EP0118362B1 - Kunststoffteile mit Holzarmierungen, insbesondere für Kästen und Paletten - Google Patents

Kunststoffteile mit Holzarmierungen, insbesondere für Kästen und Paletten Download PDF

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Publication number
EP0118362B1
EP0118362B1 EP19840400406 EP84400406A EP0118362B1 EP 0118362 B1 EP0118362 B1 EP 0118362B1 EP 19840400406 EP19840400406 EP 19840400406 EP 84400406 A EP84400406 A EP 84400406A EP 0118362 B1 EP0118362 B1 EP 0118362B1
Authority
EP
European Patent Office
Prior art keywords
frame
crate
item
item according
regions
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.)
Expired
Application number
EP19840400406
Other languages
English (en)
French (fr)
Other versions
EP0118362A1 (de
Inventor
Alain Triadu
Michel Moret
André Hemery
Jean Cornou
Benoît Gourlain
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.)
Allibert Manutention SA
Original Assignee
Allibert SA
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 Allibert SA filed Critical Allibert SA
Publication of EP0118362A1 publication Critical patent/EP0118362A1/de
Application granted granted Critical
Publication of EP0118362B1 publication Critical patent/EP0118362B1/de
Expired legal-status Critical Current

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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
    • B65D11/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of plastics material
    • B65D11/20—Details of walls made of plastics material
    • B65D11/22—Reinforcing for strengthening parts of members
    • 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
    • B65D2519/00064—Wood
    • 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
    • B65D2519/00313—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
    • B65D2519/00547—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
    • B65D2519/00572—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer with separate auxiliary element, e.g. screws, nails, bayonets

Definitions

  • the present invention relates to a plastic part with an internal wooden frame, such as in particular a box or a pallet.
  • FR-A 2 419 223 consists in reinforcing these parts by means of internal frames, in particular of wood. Wood is indeed, if properly treated an excellent reinforcing material, both resistant, flexible and elastic, light and relatively inexpensive. On the other hand, it tends to play, in particular according to the variations of relative humidity to which it can be subjected. The swelling of the wooden frames, if special precautions are not taken, can cause local cracks or breaks in the reinforced plastic molded part.
  • the object of the invention is to solve the difficulties mentioned above.
  • expansion regions are provided for the reinforcement, suitably arranged inside the volume of plastic material coating the reinforcement, these expansion regions being formed by cavities, cutouts, zones filled with compressible material and / or deformation zones present locally between the plastic wall, after molding and cooling, and the reinforcement in place in the part.
  • FIG. 1 there is shown a box of generally substantially rectangular parallelepiped shape having a bottom (not visible in the drawing) and four side faces 2, 3, 4, 5.
  • the box is constructed essentially around a wooden frame or other rigid material embedded and protected in the plastic coating of the body.
  • the reinforced structure thus essentially forms an upper belt, the four sides of which have been identified 6, 7, 8, 9, a lower belt, two visible sides 10, 11 of which have been identified in FIG. 1, four corner posts 12, 13 , 14, 15 and four intermediate uprights 16, 17, 18 and 19.
  • the nine feet of the pallet five of which are identified 20 to 24 in FIG. 1, rest on three rectilinear flanges 25, 26 and 27.
  • the antlers 29, 30 forming the frame of the belt 8, 9 are placed end to end in the angle, but so as to leave a small space e between the end of 29 and the face of 30. Likewise, a space e 'is spared between the end of 30 and the face 28a of the angle 28. This thus avoids, when the wood is swelling, exerting significant direct forces in the rigid angle 28. Similarly, the internal angle identified 31 of the coating does not follow the right angle of junction of the wooden frames 29, 30 again providing an expansion space also allowing deformation without breaking the plastic angle of the body on the frame.
  • an intermediate piece 32 is provided, for example made of polypropylene, part of which will come between the frame 30 of the belt and the frame 34 vertical of the corner upright 14.
  • the part 35 will likewise be placed in the space e ′ to cover the end of the angle end of the frame 30, the part 36 will be interposed between the frame 29 and the reinforcement 30 in space e and part 37 will close the interior space of the angle on which the walls 31, 38 will be applied.
  • the belt frame 29, 30 will preferably be placed in a channel opening 39, 40 formed at the upper part of the body, these channels then being closed by a cover 41 overmolded, possibly formed from a plastic material less prone to stress cracking than the rest of the body; this material advantageously has a high coefficient of friction.
  • FIG. 3 and 4 there is shown the attachment of a wooden sole such as 25 under the feet of the body.
  • the fixing is obtained by means of screws such as 42 which is screwed into reinforcements 43 integral with the bottom 44 of the body, the tightening force of the screw 42 being taken up by a sleeve 45 to be transferred through a wedge expanded foam or other suitable material 46 formed in the foot 22 of the box at the wooden sole 25.
  • This mounting provides more flexibility and allows greater relative expansion between the wood of the sole and the feet of the checkout.
  • FIGS. 3 and 4 there is illustrated the mounting under the box of soles 49 with plastic coating 50 and wooden frame 51.
  • These soles are advantageously constructed according to the same principles as those described above for the body.
  • the mounting differs in this case from that illustrated in FIGS. 3 and 4, in that the fixing by the screws such as 52, can be made substantially at the level of the underside of the body for example by means of a sort of attached cover 53 welded which will close each leg as 22 concerned.
  • a semi-rigid filling material 54 reduces the risk of perforation under the effect of external shocks at the feet of the body.
  • FIG. 7 the wooden frame 29 housed in the channel 40 forming the upper part of the vertical wall of the body and on which the channel has been overmolded the cover. 41.
  • various means can be adopted ensuring the local formation of cavities, cutouts, areas filled with compressible material and / or areas of deformation of the plastic wall as mentioned above.
  • the lower angles of the frame 29 are cut down by forming chamfers which provide cavities 60 which will allow a certain expansion of the wood and a certain deformation of the wall of the channel 40 in these angles.
  • a cutout 61 has been formed in the wood of the frame, which cutout will allow the wood to deform inwards reducing the stresses and avoiding the bursting of the channel 40.
  • two offset horizontal cuts 62, 63 have been made allowing the wood to expand with reduction of the stresses transferred to the coating 40.
  • a cushion is provided under the frame 29, for example made of expanded foam 64 which allows the correct positioning of the frame 29 in the channel 40 during manufacture but allows the expansion of the wood by crushing the cushion in case of swelling of the frame.
  • grooves 65 have been formed in the base of the channel 40 forming an authorized expansion volume for the frame 29 and also allowing a certain deformation of the base of the channel without breaking the coating.
  • the wall of the channel 40 has been widened so as to allow two small volumes 66, 67 of deformation to be formed at its base.
  • FIG. 14 there are two volumes 68, 69 of deformation similar to volumes 66, 67 of FIG. 13, but these volumes have been provided by local reduction in the thickness of the reinforcement.
  • the cover 41 has been deformed so as to comprise a central corrugation 70 (which matches a corresponding deformation of the frame 29). In case of expansion of the frame, the corrugation 70 can be flattened to allow the wood to swell without breaking the coating.
  • the cover 41 has at its upper part a wall 71 thinned relative to its side walls. If the wood swells, this thinned wall may lengthen, reducing the stress at the most fragile angles.
  • FIGS. 8 to 15 can be combined and adapted according to the local conformations of the wall and of the frame.
  • the two woods 29, 30 are interrupted at one distance (D, D ') from the edge of the angle 28 of approximately 15 to 30 mm and this void is filled by a zone 35'-36' of the molded plug 32.
  • This intermediate piece avoids the risks of breakage of the angle, because it can easily be terminated by a rounded zone, and the end of the wooden piece not bearing directly on the rigid angle of the body, its swelling will not exert on it direct forces which can to break up.
  • room 32 rests on vertical frames 34 and on the edge of the wall 38 before being coated by the cover 8-41.
  • the bottom of the box is reinforced by means of rigid frames 72 hermetically protected inside a plastic envelope of a nature similar to that of the box. These armatures protected in their envelopes are placed in recessed U-shaped grooves forming passages 74 formed under the bottom of the body.
  • the plastic envelopes 73 of the frames are welded as shown on one side at 75 towards the base of said grooves. The welding may interest a greater or lesser height of the lateral walls of the grooves but must leave free the upper face 76 of the envelope 73 coming into contact with the bottom 74a of the passages 74.
  • FIG. 17 we see at 77 parts torn off from reported wooden soles.

Landscapes

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

Claims (11)

1. Kunststoffteil mit innerer Holzarmierung, so wie insbesondere ein Kasten oder eine Palette, dadurch gekennzeichnet, dass zur Vermeidung des örtlichen Springens oder Platzens des Teiles unter der Wirkung der Ausdehnungen oder des Quellens der in dem Teil versenkten Armierung (29, 30, 34) Ausdehnungsbereiche für die Armierung vorgesehen sind, die in geeigneter Weise im Innern des Kunststoffraumes angeordnet sind, welcher die Armierung umgibt, und durch Hohlräume (47, 48; 60, 65-69), Ausschnitte (61, 63), mit kompressiblem Material gefüllte Zonen (32, 34) und/oder Deformationszonen (70, 71) gebildet sind, die nach dem Formen und Kühlen zwischen der Kunststoffwand und der Armierung des Teiles angeordnet sind.
2. Teil nach Anspruch 1, dadurch gekennzeichnet, dass die Hohlräume (60, 66-68) durch in den Winkeln oder auf den Rändern oder Kanten der Armierung (29) gebildete Abschrägungen angeordnet sind.
3. Teil nach Anspruch 1, dadurch gekennzeichnet, dass die Ausschnitte (61-63) in den Armierungen (29) gebildet sind und auf einer Kante der Armierung münden.
4. Teil nach Anspruch 1, dadurch gekennzeichnet, dass die Hohlräume durch örtliche Erweiterungen des geformten Kunststoffmaterials gebildet sind, welches in diesen Bereichen (31, 38, 64-65) der Armierung entfernt gehalten ist.
5. Teil nach Anspruch 1, dadurch gekennzeichnet, dass die Deformationszonen durch nicht geradlinige, wellige oder winkelförmige Bereiche (70) der geformten Kunststoffwand gebildet sind.
6. Teil nach Anspruch 1, dadurch gekennzeichnet, dass die Deformationszonen durch verjüngte Bereiche (71) der geformten Kunststoffwand gebildet sind.
7. Teil nach Anspruch 1, dadurch gekennzeichnet, dass die mit kompressiblem Material gefüllten Zonen (32, 64) in der Nachbarschaft einer Kante der Armierung vorgesehen sind.
8. Teil nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass es aus einem Kasten besteht, der an seinem Boden Verstärkungsplatten (25, 26, 27) aufweist, die unter den Füssen (20-24) des Kastens in mit den genannten Ausdehnungsbereichen (47, 48) eingerichteten Bereichen angeschraubt sind.
9. Kasten nach Anspruch 8, dadurch gekennzeichnet, dass die Platten (25-27) aus Holz sind und dass die Verankerungen (43) an dem Kasten mittels in den Füssen vorgesehenen Durchgängen (45) zum Boden des Kastens gebracht sind.
10. Kasten nach Anspruch 8, dadurch gekennzeichnet, dass die Platten (25-27) aus vorzugsweise mit Holz armiertem Kunststoff bestehen und dass die Verankerungen am Kasten an mehreren Stellen (53) unter den Füssen des Kastens gleichmässig verteilt sind.
11. Teil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass unter dem Boden des Kastens Durchgänge (74) angeordnet sind, in denen Verstärkungen (72, 73) eingefügt sind, die an dem Teil des Bodens (74a) des Durchganges (74) nicht geschweisst sind.
EP19840400406 1983-03-04 1984-02-29 Kunststoffteile mit Holzarmierungen, insbesondere für Kästen und Paletten Expired EP0118362B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8303545A FR2541971B1 (fr) 1983-03-04 1983-03-04 Piece en matiere plastique a armature interne en bois en particulier pour caisses et palettes
FR8303545 1983-03-04

Publications (2)

Publication Number Publication Date
EP0118362A1 EP0118362A1 (de) 1984-09-12
EP0118362B1 true EP0118362B1 (de) 1986-10-29

Family

ID=9286489

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840400406 Expired EP0118362B1 (de) 1983-03-04 1984-02-29 Kunststoffteile mit Holzarmierungen, insbesondere für Kästen und Paletten

Country Status (4)

Country Link
EP (1) EP0118362B1 (de)
DE (1) DE3461063D1 (de)
ES (1) ES286130Y (de)
FR (1) FR2541971B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9317837U1 (de) * 1993-11-22 1994-01-27 Oeco-Team Unternehmens- und Umweltberatung GmbH, 82031 Grünwald Palettenumhüllung, vorzugsweise für Holzpaletten
US6955128B2 (en) 2001-10-19 2005-10-18 Rehrig Pacific Company Reinforced pallet

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2146916A1 (de) * 1971-09-20 1973-03-22 Fritzmeier Kg Georg Verfahren zur herstellung verstaerkter tiefziehteile
FR2375976A2 (fr) * 1976-12-29 1978-07-28 Transformat Mat Plastiques Procede et moyens de rigidification des parois d'un reservoir en matiere plastique obtenu par extrusion-soufflage
FR2419223A1 (fr) * 1978-03-09 1979-10-05 Allibert Exploitation Caisse de manutention et de stockage
FR2483887A1 (fr) * 1980-06-05 1981-12-11 Utz Ag Georg Recipient en matiere plastique superposable
FR2513176A1 (fr) * 1981-09-18 1983-03-25 Allibert Sa Procede permettant d'enrober hermetiquement les armatures d'une piece en matiere plastique armee interieurement et pieces obtenues selon ce procede

Also Published As

Publication number Publication date
ES286130Y (es) 1986-06-01
DE3461063D1 (en) 1986-12-04
FR2541971B1 (fr) 1986-04-18
ES286130U (es) 1985-11-01
FR2541971A1 (fr) 1984-09-07
EP0118362A1 (de) 1984-09-12

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