EP1498526A1 - Textile lining for an interior cladding of vehicles - Google Patents

Abstract

The textile fabric has a plush or loop nap made from a spun yarn with mainly acrylic and polyester fibres. The acrylic fibres, which make up 60 to 80 per cent of the yarn, can be unbleached or all or partly dyed. A typical composition for the yarn could be 30 per cent dark dyed polyester, 30 per cent unbleached Dralon (RTM), and 40 per cent dark-dyed Dralon (RTM) fibres.

Description

Technical area

The invention relates to the field of the textile industry, and more particularly to the manufacture of textile coatings used in the automotive sector within the meaning of large.

It is more particularly aimed at a novel textile composition used as a than covering seats, door panels or roofs, or more generally all the elements of a vehicle interior likely to be covered with textile.

The invention relates more particularly to textiles having bristles or free loops, hereinafter called "velvet".

The invention aims more particularly at combining the qualities of resistance of this type velvet with qualities of comfort in terms of touch.

Previous techniques

Generally speaking, velvet used as an element coating vehicle interior are essentially made of polyester, whether the bottom layer or bristles.

Polyester is very widely used because it has a very good resistance the different constraints observed in coating applications, and in particular of seat coverings. Thus, the abrasion resistance of the polyester is quite satisfactory, and meets the criteria imposed by the various car manufacturers.

Another positive point of polyester is its very good resistance to light, which is manifested by a conservation of the colors, in spite of the exposures to radiations bright extended. Light resistance is one of the most important criteria in the choice of materials used for automotive coatings.

Polyester also has the advantage of being relatively low cost, in particular comparison with other textiles with similar mechanical qualities.

However, the tactile qualities of polyester are significantly lower than those of other yarns, especially acrylic yarns.

It has already been proposed to make automobile seat coverings from velvet whose bristles are made from acrylic threads. However, for Fire resistance issues, acrylic threads are usually used only for the pile part of the pile, the bottom being made of polyester.

If these velvets with acrylic bristles have a more pleasant feel than those polyester base, they are resistant to both mechanical and in light which is significantly lower than that of the polyester. Light resistance is mostly inferior to that required for conventional In addition, this degradation of acrylic is accompanied by the most often a shift in the nuance, which is a strictly undesirable effect for automotive coating applications.

The object of the invention is to propose a coating textile, which presents the times the strength and light-fast properties of polyester, and which possesses qualities in terms of touch comparable to those of acrylic.

Presentation of the invention

The invention therefore relates to a coating fabric for a passenger compartment element vehicle.

This textile is of the velvet type and is characterized in that it comprises hairs and free loops.

According to the invention, the bristles or free loops are made in a thread obtained from a spun yarn with a majority of acrylic fibers, and polyester fibers.

Thus, the characteristic yarns intimately combine acrylic fibers which give a pleasant touch, and polyester fibers with good resistance to light. It has been surprisingly found that the presence of polyester, although in smaller quantities, compensates for the low quality of resistance to light acrylic fibers, yet in greater quantity.

We obtain a velvet with good resistance to allied light with a particularly pleasant touch.

In practice, good results have been achieved in both resistance and using a yarn obtained from 60 to 80% acrylic, and 20 to 40% polyester, and preferably with 70% acrylic and 30% polyester.

It is possible to use threads with different colors, ensuring the separate dyeing of the acrylic and polyester fibers used, which are then mixed to obtain the yarn that will give the characteristic yarn.

Thus, in the case of a wire of clear color, one will use ecru acrylic fibers, associated with previously dyed polyester fibers.

Conversely, in the case of a dark color, it will be possible to dye all or part acrylic fibers. To make the yarn, we will therefore ensure the mixing of a fraction of dyed acrylic fibers, with unbleached acrylic fibers and polyester fibers tints.

Thanks to this assembly, it is possible to compensate for the metameric phenomena that if dyeing occurs on the wire already made, after the assembly of polyester and acrylic fibers

Indeed, thanks to the invention, it is possible to choose the dyes used for the dyeing of polyester fibers according to the dye used for the fibers acrylic, which has a smaller range, especially in the field of automotive coatings. These selected dyes can, by their own turn, balance the turns of the entire mixture and bring it closer to the desired one.

In other words, independent dyeing of polyester and acrylic fibers compensates for the relatively limited choice of dyes that can be used for dyeing acrylic, so as to limit metameric phenomena.

Example of realization

The exemplary embodiment, given below, is in no way limiting and the invention It also covers multiple variations in the choice of materials used, in to the extent that it respects the principles stated above.

Thus, according to the invention, a knitted velvet was made on a loom. circular loops.

The bottom of this velvet is composed of a textured polyester thread false twist, a title of 167 dtex, dyed. The pile threads of this velvet are formed of a yarn of fibers of a title Nm 1/40. This yarn is composed of 70% branded unbleached acrylic fibers Dralon®. The yarn also has 30% stained polyester fibers. The yarn obtained from the yarn thus has a substantially light gray color.

The velvet thus obtained undergoes a finish combining shaving and brushing operations, as well as a thermofixation on the ream of primer. The velvet thus obtained has a weight per unit area of the order of 360 g / m ² .

• 30% de polyester teint en foncé
• 30% de Dralon® écru (non teint)
• 40% de Dralon® teint en foncé

It is also possible to obtain dark colors. Thus, to reach the required pitch, the following mixture can be used including:

• 30% polyester dyed in dark
• 30% unbleached Dralon® (undyed)
• 40% of Dralon® dyed in dark

Regarding the example made with 100% of Dralon® used in ecru, it allows to obtain a very satisfactory score, namely greater than 4 for a 200h test, conducted according to the test method D47.1431 used by the French car manufacturers. For the example with a part of Dralon® dyed, the score obtained is greater than 3/4, corresponding to an intermediate score between 3 and 4. For comparison, with a equivalent product, the hair of which would be composed of 100% of Dralon® dyed, the note obtained would be less than 3/4.

It follows from the above that the textile according to the present invention the advantage of having a very good resistance to light, as well as qualities of superior touch, which allows it to meet the requirements of the specifications automotive upholstery.

Claims (4)

Coating textile for a vehicle interior element, of the type comprising bristles or free loops, such as a velvet for example, characterized in that the bristles or free loops are made of a yarn obtained from a spun yarn having a majority of acrylic fibers, and polyester fibers. Coating textile according to claim 1, characterized in that the acrylic fibers are unbleached. Coating textile according to claim 1, characterized in that all or some of the acrylic fibers are dyed. Coating textile according to claim 1, characterized in that the yarns forming the bristles or free loops comprise 20 to 40% polyester and 60 to 80% acrylic.