AT368448B - LAYER MATERIAL TO COVER THE REAR SIDE OF NEEDLE FLORAL (TUFTING) CARPETS - Google Patents

LAYER MATERIAL TO COVER THE REAR SIDE OF NEEDLE FLORAL (TUFTING) CARPETS

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Publication number
AT368448B
AT368448B AT0889978A AT889978A AT368448B AT 368448 B AT368448 B AT 368448B AT 0889978 A AT0889978 A AT 0889978A AT 889978 A AT889978 A AT 889978A AT 368448 B AT368448 B AT 368448B
Authority
AT
Austria
Prior art keywords
carpets
layer material
carpet
tufting
fleece
Prior art date
Application number
AT0889978A
Other languages
German (de)
Other versions
ATA889978A (en
Inventor
Peter Ing Supanz
Original Assignee
Chemie Linz Ag
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Publication date
Application filed by Chemie Linz Ag filed Critical Chemie Linz Ag
Priority to AT0889978A priority Critical patent/AT368448B/en
Publication of ATA889978A publication Critical patent/ATA889978A/en
Application granted granted Critical
Publication of AT368448B publication Critical patent/AT368448B/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/12Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/06Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/32Layered products comprising a layer of synthetic resin comprising polyolefins
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022Non-woven fabric
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/06Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04Interconnection of layers
    • B32B7/12Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/04Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06N3/045Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with polyolefin or polystyrene (co-)polymers
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N7/00Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material
    • D06N7/0063Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf
    • D06N7/0071Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf characterised by their backing, e.g. pre-coat, back coating, secondary backing, cushion backing
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N7/00Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material
    • D06N7/0063Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf
    • D06N7/0071Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf characterised by their backing, e.g. pre-coat, back coating, secondary backing, cushion backing
    • D06N7/0081Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf characterised by their backing, e.g. pre-coat, back coating, secondary backing, cushion backing with at least one extra fibrous layer at the backing, e.g. stabilizing fibrous layer, fibrous secondary backing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02Synthetic macromolecular fibres
    • B32B2262/0253Polyolefin fibres
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2201/00Chemical constitution of the fibres, threads or yarns
    • D06N2201/02Synthetic macromolecular fibres
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2201/00Chemical constitution of the fibres, threads or yarns
    • D06N2201/02Synthetic macromolecular fibres
    • D06N2201/0254Polyolefin fibres
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2201/00Chemical constitution of the fibres, threads or yarns
    • D06N2201/02Synthetic macromolecular fibres
    • D06N2201/0263Polyamide fibres
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2203/00Macromolecular materials of the coating layers
    • D06N2203/04Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06N2203/042Polyolefin (co)polymers
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2207/00Treatments by energy or chemical effects
    • D06N2207/12Treatments by energy or chemical effects by wave energy or particle radiation
    • D06N2207/123Treatments by energy or chemical effects by wave energy or particle radiation using electromagnetic radiation, e.g. IR, UV, actinic light, laser, X-ray, gamma-ray, microwave, radio frequency

Description

  

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   Die Erfindung betrifft ein Schichtmaterial zum Überziehen der Rückseite von Nadelflor- - (Tufting)-Teppichen und zum Festhalten der Polfäden, mit dem Rückenbeschichtung und Polfadenverfestigung in einem einzigen Arbeitsgang bewerkstelligt werden können. 



   Es ist bekannt, dass Tuftingteppiche, gleichgültig, ob es sich um Schlingen- oder Florware handelt, rückenbeschichtet werden müssen. Diese Rückenbeschichtung besteht meist in zwei Arbeitsgängen mit verschiedenen Aufgaben, nämlich a) dem sogenannten Grundstrich, mit dem die Noppen oder Florfäden im Grundmaterial ver- festigt werden und b) dem Auftrag eines Schaumes oder eines Gewebes. Dadurch wird die Dicke und damit der
Begehkomfort, die Trittschalldämmung und die Wärmeisolation erhöht. Bei dieser Schicht werden bestimmte Eigenschaften, vor allem gute Wiedererholbarkeit und Rollstuhleignung verlangt. 



   Der Maschinenpark, der für solche Beschichtungen, die meist kontinuierlich durchgeführt werden, erforderlich ist, ist sehr kostenintensiv,   u. zw.   sowohl wegen der hohen Investitionen als auch wegen des hohen Energie- und Platzbedarfes. Ein derartiger Aufwand ist zwar in Grossbetrieben möglich, bringt aber für kleine Teppicherzeuger erhebliche Schwierigkeiten mit sich. 



   Gemäss der FR-PS Nr.   1. 197. 406   wird die Rückenbeschichtung eines Teppichs mittels eines Gewebes in der Weise bewerkstelligt, dass Klebstoff auf dem als Rückseite dienenden Hilfsgewebe aufgetragen und dieses anschliessend mit dem Teppich, in diesem Falle einem gewebten Plüschteppich, vereinigt wird. Der Klebstoff dient hiebei lediglich zum Verbinden der beiden Schichten. 



   Aus der US-PS Nr. 3, 953, 632 geht ferner hervor, dass imprägnierte und ausgehärtete Vliese, die als Bodenbelag in Kraftfahrzeugen dienen sollen, durch Verkleben mit einer Teppichoberfläche versehen werden können, wobei auch hier der Klebstoff nur die Rolle des Haftvermittlers zwischen gehärtetem Vlies und Teppichoberfläche erfüllt. Die Verklebung erfolgt hiebei vorzugsweise über eine Zwischenschicht aus Papier, die mit beiden Schichten über Klebstoff verbunden wird. 



   In der DE-OS 1929225 ist eine beschichtete Textilbahn, bestehend aus einer beliebigen textilen Trägerschicht und einem Auftrag, der zur Hauptsache aus ataktischem Polypropylen besteht, das gegebenenfalls durch Einarbeitung von Füllmitteln, wie Schwerspat, Bariumoxyd, im Gewicht erhöht wird, beschrieben. Dieses Schichtmaterial soll bevorzugt als Fussbodenbelag mit schalldämmenden Eigenschaften dienen, wobei die Rückseite aus ataktischem Polypropylen eine gewisse Klebfähigkeit aufweist und so auf der Unterlage haftet. Die Klebfähigkeit kann durch einen Auftrag an plastischem Kleber noch verbessert werden. 



   Gewebe- oder Vliesträger, die mit einer in der Hitze aktivierbaren Kleberbeschichtung aus ataktischen Polyolefinen versehen sind, wurden auch schon zur Verwendung als Grundlage für Tuftingteppiche vorgeschlagen, wobei das Einziehen der Polfäden (Tuften) an dem bereits beschichteten Träger durchgeführt wird und die Polfäden anschliessend durch Erhitzen der Beschichtung fixiert werden, worauf der Teppich eventuell mit einer weiteren Rückenausrüstung versehen werden kann (DE-OS 2610141). Dieses Verfahren hat jedoch den Nachteil, dass durch das Vorhandensein der Kleberschicht auf dem Rücken der Tuftinggrundlage der Tuftingnadel ein gewisser Widerstand entgegengesetzt wird, der den Tuftingvorgang erschwert. Ferner ist zur Aufbringung einer Rückenbeschichtung zur Erhöhung des Begehkomforts nach wie vor ein weiterer Arbeitsgang erforderlich. 



   Es konnte nun ein einfaches und auch in einfachen Werkstätten leicht durchführbares Verfahren zur Rückenbeschichtung gefunden werden, das in einem einzigen Arbeitsgang die Verfestigung der Polfäden und die Beschichtung vornimmt und an keine aufwendige Beschichtungsapparatur gebunden ist. Dieses Verfahren beruht darauf, dass Fadenverfestigung und Beschichtung durch Aufpressen eines Schichtmaterials, bestehend aus einem Vliesträger und einer Schicht aus ataktischem Polypropylen, vorgenommen wird. 



   Gegenstand der Erfindung ist demnach ein Schichtmaterial zum Überziehen der Rückseite von   Nadelflor- (Tufting)-Teppichen   und zum Festhalten der Polfäden, das dadurch gekennzeichnet ist, dass es aus einem durch Vernadeln verfestigten Vlies aus Kunstfasern oder-filamenten und 

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 einer Schicht aus ataktischem, durch Aufwärmen in klebrigen Zustand überführbarem Polypropylen mit einem Flächengewicht von 700 bis 1300   g/m2 besteht.   



   Dieses Schichtmaterial wird unmittelbar nach Aufwärmen jener Seite, die das ataktische Polypropylen trägt, bis zur Erreichung des klebrigen Zustandes desselben, mit der Rückseite des zu beschichtenden Tuftingteppichs unter Druck vereinigt. 



   Das Vlies als Träger der Schicht aus ataktischem Polypropylen kann ein   Stapelfaser- oder   Endlosfadenvlies sein. Durch die durch Vernadelung vorgenommene Verfestigung ist es elastisch genug, um die für eine Teppichrückenbeschichtung erwünschten Eigenschaften zu besitzen. Es ist genügend flexibel, um dem Teppich einen angenehmen Komfort zu verleihen und seine Wiedererholbarkeit ist so hoch, dass auch stärkere Belastungen, wie jene durch einen Rollstuhl tolerierbare Eindrücke hinterlassen. Das Flächengewicht des Vlieses wird je nach Vernadelungsgrad, d.   h.   je nach dem Mass der Verdichtung, schwanken, wobei das Mass der Verdichtung wieder den zu verleihenden Eigenschaften des Teppichs anzupassen ist.

   Wird ein höherer Komfort verlangt, wird eine höhere Schichtdicke des Vlieses gewählt, wobei das Vlies je nach erwünschter Weichheit stärker oder schwächer verdichtet sein kann. Hingegen wird für sehr strapazfähige Teppiche ein höher verdichtetes Vlies geringerer Schichtdicke zu wählen sein. In der Regel werden Vliese mit einem Flächengewicht von 200 bis 400   g/m2 verwendet.   



   Als Material sind alle Kunstfasern und-filamente geeignet, wie z. B. Polyamid-, Polyesteroder Polyolefinfasern. Besonders bevorzugt sind Vliese aus Polypropylen. 



   Das erfindungsgemässe Schichtmaterial wird mit einer Schutzfolie, vorzugsweise einem Silikonpapier, bedeckt, welche dann vor dem Anbringen des Schichtmaterials abgezogen wird. 



   Das mit der Schutzfolie versehene, beschichtete Vlies kann im Grossen hergestellt und als solches in den Handel gebracht werden. Erzeuger von Tuftingteppichen können das beschichtete Vlies dann einfach käuflich erwerben und damit ihre Teppiche rückenbeschichten. 



   Ob die Wahl auf ein   Stapelfaser- oder   Endlosfadenvlies fällt, ist eine Frage der erwünschten Eigenschaften und der örtlichen Verfügbarkeit des Vlieses. Üblicherweise wählt man Vliese mit einem Flächengewicht von 200 bis 400 g/m2, um den erwünschten Gehkomfort zu erzielen. Auf dieses Vlies wird dann das ataktische Polypropylen mittels einer Walze aufgetragen. Die Temperatur des Polypropylens beträgt hiebei zweckmässig etwa   160 C.   Vor dem Aufwickeln wird das beschichtete Vlies mit einer Schutzfolie abgedeckt, um ein Zusammenkleben zu verhindern. 



   Die Rückenbeschichtung beim Teppicherzeuger ist dann ganz einfach. Das beschichtete Vlies wird abgerollt, die Schutzfolie abgezogen und die Schicht aus ataktischem Polypropylen auf geeignete Weise,   z. B.   durch Infrarotstrahlen, erwärmt. Unmittelbar darauf wird die Vliesbahn mit dem Tuftingteppich vereinigt, wobei die erwärmte Seite der Vliesbahn mit der Rückseite des noch nicht fixierten Tuftingteppichs unter Druck,   z. B.   mittels Presswalzen, verbunden wird. Nach Kühlung kann der fertige Teppich in üblicher Weise aufgerollt werden. 



   Beispiel 1 : Ataktisches Polypropylen wird in einem Heiztrog auf eine Temperatur von etwa   160 C   erhitzt. Mittels einer Tauchwalze wird ein Film an ataktischem Polypropylen aus dem Bad herausgezogen und über eine gegenläufig rotierende Auftragswalze auf ein vernadeltes Endlosfadenvlies mit einem Gewicht von 300   g/m2 übertragen.   Der Auftrag beträgt hiebei 1100 g/m2. Nach Kühlung wird die Kleberseite mit einem Silikonpapier abgedeckt. Das Schichtmaterial kann in dieser Form aufgerollt werden und ist so lager-und transportfähig. 



   Zum Zwecke der Beschichtung eines Tuftingteppichs wird das aufgewickelte Vlies abgerollt, wobei gleichzeitig das Silikonpapier abgezogen wird. Hierauf wird das ataktische Polypropylen mittels eines Infrarotstrahlers bis zum Erreichen des klebrigen Zustandes erwärmt und dann mit der Rückenseite des Tuftingteppichs unter Druck vereinigt. Der fertige Teppich wird dann gekühlt und zu einer lagerfähigen Rolle aufgerollt. 



   Beispiel 2 : Ein vernadeltes Stapelfaservlies aus Polypropylen mit einem Flächengewicht von 550   g/m2   wird, wie in Beispiel 1 beschrieben, mit 1000   g/m2 ataktischem   Polypropylen beschichtet und mit Silikonpapier abgedeckt. Es kann, wie in Beispiel 1 beschrieben, zur Rückenbeschichtung von Tuftingteppichen verwendet werden.



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   The invention relates to a layer material for covering the back of needle pile (tufting) carpets and for holding the pile threads, with which the back coating and pile thread hardening can be accomplished in a single operation.



   It is known that tufted carpets, regardless of whether they are loops or pile goods, must be back-coated. This back coating usually consists of two work steps with different tasks, namely a) the so-called base coat, with which the knobs or pile threads are solidified in the base material and b) the application of a foam or a fabric. This will make the thickness and thus the
Easy to walk on, impact sound insulation and heat insulation increased. This layer requires certain properties, especially good repeatability and wheelchair suitability.



   The machinery that is required for such coatings, which are usually carried out continuously, is very cost-intensive, u. between both because of the high investments and because of the high energy and space requirements. Such an effort is possible in large companies, but it brings considerable difficulties for small carpet manufacturers.



   According to FR-PS No. 1. 197. 406, the back coating of a carpet is accomplished by means of a fabric in such a way that adhesive is applied to the auxiliary fabric serving as the back and this is then combined with the carpet, in this case a woven plush carpet . The adhesive is only used to connect the two layers.



   From US-PS No. 3, 953, 632 it is also apparent that impregnated and cured nonwovens, which are intended to serve as flooring in motor vehicles, can be provided with a carpet surface by gluing, with the adhesive here also only serving as an adhesion promoter hardened fleece and carpet surface met. The bonding is preferably carried out via an intermediate layer of paper, which is connected to both layers by means of adhesive.



   DE-OS 1929225 describes a coated textile web consisting of any textile backing layer and an application which mainly consists of atactic polypropylene, which is optionally increased in weight by incorporating fillers such as heavy spar, barium oxide. This layer material should preferably serve as a floor covering with sound-absorbing properties, the rear side made of atactic polypropylene having a certain adhesiveness and thus adhering to the underlay. Adhesion can be improved by applying plastic glue.



   Woven or non-woven backings, which are provided with a heat-activated adhesive coating made of atactic polyolefins, have also been proposed for use as the basis for tufted carpets, the pile threads (tufts) being drawn in on the already coated carrier and the pile threads subsequently being carried out Heating the coating to be fixed, whereupon the carpet can possibly be provided with additional backing (DE-OS 2610141). However, this method has the disadvantage that the presence of the adhesive layer on the back of the tufting base of the tufting needle opposes a certain resistance, which complicates the tufting process. Furthermore, a further work step is still required to apply a back coating to increase the ease of walking.



   It has now been possible to find a simple method for back coating, which can also be carried out easily in simple workshops, which consolidates the pile threads and the coating in a single operation and is not tied to any complex coating apparatus. This method is based on the fact that thread consolidation and coating are carried out by pressing on a layer material consisting of a non-woven backing and a layer of atactic polypropylene.



   The invention accordingly relates to a layer material for covering the back of needle pile (tufting) carpets and for holding the pile threads, which is characterized in that it consists of a nonwoven fabric made of synthetic fibers or filaments, which is consolidated by needling

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 a layer of atactic polypropylene which can be converted into a sticky state by heating and has a weight per unit area of 700 to 1300 g / m2.



   This layer material is combined with the back of the tufted carpet to be coated under pressure immediately after warming up the side which carries the atactic polypropylene until the sticky state thereof is reached.



   The fleece as the carrier of the layer made of atactic polypropylene can be a staple fiber or continuous thread fleece. Due to the needling, it is elastic enough to have the properties desired for a carpet backing. It is flexible enough to give the carpet a pleasant comfort and its repeatability is so high that even heavy loads, such as those left by a wheelchair, leave tolerable impressions. The basis weight of the fleece is depending on the degree of needling, i.e. H. vary according to the degree of compaction, the degree of compaction being adapted again to the properties of the carpet to be imparted.

   If a higher level of comfort is required, a higher layer thickness of the fleece is selected, the fleece being able to be more or less compressed depending on the desired softness. On the other hand, a higher density fleece with a lower layer thickness will have to be chosen for very hard-wearing carpets. As a rule, nonwovens with a basis weight of 200 to 400 g / m2 are used.



   All synthetic fibers and filaments are suitable as material, e.g. B. polyamide, polyester or polyolefin fibers. Nonwovens made of polypropylene are particularly preferred.



   The layer material according to the invention is covered with a protective film, preferably a silicone paper, which is then removed before the layer material is applied.



   The coated nonwoven with the protective film can be manufactured on a large scale and marketed as such. Producers of tufted carpets can then simply buy the coated fleece and thus coat their carpets with their backs.



   Whether the choice falls on a staple fiber or continuous filament fleece is a question of the desired properties and the local availability of the fleece. Usually you choose nonwovens with a basis weight of 200 to 400 g / m2 to achieve the desired walking comfort. The atactic polypropylene is then applied to this fleece by means of a roller. The temperature of the polypropylene is expediently about 160 C. Before the winding, the coated fleece is covered with a protective film in order to prevent it from sticking together.



   The back coating at the carpet manufacturer is then very simple. The coated fleece is unrolled, the protective film removed and the layer of atactic polypropylene in a suitable manner, e.g. B. heated by infrared rays. Immediately thereafter, the nonwoven web is combined with the tufted carpet, the heated side of the nonwoven web with the back of the not yet fixed tufted carpet under pressure, e.g. B. is connected by pressing rollers. After cooling, the finished carpet can be rolled up in the usual way.



   Example 1: Atactic polypropylene is heated to a temperature of about 160 ° C. in a heating trough. A film of atactic polypropylene is pulled out of the bath by means of an immersion roller and transferred to a needled continuous thread fleece with a weight of 300 g / m 2 via a counter-rotating application roller. The order is 1100 g / m2. After cooling, the adhesive side is covered with a silicone paper. The layer material can be rolled up in this form and is thus storable and transportable.



   For the purpose of coating a tufted carpet, the wound nonwoven is unrolled, at the same time the silicone paper is removed. The atactic polypropylene is then heated by an infrared heater until the sticky state is reached and then combined under pressure with the back of the tufted carpet. The finished carpet is then cooled and rolled up into a storable roll.



   Example 2: A needled staple fiber fleece made of polypropylene with a basis weight of 550 g / m2 is, as described in Example 1, coated with 1000 g / m2 of atactic polypropylene and covered with silicone paper. As described in Example 1, it can be used for the back coating of tufted carpets.

 

Claims (1)

PATENTANSPRUCH : Schichtmaterial zum Überziehen der Rückseite von Nadelflor- (Tufting)-Teppichen und zum Festhalten der Polfäden, dadurch gekennzeichnet, dass es aus einem durch Vernadeln verfestigten Vlies aus Kunstfasern oder-filamenten und einer Schicht aus ataktischem, durch Aufwärmen in klebrigen Zustand überführbarem Polypropylen mit einem Flächengewicht von 700 bis 1300 g/m2 besteht. PATENT CLAIM: Layer material for covering the back of tufted carpets and for holding the pile threads, characterized in that it consists of a non-woven fabric made of synthetic fibers or filaments, which is consolidated by needling, and a layer of atactic polypropylene, which can be converted into a sticky state by heating up There is a basis weight of 700 to 1300 g / m2.
AT0889978A 1978-12-14 1978-12-14 LAYER MATERIAL TO COVER THE REAR SIDE OF NEEDLE FLORAL (TUFTING) CARPETS AT368448B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT0889978A AT368448B (en) 1978-12-14 1978-12-14 LAYER MATERIAL TO COVER THE REAR SIDE OF NEEDLE FLORAL (TUFTING) CARPETS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0889978A AT368448B (en) 1978-12-14 1978-12-14 LAYER MATERIAL TO COVER THE REAR SIDE OF NEEDLE FLORAL (TUFTING) CARPETS

Publications (2)

Publication Number Publication Date
ATA889978A ATA889978A (en) 1982-02-15
AT368448B true AT368448B (en) 1982-10-11

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983004170A1 (en) * 1982-06-02 1983-12-08 Ag Für Kunststoffverwertung Antiskidding band, particulary carpet band
DE9309926U1 (en) * 1993-07-03 1993-09-02 Schaeffler Teppichboden Gmbh Doormat
BE1006624A3 (en) * 1993-01-08 1994-11-03 Bercopa Sa Recyclable synthetic carpet and method for manufacturing it
WO1997019813A1 (en) * 1995-11-28 1997-06-05 Ko & Co. Kft Flat composite insulating system and method of producing said system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983004170A1 (en) * 1982-06-02 1983-12-08 Ag Für Kunststoffverwertung Antiskidding band, particulary carpet band
BE1006624A3 (en) * 1993-01-08 1994-11-03 Bercopa Sa Recyclable synthetic carpet and method for manufacturing it
DE9309926U1 (en) * 1993-07-03 1993-09-02 Schaeffler Teppichboden Gmbh Doormat
WO1997019813A1 (en) * 1995-11-28 1997-06-05 Ko & Co. Kft Flat composite insulating system and method of producing said system

Also Published As

Publication number Publication date
ATA889978A (en) 1982-02-15

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