FI70004B - ADVERTISING AV SITSAR OCH LIKNANDE - Google Patents

Description

\ * α £ * τ · '\ γβι m NOTICE OF PUBLICATION 70004 tBJ (11) UTLÄGGNIN GSSKRIFT / UUU4 C (45) Patent ...

Patent 'Velat 12 00 1030 (51) Kv.ik.4 / lnt.Cl.4 B 68 G n / 06, A h / C 7/20 §UQ | y || __p || ^^^ | ^ Q ( 21) Patent application - Patentansökning 802360 (22) Filing date - Ansökningsdag 2 5.07.80 fFh '* (23) Starting date - Giltighetsdag 2 5.0 7.8 0 (41) Published public - Blivit offentlig 26.01.82

National Board of Patents and Registration Date of publication and publication. -

Patent- och registerstyrelsen '' Ansökan utlagd och utl.skriften publicerad 31 .01 .86 (32) (33) (31) Privilege claimed - Begärd priority (71) Etablissements M. Duret S Fils, 27800 Brionne, France-Frankrike (FR) ) (72) Jean-Louis Danton, Boulogne, France-France (FR) (7 * 0 Keijo Heinonen Ky (5 **) Upholstery of a seat or the like - Beklädnad av sitsar och 1 iknande The present invention relates to a flexible upholstery covering which is particularly intended, although not exclusively, for the upholstery of seats or the like used in public spaces, and in particular for public transport.

It is common knowledge that seats in public buildings or public transport are constantly subjected to vandalism, and they have often been found to be damaged and worn out.

Thus, the upholstery of seats in public use has quite often been cut with a knife or crushing object, for example, and often needs to be replaced.

It is known that such upholstery materials generally comprise a fabric or plastic material of the outer cover which covers a flexible filling, such as cord, kapok or foam, which, depending on the thickness and type of seat in question, is supported by either a rigid base or straps attached to the frame, or mattresses.

- 2 - 70004

It is clear that the material used for the cover, due to its low thickness, cannot withstand the effect of the cutting object and that the filling, due to its structure, is even less resistant to such treatment, so that such an object is easy to pierce.

To overcome this drawback, the invention firstly proposes the use of a relatively thick flexible plastic material as a cover, which is reinforced with a net made of durable coil springs, such as a coil spring net made of metal.

Such a solution is well able to eliminate the entire risk of tearing, but this advantage is often achieved at the expense of convenience.

The object of the invention is therefore also to eliminate the disadvantages of lime. In this sense, the invention provides a flexible upholstery which achieves: - a comfort comparable to conventional upholstery methods; - excellent resistance to tearing, and - an easy, automated method of implementation, which makes it possible to significantly reduce the manufacturing cost of upholstery and enables manufacturing in large series at very low cost.

These results are achieved by a cladding comprising: - a cover formed by a relatively thick layer of plastic material, which, however, has good flexibility; of a resilient mesh material which is sufficiently resistant to the action of a cutting object and an intermediate layer which acts as a connector of the cover And a net made of cellular plastic material or the like And which adheres to another surface of the cover and at least partially covers the mesh components.

_ 3 - 70004

The cladding according to the invention is characterized by the features mentioned in the characterizing part of claim 1.

One feature of the invention is that said flexible net comprises a spring plate of metal coils used in spring mattresses.

According to another feature of the invention, the cover is made of a dense layer of polyvinyl chloride. In this case, in order to provide a good bond between the cover and the foam material, the latter is expanded polyvinyl chloride foam.

An embodiment of the invention will now be described with reference to an embodiment not intended to limit the invention, which can be seen in the accompanying drawing, in which: Figure 1 is a cross-sectional view of an application of the cladding according to the invention; Figure 2 is a perspective view of the cladding according to Figure 1.

It can be seen from Figures 1 and 2 that the cladding comprises a flexible cover 1 made of a dense layer of polyvinyl chloride (PVC). This cover 1 is connected to a net 2 formed by a spring plate made of metal coils used in spring mattresses by means of a layer 3 of polyvinyl chloride foam PVC. This PVC foam thus adheres firmly to the cover and covers the upper surface of the coils of the net.

In the present example, the net 2 is attached at its ends to a frame 4 obtained by welding a cylindrical rod.

It is clear that such a structure makes it possible to combine the flexibility properties of the cover 1, the PVC foam layer 3 and the flexible net. In addition, the middle layer 3 of PVC foam prevents the springs of the layer 2 from being felt, for example, when sitting on the cladding.

It also ensures that the cover is upright and feels good.

- 4 - 70004

In fact, in the case where this middle layer does not exist and where the resilient net is directly connected to the cover at the apexes of the springs, the cover tends to lose shape and sink at each of the attachment points, making the appearance of the cladding less pleasing.

In contrast, in the cladding according to the invention, the cover is evenly supported by the middle layer, which layer, due to its flexibility, regains its original shape after the deformation. Such a so-! Another advantage of the application is that the combination of the cover and the middle layer \ is more durable than a cover made of only one layer, so it is possible to use - • a less durable and thus lighter and cheaper flexible net.

Otherwise, the tear resistance of such an upholstery is excellent, so that: - for the first time, the effect 1 of an object to be cut, such as a knife, would initially be prevented by a relatively thick layer of cover 1,

- the passage of the knife would then stop in the wire mesh 2. I

j At this point, the transverse shear effect on the cladding is prevented by the springs of the net 2 holding the knife blade.

For this reason, the only damage to which such cladding is exposed is limited incisions that can be easily repaired by gluing.

□ It should be noted that the PVC layer forming the cover 1 can advantageously be refractory, whereby due to its thickness it gives a very good resistance to the cladding assembly1 against fire. This also applies to layer 3.

If one of the metal coils forming the net 2 breaks, the end of this coil could only very difficult to penetrate the end layer 11, thus eliminating the risk of injuring the user.

The ways in which the described upholstery can be attached to the seat are! diverse and depend on the type of seat in question. In particular, an independent base can be used in the method due to its flexibility and flexibility, or a flexible frame can be used as a conventional frame.

Claims (3)

5 70004 Finally, it is noted that the production of the cladding can be carried out as follows: - in the first step, a dense PVC layer (cover 1) is molded into the desired shape; - a PVC foam layer 3 is then applied to the inner surface of this layer, which adheres to the dense PVC layer, and - a metal mesh 2 is applied to the PVC foam 3> during or before polymerization so that the tops of its coils are pressed into the foam 3- performed automatically, with the appropriate equipment, so that the price becomes much lower than with conventional manual upholstery. Resilient upholstery of a soft seat or the like, characterized in that it comprises a relatively thick and durable, yet very resilient cover (1), a resilient net (2) forming a unitary layer (2) of coil springs, the coil springs being intertwined and whose center lines are in the top layer parallel to the intermediate layer (3) made of a plastic or like foam and which is fixed on one side of the top layer (1) and on the other side of the cover part joustinkerrosta (2) with a uniform, elastic and durable layer of the product to form. Cladding according to Claim 1, characterized in that the cover (1) is made of dense polyvinyl chloride. Cladding according to claim 1, characterized in that said plastic foam is polyvinyl chloride foam.