EP0862959B1 - Rouleau de treillis - Google Patents

Rouleau de treillis Download PDF

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Publication number
EP0862959B1
EP0862959B1 EP19970200645 EP97200645A EP0862959B1 EP 0862959 B1 EP0862959 B1 EP 0862959B1 EP 19970200645 EP19970200645 EP 19970200645 EP 97200645 A EP97200645 A EP 97200645A EP 0862959 B1 EP0862959 B1 EP 0862959B1
Authority
EP
European Patent Office
Prior art keywords
strip
roll
compact roll
plastic foil
compact
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 - Lifetime
Application number
EP19970200645
Other languages
German (de)
English (en)
Other versions
EP0862959A1 (fr
Inventor
Michel Leulliette
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.)
Betafence Holding NV
Original Assignee
Bekaert NV 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8228078&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0862959(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Bekaert NV SA filed Critical Bekaert NV SA
Priority to EP19970200645 priority Critical patent/EP0862959B1/fr
Priority to DE1997603529 priority patent/DE69703529T2/de
Publication of EP0862959A1 publication Critical patent/EP0862959A1/fr
Application granted granted Critical
Publication of EP0862959B1 publication Critical patent/EP0862959B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F33/00—Tools or devices specially designed for handling or processing wire fabrics or the like
    • B21F33/002—Coiling or packing wire network

Definitions

  • This invention relates to a roll of wire mesh of the chain-link fencing type formed from successive interengaged wire coils, said roll having the wire coils tightly pushed together in a compact roll and being provided along both opposite borders with a separating strip between the successive windings of the compact roll.
  • Chain-link fencing wire mesh is formed of a multiplicity of like wire coils or spirals.
  • the wire coils or spirals are interengaged or interlinked with one another on so-called chain-link fencing or weaving machines.
  • Plastic-coated or galvanised steel wire or aluminium wire can be used on the weaving machines.
  • the chain-link web or fabric so produced is generally rolled up into a large diameter roll for storage or transport.
  • the invention described in the British patent No. 1.109.582 learns an improved method and machine for winding up chain-link fencing by mechanically feeding the fencing onto a travelling support and so controlling the speed of the support in relation to the speed at which the fencing is fed towards the support as to condense or compress the fencing in the direction of its travel and so wind it up into a compacted or condensed roll.
  • the French patent No. 1.594.975 substantially describes the same method as learned in the British patent No. 1.109.582. Moreover, this French patent 1.594.975 also learns that it is possible to twist each pair of successive interengaged wire coils around their common median axis, which leads to a very close approach of each pair of successive interengaged wire coils. By compacting the roll in this special way according to the French patent 1.594.975, the outer surface of the compact roll shows the typical zigzag pattern or accordion form.
  • a known disadvantage of such a compact roll of chain-link fencing mesh is that the unwinding operation of the compact roll can lead to serious problems, particularly in the case of rolls with a great width ranging between 1.5 m to 4 metres. This is particularly due to the fact that the ends of wire coils of adjacent windings of the roll are hooking into each other or that some wire coils are turning in an undesired direction during the unwinding operation of the compact roll.
  • a commonly used material by applicant for this separating strip is a special type of paper with a thickness of at least 0,5 mm.
  • a first disadvantage of this paper separating strip is that this separating material is not water resistant and can easily be torn to pieces.
  • the compact roll 1 of chain-link fencing wire mesh 2 is formed in three consecutive steps I, II and III.
  • a chain-link fencing wire mesh 2 is formed in step I by means of a conventional chain-link weaving machine.
  • Weaving machines for manufacturing such wire mesh 2 are generally known and a.o. described in the U.S.A. patent 3.512.760.
  • the wire mesh 2 is formed of a multiplicity of like wire coils or spirals 3a and 3b forming a mesh with rhombic or square openings. The successive wire coils or spirals 3a and 3b are interengaged by the weaving machine. When the formed wire mesh leaves the weaving machine it is in its normal expanded condition as shown in detail in figure 2.
  • step II of figure 1 the fencing wire mesh 2 is fed onto a travelling support (not shown) and the speed of this support is controlled in relation to the speed at which the wire mesh 2 is fed towards the support as to compress the fencing wire mesh 2 in the direction of its travel.
  • the mesh 2 is compressed or condensed in the direction of its length so that the adjacent interengaged wire coils are pushed together, as shown in detail in figure 3.
  • this method of compressing a chain-link fencing wire mesh is clearly described in detail in the British patent No. 1.109.582.
  • step III of figure 1 is shown how the already condensed wire mesh 2 is wound up into the typical zigzag pattern or accordion form 4.
  • This special zig zag form of the outer surface of the compact roll 1 is obtained by twisting each pair of successive interengaged wire coils or spirals 3a and 3b around their common median axis M 1 - M' 1 ; M 2 - M' 2 ; ... during the winding up operation of the roll around its longitudinal axis A - A'.
  • this special method of compact rolling is already long known and a.o. described in the French patent No. 1.594.975 and U.S.A. patent No. 4.124.183.
  • Figure 1 also shows how at each border 5 of wire mesh 2, a separating strip 6 is guided between the successive windings of the compact roll 1.
  • the strip 6 has e.g. a width of 20 cm, whereby at least a width of 10 cm of the strip 6 is applied against the outer side of the wire mesh 2 with respect to the axis A - A' of the roll 1 and whereby the remaining width of 10 cm of the strip 6 is protruding at the border of the compact roll.
  • the protruding part of the strip 6 is plied into a substantial U-form around each border 5 of the compressed mesh 2.
  • the separating strip 6 is made of a highly stretchable plastic foil material and is maintained in place between the successive windings of the compact roll 1 due to the exerted tension on the strip 6 during the application of the separating strip 6 against each border 5 of the compressed mesh 2.
  • the plastic foil material is supplied on a bobbin 7.
  • the necessary tension for stretching the strip 6 is preferably obtained by applying a braking force on the bobbin 7 and a driving force on the spindle of the roll 1.
  • the exerted tensioning operation on the stretchable plastic foil strip 6 results in a high elongation of at least 30 %, preferably 60 to 100 % or more, over a great part of the width of the strip 6. This high elongation of the applied stretched plastic separating strip 6 results in a certain adhesion or sticking of the applied strip 6 against the border 5 of the mesh 2.
  • the width of the plastic foil material strip supplied on a bobbin 7 is ranging between 15 to 50 cm, preferably between 20 to 40 cm.
  • a plastic foil material which gives very good results for the necessary elongation and additional adhesion is polyethylene.
  • the transparent linear polyethylene used a.o. for packaging all kinds of food products, can be easily applied against and around the borders of the wire mesh 2.
  • the used linear polyethylene foil is preferably a low density polyethylene.
  • the used plastic foil material can be removed easily without rupture of the foil material.
  • polyethylene is a preferred foil material for the separating strip 6 ; it is evident that other polymers which have substantially same characteristics for elongation and adhesion can be used for the separating strip 6.
  • Figure 4 shows a perspective view of applying the stretchable plastic foil strip 6 into a substantially U-form around a border 5 of the mesh 2.
  • Special guiding elements (not shown), such as rolls or plates or the like for bending the strip into the U-form are placed between the bobbin 7 and the mesh 2.
  • the stretchable plastic foil material strip 6 is permanently or plastically deformed by means of special tools 8 in the areas between the legs 9 and the body 10 of this U-form so that the U-formed strip 6 is permanently fixed onto the border 5 of the condensed wire mesh 2.
  • the compact roll 1 is maintained in the typical compact accordion form by wrapping helically around the roll over the whole width of the roll several layers of the same plastic foil material as used for the separating strip 6 along the two opposite borders of the finished roll.
  • This packaging or wrapping operation is preferably achieved according to a certain programme so that at both ends or borders of the roll, more layers of the used foil material fully or partly overlap each other than in the middle of the roll.
  • An important advantage is that the same foil material, such as polyethylene, is used as separating strip for the borders and for packaging the finished compact roll 1.
  • the diameter of the compact roll is substantially equal over the whole width of the roll because the diameter of the ends of the roll is substantially equal to the diameter of the whole middle of the roll due to the very low thickness of the used separating foil material for the strip 6.
  • Figure 5 shows a part of the chain-link fencing mesh 2 in a condensed or compressed position during the unwinding operation of the compact roll 1 on the ground.
  • This figure 5 clearly shows that the two separating strips 6 formed into the special U-form are maintained or fixed around each border 5 of the mesh 2 during the unwinding operation of the roll 1 on the ground.
  • spirals 3a, 3b cannot turn around their longitudinal axis because these spirals 3a, 3b are maintained between both U-formed strips 6. It means that an axial relative displacement of each spiral 3a, 3b is completely eliminated by using these U-formed strips 6.
  • Figure 6 shows a perspective view of a part of the border 5 of the partly expanded mesh 2 with a corresponding part of the separating strip 6 in the special U-form with legs 9 and body 10.
  • the edges between the legs 9 and the body 10 are permanently deformed.
  • This figure 6 tries to show that all the wire coils or spirals 3a, 3b can expand from a rather compressed position to an open position without any axial relative displacement of each spiral 3a, 3b. All the spirals 3a, 3b can only twist along their common median axis M 1 - M' 1 ; M 2 - M' 2 ; ..., but without any axial relative displacement with respect to the mesh 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
  • Winding Of Webs (AREA)

Claims (10)

  1. Rouleau compact de treillis (2) de grillage à simple torsion constitué de spires entrelacées successives, dans lequel les spires sont fortement poussées les unes contre les autres et qui est muni le long des deux bords opposés (5) d'une bande séparatrice (6) disposée entre ses enroulements successifs, la bande séparatrice (6) étant constituée d'un matériau en feuille plastique fortement extensible, le rouleau (1) étant caractérisé en ce que la bande est maintenue en place entre les enroulements successifs du rouleau compact (1) par le fort allongement de la bande qui est provoqué par la tension s'exerçant sur la bande pendant que l'on applique la bande de séparation.
  2. Rouleau compact selon la revendication 1, caractérisé en ce que l'épaisseur de la bande (6) en feuille plastique est comprise entre 10 microns et 70 microns.
  3. Rouleau compact selon la revendication 2, caractérisé en ce que l'épaisseur de la bande (6) en feuille plastique est comprise entre 30 microns et 50 microns.
  4. Rouleau compact selon une ou plusieurs des revendications 1 à 3, caractérisé en ce que la largeur de la bande (6) en feuille plastique est comprise entre 15 cm et 50 cm.
  5. Rouleau compact selon la revendication 4, caractérisé en ce que la largeur de la bande (6) est comprise entre 20 cm et 40 cm.
  6. Rouleau compact selon une ou plusieurs des revendications 1 à 5, caractérisé en ce que l'allongement de la bande de séparation (6) en feuille plastique est au moins de 30 %.
  7. Rouleau compact selon la revendication 6, caractérisé en ce que l'allongement de la bande (6) en feuille plastique qui est appliquée est compris entre 60 % et 100 %.
  8. Rouleau compact selon une ou plusieurs des revendications 1 à 7, caractérisé en ce que les deux bords opposés (5) sont munis d'une bande séparatrice (6) qui est pliée avec une forme sensiblement en U autour de chaque bord du treillis comprimé, et en ce que la feuille plastique extensible de chacune des bandes (6) en forme de U est déformée de manière permanente dans les zones comprises entre les pieds (9) et le corps (10) de la bande (6) en forme de U.
  9. Rouleau compact selon une ou plusieurs des revendications 1 à 8, caractérisé en ce que la bande (6) en feuille plastique est constitué de polyéthylène linéaire.
  10. Rouleau compact selon la revendication 9, caractérisé en ce que le polyéthylène linéaire est un polyéthylène linéaire de faible densité.
EP19970200645 1997-03-05 1997-03-05 Rouleau de treillis Expired - Lifetime EP0862959B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19970200645 EP0862959B1 (fr) 1997-03-05 1997-03-05 Rouleau de treillis
DE1997603529 DE69703529T2 (de) 1997-03-05 1997-03-05 Drahtgitterrolle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19970200645 EP0862959B1 (fr) 1997-03-05 1997-03-05 Rouleau de treillis

Publications (2)

Publication Number Publication Date
EP0862959A1 EP0862959A1 (fr) 1998-09-09
EP0862959B1 true EP0862959B1 (fr) 2000-11-15

Family

ID=8228078

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970200645 Expired - Lifetime EP0862959B1 (fr) 1997-03-05 1997-03-05 Rouleau de treillis

Country Status (2)

Country Link
EP (1) EP0862959B1 (fr)
DE (1) DE69703529T2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8376660B2 (en) 2008-01-04 2013-02-19 Nv Bekaert Sa Mining mesh with double knot

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101910534B (zh) * 2008-01-04 2014-06-25 贝卡尔特股份有限公司 具有双结的链节式编织网

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL82750C (fr) *
BE839903A (nl) * 1976-03-23 1976-09-23 Verpakking van vlechtwerk
DE2650614A1 (de) * 1976-11-04 1978-05-11 Arbed Rolle aus maschendrahtviereckgeflecht und verfahren zu deren herstellung
DE2940053C2 (de) * 1979-10-03 1984-03-22 Rösler Draht AG, 4056 Schwalmtal Verfahren zur Herstellung einer Kompaktrolle aus einer Drahtgeflechtbahn

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8376660B2 (en) 2008-01-04 2013-02-19 Nv Bekaert Sa Mining mesh with double knot

Also Published As

Publication number Publication date
DE69703529D1 (de) 2000-12-21
DE69703529T2 (de) 2001-03-15
EP0862959A1 (fr) 1998-09-09

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