on its underside studs for example such as those which have been described in the first embodiment
  • longitudinal members obtained by extrusion which are fixed to the studs and whose structure has been described in the first embodiment
  • an upper element which has at its top a flat surface to constitute the upper face of the pallet plate and which is joined has the middle element through vertical ribs.
  • the middle element is advantageously obtained by injection, injection-compression or extrusion-compression, as has been described above for obtaining the upper element of the first embodiment.
  • the median element comprises a plate constituting the lower face of the pallet plate which extends to its lower face by the vertical partitions constituting the studs and which extends to its upper face by vertical stiffening ribs
  • the upper element is constituted by a plate constituting the upper face of the pallet plate, a plate which is provided on its lower face with vertical stiffening ribs whose configuration is the same as that of the stiffening ribs of the middle element, so that the upper element can be joined to the middle element by welding together the ends of the stiffening ribs, for example by the so-called mirror welding process.
  • the plate of the median element may lie entirely in the plane of the underside of the pallet plate while the partitions forming the studs extend downward and are welded to the crosspieces by their ends as described in the first embodiment.
  • the plate of the median element can also be located in the plane of the underside of the plate only outside the studs while this plate is offset at the base of the studs in line with the latter, the reinforcing partitions studs then extending upwards until they connect with the upper element.
  • the upper element can advantageously be produced by injection, injection-compression or extrusion-compression.
  • the upper ribs of the median element have a height which corresponds substantially to the thickness of the plate of the pallet, while the upper element essentially serves to constitute the upper face of the plate of the palette.
  • the median element can be produced by injection, injection-compression, or extrusion-compression.
  • the median element consists of a plate which supports the studs on its lower face, which may have no ribs on its upper face.
  • the upper element itself is constituted by a plate which constitutes the upper face of the plate and by stiffening ribs which are integral with the lower face of the plate and whose lower end is welded to the upper face. of the middle element, for example by the so-called mirror welding process or by vibration welding.
  • This upper element can also be produced in the form of an extruded rectangular profile with preferably vertical partitions.
  • Pallets according to the three variants of this second embodiment have the advantage of having smooth external surfaces and without recesses, which is important for keeping the pallets in a perfect state of cleanliness.
  • This advantage can also be obtained in the first embodiment using a plate, provided with orifices whose position and shape correspond to those of the studs, which are welded to the lower end of the ribs of stiffening of the upper element.
  • the peripheral partitions of the pads can have on at least part of their periphery a section in the form of Greek or corrugations so as to increase their resistance to crushing.
  • the pallets according to the invention finally have the advantage of allowing easy differentiation of the different models, of their users or of their owners by using upper and / or median elements combined with spars of different colors, which allows the very wide variety of identifications desired in logistics.
  • Pallets and in particular standard pallets, most often have a generally rectangular shape.
  • the side rails parallel to the long sides of the pallet, so as to benefit in this direction from the rigidity which is imparted by the side rails with possibly the reinforcing elements which they contain.
  • the mechanical strength required in the width direction can thus be more easily provided by the ribs of the middle or upper elements constituting the plate.
  • the rigidity in the direction of the short sides of the pallet can also be increased thanks to reinforcing elements placed between the ribs in the thickness of the plate.
  • the upper and / or middle elements of the pallet according to the invention can be produced either by a traditional injection process or by a gas-assisted injection process which allows a better distribution of the plastic material in the mold and the use of a lower power press. This process makes it possible to increase the rigidity of the pallet by increasing the moments of inertia for the same quantity of termoplastic material.
  • FIG. 1 the upper element 1 of the pallet which is constituted by a plate 2, substantially planar, provided at its lower part with nine studs among which the peripheral studs 4, 5, 6, 7 have simply been shown and 8.
  • longitudinal members 10 and 11 join the lower parts of the pads which are in alignment with the pads 4 and 5.
  • FIG. 1 Partially shown in FIG. 1 is how the plate 2 can be provided with orifices 3, the dimensions of which can be chosen as a function of the nature of the products which are intended to be placed on the pallet.
  • FIG. 2 is a top view of the lower quarter of the pallet in FIG. 1.
  • the pads 5, 6 and 7 are constituted by peripheral partitions 12, and central partitions 13, which are joined laterally to one another and which, at their upper part, are integral with the plate 2.
  • the central partitions 13 could also be positioned according to radial directions, for example along diagonals.
  • peripheral partitions 12 may have, for example on their faces facing outwards from the palette, Greek-shaped or wavy sections to increase their resistance to crushing.
  • a rib 16 which goes around the plate 2 has also been shown in broken lines.
  • the ribs 14, 15 and 16 are integral with the underside of the plate 2, of which they provide rigidity and mechanical solidity.
  • the studs have cut sides 17 to facilitate the introduction between them of the forks of the forklift.
  • cut sides 17 which are made on the periphery of the studs to allow easier engagement of the forks of the forklift.
  • FIG. 3 represents a section along III-III of FIG. 2, on which we find the plate 2, the orifices 3, as well as the transverse ribs 14 and the peripheral rib 16.
  • peripheral rib 16 and the last transverse rib 14a have a height less than the other transverse ribs 14 so as to facilitate engagement Forks of a forklift in the free spaces between the studs.
  • Figure 4 is a section along IV-IV of Figure 2 which corresponds to Figure 3, except that there is shown in addition the longitudinal rib 15 and that the section was made outside the orifices 3.
  • FIG. 5 which is a section along V-V in FIG. 2, we find the peripheral partitions 12 as well as the central partitions 13 of the studs 5 and 6. We also find in this figure a longitudinal rib 15 as well as the transverse ribs 14.
  • FIG. 6 is a perspective view of the lower part of the stud 6 which rests on its spar 9.
  • the spar 9 is constituted by a generally trapezoidal profile, comprising a lower face 18 intended to rest on the ground or on the products supported by another pallet and an upper face 19 intended to be connected with the lower part of the partitions 12, 13 and 17 which constitute the stud 6.
  • the spar 9 has a generally trapezoidal shape which corresponds to the shape of the lower part of the partitions 12, 13 and 17 which constitute the stud 6, so as to ensure proper positioning of the stud on the spar.
  • the reinforcing element can be, if desired, immobilized in the beam, for example by a slight deformation or withdrawal of the plastic material or by the fact that the reinforcing element is supported on ribs or extra thicknesses present on the inner surface of the spar.
  • the upper element of the pallet can be produced for example by injection, by injection-compression or extrusion-compression.
  • the number and dimensions of the ribs which are located on the underside of the upper element are chosen according to the mechanical strength which it is desired to impart to the pallet.
  • the beams can be easily obtained by extrusion to then be cut to the desired length.
  • the assembly of the beams on the studs can easily be carried out by a vibration welding process, which consists in applying the studs on the beam by vibrating one part with respect to the other so as to cause heating and melting partial of the two parts, which ensures their welding.
  • FIG. 6 shows how it is possible to close the recesses of the beam with the aid of a plate 25, for example made of plastic, which can be easily glued, clipped or welded, for example to the mirror, at each end of the beams in order to maintain the frame 24 in the beam and to prevent dirt from entering inside the latter.
  • a plate 25 for example made of plastic, which can be easily glued, clipped or welded, for example to the mirror, at each end of the beams in order to maintain the frame 24 in the beam and to prevent dirt from entering inside the latter.
  • FIG 8 a first variant of the second embodiment of the invention which comprises a median element provided with a plate 26 which has on its underside the partitions 12 and 13 which constitute a stud.
  • the ends of the partitions 12 and 13 are welded at 30, for example by vibration, to a beam 9 which is produced by extrusion.
  • this spar 9 comprises a metal reinforcing tube 24 between two vertical partitions 21 and 22.
  • the plate 26 of the median element has on its upper part a series of vertical stiffening ribs of which only the peripheral rib 27 has been shown, the other ribs being hidden by the reinforcing tube 28 which is located between two ribs at the upper part of the median element, being covered by the upper element 29 which is welded at 30 by the end of its ribs to the ends of the ribs disposed at the upper part of the plate 26 of the median element, as shown in 30.
  • the reinforcing members which are arranged between the middle and upper elements are advantageously arranged perpendicular to the direction of the side members 9 so as to stiffen the pallet in both directions.
  • FIG. 9 represents a variant of FIG. 8 in which the plate 26 of the median element is offset downwards at the lower end of the studs to form a bearing surface 31 which comes to bear on the upper part of the side member 9.
  • the spar 9 is here reinforced by a wooden frame 24 a .
  • the upper element 29 is constituted by a section of rectangular section which is provided with partitions 32 and which can be easily obtained by extrusion.
  • This profile 29 can be easily welded at 30 to the end of the upper ribs, for example using a vibration welding process.
  • Figure 10 a variant of Figure 8 in which the plate 26 has vertical ribs which extend to the upper surface of the pallet which is constituted by a simple plastic plate 33 which is fixed by weld in 30 at the upper end 30 of the vertical ribs of the median element.
  • This welding can advantageously be carried out by the vibration welding process.
  • FIG. 11 represents another variant in which the plate 26 of the median element has no rib at its upper part, while the upper element 29 is provided with ribs 32 whose ends are welded at 30 on the face upper plate 26 of the middle element, this welding can advantageously be carried out by vibration.
  • reinforcing members can also be placed between the ribs before the median element and the superior element meet.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pallets (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
EP94402414A 1993-10-26 1994-10-26 Nouvelle palette en plastique et son procédé de fabrication Withdrawn EP0649794A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR9312738 1993-10-26
FR9312738A FR2711618B1 (fr) 1993-10-26 1993-10-26 Palette en matière plastique et son procédé de fabrication.
FR9400423A FR2715127B1 (fr) 1994-01-17 1994-01-17 Nouvelle palette en plastique et son procédé de fabrication.
FR9400423 1994-01-17

Publications (1)

Publication Number Publication Date
EP0649794A1 true EP0649794A1 (fr) 1995-04-26

Family

ID=26230699

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94402414A Withdrawn EP0649794A1 (fr) 1993-10-26 1994-10-26 Nouvelle palette en plastique et son procédé de fabrication

Country Status (7)

Country Link
EP (1) EP0649794A1 (no)
JP (1) JPH07165239A (no)
KR (1) KR100382769B1 (no)
CA (1) CA2134280A1 (no)
FI (1) FI945015A (no)
NO (1) NO944057L (no)
TW (1) TW254905B (no)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0755865A1 (fr) * 1995-07-27 1997-01-29 Compagnie Plastic Omnium Palette à plots renforcés en matière plastique
WO1999035041A1 (en) * 1998-01-07 1999-07-15 Mamor S.P.A. Plastics material modular pallet
CH691256A5 (de) * 1996-06-18 2001-06-15 Utz Georg Holding Ag Kunststoffpalette und Verfahren zu deren Herstellung.

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100518160B1 (ko) * 1996-11-05 2006-09-18 닛폰 프라파렛트 가부시키가이샤 합성수지팔레트
KR100504183B1 (ko) * 2002-11-26 2005-07-28 내쇼날푸라스틱주식회사 측면에 카드꽂이구를 형성시킨 패리트
KR100727822B1 (ko) * 2003-01-29 2007-06-14 주식회사 덕유 일체형 핸드카 타입 팔레트 제조용 금형장치

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2110348A1 (no) * 1970-10-10 1972-06-02 Schoeller & Co Kg
FR2387850A1 (fr) * 1977-04-22 1978-11-17 Stamp Transform Matieres Plast Perfectionnements aux palettes de manutention
EP0226505A1 (fr) * 1985-12-04 1987-06-24 Allibert Sa. Palette de chargement renforcée et procédé de renforcement d'une telle palette
WO1991013001A1 (en) * 1990-02-26 1991-09-05 Shuert Lyle H Rackable plastic pallet
DE9214380U1 (de) * 1992-10-23 1992-12-10 Oeco-Team Unternehmens- und Umweltberatung GmbH, 8022 Grünwald Transport- und Lagersystem

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2110348A1 (no) * 1970-10-10 1972-06-02 Schoeller & Co Kg
FR2387850A1 (fr) * 1977-04-22 1978-11-17 Stamp Transform Matieres Plast Perfectionnements aux palettes de manutention
EP0226505A1 (fr) * 1985-12-04 1987-06-24 Allibert Sa. Palette de chargement renforcée et procédé de renforcement d'une telle palette
WO1991013001A1 (en) * 1990-02-26 1991-09-05 Shuert Lyle H Rackable plastic pallet
DE9214380U1 (de) * 1992-10-23 1992-12-10 Oeco-Team Unternehmens- und Umweltberatung GmbH, 8022 Grünwald Transport- und Lagersystem

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0755865A1 (fr) * 1995-07-27 1997-01-29 Compagnie Plastic Omnium Palette à plots renforcés en matière plastique
FR2737187A1 (fr) * 1995-07-27 1997-01-31 Plastic Omnium Cie Palette a plots renforces en matiere plastique
CH691256A5 (de) * 1996-06-18 2001-06-15 Utz Georg Holding Ag Kunststoffpalette und Verfahren zu deren Herstellung.
WO1999035041A1 (en) * 1998-01-07 1999-07-15 Mamor S.P.A. Plastics material modular pallet

Also Published As

Publication number Publication date
KR950011281A (ko) 1995-05-15
TW254905B (no) 1995-08-21
FI945015A0 (fi) 1994-10-25
KR100382769B1 (ko) 2005-11-08
JPH07165239A (ja) 1995-06-27
NO944057L (no) 1995-04-27
NO944057D0 (no) 1994-10-25
FI945015A (fi) 1995-04-27
CA2134280A1 (fr) 1995-04-27

Similar Documents

Publication Publication Date Title
EP0226505B1 (fr) Palette de chargement renforcée et procédé de renforcement d'une telle palette
EP0696989B1 (fr) Palette de manutention en matiere plastique et procede de fabrication
US20050103236A1 (en) Pallet assembly
FR2697501A1 (fr) Palette.
FR2759063A1 (fr) Palette de manutention
FR2876678A1 (fr) Dispositif modulaire de support de barriques.
EP0649794A1 (fr) Nouvelle palette en plastique et son procédé de fabrication
EP2427385A2 (fr) Palette modulaire démontable
EP1207115A1 (fr) Palette de transport
FR2715127A1 (fr) Nouvelle palette en plastique et son procédé de fabrication.
BE1025803B1 (fr) Box combi de transport et stockage des marchandises
FR2727671A1 (fr) Boite articulee de transport de pieces detachees
EP1633641A1 (fr) Caisse metallique repliable.
FR2711618A1 (fr) Palette en matière plastique et son procédé de fabrication.
FR2604978A1 (fr) Claie de manutention a elements demontables en matiere plastique moulables par injection
FR2765193A1 (fr) Pied support en carton,notamment pour palettes de manutention
FR2747645A1 (fr) Palette en une matiere synthetique
FR2661656A1 (fr) Palette-caisse.
WO2002034631A2 (fr) Palette en matiere plastique et son procede de fabrication
EP0202363A1 (fr) Emballage à palette intégrée
FR2913957A1 (fr) Bac pliable
EP2357140B1 (fr) Caisse et bac pliable résistants à la compression
EP1136374B1 (fr) Palette à usage multiple
FR2755949A1 (fr) Palette de manutention en matiere plastique
AU2004201302B2 (en) Pallet assembly

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

17P Request for examination filed

Effective date: 19950929

17Q First examination report despatched

Effective date: 19961011

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19980421