Flame protection fabric for vehicle seats, in particular for aircraft seats

Abstract

Disclosed is a flame protection fabric provided for vehicle cushions, in particular for aircraft cushions, the flame protection fabric including the following layers: at least one first abrasion-resistant layer as an abrasion layer including at least one textile material with high abrasion resistance of at least one fiber type, and at least one second layer as a barrier layer including at least one fibrous fleece of at least one flame-proof fiber type. The at least one abrasion layer is provided as a first layer on at least one side of the at least one barrier layer as a second layer.

Claims

1. A flame protection fabric for vehicle cushions wherein the flame protection fabric comprises the following layers: at least one first abrasion-resistant layer as an abrasion layer comprising at least one textile material with abrasion resistance, and at least one second layer as a barrier layer comprising at least one fibrous fleece of at least one flame-proof fiber type, wherein said at least one abrasion layer is provided as a first layer on at least one side of said at least one barrier layer as a second layer, wherein the at least one abrasion resistant layer consists of a fibrous fleece of 50 to 90% by weight of polyacrylonitrile (PAN) fibers and 10 to 50% by weight of para-aramide fibres applied over the entire surface of the at least one barrier layer and is not in the form of a grid or grid fabric, and wherein the at least one barrier layer consists of at least one fibrous fleece of 50 to 90% by weight of acrylonitrile fibres, 5 to 30% by weight of para-amide fibres, and 5 to 30% by weight of pre-oxidized polyacrylonitrile (preox PAN) fibres.

2. The flame protection fabric of claim 1, wherein at least one expanded graphite layer with a weight per unit area of between 30 and 110 g/m.sup.2 is provided as an intermediate layer between the at least one abrasion layer and the at least one barrier layer.

3. The flame protection fabric according to claim 1, wherein the at least one abrasion layer has a weight per unit area of between 100 and 180 g/m.sup.2.

4. The flame protection fabric according to claim 1, wherein the at least one abrasion layer has an abrasion resistance of at least 30,000 cycles.

5. The flame protection fabric according to claim 1, wherein the at least one barrier layer has a weight per unit area of between 50 and 150 g/m.sup.2.

6. The flame protection fabric according to claim 1, further comprising at least one intumescent layer.

7. The flame protection fabric according to claim 6, wherein at least one of the at least one intumescent layer includes expanded graphite, carbon or flame protection fibers.

8. The flame protection fabric according to claim 6, wherein the at least one intumescent layer is provided as an intermediate layer between the at least one abrasion layer and the at least one barrier layer.

9. The flame protection fabric according to claim 6, wherein the at least one intumescent layer has a weight per unit area of between 30 and 110 g/m.sup.2.

10. A cushion for a vehicle seat, comprising at least one coating, at least one flame protection fabric according to claim 1, at least one foam part as padding.

11. The cushion according to claim 10, wherein at least one of the at least one flame protection fabric is glued to the at least one foam part, and the flame protection fabric is laminated, coated, glued or sewn to at least one cover and is attached to the foam part by means of adhesive or fleece tapes.

12. The cushion according to claim 11, wherein the at least one cover is fastened to the foam part with flame protection fabric by means of adhesive or fleece tapes.

13. A process for producing the flame protection fabric according to claim 1 comprising the steps of: providing the at least one fibrous fleece of at least one flame-proof fiber type as the barrier layer, and applying the at least one textile material with abrasion resistance as the abrasion layer of at least one fiber type to at least one side of the at least one fibrous fleece.

14. The process according to claim 13, wherein the at least one textile material as the abrasion layer is coated with at least one intumescent layer on one side before applying to the at least one barrier layer.

15. The process according to claim 13, wherein the abrasion layer, optionally intumescent layer and barrier layer are laminated, coated, glued or needled together.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The solution is explained in more detail below with reference to the figures in the drawings.

(2) FIG. 1A shows a schematic view of a flame protection fabric according to a first embodiment,

(3) FIG. 1B shows a schematic view of a flame protection fabric according to a second embodiment,

(4) FIG. 2A shows a schematic view of a first embodiment of a cover for a seat cushion with a flame protection fabric as shown in FIG. 1B;

(5) FIG. 2B shows a schematic view of a second embodiment of a cover for a seat cushion with a flame protection fabric as shown in FIG. 1B; and

(6) FIG. 3 shows a schematic view of a seat cushion for an aircraft seat with a cover as shown in FIG. 2.

DESCRIPTION OF THE INVENTION

(7) FIG. 1A shows a first embodiment of the flame protection fabric 10 consisting of a barrier layer 11 and an abrasion layer 12. The abrasion layer 12 is provided on one side (here on the upper side) of the barrier layer 11.

(8) The barrier layer 11 consists of a fibrous fleece of 70% PYROTEX (bi-grade) fibers (acrylonitrile fibers), 15% para-aramid fibers (regenerated) and 15% preox PAN (polyacrylonitrile) fibers. In this case, the weight per unit area of the barrier layer 11 is 70 g/m.sup.2.

(9) The abrasion layer 12 consists of a fabric of 70% PAN (polyacrylonitrile) fibers and 30% para-aramid fibers. The weight per unit area of the abrasion layer is 130 g/m.sup.2.

(10) FIG. 1B shows a second embodiment of the flame protection fabric 10, in which a third intumescent layer 13 of expanded graphite is provided in addition to barrier layer 11 and abrasive layer 12. The expanded graphite begins to expand at 180° C. The intumescent layer 13 is made of expanded graphite.

(11) The expanded graphite layer 13 is intended as an intermediate layer between the abrasion layer 12 and the barrier layer 11. The expanded graphite layer is applied with a weight per unit area of 50 g/m.sup.2 to the abrasion layer 12.

(12) The fabric used as abrasion layer 12 is first coated on one side with the expanded graphite and then the needled fibrous fleece used as barrier layer 11 is laminated or coated onto the coated side of the abrasion layer.

(13) In abrasion tests using adhesive tapes, the flame protection fabric made of abrasion layer fabric, expanded graphite layer and barrier layer fleece achieves values of 4000 cycles, whereas state of the art fabrics (e.g. 7725R from Tex Tech Industries) only achieve values of 500-600 cycles in comparison.

(14) In the so-called Oil Burn Test when using the flame protection fabric on different foam cushions, the values are comparable to those of conventional fabrics. The values determined in this test are between 3 and 6% weight loss.

(15) FIG. 2A shows a first embodiment of a cover 20 for a seat cushion, especially for an aircraft seat cushion. The cover 20 includes the flame protection fabric 10 and a protective cover 21 (for example a leather cover or fabric cover). Flame protection fabric 10 and protective coating 21 may be bonded or laminated together so that the cover is one piece.

(16) FIG. 2B shows a second embodiment of a cover 20 for a seat cushion, in particular for an aircraft seat cushion. Here the flame protection fabric 10 and a foam part 22 made of various foams can be glued or laminated together. A protective coating 21 is attached to the structure of flame protection fabric 10 and foam part 22 by means of adhesive or fleece tapes.

(17) FIG. 3 shows the general structure of a seat cushion 30 for an aircraft seat. A cushion 31 completely surrounded by the flame protection fabric 10. The protective cover 21 is attached with pad 31 incl. flame protection fabric 10 by means of adhesive or fleece tapes.

(18) The cover 20 made of the flame protection fabric 10 and a protective cover 21 covers the cushion 31. The cover 20 is fastened to the underside of the cushion 31 by means of suitable fasteners such as hooks or eyelets, buttons, adhesive or fleece tapes. The cover 20 extends over the entire upper side of cushion 31 including the hollow of the knee area.