DE102017205897A1 - Needled flooring - Google Patents

Abstract

The present invention relates to: - a needle-punched floor covering having at least one wear layer of more than 70 wt .-% polyamide fibers, wherein at least 50 wt .-% of the polyamide fibers used a water absorption of less than 2.0% according to DIN EN ISO 62 (method 4), and - a method for resealable laying of a needled nonwoven flooring with at least one wear layer of more than 70 wt .-% polyamide fibers, wherein at least 50 wt .-% of the polyamide fibers used a water absorption of less than 2.0% according to DIN EN ISO 62 (method 4), wherein the floor covering is loosely laid with a seam tape or wiederaufnehmbar with a slip brake or an adhesive fixation, and - the at least proportionate use of polyamide fibers according to the invention for producing a wear layer of a needled floor covering.

Description

FIELD OF THE INVENTION

The present invention relates generally to needle-punched floor coverings, to methods of laying such as well as to the (at least proportionate) use of defined polyamide fibers to produce a wear layer of a needle-punched floor covering.

• – aufweisend wenigstens eine Nutzschicht, welche mehr als 40 Gew.-%, vorzugsweise mehr als 50 Gew.-%, mehr bevorzugt 95 Gew.-%, oder gar sämtlich, Polyamid-Fasern mit einer Wasseraufnahme von unter 2,0% nach DIN EN ISO 62 (Verfahren 4) aufweist.

One aspect relates to needle-punched floor coverings

• Having at least one wear layer which contains more than 40% by weight, preferably more than 50% by weight, more preferably 95% by weight, or even all, of polyamide fibers having a water absorption of less than 2.0% DIN EN ISO 62 (method 4) having.

The invention also relates to a method for resealable laying of needle-punched floor coverings, as well as the use of the polyamide fiber according to the invention for producing a wear layer for needle-punched floor coverings.

The present invention also relates to needled floor coverings comprising at least one wear layer of more than 70 wt .-% polyamide fibers, wherein at least 50 wt .-% of the polyamide fibers used a water absorption of less than 2.0% after DIN EN ISO 62 (method 4) exhibit.

BACKGROUND OF THE INVENTION

Needle nonwovens are basically known from the prior art. Typically, this is from a staple fiber, or a staple fiber mixture, u. a. By carding a single or multi-ply web formed, which is solidified by a subsequent needling. The needling and the resulting structure is also a characteristic of the coating according to the invention

EP 0 285 338 A2 discloses a needle-punched fabric in which several different fiber materials are combined.

DE 41 06 295 A1 relates to a needle felt with a carrier fleece and a nonwoven needled thereon. Needle felt is described as a widely used material for floor and wall coverings.

In WO 2013/167408 A1 Carpets are disclosed comprising a wear layer of yarns or fibers and optionally a carrier. The fibers may be natural (eg, virgin wool, cotton) and / or synthetic (eg, polyamide, polyester, polypropylene). Preferably, the carpet material construction consists of PET fiber material with a high recycled content.

DE 195 12 603 C1 describes carpets made of plastic fibers and pile yarn made of polyamides, such as polyamide 6 (melting point 223 ° C, density 1.14 kg / m ³ , synthesis from ε-caprolactam) or polyamide 66 (mp 255-260 ° C, density 1 , 14 kg / m ³ , synthesis starting from hexamethylenediamine / adipic acid salts). The carpet backings are made of elastomers / rubbers, for example, latex, styrene-butadiene copolymers, polyurethane, ethylene-propylene-diene rubber, polyester, or polypropylene. For pigmentation of the fibers, Co, Cr or Cu complexes are often used.

Polyamide fibers can reversibly absorb or release (air) moisture. The water from the environment is incorporated in the amorphous regions of the polyamide. This results in a material-typical swelling or shrinkage behavior of the polyamide fiber.

Changes in the climatic conditions, in particular the (air) humidity and / or the (room) temperature, can therefore lead to undesirable dimensional changes, in particular shrinkage or waxing, of the nonwoven flooring containing the wear layer of polyamide fibers.

To counteract such dimensional changes needled nonwoven floor coverings in roll form with a wear layer, which has a high proportion of hitherto conventional polyamide fibers (especially polyamide 6 and polyamide 6.6 fibers), glued with high shear adhesives permanently and over the entire surface of the substrate or the support surface become.

The laying and replacement of such a needle felt flooring are therefore associated with high time and cost.

Needle felt floor coverings in modular form are usually laid resumable.

Due to the described dimensional changes of hitherto customary polyamide fibers (in particular polyamide 6 and polyamide 6.6 fibers) due to moisture absorption or release due to climatic changes needle felt floor coverings in module form no wear layer with a polyamide content of more than 70 wt .-% , In addition, previously used modules require a heavy coating in order to ensure optimal lying behavior and dimensional stability. However, such a heavy coating leads to an increase in the cost of flooring and can, Depending on the condition, lead to the entry of undesirable substances in the floor covering. This disadvantage is given, for example, in the frequently used bituminous heavy coatings. Here it comes to the entry of polycyclic aromatic hydrocarbons (PAH problem).

OBJECT OF THE INVENTION

Starting from this prior art, it is an object of the present invention to provide a needle-punched floor covering, for example, in roll or modular form, the loose, d. H. without the use of adhesives (gluing), and / or, if in modular form, can be resumed without heavy coating.

SUMMARY OF THE INVENTION

This object is achieved according to one aspect of the invention by a needled nonwoven flooring, comprising at least one wear layer, which more than 40 wt .-%, preferably more than 50 wt .-%, more preferably 95 wt .-%, or even all polyamide Fibers with a water absorption of less than 2.0% after DIN EN ISO 62 (method 4) having. The features of claims 15 and 16 provide a method for resealable laying of a needle-punched floor covering according to the invention and the use of polyamide fibers according to the invention for producing a wear layer for needle-punched floor coverings.

This object is also achieved by a needled nonwoven flooring, comprising at least one wear layer of more than 70 wt .-% polyamide fibers, wherein at least 50 wt .-% of the polyamide fibers used a water absorption of less than 2.0% after DIN EN ISO 62 (method 4) exhibit.

The dependent claims further form the central idea of the invention in a particularly advantageous manner.

Surprisingly, it has been found that a needle-punched floor covering having at least one wear layer which contains more than 40% by weight, preferably more than 50% by weight, more preferably 95% by weight, or even all polyamide fibers having a water absorption of less than 2 , 0% after DIN EN ISO 62 (method 4) has, in roll form, loose with a seam band, and resumable in modular form, preferably using a slip brake or adhesive fixation, and can be laid without the use of a heavy coating.

Surprisingly, it was also found that a needle-punched floor covering having at least one wear layer of more than 70 wt .-% polyamide fibers, wherein at least 50 wt .-% of the polyamide fibers used a water absorption of less than 2.0% DIN EN ISO 62 (method 4) in roll form, loose with a seam band, and resumable in modular form, preferably using a slip brake or adhesive fixation, and can be laid without the use of a heavy coating.

Loose or resealable deployable needle-punched floor coverings having at least one wear layer of more than 70 wt .-% polyamide fibers, wherein at least 50 wt .-% of the polyamide fibers used a water absorption of less than 2.0% after DIN EN ISO 62 (method 4) have, are not yet known.

The needle-punched floor covering according to the invention preferably has no heavy coating.

The needled nonwoven floor covering according to the invention preferably comprises at least one carrier layer on the base layer facing away from the useful side.

Advantageously, the carrier layer comprises polypropylene, polyester or polyethylene or mixtures thereof. Further advantageously, the carrier layer is a thread system consisting of polyester, polypropylene or polyethylene or mixtures thereof.

Further preferably, the needled nonwoven flooring according to the invention comprises at least one backing layer on the base layer facing away from the useful side.

The backing layer preferably comprises polyethylene, polypropylene or polyester or mixtures thereof.

Advantageously, back layer and carrier layer of the needled nonwoven floor covering according to the invention together form the base layer facing away from the wear layer DIN ISO 2424 ,

Advantageously, the ratio of the wear layer comprising more than 40 wt .-%, preferably more than 50 wt .-%, more preferably 95 wt .-%, or even all polyamide fibers with a water absorption of less than 2.0% after DIN EN ISO 62 (method 4) to the base layer in a range of 5: 1 to 0.5: 1.

Further advantageous is the ratio of the wear layer, comprising more than 70 wt .-% polyamide fibers, wherein at least 50 wt .-% of the polyamide fibers used a water absorption of less than 2.0% after DIN EN ISO 62 (method 4) to the base layer in a range of 5: 1 to 0.2: 1.

Advantageously, the needled nonwoven flooring according to the invention has a latex finish.

The needle-punched floor covering according to the present invention may be in roll or modular form.

In particular, a needle-punched floor covering is proposed which has at least one wear layer of more than 40% by weight, preferably more than 50% by weight, more preferably 70% by weight, more preferably 95% by weight, or even 100%. comprising the polyamide fibers according to the invention and in roll form has at least one seam band on the base layer facing away from the useful side.

Advantageously, the needled nonwoven flooring according to the invention can be laid loosely with a seam band.

The seam tape connects or glues the needle-fleece flooring sheets adjacent to each other during laying back together, without any of the resealable, loose installation opposite bonding is given to the ground.

Preferably, the needle-punched floor covering according to the invention is resumable in module form and can be laid without the use of a heavy-duty coating.

Advantageously, the needle-punched floor covering according to the invention can be resuspended in modular form, preferably using a slip brake or adhesive fixation, and without using a heavy-duty coating.

According to a further aspect of the present invention, there is provided a method of resealable laying of a needle-punched floor covering, wherein a needle-punched floor covering according to the invention is laid such that no bonding opposite to a resealable laying is used.

According to a further aspect of the present invention, the at least partial use of a polyamide fiber with a water absorption of less than 2.0% is after DIN EN ISO 62 (method 4) proposed for the production of the wear layer of a needle-punched floor covering according to the invention.

Advantageously, the polymer of the polyamide fiber according to the invention is up to 50%, preferably up to 100%, recovered from renewable raw materials.

In a preferred embodiment, the polyamide fiber according to the invention with a water absorption of less than 2% after DIN EN ISO 62 (method 4) used for the production of the wear layer of a needled nonwoven flooring according to the invention, in order to reduce so-called. Aufschüsselungen and unwanted dimensional changes, in particular with changes in the climatic conditions after its installation or in the subsequent use.

Both forms of presentation, roll form and modular form, show after laying and in the subsequent use of a perfect lying behavior without Aufschüsselungen or dimensional changes.

BRIEF DESCRIPTION OF THE FIGURES

1 shows a schematic representation of a cross section through a needle-fleece flooring according to the invention 1 ,

2 shows a schematic representation of a needle-punched floor covering according to the invention 1 in module form.

3 shows a schematic representation of the base layer facing away from the wear layer 5 , which corresponds to the laying side, with a seam tape 6 in the case of two contiguous needle-fleece flooring sheets according to the invention 7 . 8th ,

DETAILED DESCRIPTION

The present invention provides needle-punched floor coverings comprising at least one wear layer which is greater than 40% by weight, preferably greater than 50% by weight, more preferably 75% by weight, more preferably 95% by weight, or even all polyamide fibers with a water absorption of less than 2.0% after DIN EN ISO 62 (method 4) having.

The proportion of other fibers, in particular of other polyamide fibers, may be 0 to 5% by weight, 25% by weight, 50% by weight or 60% by weight.

The present invention also provides loose or resealable needle-punched floor coverings, comprising at least one wear layer of more than 70% by weight of polyamide fibers, wherein at least 50% by weight of the polyamide fibers used have a water absorption of less than 2.0 % to DIN EN ISO 62 (method 4) exhibit.

Nonwoven fabric in the sense of the present invention means a fabric consisting mainly of fibers, continuous fibers (filaments) or sliced yarns of any kind and of any origin, which have in some way been assembled into a fibrous web and bonded together, with the exception of weaving, knitting, knitting, lace making, braiding and the manufacture of tufted products.

Needle nonwovens according to the present invention are needle punched nonwoven fibrous webs. In particular, from a staple fiber, or a staple fiber mixture, u. a. By carding a single or multi-ply web formed, which is solidified by a subsequent needling.

Floor covering for the purposes of the present invention means the floor covering and includes textile floor coverings such as carpeting and non-textile floor coverings such as plastic coverings, laminate flooring, parquet or ceramic tiles.

Polyamides (PA) are linear thermoplastic polymers with regularly repeating amide bonds along the chain molecular structure. Amide groups are compounds of carbon and oxygen with nitrogen and hydrogen atoms (-NH-CO). They can be understood as the condensation product of a carboxylic acid and an amine.

Amide groups form strong bridges to adjacent molecular chains and are responsible for the mechanical and thermal properties of the polyamides. For example, good chemical resistance to organic solvents. The lower the proportion of amide groups relative to the second important building block, the methylene groups (-CH ₂ -), the lower the moisture absorption.

In the present invention, a highly durable polyamide fiber is used in the wear layer of the needle-punched floor covering, which is in the physical properties, in particular with regard to the maximum moisture absorption or output of previously used in needle-punched floor coverings polyamide fibers, in particular Polyamide 6 and polyamide 6.6, differs.

The polyamide fiber according to the invention is characterized by a water absorption of less than 2.0% DIN EN ISO 62 (method 4) characterized.

The water absorption of the polymer is measured according to DIN EN ISO 62 (method 4) after 24 ± 1 h storage period at a relative humidity of 50 ± 5% and a temperature of 23 ± 1 ° C.

An inventive needle felt flooring has at least one wear layer, wherein the wear layer more than 40 wt .-%, preferably more than 50 wt .-%, more preferably 95 wt .-%, or even all polyamide fibers with a water absorption of below 2.0%, preferably 0.5% to 1.5%, particularly preferably 1.0%, after DIN EN ISO 62 (method 4) , having.

Another inventive needle felt flooring has at least one wear layer of more than 70 wt .-% polyamide fibers, wherein at least 50 wt .-% of the polyamide fibers used a water absorption of less than 2.0%, preferably 0.5% to 1.5%, more preferably 1.0%, after DIN EN ISO 62 (method 4) , exhibit.

Due to the low moisture absorption of the polyamide fiber used according to the invention, at least proportionally unwanted dimensional changes such as shrinkage or waxing, which can occur, for example due to climatic changes, prevented or minimized.

For this reason, it is possible to dispense with a permanent and full-surface bonding of the needle-punched nonwoven flooring according to the invention with high-shear-strength adhesives.

The needled nonwoven flooring according to the invention can be laid in roll form loosely with a seam tape, in particular without full-surface bonding.

Preferably, a dimensionally stable seam tape having a width of 30-50 cm is used in the form of presentation roll to connect or glue the nonwoven floorcovering webs adjoining one another during installation without any bonding to the substrate which resists resumption of loose laying given is.

In modular form, the laying of the needle-punched floor covering according to the invention is resumable, preferably using a slip brake or adhesive fixation, and without the use of a heavy coating on the substrate.

In a preferred embodiment, the needle-punched floor covering according to the invention has at least one wear layer, the wear layer being more than 40% by weight or 50% by weight, more than 95% by weight, preferably more than 98% by weight, especially preferably 100 wt .-% polyamide fibers having a water absorption of less than 2.0%, preferably 0.5% to 1.5%, particularly preferably 1.0%, after DIN EN ISO 62 (method 4) having.

In a further preferred embodiment, the needled nonwoven floor covering according to the invention comprises at least one wear layer of more than 70 wt .-% polyamide fibers, wherein more than 50 wt .-%, preferably more than 75 wt .-%, particularly preferably 100 wt. -% of the polyamide fibers used a water absorption of less than 2.0%, preferably 0.5% to 1.5%, particularly preferably 1.0%, after DIN EN ISO 62 (method 4) exhibit.

The wear layer particularly preferably consists of 100% by weight of the polyamide fiber according to the invention and contains no admixtures of other polyamides not according to the invention and / or less durable polypropylene and / or less durable polyester.

The needled nonwoven flooring of the present invention exhibits improved wear / resistance over needled nonwoven floor coverings having wear layers comprising polypropylene and / or polyester fiber blends. The wear layer according to the invention is characterized by high abrasion properties. The polyamide fiber according to the invention is abrasion-resistant, like the polyamide fibers based on PA 6 or PA 6.6 customary for needle-punched floor coverings. Furthermore, the polyamide fiber according to the invention is characterized by minimal moisture absorption.

The polyamide fiber used at least proportionally according to the invention is characterized by a significantly lower water absorption in comparison to PA 6 and PA 6.6. It can be obtained at least partially from renewable raw materials such as castor oil. Particularly preferably, the polymer underlying the polyamide fiber of the invention can be obtained up to 100% from renewable raw materials such as castor oil. Advantageously, renewable or recycled raw materials are predominantly used in the needled nonwoven floor covering according to the invention.

The polymer which is the basis of the polyamide fiber used at least proportionally according to the invention can be obtained by polycondensation of an aliphatic dicarboxylic acid, for example decanedioic acid. with an aliphatic diamine such as 1,10-decanediamine. At least the said dicarboxylic acid can be obtained both synthetically and from renewable raw materials such as castor oil.

In a second embodiment, the polymer underlying the polyamide fiber according to the invention can be obtained by polycondensation of ω-aminocarboxylic acids, for example 11-aminoundecanoic acid. 11-aminoundecanoic acid can be obtained both synthetically and from renewable raw materials (castor oil).

In a third embodiment, the polymer underlying the polyamide fiber according to the invention can be obtained by ring-opening polymerization of lactams, for example λ-laurolactam.

The polyamide according to the invention of the two first-mentioned embodiments has improved CO ₂ in comparison to polyamides previously used in needle-punched floor coverings, in particular polyamide 6 and polyamide 6.6, which are produced from synthetic ε-caprolactam or synthetic 1,6-hexanediamine and hexanedioic acid Balance (carbon footprint).

The CO ₂ emissions (carbon footprint) is the total amount of carbon dioxide emissions (measured in CO ₂ equivalents) of which is caused directly and indirectly by an activity or is produced over the life of a product.

The water absorption of the at least partially used polyamide according to the invention is between 0.5 and 2.0%, measured according to DIN EN ISO 62 (method 4) after 24 ± 1 h storage period at a relative humidity of 50 ± 5% and a temperature of 23 ± 1 ° C.

Advantageously, the needled nonwoven floor covering according to the invention can be laid in a roll form due to the nature of the wear layer without bonding and can be resumed in a cost-effective manner and with a significantly reduced expenditure of time. Preferably, the needled nonwoven flooring according to the invention can be laid loosely in roll form without gluing. Particularly preferably, the needle-punched floor covering according to the invention can be laid in roll form resumable, loose and using a seam tape.

Advantageously, the needled nonwoven flooring according to the invention can be laid in module form due to the low water absorption of the wear layer wiederaufnehmbar and without the use of a heavy coating. Preferably, the needled nonwoven flooring of the invention can be relocated in modular form using a slip brake or adhesive brake and without the use of a heavy coating.

For the purposes of the present invention, heavy coatings mean a heavy-duty rear coating of the needle-punched non-woven floor covering with layers based on, for example, bitumen, EVA, polyurethane or polyolefin. The PAH problem (PAK = polycyclic aromatic Hydrocarbons) in the commonly used bituminous heavy coatings is well known.

Modular form in the sense of the present invention may mean tiles with a length of for example 50 cm and a width of for example 50 cm or planks in with a length of for example 100 cm and a width of for example 20 cm.

In 1 schematically is the cross section through a needle felt flooring according to the invention 1 shown. According to one embodiment, the needle-punched floor covering according to the invention may be a wear layer 2 from more than 95 wt .-% polyamide fibers with a water absorption of less than 2.0% after DIN EN ISO 62 (method 4) a carrier layer 3 , as well as a back layer 4 exhibit. backing 4 and carrier layer 3 together form the base layer 5 which represents the laying side facing away from the useful side.

According to a further embodiment, the needled nonwoven flooring according to the invention, a wear layer 2 from more than 70 wt .-% polyamide fibers, wherein at least 50 wt .-% of the polyamide fibers used a water absorption of less than 2.0% after DIN EN ISO 62 (method 4) have a carrier layer 3 , as well as a back layer 4 exhibit.

Preferably, the carrier layer comprises 3 Polypropylene, polyethylene or polyester and mixtures thereof. More preferably, the backsheet comprises 4 Polyester, polyethylene or polypropylene and mixtures thereof.

In a preferred embodiment, the needled nonwoven floor covering according to the invention is a multilayer covering of Type A2 and / or A3 according to DIN EN 1307, chapter 3.5 , The needle-punched floor covering preferably has a base layer 5 made of synthetic needle felt, made up of a backsheet 4 for example, polyester and a carrier layer 3 , preferably composed of an integrated thread system of polypropylene or polyester.

In 2 is an embodiment of the needle-punched floor covering according to the invention 1 in modular form with a wear layer 2 made of more than 95 wt .-% polyamide fibers with a water absorption after DIN EN ISO 62 (method 4) of less than 2.0%, a backing layer 3 , as well as a back layer 4 shown. backing 4 and carrier layer 3 together form the base layer 5 which represents the laying side facing away from the useful side.

The needled nonwoven flooring according to the invention 1 in modular form can also have a wear layer 2 from more than 70 wt .-% polyamide fibers, wherein at least 50 wt .-% of the polyamide fibers used after a water absorption DIN EN ISO 62 (method 4) of less than 2.0%, a carrier layer 3 , as well as a back layer 4 ,

The ratio of wear layer 2 to base layer 5 may vary. Preferably, the ratio of the wear layer is 2 to the base layer 5 in a range of 5: 1 to 0.2: 1 or 0.5: 1. Further preferably, wear layer 2 and base layer 5 in a ratio of 2: 1 to 1: 1 before, more preferably in a ratio of 1.8: 1.2 to 1: 1, particularly preferably in a ratio of 1.6: 1.3 to 1: 1.

The needled nonwoven flooring according to the invention advantageously comprises a latex finish.

The latex finish enhances the high abrasion resistance of the needled nonwoven flooring of the present invention.

According to an advantageous embodiment, a dimensionally stable seam tape, preferably with a width of 20 cm to 60 cm, more preferably with a width of 30 cm to 50 cm, proposed for the needled nonwoven flooring in roll form according to the invention to meet the abutting when laying, according to the invention To connect needled non-woven floor coverings back together and / or gluing, without any of the resumable, loose installation opposite bonding is given to the ground.

3 shows the base layer facing away from the useful side 5 which corresponds to the laying side, being a seam tape 6 on the seam area of abutting first and second needle-punched flooring sheets 7 . 8th is glued. By using a seam tape not bonded to the substrate 6 becomes an optimal seam pattern of abutting first and second needle-punched flooring sheets 7 . 8th achieved.

For the purposes of the present invention, the seam area is the area where two laid floor covering webs / rolls or two modules of the needle felt floor covering according to the invention adjoin one another.

Optimal seam pattern in the sense of the present invention means that seams between the loosely laid rolls connected to a seam strip or the individual modules of the needle-punched floorcovering that are resealable with a slip brake or adhesive fixation are minimally visible after it has been laid. Particularly preferred are no seams visible.

A seam tape according to the present invention, which is used exclusively for the presentation roll, is a separate, dimensionally stable sheet in a width of preferably 30 to 50 cm. It consists for example of polyester, polypropylene, polyethylene and / or combinations thereof.

The seam tape is used in order to connect or glue together the needle-fleece floorcovering webs according to the invention that butt against one another during installation.

In addition, an undesirable joint formation, that is the formation of a visible gap in the seam area is prevented. To the ground there is no connection in the form of a bond, that is, the flooring sheets are indeed connected or glued together, but are loose and are wiederaufnehmbar.

The needled nonwoven floor covering according to the invention can be in roll or modular form. Roll form means that the needle-punched floor covering is in one piece, while the floor covering in modular form can be in the form of tiles or planks, for example.

According to a second aspect of the present invention, a method for resealable laying of a needle-punched floor covering according to the invention is provided, wherein the floor covering is laid without full-surface bonding.

Resumable in the sense of the present invention means that no firm, bonding of the floor covering takes place with the substrate.

Advantageously, the needle felt flooring can be replaced with little time and cost, or the original state can be restored.

Thus, areas that are used for a limited time, such as rental properties, sales rooms, exhibitions and trade fairs, can be covered with the needled nonwoven flooring according to the invention.

In order to ensure an optimal seam pattern, the use of a seam tape is provided in the resealable laying in roll form of the needle-punched floor covering according to the invention.

In the design form module, the laying is resumable and without using a heavy coating. Preferably, the laying can be done in modular form using a slip brake or adhesive fixation.

According to a third aspect of the present invention, the at least proportional use of a polyamide fiber with a significantly lower water absorption compared to PA 6 and PA 6.6 for the production of the wear layer of a needle-punched floor covering according to the invention is proposed.

The polyamide fiber according to the invention can be obtained at least partially from renewable raw materials (castor oil). With particular preference, it can be obtained up to 100% from renewable raw materials (castor oil).

An inventive needled nonwoven flooring having a wear layer comprising more than 40 wt .-%, 50 wt .-% or 95 wt .-% polyamide, preferably more than 98 wt .-% polyamide, particularly preferably 100 wt .-% polyamide, draws characterized by significantly reduced water absorption and thus advantageous lying behavior. In particular, the use of polyamide according to the invention in the production of the wear layer leads to a loosely or resealable deployable needle felt flooring, wherein a full-surface, solid bonding with the ground is not provided.

Another inventive needled nonwoven flooring having a wear layer comprising more than 70 wt .-% polyamide, preferably more than 90 wt .-% polyamide, more preferably 100 wt .-% polyamide, characterized by significantly reduced water absorption and thus advantageous lying behavior. In particular, the use of polyamide according to the invention in the production of the wear layer leads to a highly durable, loosely or resealable laid needlepunch flooring, wherein a full-surface, solid bonding with the ground is not provided.

Another advantage of the reduced water absorption of the polyamide fiber according to the invention lies in the prevention or minimization of undesirable dimensional changes of the needled nonwoven flooring according to the invention after its laying or in the subsequent use in changes in climatic conditions. Advantageously Aufschüsselungen, that is convex or concave bulges of the laid flooring prevents.

LIST OF REFERENCE NUMBERS

1

Needled flooring

2

wear layer

3

backing

4

backing

5

base layer

6

seam tape

7

First needle-fleece flooring track

8th

Second needlepunch flooring track

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 0285338 A2 [0006]
• DE 4106295 A1 [0007]
• WO 2013/167408 A1 [0008]
• DE 19512603 C1 [0009]

Cited non-patent literature

• DIN EN ISO 62 (method 4) [0002]
• DIN EN ISO 62 (method 4) [0004]
• DIN EN ISO 62 (method 4) [0017]
• DIN EN ISO 62 (method 4) [0018]
• DIN EN ISO 62 (method 4) [0020]
• DIN EN ISO 62 (method 4) [0021]
• DIN EN ISO 62 (method 4) [0022]
• DIN ISO 2424 [0028]
• DIN EN ISO 62 (method 4) [0029]
• DIN EN ISO 62 (method 4) [0030]
• DIN EN ISO 62 (method 4) [0039]
• DIN EN ISO 62 (method 4) [0041]
• DIN EN ISO 62 (method 4) [0046]
• DIN EN ISO 62 (method 4) [0048]
• DIN EN ISO 62 (method 4) [0055]
• DIN EN ISO 62 (method 4) [0056]
• DIN EN ISO 62 (method 4) [0057]
• DIN EN ISO 62 (method 4) [0058]
• DIN EN ISO 62 (method 4) [0064]
• DIN EN ISO 62 (method 4) [0065]
• DIN EN ISO 62 (method 4) [0074]
• DIN EN ISO 62 (method 4) [0079]
• DIN EN ISO 62 (method 4) [0080]
• Type A2 and / or A3 according to DIN EN 1307, Chapter 3.5 [0082]
• DIN EN ISO 62 (method 4) [0083]
• DIN EN ISO 62 (method 4) [0084]

Claims (20)

Needle felt flooring ( 1 ), comprising at least one wear layer ( 2 ), wherein the wear layer ( 2 ) more than 40 wt .-%, preferably more than 50 wt .-%, more preferably 95 wt .-%, or even all polyamide fibers with a water absorption of less than 2.0% according to DIN EN ISO 62 (method 4) having. Needle felt flooring, comprising at least one wear layer of more than 70 wt .-% polyamide fibers, wherein at least 50 wt .-% of the polyamide fibers used have a water absorption of less than 2.0% according to DIN EN ISO 62 (Method 4) , Needle felt flooring ( 1 ) according to claim 1 or 2, wherein the needle-punched floor covering ( 1 ) has no heavy coating. Needle felt flooring ( 1 ) according to any one of the preceding claims, wherein the needle-punched floor covering ( 1 ) on the base layer facing away from the useful side ( 5 ) at least one carrier layer ( 3 ) having. Needle felt flooring ( 1 ) according to claim 4, wherein the needle-punched floor covering ( 1 ) on the base layer facing away from the useful side ( 5 ) at least one backsheet ( 4 ) having Needle felt flooring ( 1 ) according to claims 4 and 5, wherein the wear layer ( 2 ) remote base layer ( 5 ) at least from a carrier layer ( 3 ) and a backsheet ( 4 ). Needle felt flooring ( 1 ) according to claim 4 and 6, wherein the carrier layer ( 3 ) Polypropylene, polyester or polyethylene or mixtures thereof. Needle felt flooring ( 1 ) according to claim 5 and 6, wherein the back layer ( 4 ) Polypropylene, polyester or polyethylene or mixtures thereof. Needle felt flooring ( 1 ) according to one of the preceding claims, wherein the weight ratio of the wear layer ( 2 ) to the base layer ( 5 ) is in a range of 5: 1 to 0.5: 1. Needle felt flooring ( 1 ) according to one of the preceding claims, wherein the ratio of the wear layer ( 2 ) comprising more than 70 wt .-% polyamide fibers, wherein at least 50 wt .-% of the polyamide fibers used have a water absorption of less than 2.0% according to DIN EN ISO 62 (method 4), to the base layer ( 5 ) is in a range of 5: 1 to 0.2: 1. Needle felt flooring ( 1 ) according to any one of the preceding claims, wherein the needle-punched floor covering ( 1 ) further comprises a latex finish. Needle felt flooring ( 1 ) according to any one of the preceding claims, wherein the needle-punched floor covering ( 1 ) in role or module form. Needle felt flooring ( 1 ) according to any one of the preceding claims, wherein the needle-punched floor covering ( 1 ) in roll form on the base layer facing away from the useful side ( 5 ) at least one seam tape ( 6 ) having. Needle felt flooring ( 1 ) according to any one of the preceding claims, wherein the needle-punched floor covering ( 1 ) can be resumed in modular form and can be laid without the use of a heavy-duty coating. Method for resealable laying of a needle-punched floor covering ( 1 ), wherein a needle-punched floor covering ( 1 ) is laid according to one of the preceding claims such that no firm gluing contrary to a resumable laying is used. Use of a polyamide fiber with a water absorption of less than 2.0% according to DIN EN ISO 62 (method 4) for the production of the wear layer (US Pat. 2 ) of a needle-punched floor covering ( 1 ) according to one of claims 1 to 14. Use of a layer of more than 70 wt .-% polyamide fibers, wherein at least 50 wt .-% of the polyamide fibers used have a water absorption of less than 2.0% according to DIN EN ISO 62 (method 4), for the preparation of the wear layer ( 2 ) of a needle-punched floor covering ( 1 ). At least proportionate use of a polyamide fiber with a water absorption of less than 2.0% according to DIN EN ISO 62 (method 4) according to claim 16, wherein the fiber of the underlying polymer is recovered up to 100% from renewable resources. At least proportionate use of a polyamide fiber with a water absorption of less than 2.0% according to DIN EN ISO 62 (method 4) Reduction of slices and / or dimensional changes of a needle-punched floor covering ( 1 ) changes in climatic conditions after its laying and / or in the subsequent use. At least proportionate use of a layer of more than 70 wt .-% polyamide fibers, wherein at least 50 wt .-% of the polyamide fibers used have a water absorption of less than 2.0% according to DIN EN ISO 62 (Method 4), to reduce of widening and / or dimensional changes of a needle-punched floor covering ( 1 ) changes in climatic conditions after its laying and / or in the subsequent use.

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