MATERIAL WEB OF A BELLOWS OF A GANGWAY BETWEEN TWO ARTICULATELY CONNECTED VEHICLES AND MATERIAL WEB OF A CANOPY ROOF OF AN AIR PASSENGER STAIR OR BRIDGE

Abstract

A material web for a bellows of a gangway between two articulately connected vehicles or a material web for a canopy roof of an air passenger bridge or air passenger stair has at least one reinforcement layer and an elastomer coating on each side of the reinforcement layer. The reinforcement layer is a nonwoven material and an adhesion-promoting layer is disposed between the nonwoven material and the elastomer coatings.

Claims

1. A material web for a bellows of a gangway of the type extending between two articulately connected vehicles or for a canopy roof of the type for an air passenger bridge or air passenger stair, the material web comprising: at least one reinforcement layer having a pair of opposed sides, the at least one reinforcement layer being formed of a nonwoven material; an elastomer coating disposed on each of the opposed sides of the at least one reinforcement layer; wherein an adhesion-promoting layer is disposed between the nonwoven material of the at least one reinforcement layer and each of the elastomer coatings.

2. A material web according to claim 15, wherein the nonwoven material is selected from a group consisting of a nonwoven fabric, a Vliesline, a nonwoven knitted fabric and a nonwoven non-crimp fabric.

3. A material web according to claim 15, wherein the nonwoven material includes a plurality of non-crimp fabric layers.

4. A material web according to claim 17, wherein the plurality of non-crimp fabric layers are formed and/or connected with each other such that the nonwoven material can absorb different tensile forces from a plurality of directions.

5. A material web according to claim 17, wherein each of the non-crimp fabric layers comprises mono-directionally oriented yarns.

6. A material web according to claim 19, wherein the non-crimp fabric layers of mono-directionally oriented yarns rest on one another in such a manner that the yarns of each non-crimp fabric layer are disposed at an angle relative to the other of the non-crimp fabric layers.

7. A material web according to claim 15, wherein the at least one layer of a nonwoven material comprises elastic yarns.

8. A material web according to claim 15, wherein the non-woven material comprises yarns having different thicknesses.

9. A material web according to claim 17, wherein each of the non-crimp fabric layers comprises yarns having a thickness that is different from a thickness of yarns in other of the non-crimp fabric layers.

10. A material web according to claim 23, wherein at least one non-crimp fabric layer with yarns of greater thickness is embedded between at least two layers with yarns of lesser thickness.

11. A material web according to claim 15, wherein at least one of the elastomer coatings has a perforation defined therethrough.

12. A material web according to claim 25, wherein the perforation is a micro-perforation.

13. A material web according to claim 17, wherein at least some of the non-crimp fabric layers have yarns made of different materials than the yarns of other of the non-crimp fabric layers.

14. A material web according to claim 17, wherein the yarns of one of the non-crimp fabric layers are made of different materials.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In the following, the invention is exemplarily described in more detail based on the drawings.

[0014] FIG. 1 is a schematic view of an articulated vehicle with a bellows as part of the gangway between the two vehicle parts;

[0015] FIG. 2 is a schematic view of three non-crimp fabric layers disposed above one another to form a nonwoven material;

[0016] FIG. 3 is a schematic view of a cross-sectional view of a nonwoven material coated with an elastomer on both sides;

[0017] FIG. 4 is a schematic cross-sectional view of a nonwoven material coated with an elastomer on both sides, wherein the elastomer coating has a perforation on one side.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] According to FIG. 1, the articulated vehicle, labelled 1, features the gangway, labelled 3 as a whole, between the two vehicle parts 2 and 4, wherein the gangway comprises a bellows, labelled 6 as a whole. The bellows 6 is designed as a folding bellows or as a corrugated bellows and has several folding or corrugated webs as material webs connected to each other by sewing, which are moreover held by circumferential bellows frames.

[0019] The subject-matter of the invention is the material web for forming the folding or corrugated bellows as part of a gangway between two articulately connected vehicles, in order to allow people to cross from one vehicle part into the other vehicle part without being exposed to weather conditions, by means of the bellows.

[0020] In this context, FIG. 2 shows three layers of non-crimped yarns 10, 11 and 12, which are disposed at an angle of 90°, respectively 45° relative to each other. This means that the yarns of the non-crimp fabric layer 11 are at an angle of 90° relative to the non-crimp fabric layer 12, whereas the non-crimp fabric layer 10 is at an angle of respectively 45° relative to the non-crimp fabric layers 11 and 12. The usable non-crimp fabric layers form the nonwoven material; the nonwoven material forms the material web together with the elastomer coating.

[0021] According to FIG. 3, the nonwoven material 9 has four non-crimp fabric layers or non-crimp fabric plies, wherein the yarns of the individual non-crimp fabric layers 11 and 12 are disposed at an angle relative to each other, in particular at an angle of 90°. The reinforcement formed by the nonwoven material 9, which includes the several non-crimp fabric layers 11 and 12, comprises the elastomer coating 21, 22 on both sides for forming the material web 20, wherein it is definitely conceivable to form the elastomer coatings from different elastomer materials. For example, it can be provided that the one outer layer is made of silicone and the other outer layer of an EPDM. An adhesion-promoting layer 7 is provided between the respective elastomer layer on the one hand and the nonwoven material on the other hand, said adhesion-promoting layer ensuring, in addition to an adhesive bond between the elastomer coating and the nonwoven material, that during calendering, i.e. during the coating process, the elastomer coating does not completely permeate the nonwoven material while in the non-vulcanized state. This means that the adhesion-promoting layer serves as a barrier for the elastomer coating. In this respect, depending on the coating material, the adhesion-promoting layer can be formed by a polyolefin adhesion promoter or by a silicone adhesion promoter.

[0022] FIG. 4 shows the so-called micro-perforation 26 of the one elastomer coating. The micro-perforation comprises several channels 25, which protrude into the reinforcement designed as a nonwoven material from the outer side of the elastomer coating 21. This perforation, in particular the micro-perforation, is provided on the side of the material web, where the source of the noise is located, i.e. more specifically on the outer side of a bellows.

LIST OF REFERENCE NUMBERS

[0023] 1 Articulated vehicle

[0024] 2 Vehicle part

[0025] 3 Gangway

[0026] 4 Vehicle part

[0027] 6 Bellows

[0028] 7 Adhesion-promoting layer

[0029] 9 Nonwoven material

[0030] 10, 11, 12 Non-crimp fabric layer

[0031] 20 Material web

[0032] 21, 22 Elastomer coating

[0033] 25 Channel

[0034] 26 Perforation