DE202008016836U1 - Fleece backing - Google Patents

Abstract

fleece carpet backing comprising bicomponent fibers with core / sheath structure, wherein the Bicomponent fibers contain recycled polymers and dyes.

Description

The Invention a nonwoven carpet backing, comprising Fibers, the recycled polymers contain. The fibers are bicomponent fibers with core / shell structure, wherein the melting point of the shell polymer is lower than the melting point of the core polymer.

Nonwoven carpet backing will be used in carpet and carpet tile production and have the Task, the pile yarn during to keep the tufting process.

by virtue of The application in carpets is a uniform color of fleece carpet backing of Importance. Indicates the carpet backing no uniform coloration, This can also adversely affect the color of the tufted carpet.

by virtue of the requirement of a carpet backing, a uniform, homogeneous To show color come as raw materials so far only new and none recycled materials in question, since only from unused polymers Fibers can be produced with the required color consistency.

It is in principle not or at least hardly possible recycled, d. H. recycled raw materials for to use the production of nonwoven carpet backing as these Raw materials, dependent from their origin, can vary greatly in their coloring. Even though nothing against the use in terms of mechanical properties of recycled polymers for the production of fleece carpet backing speaks, These are not used for carpet backing because of the lack of color constancy.

task It is therefore the object of the present invention to overcome the disadvantages of the prior art At least reduce the technique and a fleece carpet back containing Recycling polymers, with constant, uniform coloring available for put

These Task is solved through a fleece carpet backing comprising bicomponent fibers with core / sheath structure, wherein the Bicomponent fibers contain recycled polymers and dyes.

Of the Term fiber includes linear Formations of one or more filaments, with the filaments can be present as continuous filaments or as staple fibers. Prefers The bicomponent fibers are present as endless filaments.

The Bicomponent fibers of the inventive carpet back can in Core or in the jacket, or in the core and in the jacket recycled polymers contain. Likewise the dyes in the core or in the mantle, or in the core and in the mantle available.

In a preferred embodiment contains the fleece carpet backing Bicomponent fibers, the core recycled polymers and the core Dyes contain.

In a further preferred embodiment contains the fleece carpet backing Bicomponent fibers used in the jacket recycled polymers and in the mantle Dyes contain.

In a further preferred embodiment contains the fleece carpet backing Bicomponent fibers used in the jacket recycled polymers and in the core Dyes contain.

In a further preferred embodiment contains the fleece carpet backing Bicomponent fibers, in the core and in the shell recycled polymers contain and contain dyes in the core.

Especially Preferably, the nonwoven carpet backing characterized in that the core of the bicomponent fibers recycled polymers and the sheath of the bicomponent fiber contains dyes.

Farther particularly preferably, the nonwoven carpet back is characterized that the core and the mantle of bicomponent fibers recycled polymers contained and the coat contains dyes.

Also particularly preferably, the nonwoven carpet back is characterized that the core and the mantle of bicomponent fibers recycled polymers and the core and the coat contain dyes.

Prefers the dyes are organic or inorganic Dyes. By staining the shell polymer with organic or inorganic dyes, for example, pigments or liquid Dyes, the color differences of the core polymer and / or covered by the shell polymer.

By staining of the core polymer the color differences of the core polymer are covered.

By staining of the core polymer and the shell polymer, the color differences of the Core polymer and the cladding polymer are covered.

The organic or inorganic dyes for coloring the core polymer and / or sheath polymer are admixed to the sheath polymer in an amount such that the colorant Differences of the core polymer or the shell polymer are no longer visible. The result is a non-woven carpet backing with a constant, even coloration that is very well suited for the production of tufted carpets or carpet tiles. A uniform, uniform dyeing is to be understood to mean a dyeing that is uniform so that the backing has the same color image across the entire width and length of a carpet backing and that the dyeing is so uniform that the carpet backing does not adversely affect the tufted carpet's dye image affected.

Of the Proportion of recycled polymer to the core component of the bicomponent fiber can easily 20 wt .-% and more, preferably more than 80% or 90% and particularly preferably 100 wt .-% amount.

The Polymer for the core component is preferably selected from the group polyester, Polyamide, polyolefins, copolymers of these polymers and mixtures it.

Of the Proportion of recycled polymer on the sheath component of the bicomponent fiber can easily 20 wt .-% and more, preferably more than 80% or 90% and particularly preferably 100 wt .-% amount.

The Polymer for the sheath component should advantageously be of the same type Group are selected as the polymers of the core component, wherein Core and coat can also contain the same polymer, as long as the melting point of the sheath polymer lower than the melting point of the core polymer.

Prefers Both core and cladding contain different polymers. However, it is also when using different polymers for core and cladding take care that the melting point of the sheath polymer is lower is the melting point of the core polymer.

Prefers the melting point of the sheath polymer is at least 10 ° C lower as the melting point of the core polymer. The melting point of the shell polymer may in a particularly preferred embodiment by up to 100 ° C lower than the melting point of the core polymer are.

In a particularly preferred embodiment The present invention consists of the bicomponent fibers of Nonwoven carpet backing made of polyamide 6 in the jacket and recycled polyester in the core.

When Raw material for For example, recycled polyester can already be used for beverage bottles used polyester, the color of the beverage bottles recovered polyester from blue over yellow and green may vary depending from the original one Bottle color and any impurities on the plastic adhered.

The volume ratio between core and mantle preferably between 50/50 and 90/10 and can be used for example at 60/40 or 75/25 lie.

The nonwoven carpet backing according to the present invention preferably has a basis weight of from 30 g / m ² to 180 g / m ² , more preferably a basis weight of from 70 g / m ² to 140 g / m ² .

The Bicomponent fibers preferably have a single filament titer 5 dtex and 50 dtex, more preferably between 10 dtex and 25 dtex, or between 10 dtex and 15 dtex.

The organic or inorganic dyes are the core polymer or the shell polymer by techniques known in the art. For example can pigment and polymer by co-extrusion of polymer and pigment masterbatch mixed. Another alternative would be to for example liquid pigment solution while the extrusion process of the extruder, the spinning of bicomponent fibers upstream, supply. Preferably, the pigments contained in the shell or core are selected from the group soot, organometallic complexes, organic pigments and titanium dioxide. The selection depends on from the desired Final coloration.

By the coloring of the sheath polymer and / or core polymer of the core / sheath bicomponent fibers The use of polymers is no longer limited to raw materials coloring limited. Also, recycling polymers can without problems for Fleece backing be used. The present invention provides a new source of raw materials for the Production of nonwoven carpet backing and thus made a contribution to recycling plastics and for to use new products.

Claims (12)

Nonwoven carpet backing comprising bicomponent fibers with core / sheath structure, wherein the bicomponent fibers recycled polymers and dyes. Nonwoven carpet backing according to claim 1, characterized in that the core of the bicomponent fibers Recycled polymers and the sheath of bicomponent fibers organic or inorganic dyes. Nonwoven carpet backing according to claim 1, characterized in that the core and the jacket recycled polymers contain and that the coat organic or inorganic dyes contains. Nonwoven carpet backing according to claim 1, characterized in that the core and the jacket recycled polymers contain and that the core and the mantle organic or inorganic Dyes contain. Nonwoven carpet backing according to one or more of claims 1 to 4, characterized in that the proportion of recycled polymer on the core component of the bicomponent fiber at least 80 wt .-% is. Nonwoven carpet backing according to one or more of claims 1, 3 or 4, characterized that the proportion of recycled polymer on the sheath component of the bicomponent fiber at least 80 wt .-% is. Nonwoven carpet backing according to one or more of claims 1 to 6, characterized in that the polymer for the core component selected is from the group polyester, polyamide, polyolefins, copolymers these polymers and mixtures thereof. Nonwoven carpet backing according to one or more of claims 1 to 7, characterized in that the polymer for the shell component selected is from the group polyester, polyamide, polyolefins, copolymers these polymers and mixtures thereof. Nonwoven carpet backing according to one or more of claims 1 to 8, characterized in that the dyes contained in the shell are selected from the group carbon black, organometallic complexes, organic pigments and titanium dioxide. Nonwoven carpet backing according to one or more of claims 1 and 4 to 9, characterized in that the dyes contained in the core are selected from the group soot, organometallic complexes, organic pigments and titanium dioxide. Nonwoven carpet backing according to one or more of claims 1 to 10, characterized in that the bicomponent fibers have a filament titer between 5 dtex and 25 dtex. Nonwoven carpet backing according to one or more of claims 1 to 11, characterized in that the volume ratio Core / coat is between 60/40 and 90/10.