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Title:
TEXTILE WITH VIRUS-INHIBITING EFFECT
Document Type and Number:
WIPO Patent Application WO/2022/144827
Kind Code:
A1
Abstract:
The present invention relates to a textile with virus-inhibiting effect comprising a flat weave formed by interwoven weft yarns and warp yarns, wherein the textile is treated with an antibacterial and antiviral coating. The invention also relates to a roller blind, pull-up blind, pleated blind or slatted blind, a wall covering and a carpet.

Inventors:
THIENPONT CARINE (BE)
Application Number:
PCT/IB2021/062466
Publication Date:
July 07, 2022
Filing Date:
December 30, 2021
Export Citation:
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Assignee:
CALCUTTA IMMO NV (BE)
International Classes:
D06M16/00; D06M13/44; D06M13/463; D06M13/513; D06M15/572; D06N3/00; D06N3/14; D06N7/00; E06B9/24
Domestic Patent References:
WO2002064668A12002-08-22
Foreign References:
US20180368401A12018-12-27
US8865605B22014-10-21
US8178119B22012-05-15
Attorney, Agent or Firm:
BRANTSANDPATENTS BVBA (BE)
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Claims:
CLAIMS

1. A textile with virus-inhibiting effect comprising a flat weave, formed by interwoven weft yarns and warp yarns, characterized in that the textile is treated with an antibacterial and virus-inhibiting coating.

2. The textile according to claim 1, characterized in that the antibacterial and virus-inhibiting coating comprises at least as active ingredient molecule di methyloctadecyl [3(trimethoxysilyl)propyl]ammoni urn chloride.

3. The textile according to claim 2, characterized in that the active ingredient is at least 1 wt% and at most 5 wt% of the textile.

4. The textile according to any of the previous claims 1-3, characterized in that the antibacterial and virus-inhibiting coating comprises an aqueous, aliphatic polyester polyurethane dispersion as binder.

5. The textile according to any of the previous claims 1-4, characterized in that the antibacterial and virus-inhibiting coating comprises a non-ionic dispersant, wherein the non-ionic dispersant is a preparation of fatty alcohol ethoxylates.

6. The textile according to any of the previous claims 1-5, characterized in that the antibacterial and virus-inhibiting coating comprises a fire-retardant organophosphorus-nitrogen compound.

7. The textile according to any of the previous claims 1-6, characterized in that the antibacterial and virus-inhibiting coating comprises a cationic aqueous dispersion of reactive polymers.

8. The textile according to any of the previous claims 1-7, characterized in that the antibacterial and virus-inhibiting coating on the textile has a weight of at least 20 g/m2 and at most 130 g/m2.

9. The textile according to any of the previous claims 1-8, characterized in that the warp yarns are made of polyester, wherein in the textile there are at least 10 and at most 70 warp yarns per cm.

10. The textile according to any of the previous claims 1-9, characterized in that the weft yarns are made of polyester or a composition of polyester with viscose, acrylic, flax and/or cotton, wherein in the textile there are at least 5 and at most 35 weft yarns per cm.

11. The textile according to any of the previous claims 1-10, characterized in that the warp yarns have a yarn number of at least 50 dtex and at most 350 dtex.

12. The textile according to any of the previous claims 1-11, characterized in that the weft yarns have a yarn number of at least 60 dtex and at most 5000 dtex.

13. A roller blind, pull-up blind, pleated blind or slatted blind, suitable as blind or room divider, comprising a roll-up mechanism and a roll-up textile, characterized in that the textile is according to any of the preceding claims 1-13.

14. A wall covering, comprising a textile as a visible surface, characterized in that the textile is according to any of the preceding claims 1-13.

15. A carpet, comprising a textile as walking surface, characterized in that the textile is according to any of the preceding claims 1-13.

Description:
INHIBITING EFFECT

TECHNICAL FIELD

The invention relates to a textile with virus-inhibiting effect.

In a second aspect, the invention relates to a roller blind, pull-up blind, pleated blind or slatted blind.

The invention relates in a third aspect to a wall covering.

In a fourth aspect, the invention also relates to a carpet.

PRIOR ART

The application of a coating to a textile, for instance a woven fabric or a fleece, is known from the prior art. For example, a textile is treated with a waterproof or water- repellent coating. Such a textile is for instance suitable as interior textile, such as furniture fabrics, carpets, wall covering, curtains, where it is undesirable for spilled liquids to penetrate into the furniture fabric. Other examples of finishes that are applied to a textile are dirt-repellent coatings, fire retardants, etc.

Recently, due to the Covid-19 pandemic, among other things, much more attention has been paid to an antibacterial coating on textiles. By applying an antibacterial coating to textiles, an antibacterial property can be given to textiles. This is used, for example, in sports clothing to prevent unpleasant odors and in mouth masks to reduce the risk of contamination by bacteria, for example in hospitals.

Antibacterial coatings, however, are of little or no help in inhibiting viruses. However, there are many applications for this, also with the aforementioned interior textiles, which can strongly inhibit the spread of viruses, such as the Covid-19 virus. An antibacterial coating therefore does not have the desired effect for inhibiting viruses.

An additional problem is that the application of the antibacterial coating to textiles takes place by impregnating the textiles in a bath with the antibacterial coating. The drawback of this known method is that the antibacterial coating is not necessarily permanently applied to the textile. The antibacterial coating quickly wears off the textile or the textile is not washable, so that the antibacterial activity quickly disappears, for example. This is certainly unacceptable for interior textiles because interior textiles remain in an interior for many years, for example a wall covering or a roller blind, or are used intensively, such as a carpet. A possible solution to this is to add a binder to the antibacterial coating. A problem here is that the binder reacts, for example, with an active ingredient in the antibacterial coating, whereby the desired effect of the antibacterial coating on textiles is partly lost. Similar problems arise when an antibacterial activity has to be combined with another activity in a coating. An example of this is a fire-retardant effect, which can be important for interior textiles.

The present invention aims to solve at least some of the above problems or drawbacks.

SUMMARY OF THE INVENTION

In a first aspect, the present invention relates to a textile according to claim 1. The main advantage of a textile according to the present invention is that the coating is not only antibacterial, but also antiviral. This makes the textile suitable for inhibiting viruses, for example the Covid-19 virus. The textile is therefore particularly suitable as interior textile. By using the textile in buildings, viruses that are spread by people in the building and end up on the textile are quickly and efficiently reduced, so that the spread of viruses in the building is slowed down. The spread of viruses in buildings is an important factor for infections during a pandemic.

Preferred embodiments of the device are set out in claims 2 to 12.

A specific preferred form of the invention relates to a textile according to claim 4. By using an aliphatic polyester polyurethane dispersion as a binder, the antibacterial and antiviral coating is firmly bonded to the textile, so that the antibacterial and antiviral coating does not wear off the textile quickly or rinse off the textile during cleaning. An antibacterial and antiviral coating is durably applied to the textile.

In a second aspect, the present invention relates to a roller blind, pull-up blind, pleated blind or slatted blind according to claim 13. The main advantage of a roller blind, pull-up blind, pleated blind or slatted blind according to the present invention is that the textile is treated with an antibacterial and antiviral coating. A roller blind, pull-up blind, pleated blind or slatted blind is placed near a window as a curtain or blind. A window can be opened for ventilation, as a result of which an air stream flows along or through the roller blind, pull-up blind, pleated blind or slatted blind. Viruses that float through a room in an aerosol, for example, can be carried along with the air stream to the roller blind, pull-up blind, pleated blind or slatted blind, and the virus-inhibiting effect of the textile greatly reduces the number of viruses in the room. Another possibility is that the roller blind, pull-up blind, pleated blind or slatted blind is used as a room divider. As a result, a larger space can be divided into bubbles with the help of roller blinds, pull-up blinds, pleated blinds or slatted blinds. The roller blinds, pull-up blinds, pleated blinds or slatted blinds are advantageous for that purpose compared to plexiglass screens because roller blinds, pull-up blinds, pleated blinds or slatted blinds can still be air permeable, which creates a better living and working environment in a bubble, and which promotes communication with a person in a bubble. The air permeability is also advantageous because it creates an air stream towards the roller blind, pull-up blind, pleated blind or slatted blind, so that the number of viruses in a bubble is actively reduced. This is not the case with bubbles that are separated from the room by plexiglass screens.

In a third aspect, the present invention relates to a wall covering according to claim 14. Wall coverings form large surfaces within buildings. Viruses floating around in an aerosol within buildings have a high chance of coming into contact with a wall covering sooner or later. Because the visible surface is treated with an antibacterial and antiviral coating, these viruses will be greatly reduced in number, which is advantageous for slowing down the spread of viruses within buildings.

In a fourth aspect, the present invention relates to a carpet according to claim 15. Viruses floating around in an aerosol within buildings can end up on a floor surface over time. A carpet according to the present invention is advantageous for inhibiting the spread of these viruses within buildings, because the walking surface of the carpet is treated with an antibacterial and antiviral coating, whereby the viruses are greatly reduced in number.

DETAILED DESCRIPTION

Unless otherwise defined, all terms used in the description of the invention, including technical and scientific terms, have the meaning as commonly understood by a person skilled in the art to which the invention pertains. For a better understanding of the description of the invention, the following terms are explained explicitly.

In this document, "a" and "the" refer to both the singular and the plural, unless the context presupposes otherwise. For example, "a segment" means one or more segments.

The terms "comprise", "comprising", "consist of", "consisting of", "provided with", "include", "including", "contain", "containing", are synonyms and are inclusive or open terms that indicate the presence of what follows, and which do not exclude or prevent the presence of other components, characteristics, elements, members, steps, as known from or disclosed in the prior art.

Quoting numerical intervals by endpoints comprises all integers, fractions and/or real numbers between the endpoints, these endpoints included.

In a first aspect, the invention relates to a textile with virus-inhibiting effect.

According to a preferred embodiment, the textile comprises a flat weave. The fabric is formed by interweaving weft yarns and warp yarns. The textile is treated with an antibacterial and virus-inhibiting coating. The antibacterial and virus-inhibiting coating is a single coating. The coating comprises at least one component which has both an antibacterial and an virus-inhibiting effect, or the coating comprises a mixture of at least one component which has an antibacterial activity and at least one component which has an virus-inhibiting effect. It is also possible that the coating comprises at least one component that has both an antibacterial and an virusinhibiting effect, combined with a component that has an virus-inhibiting effect, or that the coating comprises at least one component that has both an antibacterial and an virus-inhibiting effect, combined with a component that has an antibacterial activity.

The main advantage of this embodiment is that the coating is not only antibacterial, but also virus-inhibiting. This makes the textile suitable for inhibiting viruses, for example but not limited to SARS coronavirus, influenza virus, Ebola virus, West Nile virus and Covid-19. The textile is therefore particularly suitable as interior textile. By using the textile in buildings, viruses that are spread by people in the building and end up on the textile are quickly and efficiently reduced, so that the spread of viruses in the building is slowed down. The spread of viruses in buildings is an important factor for infections during a pandemic.

The textile has been tested according to test methods ASTM E-2149-20, ISO 18184 (2014) and ISO 18184 (2019) and shows a half-life of less than two hours compared to a typical half-life of 3.5 hours for untreated textiles. The number of viruses is reduced by 99% after 24 hours.

According to a preferred embodiment, the antibacterial and virus-inhibiting coating comprises at least as active ingredient molecule di methyloctadecyl [3(trimethoxysilyl)propyl]ammonium chloride.

This molecule is very suitable for avoiding the growth or action of bacteria on the textile and also prevents infection. The molecule also has an virus-inhibiting effect. The molecule punctures a viral envelope or viral sheath, destroying the virus.

It is also advantageous that this molecule is cationic. As a result, this molecule attracts viruses with a negatively charged viral envelope.

According to a further embodiment, the active ingredient is at least 1 wt% and at most 5 wt% of the textile. At least 1 wt% of active ingredient is required on the fabric for good antibacterial and virus-inhibiting effect, while more than 5 wt% of active ingredient does not result in higher antibacterial and virus-inhibiting effect.

The active ingredient is preferably at least 2 wt% of the textile, more preferably at least 2.5 wt%, even more preferably at least 3 wt%, even more preferably at least 3.5 wt% and most preferably at least 4 wt%.

The active ingredient is preferably at most 4.5 wt% of the textile.

According to a preferred embodiment, the antibacterial and virus-inhibiting coating comprises an aqueous, aliphatic polyester polyurethane dispersion as a binder. This is a white, milky dispersion. The aliphatic polyester polyurethane dispersion has good adhesion properties on textiles, preferably textiles comprising synthetic yarns. The aliphatic polyester polyurethane dispersion forms a strong coating on textiles, making it particularly advantageous for the durable application of the antibacterial and virusinhibiting coating to textiles. A coating based on an aliphatic polyester polyurethane dispersion as a binder has good resistance to washing and dry cleaning. The antibacterial and virus-inhibiting coating will not wear off the textile quickly or be rinsed off the textile during washing, which is particularly advantageous for an interior textile. An aliphatic polyester polyurethane dispersion is preferably free of N- methylene-2-pyrrolidone and of formaldehyde. An aliphatic polyester polyurethane dispersion is not prone to yellowing, which is advantageous when applied to textiles, especially white textiles.

In a preferred embodiment, the antibacterial and virus-inhibiting coating comprises a nonionic dispersant. The nonionic dispersant avoids the precipitation of cationic and anionic components in the antibacterial and virus-inhibiting coating. This allows a cationic antibacterial and virus-inhibiting substance to be combined with an anionic binder in the antibacterial and virus-inhibiting coating without losing the antibacterial activity as the cationic antibacterial and virus-inhibiting substance and the anionic binder react and precipitate. This is particularly advantageous in combination with previously described embodiments wherein the antibacterial and virus-inhibiting coating comprises at least as active ingredient molecules of dimethyloctadecyl[3(trimethoxysilyl)propyl]ammonium chloride, which is a cationic antibacterial and virus-inhibiting substance, and wherein the antibacterial and virusinhibiting coating comprises an aqueous, aliphatic polyester polyurethane dispersion as a binder, which is an anionic binder.

The nonionic dispersant is a preparation of fatty alcohol ethoxylates. A fatty alcohol is an aliphatic alcohol. Fatty alcohols are made from vegetable and animal fats and waxes. Fatty alcohols are suitable as solvents. Fatty alcohol ethoxylate is produced by polymerizing ethylene oxide with alcohol as the initiator. Fatty alcohol ethoxylates are resistant to acids and bases and are suitable for making an emulsion in a very acidic or very basic environment. Due to their properties, fatty alcohol ethoxylates are suitable for preventing a cationic antibacterial and virus-inhibiting substance and an anionic binder from reacting and precipitating. Fatty alcohol ethoxylates are not harmful to the skin and are therefore very suitable in an antibacterial and virusinhibiting coating on textiles.

According to a preferred embodiment, the antibacterial and virus-inhibiting coating comprises a fire-retardant organophosphorus-nitrogen compound. This is advantageous because the antibacterial and virus-inhibiting coating on textiles not only has an antibacterial and virus-inhibiting effect, but also a fire-retardant effect. This is particularly advantageous for interior textiles, e.g., interior textiles used in hotels, commercial buildings and office buildings, where fire retardancy is often also required. Both activities are applied simultaneously with a single coating, which means that no additional production steps are required.

The fire-retardant organophosphorus-nitrogen compound is slightly cationic. This is advantageous because it prevents the fire-retardant organophosphorus-nitrogen compound from reacting with cationic antibacterial and virus-inhibiting substances, such as molecules of dimethyloctadecyl[3(trimethoxysilyl)propyl]ammonium chloride as in previously described embodiments. This means that the fire-retardant organophosphorus-nitrogen compound and cationic antibacterial and virus-inhibiting substances do not reduce or neutralize each other's effect.

This embodiment is particularly advantageous in combination with a previously described embodiment with a nonionic dispersant. Due to the nonionic dispersant, the fire-retardant organophosphorus-nitrogen compound also does not react with an anionic binder, such as an aqueous aliphatic polyester polyurethane dispersion as in previously described embodiments.

The fire-retardant organophosphorus-nitrogen compound is not prone to yellowing, which is advantageous when applied to textiles, especially white textiles.

In a preferred embodiment, the antibacterial and virus-inhibiting coating comprises a cationic aqueous dispersion of reactive polymers.

A cationic aqueous dispersion of reactive polymers is advantageous for efficient dispersion of a cationic antibacterial and virus-inhibiting substance in the antibacterial and virus-inhibiting coating. This enhances the virus-inhibiting effect of a cationic antibacterial and virus-inhibiting substance. The cationic aqueous dispersion is particularly advantageous against viruses having a viral envelope or viral sheath, such as, for example, SARS coronavirus, influenza virus, Ebola virus, West Nile virus and Covid-19. The cationic aqueous dispersion optimally orients molecules in a cationic antibacterial and virus-inhibiting substance so that they highly effectively puncture the viral envelope or viral sheath, thereby destroying the virus. It is also advantageous that the aqueous dispersion of reactive polymers is cationic. As a result, the aqueous dispersion of reactive polymers attracts viruses with a negatively charged viral envelope and thus also to the active ingredient.

The cationic aqueous dispersion of reactive polymers will not react and precipitate with a cationic antibacterial substance in the antibacterial and virus-inhibiting coating.

According to a further embodiment, the cationic aqueous dispersion of reactive polymers is present in the antibacterial and virus-inhibiting coating in a weight ratio of 1.1: 1 to 0.9: 1 to the active ingredient.

According to a preferred embodiment, the antibacterial and virus-inhibiting coating on the textile has a weight of at least 20 g/m 2 and at most 130 g/m 2 . A minimum weight of 20 g/m 2 is required for a durable coating, which is wear-resistant and washable, and which has a good antibacterial and virus-inhibiting effect and possibly a good fire-retardant effect. With a weight greater than 130 g/m 2 , there is not necessarily a better antibacterial and virus-inhibiting effect, and the textile becomes unnecessarily heavy.

In one embodiment, the antibacterial and virus-inhibiting coating is a mixture based on water, binder, nonionic dispersant, fire retardant organophosphorus-nitrogen compounds and active ingredients for antibacterial and virus-inhibiting effect. These components are as in previously described embodiments.

At least 30 wt% and at most 45 wt% of binder is present in the mixture. At least 0.10 wt% and at most 3.0 wt% nonionic dispersant is present in the mixture, preferably at most 2.0 wt%, more preferably at most 1.0 wt%, even more preferably at most 0.5 wt% and even more preferably at most 0.3 wt%. At least 25 wt% and at most 35 wt% fire-retardant organophosphorus-nitrogen compounds are present in the mixture. At least 1 wt% and at most 5 wt% of active ingredients for antibacterial and virus-inhibiting effect are present in the mixture. The weight percentages are relative to the total weight of the mixture.

The active ingredients are preferably at least 2 wt% of the mixture, more preferably at least 2.5 wt%, even more preferably at least 3 wt%, even more preferably at least 3.5 wt% and most preferably at least 4 wt%. The active ingredients are preferably at most 4.5 wt% of the mixture.

In a further embodiment, the mixture also comprises a cationic aqueous dispersion of reactive polymers, wherein the cationic aqueous dispersion of reactive polymers is present in the mixture in a weight ratio of 1.1: 1 to 0.9: 1 to the active ingredients.

In a preferred embodiment, the warp yarns are made of polyester. This is advantageous for adhering the antibacterial and virus-inhibiting coating to the textile. The warp yarns can be either filaments or spun yarns.

There are at least 10 and at most 70 warp yarns per cm in the textile. This makes the textile suitable for both light and air-permeable applications, such as a roller blind, pull-up blind, pleated blind or slatted blind, as well as heavy-duty applications such as sun-resistant or blackout roller blinds, pull-up blinds, pleated blinds or slatted blinds, wall coverings and carpets. Preferably light applications have up to 25 warp yarns per cm.

According to a preferred embodiment, weft yarns are made of polyester or a composition of polyester with viscose, acrylic, flax and/or cotton. Polyester is advantageous for adhering the antibacterial and virus-inhibiting coating to the textile. The weft yarns can be filaments, spun yarns, chenille yarns and composite yarns.

There are at least 5 and at most 35 weft yarns per cm in the textile.

According to a preferred embodiment, the warp yarns have a yarn count of at least 50 dtex and at most 350 dtex. As a result, the warp yarns have sufficient thickness for a sturdy textile, even as a carpet, while the textile is sufficiently light for use as wall coverings or as roller blind, pull-up blind, pleated blind or slatted blind.

According to a preferred embodiment, the weft yarns have a yarn count of at least 60 dtex and at most 5000 dtex. Preferably, the weft yarns have a yarn count of at most 4000 dtex, more preferably at most 3000 dtex. As a result, the warp yarns have sufficient thickness for a sturdy textile, even as a carpet.

According to a further embodiment, the weft yarns have a yarn number of at least 150 dtex and at most 5000 dtex, whereby in the textile there are at most 26 weft yarns per cm. This is advantageous for a sturdy textile, while the limited number of weft yarns still results in a light and air-permeable textile, suitable as a roller blind, pull-up blind, pleated blind or slatted blind or as wall covering. The textile is also still suitable as a carpet.

According to one embodiment, the textile is woven on a Jacquard loom. A Jacquard loom is particularly suitable for applying a complex motif or design in a fabric.

In one embodiment, the textile is woven on a Dobby loom. A Dobby loom is suitable for motifs or designs of moderate complexity, for which several weaving frames are moved in an alternating pattern between two wefts.

In one embodiment, the fabric is woven on a loom with facilities for applying a leno weave. In a leno weave, two adjacent warp threads are twisted between two wefts in order to obtain a better weave of a weft thread between the two adjacent warp threads. This is particularly advantageous in fabrics where a translucent effect is desired, for example due to a small number of weft yarns per cm.

In a second aspect, the invention relates to a roller blind, pull-up blind, pleated blind or slatted blind.

According to a preferred embodiment, a roller blind comprises a roll-up mechanism and a roll-up textile. The roll-up mechanism comprises a roller around which the textile can be rolled up. The roll-up mechanism optionally comprises an electrically powered motor configured to rotate the roller.

The textile is a textile according to the first aspect.

The main advantage of a roller blind, pull-up blind, pleated blind or slatted blind according to the present invention is that the textile is treated with an antibacterial and virus-inhibiting coating. A roller blind, pull-up blind, pleated blind or slatted blind is placed near a window as a curtain or blind. A window can be opened for ventilation, as a result of which an air stream flows along or through the roller blind, pull-up blind, pleated blind or slatted blind. Viruses that float through a room in an aerosol, for example, can be carried along with the air stream to the roller blind, pull-up blind, pleated blind or slatted blind, and the virus-inhibiting effect of the textile greatly reduces the number of viruses in the room. Another possibility is that the roller blind, pull-up blind, pleated blind or slatted blind is used as a room divider. As a result, a larger space can be divided into bubbles with the help of roller blinds, pull-up blinds, pleated blinds or slatted blinds. The roller blinds, pull-up blinds, pleated blinds or slatted blinds are advantageous for that purpose compared to plexiglass screens because roller blinds, pull-up blinds, pleated blinds or slatted blinds can still be air permeable, which creates a better living and working environment in a bubble, and which promotes communication with a person in a bubble. The air permeability is also advantageous because it creates an air stream towards the roller blind, pull-up blind, pleated blind or slatted blind, so that the number of viruses in a bubble is actively reduced. This is not the case with bubbles that are separated from the room by plexiglass screens.

In a third aspect, the invention relates to a wall covering.

According to a preferred embodiment, the wall covering comprises a textile. The textile has two sides, of which a first side is a visible surface. The visible surface is intended to face a space in which the wall covering is attached to a wall and thus is visible to persons in the room. The opposite second side is intended to be attached to a wall. Optionally, the wall covering comprises on the second side a coating for promoting adhesion of the wall covering to a wall by means of adhesive. Optionally, the wall covering on the second side comprises an adhesive layer for adhesion of the wall covering to a wall. Optionally, the wall covering comprises on the second side an underlayer, such as for instance a fleece, for promoting adhesion of the wall covering to a wall by means of adhesive.

Wall coverings form large surfaces within buildings. Viruses floating around in an aerosol within buildings have a high chance of coming into contact with a wall covering sooner or later. Because the visible surface is treated with an antibacterial and virus-inhibiting coating, these viruses will be greatly reduced in number, which is advantageous for slowing down the spread of viruses within buildings.

In a fourth aspect, the invention relates to a carpet.

According to a preferred embodiment, the carpet comprises a textile. The textile has two sides, of which a first side is a walking surface. The walking surface is intended to be walked on by people in a room. The opposite second side is intended to be placed on a floor surface in the room. Optionally, the carpet on the second side comprises an underlay for improving a dimensional stability of the carpet, such as a fleece. This underlay can also improve the carpet's acoustic properties. Optionally, the carpet comprises an anti-slip layer, such as for instance a rubber layer. The antislip layer can be applied directly to the textile, or it can be combined with an intermediate underlay.

Viruses floating around in an aerosol within buildings can end up on the floor surface over time. A carpet according to the present invention is advantageous for inhibiting the spread of these viruses within buildings, because the walking surface of the carpet is treated with an antibacterial and virus-inhibiting coating, whereby the viruses are greatly reduced in number.