Sustainable velvet needle-punched non-woven fabric and application thereof

Abstract

The present invention relates to a velvet needle-punched nonwoven fabric prepared by laying an optionally pre-consolidated fibrous web on a brush-like needle-punched substrate and needling the fibrous web on the substrate wherein the fibrous web comprises a spunbonded fibrous web having filaments wherein the filaments comprise multi-component filaments, the invention relates to a multicomponent filament having at least one high melting point component and at least one heat-activatable low melting point component, the melting point of the low melting point component measured according to DIN ISO 11357-3 (2013) being at least 10 DEG C lower than the melting point of the higher melting point component, wherein the velvet needle-punched nonwoven fabric comprises at least 70% by weight of recycled synthetic polymer material based on the total weight of the velvet needle-punched nonwoven fabric.

Description

Technical Field

[0001] The present invention relates to a sustainable velvet needle-punched nonwoven fabric produced by placing an optionally pre-consolidated fiber web on a brush-like substrate and needle-punching the fiber web onto the substrate. The invention also relates to a preferred method for producing the velvet needle-punched nonwoven fabric and its use. Background Art

[0002] DE 34 44 763 A1 discloses a device and a method for producing a velvet needle-punched nonwoven fabric, wherein a pre-needled staple fiber web is placed on an endless brush-like needled substrate and then needled on the side facing the needled substrate, forming a pile surface. Since the fibers captured by the needles in this method are needled into the brushes of the needled substrate, the nonwoven fabric needled in this manner acquires a velvety appearance.

[0003] In order to improve the warping resistance of such velvet needle-punched nonwovens, DE 44 09 771 A1 further proposes laying a staple fiber web onto a brush-like needle-punched substrate with an intermediate layer of a layer (especially a spunbond fiber web) having a higher warping resistance than the staple fiber web. The method is then carried out in such a way that the pile fibers are drawn through the layer having a higher warping resistance during needling. According to this document, particular attention should be paid to keeping the weight per unit area of the intermediate layer of spunbond fiber web as low as possible so that, on the one hand, the intermediate layer does not impede the formation of the pile surface and, on the other hand, the intermediate layer does not appear in the appearance of the velvet needle-punched nonwoven fabric made of staple fibers.

[0004] Velvet needle-punched nonwoven fabrics of the type described are increasingly used for linings in motor vehicle interiors. A disadvantage is that, in order to achieve the wear resistance required for this application, 200 to 300 g / m² of velvet needle-punched nonwoven fabrics must be added. 2 Latex adhesives are not only very expensive, but also contain volatile organic compounds (VOCs), which escape into the interior of the vehicle (fogging). Given the generally increasing awareness of the environment, health, and quality, such emissions are no longer tolerable in interior spaces, such as in vehicles, building products, or residential interiors.

[0005] EP 2 050 850 A1 describes a velvet needle-punched nonwoven fabric which already has high environmental compatibility, health compatibility and quality and which nevertheless exhibits very good mechanical properties, such as high abrasion resistance.

[0006] Velvet needle-punched nonwovens often have to fulfill decorative purposes and are therefore colored. In order to be able to produce a uniformly colored product range, it is important to be able to reproduce the desired color well, especially during series production (color matching). This is often complex in practice, and color changes often take a long time until the desired color tone is achieved. Summary of the Invention

[0007] The object of the present invention is to provide a velvet needle-punched nonwoven, in particular for lining interior spaces, which is sustainable and meets particularly high demands for environmental compatibility, health compatibility, and quality, while nevertheless exhibiting very good mechanical properties, such as high abrasion resistance. Furthermore, during its production, it should be possible to color-match the nonwoven in a particularly simple and reproducible manner to the desired color tone (color matching).

[0008] This object is achieved by a velvet needle-punched nonwoven fabric according to claim 1, and is therefore achieved by a velvet needle-punched nonwoven fabric, which is produced by laying an optionally pre-consolidated fiber web on a brush-shaped needle-punched substrate and needle-punching the fiber web on the substrate, wherein the fiber web comprises a spunbond fiber web with filaments, wherein the filaments comprise multicomponent filaments with at least one high-melting component and at least one heat-activatable low-melting component, wherein the melting point of the low-melting component measured according to DIN ISO 11357-3 (2013) is at least 10° C. lower than the melting point of the higher-melting component, and wherein the velvet needle-punched nonwoven fabric contains at least 70% by weight of recycled synthetic polymer material (Polymeraterial), based on the total weight of the velvet needle-punched nonwoven fabric.

[0009] Claim 16 relates to a textile lining comprising the velvet needle-punched nonwoven fabric according to the invention. Claim 17 relates to preferred applications of the textile lining. The dependent claims relate to preferred embodiments of the invention.

[0010] In the following, in the sense of the present invention, filaments are understood to be continuous fibers. In contrast, staple fibers are understood to be fibers with a finite length. The term "fiber" includes both filaments and staple fibers.

[0011] According to the present invention, a velvet needle-punched nonwoven fabric is designed, which is prepared by laying an optionally pre-consolidated fiber web on a brush-shaped needle-punched substrate and needle-punching the fiber web on the needle-punched substrate, wherein the fiber web comprises a spunbond fiber web having filaments, wherein the filaments comprise multicomponent filaments having at least one high-melting point component and at least one heat-activatable low-melting point component.

[0012] According to the invention it has been found that velvet needle-punched nonwovens of the aforementioned type can be produced which comprise at least 70% by weight of recycled synthetic polymer materials and are thus sustainable and at the same time exhibit good mechanical properties, such as high abrasion resistance.

[0013] Recycled polymeric materials can be distinguished from "virgin" polymeric materials.

[0014] The appropriate methods are as follows:

[0015] 1. Analysis of chemical composition. Recycled polymers often contain impurities or additives that are typical for recycled polymers.

[0016] 2. Molecular weight distribution: Recycled materials usually have a different molecular weight distribution than virgin materials.

[0017] It is preferred to use these methods in combination.

[0018] Within the scope of this application, newly prepared, ie non-recycled, polymers are referred to as “virgin” polymers, as is customary in the art.

[0019] Practical tests have also shown that the use of recycled synthetic materials makes it easier to adjust the desired color (simple color matching). This effect can be attributed to the fact that recycled synthetic polymer materials, such as recycled polyethylene terephthalate copolymer (r-CoPET) and recycled polyethylene terephthalate (r-PET), are usually not white, but rather have a grayish initial color. Surprisingly, it was found that this initial color facilitates the adjustment of the desired color of the velvet needle-punched nonwoven fabric without making it difficult, as might be expected.

[0020] For this reason, the preferred velvet needle-punched nonwoven fabric of the present invention is colored. "Colored" is understood here to mean that at least the visible surface of the velvet needle-punched nonwoven fabric is not white. The term "colored" encompasses black, gray shades, and all colors of the color spectrum, regardless of their intensity and brightness. Preferably, at least the visible surface of the velvet needle-punched nonwoven fabric is gray or black. Preferably, the velvet needle-punched nonwoven fabric is gray or black overall, that is, on its visible surface and in its interior.

[0021] In a preferred embodiment, at least the visible surface of the velvet needle-punched nonwoven fabric has a color according to the RGB color model (version effective September 1, 2023) such that at least one of the three RGB values of red, green, and blue is less than 255. Preferably, at least the visible surface of the velvet needle-punched nonwoven fabric has a color such that at least one of the three RGB values of red, green, and blue is less than 250, more preferably less than 245, and in particular less than 240. Further preferably, at least the visible surface of the velvet needle-punched nonwoven fabric has a color such that the difference between each two RGB values is less than 10, preferably less than 5, more preferably less than 1, and in particular 0.

[0022] The principles of colorimetry are described in DIN 5033-1:2017-10, Color measurement - Part 1.

[0023] In a preferred embodiment, the velvet needle punched nonwoven fabric comprises 70 to 100 wt. %, preferably 80 to 100 wt. %, more preferably 90 to 100 wt. %, more preferably 95 to 100 wt. % of recycled synthetic polymer material, based on the total weight of the velvet needle punched nonwoven fabric. Such nonwoven fabrics are particularly sustainable.

[0024] In a particularly preferred embodiment, the velvet needle-punched nonwoven fabric contains r-PET (recycled polyethylene terephthalate), r-CoPET (recycled polyethylene terephthalate copolymer), r-PP (recycled polypropylene), and / or r-CoPP (recycled polypropylene copolymer). In practical tests, it has been found that particularly good color matching can be achieved using these materials. The velvet needle-punched nonwoven fabric particularly preferably contains r-PET and / or r-PP.

[0025] In this regard, the velvet needle-punched nonwoven fabric preferably contains 70 to 100% by weight, more preferably 80 to 100% by weight, even more preferably 90 to 100% by weight, even more preferably 95 to 100% by weight of r-PET (recycled polyethylene terephthalate), r-CoPET (recycled polyethylene terephthalate copolymer), r-PP (recycled polypropylene) and / or r-CoPP (recycled polypropylene copolymer), based on the velvet needle-punched nonwoven fabric.

[0026] The synthetic polymer material can be present in the filaments of the spunbond web and / or in other fibers, preferably in the staple fibers optionally present in the velvet needle-punched nonwoven.

[0027] It is very particularly preferred that the velvet needle-punched nonwoven fabric contains r-PET as the recycled synthetic polymer material in combination with CoPET, preferably with r-CoPET, and / or r-PP in combination with CoPP, preferably with r-CoPP. If a polymer is mentioned without an additional word such as "r-" or "virgin" (e.g. "CoPET"), the polymer is understood according to the invention to be both recycled and virgin polymers.

[0028] In a particularly preferred embodiment, the velvet needle-punched nonwoven fabric contains a combination of the following substances:

[0029] - 80% to 99% by weight, preferably 85% to 99% by weight, more preferably 95% to 99% by weight, of r-PET, based on the total weight of the velvet needle-punched nonwoven fabric, and

[0030] 1% to 20% by weight, preferably 1% to 15% by weight, more preferably 1% to 5% by weight, of CoPET, preferably r-CoPET, based on the total weight of the velvet needle-punched nonwoven fabric; or

[0031] Contains a combination of the following substances:

[0032] 80% to 99% by weight, preferably 85% to 99% by weight, more preferably 95% to 99% by weight, of r-PP, based on the total weight of the velvet needle-punched nonwoven fabric, and

[0033] 1% to 20% by weight, preferably 1% to 15% by weight, more preferably 1% to 5% by weight, of CoPP, preferably r-CoPP, based on the total weight of the velvet needle-punched nonwoven fabric.

[0034] An advantage of recycled CoPET and recycled PET is that they exhibit particularly good and higher gas and moisture barriers than virgin CoPET and virgin PET, which is advantageous for various applications, such as interior decoration in the automotive sector and carpet flooring.

[0035] In a preferred embodiment, the filaments of the spunbond web comprise

[0036] 60% to 99% by weight, preferably 75% to 99% by weight, more preferably 90% to 99% by weight, based on the total weight of the filaments of the spunbond web, of a high melting point component, preferably selected from r-PET, and

[0037] 1% to 40% by weight, preferably 1% to 25% by weight, more preferably 1% to 10% by weight, based on the total weight of the filaments of the spunbond web, of a heat-activatable low-melting component, preferably selected from CoPET, preferably r-CoPET; or comprising

[0038] - 60% to 99% by weight, preferably 75% to 99% by weight, more preferably 90% to 99% by weight, based on the total weight of the filament, of a high melting point component, preferably selected from r-PP, and

[0039] 1 to 40 wt.-%, preferably 1 to 25 wt.-%, more preferably 1 to 10 wt.-%, based on the total weight of the filaments of the spunbond web, of a heat-activatable low-melting component, preferably selected from CoPP, preferably r-CoPP.

[0040] A further advantage of the velvet needle-punched nonwoven fabric according to the invention is that a very high wear resistance is achieved even without the use of additional chemical binders. The latex paint which is usually applied to the back of the nonwoven fabric in applications in motor vehicle interiors to improve the wear resistance of the velvet needle-punched nonwoven fabric can be completely omitted. As a result, the velvet needle-punched nonwoven fabric according to the invention does not contain fogging-active substances. The harmful emissions of volatile hydrocarbons associated with latex paint can be completely avoided in the velvet needle-punched nonwoven fabric according to the invention. As a result, the velvet needle-punched nonwoven fabric according to the invention meets the highest requirements for health compatibility, environmental compatibility and quality. In addition, the absence of latex binders also leads to significant cost advantages.

[0041] According to the present invention, the velvet needle-punched nonwoven fabric comprises a spunbond fiber web having filaments. Therefore, the velvet needle-punched nonwoven fabric comprises a spunbond fiber web having filaments. The use of a spunbond fiber web not only has the advantage that it imparts a texture to the textile fabric in a manner known per se, but also Spunbond webs have a certain strength. They can also be produced very cost-effectively. However, compared to staple fiber webs, spunbond webs are generally characterized by a very smooth, less fluffy appearance. The filaments lie primarily in a horizontal plane, which negatively affects the bulge structure and velvety properties.

[0042] Even with spunbond webs, even at high basis weights, needling on a brush-like needled substrate, as described in DE 43 44 763 A1, can produce raised textile fabrics with a velvety appearance. Even the restoration of the raised structure under load, which is essential for velvety needled nonwovens, is achieved. The needled spunbond webs retain their known good properties, such as high resistance to warping, very good deformability, high dimensional stability, and abrasion resistance.

[0043] The weight per unit area of the velvet needle-punched nonwoven fabric is preferably 300 g / m 2 Up to 800g / m 2 , preferably 350g / m 2 Up to 700g / m 2 , especially 400g / m 2 Up to 600g / m 2 The weight per unit area is measured according to DIN EN 29073-1:1992-08.

[0044] The weight per unit area of the spunbond web is preferably 50 g / m 2 Up to 500g / m 2 , preferably 70g / m 2 Up to 300g / m 2 , especially 100g / m 2 Up to 200g / m 2 .

[0045] If the velvet needle-punched nonwoven fabric of the invention is also thermally bonded after needling, the recovery ability, warping resistance and dimensional stability of the velvet needle-punched nonwoven fabric of the invention can be further improved. According to the invention, it is preferred that the velvet needle-punched nonwoven fabric is thus thermally bonded.

[0046] The velvet needle-punched nonwoven fabric of the present invention can be produced using a method such as that described in DE 34 44 763 A1. For example, special method variations that result in surface structuring of velvet needle-punched nonwoven fabrics are also known from EP 0 411 647 A1. Here, for example, depending on the desired structuring, fork needles and / or crown needles can be used. Accordingly, single-stage or multi-stage methods are also described. These methods can also be applied to the velvet needle-punched nonwoven fabric of the present invention without limitation.

[0047] According to the present invention, the filaments comprise multicomponent filaments having at least one high-melting component and at least one heat-activatable low-melting component. Preferably, the multicomponent filaments comprise bicomponent filaments. Bicomponent filaments are known per se. They have a low-melting component consisting of a heat-activatable low-melting polymer and a high-melting component consisting of a high-melting polymer.

[0048] "High melting point" and "low melting point" here mean that the melting point of the low-melting component is at least 10°C lower than the melting point of the higher-melting component, preferably 10°C to 20°C lower. This is advantageous because it prevents the higher-melting component from being damaged during thermal activation. Melting points are measured according to DIN EN ISO 11357-2 (Edition: 2014-07).

[0049] According to the present invention, the heat-activatable low melting point component functions as a binder or latex binder, but does not have the disadvantages associated with the use of such binders or other chemical binders, such as fogging, low recyclability, and the like.

[0050] The proportion of multicomponent filaments, especially bicomponent filaments, based on the total weight of the velvet needle-punched nonwoven fabric is preferably not less than 30% by weight. The proportion of multicomponent filaments, especially bicomponent filaments, is preferably 5% to 30% by weight, especially 15% to 25% by weight, in each case based on the total weight of the velvet needle-punched nonwoven fabric. This is advantageous for abrasion resistance.

[0051] Spunbond web can be constructed in a single layer or multiple layers. It can be composed of one or more filaments.

[0052] Preferably, the multicomponent filaments, in particular the bicomponent filaments, at least on their visible surface, particularly preferably have a color according to the RGB color model (version effective September 1, 2023) such that at least one of the three RGB values of red, green and blue is less than 255. Preferably, at least the visible surface of the velvet needle-punched nonwoven fabric has a color such that at least one of the three RGB values of red, green and blue is less than 250, even more preferably less than 245, in particular less than 240.

[0053] In a preferred embodiment, the velvet needle punched nonwoven fabric comprises staple fibers. The staple fibers can be blended into a spunbond web.

[0054] It is preferred that the proportion of staple fibers does not exceed 95% by weight, based on the total weight of the velvet needle-punched nonwoven fabric, since at higher values, abrasion resistance, tensile strength, and dimensional stability decrease. Preferably, the proportion of staple fibers is in the range of 70% by weight to 95% by weight, in particular in the range of 75% by weight to 85% by weight, each based on the total weight of the velvet needle-punched nonwoven fabric.

[0055] Accordingly, the proportion of the filaments is preferably in the range from 5% by weight to 30% by weight, in particular from 15% by weight to 25% by weight, in each case based on the total weight of the velvet needle-punched nonwoven.

[0056] Furthermore, the proportion of spunbond webs is also preferably in the range from 5% to 30% by weight, in particular from 15% to 25% by weight, in each case based on the total weight of the velvet needle-punched nonwoven.

[0057] Very particularly preferably, the filaments and / or staple fibers independently of one another contain r-PET as recycled synthetic polymer material in combination with CoPET, preferably r-CoPET, and / or r-PP in combination with CoPP, preferably r-CoPP.

[0058] In another preferred embodiment, the staple fibers contain recycled synthetic polymer materials, preferably r-PET (recycled polyethylene terephthalate), r-CoPET (recycled polyethylene terephthalate copolymer), r-PP (recycled polypropylene) and / or r-CoPP (recycled polypropylene copolymer), in a proportion of 70% to 100% by weight, based on the total weight of the staple fibers.

[0059] The staple fibers are preferably also multicomponent fibers, preferably bicomponent fibers, wherein with regard to the polymers preferably used, the embodiments described above and below for the filaments apply. The staple fibers can also be monocomponent staple fibers.

[0060] In another preferred embodiment, the staple fibers comprise multicomponent, preferably bicomponent, staple fibers comprising recycled synthetic polymer materials, preferably r-PET (recycled polyethylene terephthalate), r-CoPET (recycled polyethylene terephthalate copolymer), r-PP (recycled polypropylene) and / or r-CoPP (recycled polypropylene copolymer), in a proportion of 40% to 100% by weight, preferably 45% to 100% by weight, based on the total weight of the multicomponent staple fibers.

[0061] In another preferred embodiment, the staple fibers comprise single staple fibers, which contain recycled synthetic polymer materials, preferably r-PET (recycled polyethylene terephthalate), r-CoPET (recycled polyethylene terephthalate copolymer), r-PP (recycled polypropylene) and / or r-CoPP (recycled polypropylene copolymer), in a proportion of 70% to 100% by weight, preferably 80% to 100% by weight, in particular 90% to 100% by weight, based on the total weight of the single staple fibers.

[0062] In a preferred embodiment, the staple fibers comprise the following materials, as long as they are configured as multi-component staple fibers:

[0063] 40% to 90% by weight, preferably 45% to 80% by weight, in particular 45% to 60% by weight, based on the total weight of the multicomponent staple fibers, of a high-melting component, preferably selected from r-PET, and

[0064] 10% to 60% by weight, preferably 20% to 55% by weight, more preferably 40% to 55% by weight, based on the total weight of the multicomponent staple fibers, of a heat-activatable low-melting component, preferably selected from CoPET, especially r-CoPET; or

[0065] 40% to 90% by weight, preferably 45% to 80% by weight, in particular 45% to 60% by weight, based on the total weight of the multicomponent staple fibers, of a high-melting component, preferably selected from r-PP, and

[0066] - 10% to 60% by weight, preferably 20% to 55% by weight, more preferably 40% to 55% by weight, based on the total weight of the multicomponent staple fibers, of a heat-activatable low-melting component, preferably selected from CoPP, particularly preferably r-CoPP.

[0067] In another preferred embodiment, the staple fibers contain monocomponent staple fibers in a proportion of 70% by weight to 95% by weight, based on the total weight of the staple fibers.

[0068] In another preferred embodiment, the staple fibers contain multicomponent staple fibers in a proportion of 5% to 30% by weight, based on the total weight of the staple fibers.

[0069] The staple fibers can be incorporated into the velvet needle-punched nonwoven fabric in such a way that they are incorporated into the filament stream of the spunbond web. Thus, in one embodiment, the web comprises staple fibers that are incorporated into the filament stream of the spunbond web during its production. This results in a particularly uniform velvet needle-punched nonwoven fabric.

[0070] However, it is also possible to lay the staple fibers on a spunbond web ply or between two spunbond web plies and to introduce the fibers into the spunbond web ply by a needle punching process. Furthermore, the two plies can be produced separately and assembled only in a downstream step, for example, by means of a needle punching step. Thus, in another embodiment, the web comprises staple fibers, which are laid on at least one spunbond web ply in the form of at least one, preferably preconsolidated, staple fiber web ply.

[0071] The bulge structure and its recovery can be further improved by incorporating crimped staple fibers. This effect can also be achieved by using crimped continuous filaments.

[0072] The addition of staple fibers can also be used to achieve reproducible and uniform dyeing of velvet needle felts. Here, the staple fibers or both fiber types can serve as color carriers. Color adjustment is achieved by metering the staple fibers. This reproducible color adjustment can also be achieved by dyeing continuous filaments in a continuous spinning process. However, the staple fiber process is generally much more flexible and therefore allows for faster color changes.

[0073] As mentioned above, the use of recycled synthetic polymer materials allows for particularly good color matching.

[0074] Therefore, the staple fibers particularly preferably have, at least on their visible surface, a color according to the RGB color model (version effective September 1, 2023) such that at least one of the three RGB values of red, green, and blue is less than 255. Preferably, at least the visible surface of the velvet needle-punched nonwoven fabric has a color such that at least one of the three RGB values of red, green, and blue is less than 250, even more preferably less than 245, in particular less than 240.

[0075] Furthermore, the staple fibers particularly preferably have a proportion of recycled synthetic polymer material of at least 80% by weight, for example 80% to 100% by weight, more preferably 90% to 100% by weight, in particular 95% to 100% by weight, based on the total weight of the staple fibers.

[0076] According to the invention, a plurality of different fibers, in particular a plurality of different filaments and / or staple fibers, can be used. The differences can be, for example, in composition or also in fiber or filament thickness.

[0077] In this case, a stepped or gradient structure of layers composed of different fibers and / or filaments can be designed. Thus, for example, discrete transitions can be formed between layers with different fibers and / or filaments, or a continuous enrichment of filaments or fiber types toward one of the surfaces can be envisioned. If the fibers or filaments contain a low-melting, heat-activatable adhesive polymer, an adhesion promoter layer can be formed in this simple manner. In a gradient structure, this adhesive polymer also leads to consolidation and stabilization within the layer.

[0078] Due to their exceptional mechanical stability, environmental compatibility, health compatibility, and quality, textile linings comprising the velvet needle-punched nonwoven fabrics of the invention are particularly well-suited for use in the object sector. This includes all target groups, including those not belonging to the private sector, such as offices, schools, banks, insurance companies, hotels, social and nursing facilities, sports facilities, and in particular also interior fittings in the automotive sector, on board ships, trains, etc.

[0079] In the field of objects, extremely high demands are placed on technical quality. The textile lining according to the present invention meets these requirements. Preferred applications include the lining of vehicle interiors, including passenger and luggage compartment linings, and carpet flooring, both as web products and in the form of tiles. However, other applications for such textile linings are also possible, such as wall coverings, partition walls, etc. From the above-described embodiments, it is clear that the textile lining according to the present invention can also be used in the private sector, such as in residential areas.

[0080] The textile lining according to the invention can also be provided with flame-retardant, antistatic or antimicrobial properties, for example, for use in the above-mentioned applications.

[0081] The application possibilities of the velvet needle-punched nonwoven according to the invention or the textile lining according to the invention are by no means limited to the specific fields of application mentioned above.

[0082] Particularly for applications in the field of automotive interior linings or carpet flooring, it may be advantageous to provide the textile lining according to the invention with a so-called heavy-duty layer. The use of heavy-duty layers in the field of automotive interior linings is well known. They serve to decouple the material according to the mass-spring principle. The heavy-duty layer is extruded directly onto the carpet using a layer made of PE, with the introduction of heat, and thus eliminates the need for additional adhesion promoters. The heavy-duty layer typically consists of CaCO3 and EVA. A decoupling agent, such as cotton shoddy or foam, is then applied to it. However, according to a preferred embodiment of the invention, the heavy-duty layer can also be applied in the form of a nonwoven fabric, in particular a spunbond nonwoven fabric. This not only simplifies the process control but also offers advantages from the perspective of recyclability, as will be explained below.

[0083] Furthermore, according to another preferred embodiment, the lining according to the invention can be equipped with a sound-absorbing layer, either in combination with the heavy layer or separately. The sound-absorbing layer can be formed in a manner known per se by a so-called cotton shoddy with an intermediate layer that restricts air permeability, but can also be formed by a microfiber web connected to a cotton shoddy or a needle-punched web, or by the needle-punched web itself.

[0084] The above-mentioned plies and / or layers are preferably bonded together by adhesive layers. For the adhesive layers, conventional adhesives can be used. From the viewpoint of environmental compatibility and health compatibility as well as from an economic viewpoint (simplified process control, fewer process steps), according to a particularly preferred embodiment of the present invention, plies made of multicomponent filaments and / or fibers, preferably bicomponent filaments and / or fibers, can also be used for these adhesive layers. Alternatively or separately, single filaments or fibers consisting of low-melting-point polymers, such as copolymers, can be used for the adhesive layer. In these embodiments mentioned at the end, chemical adhesives that may cause known fogging problems can therefore be completely omitted.

[0085] According to a preferred embodiment of the present invention, for application described in the application, use core / skin, side-by-side type, island-in-the-sea type and / or PIE (also referred to as hollow PIE)-long filament or staple fiber as bicomponent long filament and / or staple fiber.By bicomponent long filament or staple fiber with trilobal geometry, or by the bicomponent long filament or staple fiber (=centralized arrangement of binding polymer and matrix polymer) obtained by the spinneret of bone-like capillary geometry cause fiber or long filament better anchoring in nonwoven fabric and therefore cause tensile strength and the abrasion resistance of material also further improving.Particularly preferably, bicomponent long filament and / or staple fiber are core / skin fibers.

[0086] The stiffness of the textile lining can also be adjusted in a simple manner by the ratio of multicomponent filaments and / or multicomponent staple fibers, preferably bicomponent filaments and / or staple fibers. The higher this ratio, the higher the stiffness of the material.

[0087] The low-melting-point component of the multicomponent filaments and / or multicomponent staple fibers, preferably bicomponent filaments and / or staple fibers, preferably comprises r-CoPET (recycled copolyester), r-CoPA (recycled copolyamide), r-PA (recycled polyamide), r-PP (recycled polypropylene) and / or r-CoPP (recycled copolypropylene), and the high-melting-point component preferably comprises r-PET (recycled polyester), r-PA (recycled polyamide), r-PBT (recycled polybutylene) and / or r-PP (recycled polypropylene).

[0088] Particularly preferred low melting point components are r-CoPET (recycled copolyester) and / or r-CoPP (recycled polypropylene). Particularly preferred high melting point components are r-PET (recycled polyester) and / or r-PP (recycled polypropylene).

[0089] A particularly preferred low-melting component is r-CoPET (recycled copolyester). In r-CoPET, PET is preferably present as the main component, preferably in a proportion of greater than 40% by weight, more preferably greater than 50% by weight, even more preferably greater than 60% by weight, and in particular greater than 90% by weight. The comonomer may be aromatic and aliphatic polyamides, aromatic and aliphatic epoxides, aromatic and aliphatic polyurethanes, polysiloxanes, polyacrylates, and / or polyacrylamides.

[0090] In r-CoPP, PP is preferably present as the main component, preferably in a proportion of greater than 40 wt%, more preferably greater than 50 wt%, even more preferably greater than 60 wt%, and especially greater than 90 wt%.

Claims

1. A velvet needle-punched nonwoven fabric produced by laying an optionally preconsolidated fiber web onto a brush-shaped needle-punched substrate and needle-punching the fiber web onto the substrate, wherein the fiber web comprises a spunbond fiber web having filaments, wherein the filaments comprise multicomponent filaments having at least one high-melting component and at least one heat-activatable low-melting component, wherein the melting point of the low-melting component measured according to DIN ISO 11357-3 (2013) is at least 10° C. lower than the melting point of the higher-melting component, characterized in that The velvet needle punch nonwoven fabric contains at least 70% by weight of recycled synthetic polymer material, based on the total weight of the velvet needle punch nonwoven fabric.

2. The velvet needle-punched nonwoven fabric according to claim 1, characterized in that: At least the visible surface of the velvet needle-punched nonwoven fabric has a color according to the RGB color model (version effective September 1, 2023) such that at least one of the three RGB values of red, green and blue is less than 255.

3. The velvet needle-punched nonwoven fabric according to claim 1 or 2, characterized in that: The velvet needle-punched nonwoven fabric comprises r-PET (recycled polyethylene terephthalate), r-CoPET (recycled polyethylene terephthalate copolymer), r-PP (recycled polypropylene) and / or r-CoPP (recycled polypropylene copolymer).

4. Velvet needle-punched nonwoven fabric according to any one or more of the preceding claims, characterized in that The multicomponent filaments comprise bicomponent filaments.

5. Velvet needle-punched nonwoven fabric according to any one or more of the preceding claims, characterized in that The velvet needle-punched nonwoven fabric contains r-PET combined with CoPET, or r-PP combined with CoPP.

6. Velvet needle-punched nonwoven fabric according to any one or more of the preceding claims, characterized in that The velvet needle-punched nonwoven fabric contains - 80% to 99% by weight of r-PET, based on the total weight of the velvet needle-punched nonwoven fabric, and - 1 to 20 wt% of CoPET based on the total weight of the velvet needle punched nonwoven fabric; or - 80% to 99% by weight of r-PP, based on the total weight of the velvet needle-punched nonwoven fabric, and 1 to 20 wt. % CoPP, based on the total weight of the velvet needle-punched nonwoven fabric.

7. Velvet needle-punched nonwoven fabric according to any one or more of the preceding claims, characterized in that The proportion of the filaments is 5% to 30% by weight, in particular 15% to 25% by weight, based in each case on the total weight of the velvet needle-punched nonwoven.

8. Velvet needle-punched nonwoven fabric according to any one or more of the preceding claims, characterized in that The velvet needle-punched nonwoven fabric contains staple fibers, preferably in a proportion of 70% to 95% by weight, based on the total weight of the velvet needle-punched nonwoven fabric.

9. The velvet needle-punched nonwoven fabric according to claim 8, characterized in that: The staple fibers contain recycled synthetic polymer materials, preferably r-PET, r-CoPET, r-PP and / or r-CoPP, in a proportion of 70% to 100% by weight, based on the total weight of the staple fibers.

10. The velvet needle-punched nonwoven fabric according to claim 8 or 9, characterized in that: The staple fibers are constructed as multicomponent staple fibers and include - 40% to 90% by weight, based on the total weight of the multicomponent staple fibers, of a high melting point component, preferably selected from r-PET, and - 10% to 60% by weight, based on the total weight of the multicomponent staple fibers, of a heat-activatable low-melting component, preferably selected from CoPET; or - 40% to 90% by weight, based on the total weight of the multicomponent staple fibers, of a high melting point component, preferably selected from r-PP, and 10% to 60% by weight, based on the total weight of the multicomponent staple fibers, of a heat-activatable low-melting component, preferably selected from CoPP, particularly preferably r-CoPP.

11. Velvet needle-punched nonwoven fabric according to any one or more of the preceding claims, characterized in that The web contains staple fibers in the form of at least one staple fiber web ply deposited on at least one spunbond web ply.

12. Velvet needle-punched nonwoven fabric according to any one or more of claims 8 to 11, characterized in that The staple fibers have, at least on their visible surface, a color according to the RGB color model (version effective September 1, 2023) such that at least one of the three RGB values of red, green, and blue is less than 255.

13. Velvet needle-punched nonwoven fabric according to any one or more of the preceding claims, characterized in that The multicomponent filaments and / or the multicomponent fibers are core / sheath fibers.

14. Velvet needle-punched nonwoven fabric according to any one or more of the preceding claims, characterized in that The low-melting component of the multicomponent filaments and / or multicomponent staple fibers comprises r-CoPET (recycled polyester copolymer) and / or r-CoPP (recycled polypropylene).

15. Velvet needle-punched nonwoven fabric according to one or more of the preceding claims, characterized in that The high melting point component of the multicomponent filaments and / or multicomponent staple fibers comprises r-PET (recycled polyester) and / or r-PP (recycled polypropylene).

16. Textile lining, in particular for lining interior spaces in the field of objects and in living areas, comprising at least one ply of a velvet needle-punched nonwoven fabric forming a velvet surface, characterized in that The velvet needle-punched nonwoven fabric according to any one of claims 1 to 15.

17. Use of the textile lining according to claim 16 for lining the interior space of a motor vehicle, such as a passenger compartment or luggage compartment.