EP0689785B1 - Vandalenresistentes Sitz-Element - Google Patents

Vandalenresistentes Sitz-Element Download PDF

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Publication number
EP0689785B1
EP0689785B1 EP19950420170 EP95420170A EP0689785B1 EP 0689785 B1 EP0689785 B1 EP 0689785B1 EP 19950420170 EP19950420170 EP 19950420170 EP 95420170 A EP95420170 A EP 95420170A EP 0689785 B1 EP0689785 B1 EP 0689785B1
Authority
EP
European Patent Office
Prior art keywords
layer
mesh
foam
cushion
laceration
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
EP19950420170
Other languages
English (en)
French (fr)
Other versions
EP0689785A1 (de
Inventor
Louis Alirol
Pierre André Jay
José Ercilla
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.)
IRAUSA LOIRE SA
Original Assignee
IRAUSA LOIRE 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 IRAUSA LOIRE SA filed Critical IRAUSA LOIRE SA
Publication of EP0689785A1 publication Critical patent/EP0689785A1/de
Application granted granted Critical
Publication of EP0689785B1 publication Critical patent/EP0689785B1/de
Anticipated expiration legal-status Critical
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/02—Seat parts
    • A47C7/24—Upholstered seats
    • A47C7/26—Upholstered seats with reinforcement of the external layer of the upholstery, e.g. vandal resistant

Definitions

  • the seats of public transport are increasingly the object of acts vandalism consisting of either punching, puncturing, or lacerating with utensils sharp and sharp, either peel or delaminate them by tearing off the layers making up the covering the back and seat cushions, either covering them with paint or other dye product sprayable with a bomb, or finally to try to make them burn.
  • U.S.-A-3,647,608 describes a composite seat element resistant to punching and laceration comprising a resistant outer layer, a layer anti-laceration formed from fibers or metallic threads, non-woven or forming meshes, and a comfort layer consisting of a synthetic foam in which the layer anti-laceration is submerged, the layers being bonded by foam.
  • Patent EP-A-190,064 provides the anti-laceration coating, on the one hand, in replacing the metallic fibers and wires with a knitting of thin steel and multi-strand wires, and, on the other hand, by adding a protective layer constituted by an anti-fire complex.
  • the various layers of the coating are linked by a flexible adhesive, for example based on polyurethane.
  • One of the objects of the invention is to provide a seat element which does not have not the disadvantages of current elements, i.e. offering good resistance to delamination, without affecting comfort and anti-laceration function.
  • the seat element according to the invention also aims to remedy this disadvantage.
  • This seat element is of the compound type, as described in AU-B-591030, a foam cushion protected by a composite covering comprising a first layer of flexible outer covering, knitted, woven or nonwoven, one layer anti-laceration consisting of a lattice of knitted wire, and a bonding layer thin and made of a flexible synthetic material.
  • the bonding layer is composed of two plies in polyethylene which, arranged on either side of the wire mesh, are linked to each other at through the lattice by localized fusion of their constituent material, after flame of one of their face, one of these plies being similarly bonded to the coating layer outside, while the cushion is made of compressible foam and has a thickness between 15 and 35 mm and that the face of the element coming into contact with the user is concave at least transversely.
  • the comfort foam compresses to the maximum, without offering resistance allowing the sharp object to pass through the mesh and, therefore, pass through it. It result that the laceration is limited to the outer layer which, thanks to its fusion bond with the trellis, cannot be delaminated.
  • the reference numeral 2 denotes the outer layer constituted by a fabric, by a textile substrate, woven or not, in natural and / or synthetic fibers
  • the references 3a and 3b designate the two layers of a bonding layer trapping a wire mesh 4
  • 5 denotes a comfort layer
  • 6 a rigid metal or plastic wall.
  • the sheets 3a and 3b are made of polyethylene.
  • Layer 3a is linked to the tablecloth exterior 2 by fusion after flame.
  • the sheet 3b is linked to the sheet 3a by fusion after flaming by enclosing the lattice 4, which is thus embedded between these two layers.
  • the anti-laceration mesh 4 is, in known manner, obtained by knitting yarns mono or multi-metal metallic to offer flexibility allowing it to bend.
  • the comfort layer 5 is made of polyurethane foam and has, according to the invention, a thickness between 15 and 35 mm. Its connection with the web 3b, is ensured either by partial melting of this sheet 3b after flame treatment, or by a layer of flexible glue.
  • the material of the foam is chosen from the materials synthetic to obtain a sufficient density to ensure comfort, while with good compressibility to sharp action. Polyurethane foams or silicones meet this definition.
  • the comfort of the user is ensured both by the foam of comfort 5, but also by the flexibility of the covering A formed by layers 2 to 4, layers which, thanks to their mode of connection, retain their natural flexibility and without altering the fluffy of the element.
  • connection of the comfort layer 5 with the sheet 3b can very well be assured by a flexible adhesive depositing in the liquid state, and having a lesser adhesion than a viscous glue, since the delamination of coating A with respect to the layer 5 is impossible.
  • the embodiment shown in Figure 3 differs from the previous one by the presence, between the ply 3b and the comfort layer 5, of a fire-resistant ply 8, composed for example of an aramid fiber felt.
  • FIG. 6 illustrates a form of implementation of the method for manufacturing the composite coating A. It relates more particularly to the coating shown in the Figure 3 and composed of an outer layer 2, a ply 3a, a ply 3b, a ply fireproof 8 and a wire mesh 4. These different layers, sheets and mesh are continuously assembled at a station which they supply from a coil not shown. AT this station, the sheet 3a passes in front of a row of burners 10 whose flames 12 carry one of its faces has a temperature favoring the local melting of its constituent material. Immediately after the burners, the sheet 3a is pressed between two pressure rollers 13 against the outer layer 2 to which it bonds by fusion to form a complex 14.
  • a another station a row of burners 15 produces flames 16 which locally carry the sheet 3b at its melting temperature. After this flaming, the sheet 3b passes between two pressure rollers 17 which press it against the fire-resistant layer 8 and thus ensure its connection positive with this layer to form a complex 15.
  • the plies 3a and 3b are subjected by the pressure rollers 12, 17 and 19 to a reduction in their thickness.
  • their initial thickness is of the order of 1.5 mm
  • their final thickness is of the order of 0.8 mm, which leads to a composite coating A having a thickness of the order of 2 mm.
  • each seat element is then formed, either by in situ molding, or by assembly.
  • the coating A is previously conformed to the shape of the future element and arranged in the mold for forming the foam cushion, so that the resin constituting this cushion ensures the bond by adhesion of the cushion with the coating A and with the rigid part 6, also added to the mold.
  • the foam cushion is molded separately and is bonded, on the one hand, to the plate support 6 and, on the other hand, with complex coating A.
  • the seat element B or the back element C is shaped as a wafer. In the form shown in these figures, it is made up of coating A and foam 5 comfort and fits into a suitable housing 22 of the frame 23 of the seat. The bottom 22a of this housing replaces the plate 6 of the previous embodiments.
  • Each element B or C is linked to the frame 23 by fixing means allowing its interchangeability.
  • each element A or B has a face 20 coming into contact with the user who is concave at least transversely, so that in case of laceration of the outer layer, as shown in 24 in the figure 5, the edges of the slit thus produced tend to approach each other under the movements of the user while progressively masking the slit.
  • This arrangement which provides self-closing of the slot, by elastic recovery and surface compression, discomfort delamination of the coating and makes the slit less visible, therefore less plausible for a vandalism.
  • the sectioned strands remain included in the melted polyethylene of the plies 3a-3b and therefore do not risk injuring the user through the outer layer 2.
  • the seat element according to the invention allows, by the combination of its components and their mode of connection, but also of its very form, to meet most of the anti vandalism constraints, namely laceration, punching, delamination and even fire resistance.

Landscapes

  • Laminated Bodies (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)

Claims (1)

  1. Sitzelement, welches widerstandsfähig gegenüber Vandalismus ist und zur Anlage auf einer starren und undeformierbaren Oberfläche kommt, gebildet von einem Schaumstoffpolster (5), welches durch einen Verbundbezug (A) geschützt ist, der eine gewirkte, gewebte oder nicht gewebte, flexible erste Lage (2) des äußeren Bezugs, eine Anti-Zerreißlage (4), die durch ein Geflecht von gewirkten metallischen Fäden gebildet ist, und eine Verbindungslage umfaßt, die eine geringe Dicke aufweist und durch ein flexibles synthetisches Material gebildet ist, wobei diese Verbindungslage sich auf beiden Seiten des Geflechts erstreckt und auf einer Seite mit dem flexiblen äußeren Bezug und auf der anderen Seite mit dem Polster verbunden ist, dadurch gekennzeichnet, daß die Verbindungslage aus zwei Polyäthylenschichten (3a, 3b) gebildet ist, die auf beiden Seiten des metallischen Geflechts (4) angeordnet sind und durch das Geflecht (4) hindurch durch eine lokalisierte Fusion ihres Grundmaterials miteinander verbunden sind, und zwar nach einem Anbrennen einer ihrer Flächen, wobei die eine (3a) dieser Schichten in der gleichen Weise mit der äußeren Bezuglage (2) verbunden ist, wobei das Polster (5) aus einem komprimierbaren Schaumstoff hergestellt ist und eine Dicke zwischen 15 und 35 mm besitzt, und wobei die mit dem Verwender in Kontakt kommende Fläche (20) des Elements wenigstens in Querrichtung konkav ist.
EP19950420170 1994-06-29 1995-06-27 Vandalenresistentes Sitz-Element Expired - Lifetime EP0689785B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9408305 1994-06-29
FR9408305A FR2721812B1 (fr) 1994-06-29 1994-06-29 Element de siege resistant au vandalisme

Publications (2)

Publication Number Publication Date
EP0689785A1 EP0689785A1 (de) 1996-01-03
EP0689785B1 true EP0689785B1 (de) 1998-08-12

Family

ID=9465030

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950420170 Expired - Lifetime EP0689785B1 (de) 1994-06-29 1995-06-27 Vandalenresistentes Sitz-Element

Country Status (4)

Country Link
EP (1) EP0689785B1 (de)
DE (1) DE69503982T2 (de)
ES (1) ES2121322T3 (de)
FR (1) FR2721812B1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2317363A (en) * 1996-09-20 1998-03-25 C M I Forming a cut resistant material
DE19825544C2 (de) * 1998-06-08 2001-02-22 Saxonia Weberei Gmbh Verfahren und Vorrichtung zum Herstellen eines Sitzbezugsstoffes für schnittgeschützte Sitzpolster sowie Sitzbezugsstoff
EP1719613A1 (de) * 2005-05-04 2006-11-08 Dynatex S.A. Stich-, Schneide- und Kugelsicherer Verbundstoff

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3647608A (en) 1970-01-26 1972-03-07 Gen Tire & Rubber Co Cut-resistant foam article
FR2283201A1 (fr) 1974-09-02 1976-03-26 Compin Ets Procede permettant d'empecher la combustion des mousses de polyurethane
US4423102A (en) * 1979-02-27 1983-12-27 Etablissements M. Duret & Fils Covering structure for seating or the like
FR2576200B1 (fr) 1985-01-21 1987-04-03 Sofanor Sa Revetement anti-vandalisme pour sieges
US4673613A (en) 1985-03-21 1987-06-16 Vickers Xatal Pty. Ltd. Laminate material comprising polyurethane and metal mesh
FR2592334B1 (fr) 1985-12-27 1987-12-18 Sable Feuille composite pour le revetement de sieges et son procede de fabrication
AU591030B2 (en) * 1987-02-20 1989-11-23 Vickers Xatal Pty. Ltd. Seat upholstery
GB2204235B (en) 1987-04-29 1990-10-03 Henderson S Federal Spring Wor Vandal resistant seat
EP0512382B1 (de) * 1991-05-06 1995-11-02 C.A. Greiner & Söhne Gesellschaft M.B.H. Sitz, insbesondere Sitzpolster für öffentliche Verkehrsmittel

Also Published As

Publication number Publication date
DE69503982D1 (de) 1998-09-17
DE69503982T2 (de) 1998-12-10
ES2121322T3 (es) 1998-11-16
FR2721812A1 (fr) 1996-01-05
FR2721812B1 (fr) 1996-08-30
EP0689785A1 (de) 1996-01-03

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