(19)
(11) EP 1 384 678 B1

(12) EUROPEAN PATENT SPECIFICATION

(45) Mention of the grant of the patent:
29.04.2009 Bulletin 2009/18

(21) Application number: 03016167.3

(22) Date of filing: 16.07.2003
(51) International Patent Classification (IPC): 
B65D 71/00(2006.01)

(54)

Pallet-like carrier body for stacked insulating boards

Palettengleicher Tragkörper für Dämmstoffplatten

Corps de support sous forme de palette pour panneaux d'isolation


(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
Designated Extension States:
LT

(30) Priority: 26.07.2002 DE 10234189

(43) Date of publication of application:
28.01.2004 Bulletin 2004/05

(73) Proprietor: SAINT-GOBAIN ISOVER
92400 Courbevoie (FR)

(72) Inventor:
  • Schlögl, Joachim
    16548 Glienicke-Nordbahn (DE)

(74) Representative: Bockhorni & Kollegen 
Elsenheimerstrasse 49
80687 München
80687 München (DE)


(56) References cited: : 
EP-A- 0 664 257
DE-A- 3 810 089
FR-A- 1 301 363
US-A- 3 942 654
EP-A- 1 338 526
DE-U- 9 218 320
JP-A- 11 189 242
   
       
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description


    [0001] The invention concerns a stack of insulating boards, in particular a carrier body for picking up boards of insulating material arranged in stacks, where the insulating boards are placed on top of each other.

    [0002] Given the associated logistic advantages, insulating materials (boards or rolls of felt) are nowadays delivered to dealers or direct to building sites for the most part on pallets. This renders possible rapid transfer processes on the occasion of storage and processing, and also considerable savings of labor time as compared with delivery in individual packages.

    [0003] As a general rule, wooden pallets are employed as the means of transport for such insulating materials as glass and mineral wool. But the elimination of disposable pallets and the return of reusable pallets is associated with considerable costs.

    [0004] When the materials in question are large-size insulating boards for flat roofs, the use of strips of insulating material under the boards to be transported has proved particularly advantageous in recent years, because these strips can either be disposed of at a small cost or, when they are in a proper condition, can be incorporated in the insulating layer to be created in the building project (DE 92 18 320 U). This eliminates the disposal and transport costs associated with wooden pallets and the user may even enjoy a cost advantage. The drawback associated with this procedure is that it can only be used for transporting large-size boards.

    [0005] One is therefore induced to look for a solution that will eliminate the use of carrier elements made of materials other than the elements that have to be transported and will make possible the at least partial use of the carrier element as insulating material in building construction.

    [0006] It is therefore suggested that use should be made of a carrier element of insulating material such that, given an element in normal conditions, at least parts of it can employed as insulating board in building works.

    [0007] Given pressure-resisting insulating boards of largish thickness (for example, insulating boards for flat roofs from 100 mm upwards), this carrier element can be made in accordance with the invention from a full-size insulating board on the underside of which there are formed two rectangular recesses extending over the entire width of the board and choosing the dimensions and spacing of the recesses in such a manner as to render them suitable for accommodating the appropriate pick-up devices of lifting equipment (forklift trucks, for example).

    [0008] In this way one forms a carrier element that can discharge the task of a wooden pallet and of which the full-thickness parts between the recesses can be used as insulating board after appropriate cutting to size.

    [0009] This solution is preferably not based on the idea of creating hollows between the ground and the stack of boards by placing strips of insulating material under the stack, thus rendering transport possible by enabling lifting equipment to grip under the stack, but rather creating these hollows by appropriately shaping the bottom board of the stack.

    [0010] The advantage is that small-size insulating boards can also be transported on such a carrier body.

    [0011] A further possibility for transporting insulating boards which does not form part of the present invention is the use of pallet-like structures made of insulating material and consisting of several parts; i.e. strips or blocks of insulating material are attached to the underside of individual insulating boards in such a manner as to create an independent structure as carrier body. The space thus created between the ground and the insulating board makes it possible for lifting equipment to pick up the carrier body from underneath. Insulating boards can then be stored and transported on this carrier body. It is important that an independent carrier body consisting of a cover board and foot elements, which may have different shapes (strip-like, cubic, cylindrical), should be formed before any insulating boards are stacked thereon.

    [0012] It is particularly advantageous when the cover plate of the carrier body is exactly the same as the boards to be transported. In that case it can subsequently be used as insulating board.

    [0013] Use possibilities can be envisaged, for example, in connection with partition wall boards, i.e. large-size boards that do not necessarily have to be capable of resisting compression.

    Advantages of the solution in accordance with the invention



    [0014] 
    1. a) Insulating boards can be transported without wooden pallets on carrier elements that can be used as insulating material.
    2. b) Even small-size boards can be transported.
    3. c) No costs have to be sustained for disposal or return.


    [0015] A preferred embodiment of the invention will now be described with the help of the drawings, of which:
    Figure 1
    shows a perspective vie of a pallet-like carrier body in accordance with the invention
    Figure 2
    shows a pallet-like carrier body which does not form part of the invention.


    [0016] The carrier body, which in Figure 1 is generally indicated by the reference number 1, is made up of a plane, floor-like carrying surface 2 and carrier elements 3 arranged on the underside of the carrying surface 2 that project downwards from the carrying surface 2 and constitute supporting feet of the carrier body 1. The carrier body 1 in accordance with Figure 1, of which the carrying surface 2 is continuous, comprises three carrier elements 3, of which two carrier elements are arranged at the opposite shorter sides of the carrying surface 2 and preferably terminate flush with it. The further carrier element 3 is arranged at the center. All three carrier elements are aligned parallel with each other and extend advantageously over the entire width of the carrying surface 2. The carrier elements can be seen to be shaped in the manner of strips, though this is not to be understood as limitative in any way. The arrangement and / or the shape of the carrier elements is in any case such that between adjacent carrier elements 3 there are delimited pick-up recesses or insertion slots 4 that serve for the insertion of the prongs of forklift trucks or other pick-up devices of lifting equipment. In the illustrated embodiment the insertion slots 4 are formed from the carrier body 1 by means of milling, the insertion slots 4 having the shape of grooves.

    [0017] The illustrative solution in accordance with Figure 2, on the other hand, is provided with insular carrier elements 5 that are arranged on the underside of the carrying surface 2 in such a manner as to terminate either flush with the adjacent edge faces of the carrying surface 2 or, as shown in Figure 2, are arranged at a certain distance inwards of the adjacent edge faces of the carrying surface 2. These carrier elements once again constitute supporting feet of the carrier body 1 and are constituted by blocks having a square cross section, but such carrier elements may also be constituted by supporting feet having a rectangular or cylindrical cross section or, indeed, any other suitable cross section. These carrier elements 5 are once again arranged at a lateral distance from each other in such a manner as to constitute appropriate recesses or insertion slots for the lifting equipment or the prongs of a forklift truck. Two rows of carrier elements 5 are provided, and each row consists of three carrier elements 5. The rows are in each case arranged adjacent to, but at a small distance from the appropriate edge of the carrying surface 2. The insular carrier elements 5 may also be shaped in the manner of strips similar to the carrier elements shown in Figure 1, and they will advantageously have a width smaller than the width of the carrying surface 2 and, consequently, be arranged at a distance from the adjacent edge sides of the carrying surface 2 so as to be displaced inwards.

    [0018] The one-piece carrier body 1, in accordance with the present invention including the carrier elements 3, is made of insulating material and, more particularly, of pressure-resisting insulating material. Mineral wool as defined in claim 1 is particularly suitable for this purpose whereby the carrier body 1, which serves as support for the stacked insulating boards, is made of the same material as the insulating boards it is to sustain. The carrier body 1 is a direct component of the lowermost insulating board in the stack, in which case the insertion slots for the lifting equipment or the forklift truck can be produced by means of milling. This can be done during the phase in which the insulating board is produced or given its form, and especially downstream of the hardening furnace. This operation can be performed as part of an on-line process if, for example, every ninth board is simply separated from the other boards in the production line in order to carry out the milling passage during and in step with the line speed. In that case the milled board will merely have to be turned through 180° in order to have the insertion grooves on the underside of the board.

    [0019] But the lowermost boards can be given their form also in any other way, for example, by means of pressing in appropriate moulds.

    [0020] The carrier body according to the present invention is produced as a single piece respectively one-piece part and, more particularly, constitutes the lowermost board of the stack whereby the stack of insulating boards supported on the carrying surface 2 can be picked up and transported by appropriate lifting equipment, especially forklift trucks. The carrier body thus constitutes a pallet-like component that serves for the transport of stacked insulating boards. Of course, the carrier body with the insulating boards supported thereon is enveloped by a foil or several foil strips in the customary manner as defined in claim 1.


    Claims

    1. A stack of insulating boards made of mineral wool which are placed on top of each other and enveloped by a foil or several foil strips, wherein this stack is supported on its underside by carrier elements (3) made of mineral wool which are arranged at such a distance from each other as to delimit pick-up recesses between them for the insertion of the prongs of forklift trucks or the insertion of some other lifting means,
    characterized in that

    - the stack is provided with a carrier body (1) made as a one-piece element which is constituted by the lowermost insulating board of the stack,

    - the carrier body (1) is made up of a plane, floor-like and continuous carrying surface (2) and of carrier elements (3) which are arranged on the underside thereof, project downwards from the carrying surface (2), form supporting feet of the carrier body and delimit the pick-up recesses (4) between them in the shape of grooves

    - the carrier body (1) including the carrier elements (3) is made of the same material as the insulating boards of the stack

    - the formation of the carrying surface (2) corresponds to the length and width of the insulating boards of the stack.


     
    2. A stack in accordance with Claim 1 characterized in that the pick-up recesses (4) extend over the entire width of the insulating board.
     
    3. A stack in accordance with any one of the preceding claims, characterized in that the pick-up recesses (4) are formed by means of milling or cutting the insulating board or by pressing the insulating board.
     
    4. A stack in accordance with Claim 1, characterized in that the carrier elements (3) are strip-like elements.
     
    5. A stack according any one of the preceding claims, characterized in that carrier elements (3) terminate flush with the carrying surface at least at two opposite sides of the carrying surface (2).
     


    Ansprüche

    1. Stapel aus Dämmstoffplatten aus Mineralwolle, welche aufeinandergelegt und durch eine Folie oder mehrere Folienstreifen umhüllt sind, wobei der Stapel an seiner Unterseite durch Tragelemente (3) aus Mineralwolle abgestützt ist, welche in einem derartigen Abstand zu einander angeordnet sind, so dass sie Aufnahmen für den Eingriff von Gabeln eines Gabelstaplers oder den Eingriff anderer Hubeinrichtungen bilden,
    dadurch gekennzeichnet, dass

    - der Stapel einen Tragkörper (1) aus einem einstückigen Element aufweist, welcher durch die unterste Dämmstoffplatte des Stapels gebildet ist,

    - der Tragkörper (1) aus einer ebenen, bodenartigen und kontinuierlichen Tragfläche (2) und aus Tragelementen (3) gebildet ist, welche an dessen Unterseite angeordnet sind, von der Tragfläche (2) nach unten vorstehen, Stützfüße des Tragkörpers bilden und die Eingriffsaufnahmen (4) zwischen sich in Art von Nuten begrenzen

    - der Tragkörper (1) einschließlich der Tragelemente (3) aus demselben Material wie die Dämmstoffplatten des Stapels hergestellt ist

    - Ausbildung der Tragfläche (2) entsprechend der Länge und Breite der Dämmstoffplatten des Stapels.


     
    2. Stapel nach Anspruch 1, dadurch gekennzeichnet, dass die Eingriffsaufnahmen (4) sich über die gesamte Breite der Dämmstoffplatte erstreckten.
     
    3. Stapel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Eingriffsaufnahmen (4) durch Fräsen oder Schneiden der Dämmstoffplatte oder durch Pressen der Dämmstoffplatte gebildet sind.
     
    4. Stapel nach Anspruch 1, dadurch gekennzeichnet, dass die Tragelemente (3) streifenartige Elemente sind.
     
    5. Stapel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Tragelemente (3) bündig abschließend mit der Tragfläche mindestens an zwei gegenüberliegenden Seiten der Tragfläche (2) ausgebildet sind.
     


    Revendications

    1. Pile de panneaux isolants réalisés en laine minérale, qui sont placés les uns sur les autres et enveloppés par une feuille ou plusieurs bandes de feuilles, dans laquelle ladite pile est supportée sur son côté inférieur par des éléments porteurs (3), réalisés en laine minérale, qui sont disposés à une distance les uns des autres permettant de délimiter des cavités de prise entre eux, pour l'insertion des branches de chariots élévateurs ou l'insertion de tout autre moyen de levage,
    caractérisée en ce que

    - la pile est dotée d'un corps porteur (1) constitué d'un élément d'un seul tenant, qui est constitué par le panneau isolant inférieur de la pile,

    - le corps porteur (1) est constitué d'une surface porteuse (2) continue, plane, semblable à un plancher et d'éléments porteurs (3) qui sont disposés sur son côté inférieur, se projettent vers le bas depuis la surface porteuse (2), forment des pieds de support du corps porteur et délimitent les cavités de prise (4) entre eux, en forme de gorges,

    - le corps porteur (1) comprenant les éléments porteurs (3), est réalisé dans le même matériau que les panneaux isolants de la pile,

    - la formation de la surface porteuse (2) correspond à la longueur et à la largeur des panneaux isolants de la pile.


     
    2. Pile selon la revendication 1, caractérisée en ce que les cavités de prise (4) s'étendent sur toute la largeur du panneau isolant.
     
    3. Pile selon l'une quelconque des revendications précédentes, caractérisée en ce que les cavités de prise (4) sont réalisées à l'aide de systèmes de broyage ou de coupe ou par compression du panneau isolant.
     
    4. Pile selon la revendication 1, caractérisée en ce que les éléments porteurs (3) sont des éléments semblables à une bande.
     
    5. Pile selon l'une quelconque des revendications précédentes, caractérisée en ce que les éléments porteurs (3) se terminent à ras de la surface porteuse au moins sur deux côtés opposés de ladite surface porteuse (2).
     




    Drawing








    Cited references

    REFERENCES CITED IN THE DESCRIPTION



    This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

    Patent documents cited in the description