Fabric (woven – knitted – or nonwoven textile or cloth – etc.) – Woven fabric – Woven fabric including a nonwoven fabric layer other than paper
Patent
1996-09-16
1998-05-05
Raimund, Christopher
Fabric (woven, knitted, or nonwoven textile or cloth, etc.)
Woven fabric
Woven fabric including a nonwoven fabric layer other than paper
442247, 442318, 442319, B32B 502
Patent
active
057473935
DESCRIPTION:
BRIEF SUMMARY
SPECIFICATION
The invention relates to a textile fabric for seat covers or cushions, in particular for seats in motor vehicles, which is especially designed for achieving a climatizing effect.
By a climatizing effect for seat covers or cushions in motor vehicles it is understood that these are to have--apart from a comparatively high air permeability--thermal conductivity for conducting the body heat away from the body, capillary action for transmitting moisture, and rear-ventilating property.
BACKGROUND OF THE INVENTIONS
Cushioning materials for motor vehicle seats are being utilized in the art with various material compositions, designs and constructions. The least expensive and therefore most frequently employed materials are polyurethane foams of various densities. Besides these, in vehicles in the upper price range, constructions of polyurethane foam and rubberized hair, as well as mixtures of polyester fibres and animal fibres (wool) in conjunction with polyurethane foam are utilized. A further possibility is the use of wadding mats of polyester/copolyester thermobonded nonwoven as padding material (VDI congress "Textilien im Automobil", 14th-15th Oct. 1992, pages 88 ff).
A technical variant is a seat construction with rear ventilation and additional Gore-tex.RTM. membrane (Technische Textilien, Jul./Aug. 1993, p. T172).
Disadvantages of the heretofore employed seat designs lie in the fact that neither polyurethane foams nor rubberized hair have the thermal conductivity required for conducting the body heat away from the body, even under the most favourable conditions such as the body being at rest and an ambient temperature of 20.degree. C. In addition, the mentioned materials impede the transmission of moisture as a result of their low capillary action. The manufacture of superior material compositions or seat constructions is more complicated and they are in addition more difficult to recycle. Recycling, in particular, is of great importance at present as disposal capacities are decreasing while costs are rising.
Seating materials of polyester/copolyester thermobonded nonwoven have the advantage of a high air permeability, but they also have the great drawback of being complicated to manufacture. In their manufacture wadding mats are placed in various plies one upon the other, offset by 90 degrees, and are pressed, in order to achieve high restoring forces.
DESCRIPTION OF THE INVENTION
It is the object of the present invention to provide a textile fabric for seat covers or cushions, in particular for seats in motor vehicles, which is especially designed for achieving a climatizing effect while at the same time being easy to manufacture and effective in use, as well as being reprocessable by means of unbroblematic disposal due to its suitability for recycling, and which, apart from its high air permeability, has sufficient thermal conductivity for conducting body heat away from the body, as well as a satisfactory capillary action for moisture transport, and enables an economically efficient manufacture.
In a textile fabric of the kind mentioned hereinabove this object is achieved by the invention in that the said textile fabric is made up of several plies of textile fabrics in sandwich-like arrangement and comprises the following plies: and moisture distributing properties, respectively; and moisture distributing properties, respectively; properties.
One embodiment provides for the textile fabric to have an additional, fifth layer right at the bottom which has a stabilizing property.
Further advantageous properties are provided for according to the disclosed features of the invention.
In this connection, the first ply may be a woven or knitted fabric of synthetic staple fibres or filaments. This is preferably a polyester knitted fabric.
The second ply is a needle-punched nonwoven of synthetic staple fibres, preferably of polyester needle-punched nonwoven.
The third ply may be a needle-punched nonwoven fabric of synthetic and/or natural staple fibres. Preferably, this is a viscose rayon needl
REFERENCES:
KMITTA, "Textilien im Automobil", 14th-15th Oct., 1992, pp. 88-105.
Technische Textilien, Jul./Aug. 1993 pp. T172-174.
Eckel Petra
Pelz Edgar
Potzler Bernd
Lohmann GmbH & Co. KG
Raimund Christopher
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