(19)
(11) EP 2 391 558 B1

(12) EUROPEAN PATENT SPECIFICATION

(45) Mention of the grant of the patent:
08.05.2013 Bulletin 2013/19

(21) Application number: 10702736.9

(22) Date of filing: 21.01.2010
(51) International Patent Classification (IPC): 
B65D 85/04(2006.01)
B65D 85/675(2006.01)
(86) International application number:
PCT/IB2010/000093
(87) International publication number:
WO 2010/084401 (29.07.2010 Gazette 2010/30)

(54)

WRAPPER FOR METAL COILS

UMHÜLLUNG FÜR METALLBÜNDE

ENVELOPPE POUR ROULEAUX MÉTALLIQUES


(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

(30) Priority: 21.01.2009 US 146261 P

(43) Date of publication of application:
07.12.2011 Bulletin 2011/49

(73) Proprietor: IBCO SRL
Brittons Hill 14027 Saint Michael (BB)

(72) Inventor:
  • WILLIAMS, Timothy, A.
    South Elgin Illinois 60177 (US)

(74) Representative: Tansini, Elio Fabrizio et al
BUGNION S.p.A. Viale Lancetti 17
20158 Milano
20158 Milano (IT)


(56) References cited: : 
GB-A- 537 287
US-A- 2 156 267
JP-A- 3 029 764
US-A- 5 867 969
   
       
    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

    Field of the Invention



    [0001] The invention pertains to the wrapping of coils of material, for example coils of metal cable or wire, to protect them from damage or corrosion. The wrapping of coils of material is known from GB 537287, US 2156267, US 5867969 and JP 03029764.

    [0002] Coils of metal are typically made in the form of cylindrical rolls having a hollow bore. To protect the metal during transportation and storage, all exposed surfaces of the roll have to be covered, including the outer periphery, the ends and the periphery of the bore. The invention is directed to an improved one-piece wrapper for accomplishing this purpose.

    Summary of the Invention



    [0003] The invention provides a wrapper for wrapping a cylindrical roll of coiled material, the wrapper having a portion that covers the outer periphery and the opposed ends of the roll, and a portion that covers the inner periphery of the roll. The two portions of the wrapper meet along longitudinal edges thereof and drawstrings extend along the length of the wrapper proximate to the two longitudinal edges of the outer cover portion to fasten the wrapper at the respective ends of the roll.

    [0004] The invention further provides a method of wrapping a cylindrical roll of coiled material

    Brief Description of Drawings



    [0005] Figure 1 is a plan view of the wrapper according to one embodiment of the invention.

    [0006] Figure 2 is a perspective view of a cylindrical roll of coiled metal to be wrapped with the wrapper of Figure 1.

    [0007] Figure 3 is a perspective view of the wrapped roll of coiled metal.

    Detailed Description of the Preferred Embodiments



    [0008] The wrapper of the invention is intended for wrapping cylindrical rolls of coiled metal, in particular steel coils. Figure 2 illustrates such a cylindrical roll 50. It has an outer periphery 52, a first end 54 and a second end 56 comprising the opposed ends of the cylinder, and a hollow bore 58 defining an inner periphery 60. Steel rolls of this form are commercially produced in a range of sizes, most commonly from about 42 inches (107 cm) long and 42 inches (107 cm) outer diameter to 66 inches (168 cm) long and 66 inches (168 cm) outer diameter, all with a bore about 20 inches (51 cm) in diameter. The wrapper of the invention can be made in different sizes depending on the size of roll to be wrapped.

    [0009] Referring to Figure 1, the wrapper 10 of the invention comprises a sheet of material having two principal parts, namely an outer cover portion 12 for covering the outer periphery 52 and the ends 54, 56 of the roll 50, and an inner cover portion 18 for covering the inner periphery 60.

    [0010] The outer cover portion 12 has opposed longitudinal edges 14, 16 and the inner cover portion 18 has opposed longitudinal edges 20, 22. The two portions are attached together along the respective longitudinal edges 16, 20. In the illustrated embodiment, the respective portions are welded together along their overlapping edges 16, 20, forming a drawstring pocket 34, as discussed below. Alternatively, the two portions 12, 18 may be affixed together by sewing, by an adhesive or by other means, forming the pocket.

    [0011] In the illustrated embodiment of the wrapper, the outer cover portion 12 and the inner cover portion 18 comprise separate sheets affixed together rather than comprising a single, integral sheet of material. Having separate sheets permits the two portions 12, 18 to be made of different sheet materials, each of which has properties particularly suitable for its respective function.

    [0012] The wrapper 10 may be made of any suitable sheet material. For example, it may comprise a multilayer laminate product having a reinforced woven fabric coated on each side with a polyethylene or polypropylene film. The films that are intended to be the inner side of the wrapper in contact with the metal coil may incorporate a volatile corrosion inhibitor. The outer cover portion 12 may be thicker or stronger than the inner cover portion 18. Either or both of the cover portions 12, 18 may comprise non-woven substrates, single or double pass coated wovens, films of various thicknesses, etc.

    [0013] A first drawstring 24 is provided along the longitudinal edge 14 of the outer cover portion 12. It is located in a narrow longitudinal pocket 15 along the edge 14. The pocket 15 is made by welding or sewing a fold along the edge 14. Alternatively, the drawstring may be attached by forming a series of holes along the edge 14 and threading it through the holes. A length of the drawstring 24 is left extending at each free end 30, 32 of the wrapper, for use in cinching and tying the drawstring, as described below. The drawstring 24 is slidably moveable within the pocket 15, permitting it to be tightened.

    [0014] A second drawstring 26 is provided along the opposed longitudinal edge 16 of the outer cover portion 12. It is located inside the longitudinal pocket 34 formed by the overlapping edges 16, 20. The pocket 34 is formed by welding or sewing along its longitudinal edges, or alternatively it may be formed by welding or sewing a fold along the edge 16 of the outer cover portion. Alternatively, the drawstring 26 may be attached by threading through holes along the edge. As with the first drawstring, a length of the second drawstring 26 is left extending at each end 30, 32 of the wrapper. The drawstring 26 is slidably moveable within the pocket 34. The drawstrings 24, 26 may be made of polypropylene cord or other materials.

    [0015] To wrap the roll of steel 50 in the wrapper 10, the roll is placed on the outer cover portion 12, with each end 54, 56 of the roll facing a respective longitudinal edge 14, 16 and approximately equidistant therefrom. The width of the outer cover portion 12 is selected to be approximately equal to the length of the roll 50 plus twice the difference between the outer diameter and the inner diameter of the roll, so that the outer cover portion 12 will extend from the edge 36 of the inner periphery 60 at the first end 54 of the roll, over the outer periphery 52 and to the edge 38 of the inner periphery 60 at the second end 56 of the roll. The outer cover portion 12 is wrapped around the roll 50 and the drawstring 26 is then tightened and tied, cinching the edge 16 of the outer cover portion against the second end 56 of the roll proximate to the edge 38 of the inner periphery 60.

    [0016] The inner cover portion 18 is then pushed into the bore 58 of the roll. The width of this inner cover portion (i.e. the distance between its longitudinal edges 20, 22) is selected to be of a length sufficient to extend along the length of the bore 58 and part way between the edge 36 of the inner periphery 60 and the edge 40 of the outer periphery 52 at the first end 54 of the roll. This part of the inner cover portion 18 that extends beyond the edge 36, identified by numeral 28 in Figure 3, is folded out against the first end 54 of the roll. The drawstring 24 is then tightened and tied, cinching the edge 14 of the outer cover portion 12 against the first end 54 of the roll, proximate to the edge 36 of the inner periphery 60. This causes the outer cover portion 12 to overlap and cover the end part 28 of the inner cover 18 at the first end 54 of the roll. The outer cover portion 12 is then closed by applying a length of tape 42 along the exposed free end 30 or 32.

    [0017] In a second embodiment of the invention, the wrapper comprises a single, integral sheet of material rather than two separate sheets affixed together. The sheet has the same configuration as that described above, except that it is a single, integral sheet, with a drawstring pocket provided in the same position as the pocket 34 of the illustrated embodiment for holding a second drawstring 26 which divides the sheet into a first portion corresponding to the outer cover portion 12 and a second portion corresponding to the inner cover portion 18.

    [0018] Although the invention has been described in terms of various embodiments, it is not intended that the invention be limited to these embodiments. Various modifications within the scope of the invention will be apparent to those skilled in the art. The scope of the invention is defined by the claims that follow.


    Claims

    1. A wrapper (10) for wrapping a cylindrical roll (50) of coiled material, the roll comprising an outer periphery (52), first (54) and second (56) ends and a hollow bore (58) extending between the first and second ends and defining an inner periphery (60) of the roll, the wrapper comprising:

    (a) a first portion (12) for covering the outer periphery and the first and second ends of the roll, the first portion having opposed first (14) and second (16) longitudinal edges;

    (b) a second portion (18) for covering the inner periphery (60) of the roll, the second portion having opposed first (20) and second (22) longitudinal edges, the first longitudinal edge of the second portion being adjacent to the second longitudinal edge of the first portion;

    (c) a first drawstring (24) extending along a length of the wrapper proximate the first longitudinal edge of the first portion;

    (d) a second drawstring (26) extending along the length of the wrapper proximate the second longitudinal edge of the first portion and the first longitudinal edge of the second portion.


     
    2. A wrapper according to claim 1, wherein the first portion (12) and the second portion (18) are separate sheets affixed together.
     
    3. A wrapper according to claim 1, wherein the first portion (12) and the second portion (18) comprise a single, integral sheet.
     
    4. A wrapper according to claim 1 or 2, wherein the first portion (12) is thicker than the second portion (18).
     
    5. A wrapper according to any one of claims 1 to 4, further comprising a first drawstring pocket (15) and a second drawstring pocket (34) extending along the length of the wrapper for holding the first (24) and second (26) drawstrings respectively.
     
    6. A wrapper (10) according to any one of claims 1 to 5 in combination with and covering the cylindrical roll (50) of coiled material, wherein the first portion (12) of the wrapper covers the outer periphery (52) and the first (54) and second (56) ends of the roll, the second portion (18) of the wrapper covers the inner periphery (60) of the roll, and the first (24) and second (26) drawstrings are cinched to hold the wrapper against the respective first (54) and second ends (56) of the roll, proximate the inner periphery (60) thereof.
     
    7. A wrapper according to claim 6, wherein the second portion (18) of the wrapper comprises a part thereof tucked under the first portion (12) of the wrapper at the first end (54) of the roll.
     
    8. A method of wrapping a cylindrical roll (50) of coiled material, comprising the steps of:

    (a) providing the cylindrical roll (50) of coiled material, the roll comprising an outer periphery (52), first (54) and second (56) ends and a hollow bore (5 8) extending between the first and second ends and defining an inner periphery (60) of the roll;

    (b) providing a wrapper (10) comprising:

    (i) a first portion (12) for covering the outer periphery and the first and second ends of the roll, the first portion having opposed first (14) and second (16) longitudinal edges;

    (ii) a second portion (18) for covering the inner periphery of the roll, the second portion having opposed first (20) and second (22) longitudinal edges, the first longitudinal edge of the second portion being adjacent to the second longitudinal edge of the first portion;

    (iii) a first drawstring (24) extending along a length of the wrapper proximate the first longitudinal edge (14) of the first portion (12);

    (iv) a second drawstring (26) extending along the length of the wrapper proximate the second longitudinal edge (16) of the first portion and the first longitudinal edge (20) of the second portion;

    (c) wrapping the first portion (12) of the wrapper around the outer periphery (52) of the roll, inserting the second portion (18) of the wrapper through the hollow bore (58) of the roll, cinching the second drawstring (26) at the second end (56) of the roll, proximate the inner periphery (60), applying a part of the second portion (18) of the wrapper to the first end (54) of the roll, and cinching the first drawstring (24) at the first end of the roll, proximate the inner periphery, such that the first portion (12) overlaps the part of the second portion (18).


     


    Ansprüche

    1. Umhüllung (10) zum Einwickeln einer zylindrischen Rolle (50) aus zusammengerolltem Material, wobei die Rolle einen Außenumfang (52), ein erstes (54) und ein zweites (56) Ende sowie eine hohle Bohrung (58) umfasst, die sich zwischen dem ersten und zweiten Ende erstreckt und einen inneren Umfang (60) der Rolle definiert, wobei die Umhüllung folgendes umfasst:

    (a) einen ersten Abschnitt (12) zum Abdecken des äußeren Umfangs der Rolle sowie des ersten und zweiten Endes der Rolle, wobei der erste Abschnitt gegenüberliegende erste (14) und zweite (16) Längskanten hat;

    (b) einen zweiten Abschnitt (18) zum Abdecken des inneren Umfang (60) der Rolle, wobei der zweite Abschnitt gegenüberliegende erste (20) und zweite (22) Längskanten hat, wobei die erste Längskante des zweiten Abschnitts benachbart zur zweiten Längskante des ersten Abschnitts liegt;

    (c) eine erste Zugschnur (24), die sich entlang einer Länge der Umhüllung in der Nähe der ersten Längskante des ersten Abschnitts erstreckt;

    (d) eine zweite Zugschnur (26), die sich entlang der Länge der Umhüllung in der Nähe der zweiten Längskante des ersten Abschnitts sowie der ersten Längskante des zweiten Abschnitts erstreckt.


     
    2. Umhüllung nach Anspruch 1, wobei der erste Abschnitt (12) und der zweite Abschnitt (18) getrennte aneinander befestigte Folien sind.
     
    3. Umhüllung nach Anspruch 1, wobei der erste Abschnitt (12) und der zweite Abschnitt (18) aus einer einzigen integralen Folie bestehen.
     
    4. Umhüllung nach Anspruch 1 oder 2, wobei der erste Abschnitt (12) dicker als der zweite Abschnitt (18) ist.
     
    5. Umhüllung nach einem der Ansprüche 1 bis 4, die ferner eine erste Zugschnurtasche (15) und eine zweite Zugschnurtasche (34) umfasst, die entlang der Länge der Umhüllung zum Halten der ersten (24) bzw. der zweiten (26) Zugschnurtasche erstrecken.
     
    6. Umhüllung (10) nach einem der Ansprüche 1 bis 5 in Kombination mit der zylindrischen Rolle (50) aus zusammengerolltem Material und diese abdeckend, wobei der erste Abschnitt (12) der Umhüllung den Außenumfang (52) der Rolle sowie das erste (54) und zweite (56) Ende der Rolle abdeckt, der zweite Abschnitt (18) der Umhüllung den Innenumfang (60) der Rolle abdeckt, während die erste (24) und zweite (26) Zugschnur eng eingewickelt sind, um die Umhüllung gegen das jeweilige erste (54) und zweite (56) Ende der Rolle in der Nähe deren Innenraums (60) zu halten.
     
    7. Umhüllung nach Anspruch 6, wobei der zweite Abschnitt (18) der Umhüllung einen Teil derselben umfasst, der unter dem ersten Abschnitt (12) der Umhüllung am ersten Ende (54) der Rolle zusammengefaltet ist.
     
    8. Verfahren zum Einwickeln einer zylindrischen Rolle (50) aus zusammengerolltem Material, mit den Schritten:

    (a) Bereitstellen der zylindrischen Rolle (50) aus zusammengerolltem Material, wobei die Rolle einen Außenumfang (52), ein erstes (54) und ein zweites (56) Ende sowie eine hohle Bohrung (58) umfasst, die sich zwischen dem ersten und zweiten Ende erstreckt und einen inneren Umfang der Rolle (60) definiert;

    (b) Bereitstellen einer Umhüllung umfassend:

    (i) einen ersten Abschnitt (12) zum Abdecken des äußeren Umfangs der Rolle sowie des ersten und zweiten Endes der Rolle, wobei der erste Abschnitt gegenüberliegende erste (14) und zweite (16) Längskanten hat;

    (ii) einen zweiten Abschnitt (18) zum Abdecken des inneren Umfangs der Rolle, wobei der zweite Abschnitt gegenüberliegende erste (20) und zweite (22) Längskanten hat, wobei die erste Längskante des zweiten Abschnitts benachbart zur zweiten Längskante des ersten Abschnitts liegt;

    (iii) eine erste Zugschnur (24), die sich entlang einer Länge der Umhüllung in der Nähe der ersten Längskante (14) des ersten Abschnitts (12) erstreckt;

    (iv) eine zweite Zugschnur (26), die sich entlang der Länge der Umhüllung in der Nähe der zweiten Längskante (16) des ersten Abschnitts sowie der ersten Längskante (20) des zweiten Abschnitts erstreckt;

    (c) Einwickeln des ersten Umhüllungsabschnitts (12) um den Außenumfang (52) der Rolle herum, Einführen des zweiten Umhüllungsabschnitts (18) durch die hohle Bohrung (58) der Rolle, enges Einrollen der zweiten Zugschnur (26) am zweiten Ende (56) der Rolle in der Nähe des Innenumfangs (60), Anbringen eines Teils des zweiten Rollenabschnitts (18) am ersten Ende (54) der Rolle und enges Einrollen der ersten Zugschnur (24) am ersten Ende der Rolle in der Nähe des Innenumfangs, sodass der erste Abschnitt (12) den Teil des zweiten Abschnitts (18) überdeckt.


     


    Revendications

    1. Enveloppe (10) pour emballer un rouleau cylindrique (50) de matériau enroulé, le rouleau comprenant une périphérie externe (52), une première (54) extrémité et une seconde (56) extrémité, et un alésage creux (58) se développant entre la première et la seconde extrémités et formant une périphérie interne (60) du rouleau, l'enveloppe comportant :

    (a) une première partie (12) pour recouvrir la périphérie externe et la première et la seconde extrémités du rouleau, la première partie ayant un premier (14) bord longitudinal et un second (16) bord longitudinal opposés ;

    (b) une seconde partie (18) pour recouvrir la périphérie interne (60) du rouleau, la seconde partie ayant un premier (20) bord longitudinal et un second (22) bord longitudinal opposés, le premier bord longitudinal de la seconde partie étant adjacent au second bord longitudinal de la première partie ;

    (c) un premier cordon de serrage (24) se développant sur une longueur de l'enveloppe près du premier bord longitudinal de la première partie ;

    (d) un second cordon de serrage (26) se développant sur la longueur de l'enveloppe près du second bord longitudinal de la première partie et du premier bord longitudinal de la seconde partie.


     
    2. Enveloppe selon la revendication 1, caractérisée en ce que la première partie (12) et la seconde partie (18) sont des feuilles séparées attachées ensemble.
     
    3. Enveloppe selon la revendication 1, caractérisée en ce que la première partie (12) et la seconde partie (18) comprennent une seule feuille entière.
     
    4. Enveloppe selon les revendications 1 ou 2, caractérisée en ce que la première partie (12) est plus épaisse que la seconde partie (18).
     
    5. Enveloppe selon l'une quelconque des revendications 1 à 4, comprenant aussi une première poche (15) à cordon de serrage et une seconde poche (34) à cordon de serrage se développant sur la longueur de l'enveloppe pour retenir le premier (24) et le second (26) cordons de serrage respectivement.
     
    6. Enveloppe (10) selon l'une quelconque des revendications 1 à 5, en combinaison avec et recouvrant le rouleau cylindrique (50) de matériau enroulé, caractérisée en ce que la première partie (12) de l'enveloppe recouvre la périphérie externe (52) et la première (54) et la seconde (56) extrémités du rouleau, la seconde partie (18) de l'enveloppe recouvre la périphérie interne (60) du rouleau, et le premier (24) et le second (26) cordons de serrage sont serrés pour garder l'enveloppe contre la première (54) et la seconde (56) extrémités du rouleau respectivement, près de sa périphérie interne (60).
     
    7. Enveloppe selon la revendication 6, caractérisée en ce que la seconde partie (18) de l'enveloppe comprend une section repliée sous la première partie (12) de l'enveloppe au niveau de la première extrémité (54) du rouleau.
     
    8. Procédé d'emballage d'un rouleau cylindrique (50) de matériau enroulé, comprenant les étapes de :

    (a) préparer le rouleau cylindrique (50) de matériau enroulé, le rouleau comprenant une périphérie externe (52), une première (54) extrémité et une seconde (56) extrémité, et un alésage creux (58) se développant entre la première et la seconde extrémités et formant une périphérie interne (60) du rouleau ;

    (b) préparer une enveloppe (10) comportant :

    (i) une première partie (12) pour recouvrir la périphérie externe et la première et la seconde extrémités du rouleau, la première partie ayant un premier (14) bord longitudinal et un second (16) bord longitudinal opposés ;

    (ii) une seconde partie (18) pour recouvrir la périphérie interne du rouleau, la seconde partie ayant un premier (20) bord longitudinal et un second (22) bord longitudinal opposés, le premier bord longitudinal de la seconde partie étant adjacent au second bord longitudinal de la première partie ;

    (iii) un premier cordon de serrage (24) se développant sur une longueur de l'enveloppe près du premier bord longitudinal (14) de la première partie (12) ;

    (iv) un second cordon de serrage (26) se développant sur la longueur de l'enveloppe près du second bord longitudinal (16) de la première partie et du premier bord longitudinal (20) de la seconde partie ;

    (c) mettre la première partie (12) de l'enveloppe autour de la périphérie externe (52) du rouleau, introduire la seconde partie (18) de l'enveloppe à travers l'alésage creux (58) du rouleau, serrer le second cordon de serrage (26) au niveau de la seconde extrémité (56) du rouleau, près de la périphérie interne (60), appliquer une section de la seconde partie (18) de l'enveloppe sur la première extrémité (54) du rouleau, et serrer le premier cordon de serrage (24) au niveau de la première extrémité du rouleau, près de la périphérie interne, de sorte que la première partie (12) chevauche la section de la seconde partie (18).


     




    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