EP0259692A2 - Method for making consolidated fibre fleeces, and consolidated fibre fleeces - Google Patents

Method for making consolidated fibre fleeces, and consolidated fibre fleeces Download PDF

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Publication number
EP0259692A2
EP0259692A2 EP87112311A EP87112311A EP0259692A2 EP 0259692 A2 EP0259692 A2 EP 0259692A2 EP 87112311 A EP87112311 A EP 87112311A EP 87112311 A EP87112311 A EP 87112311A EP 0259692 A2 EP0259692 A2 EP 0259692A2
Authority
EP
European Patent Office
Prior art keywords
fleece
water
filaments
nonwovens
fabric
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87112311A
Other languages
German (de)
French (fr)
Other versions
EP0259692A3 (en
EP0259692B1 (en
Inventor
Klaus Dipl.-Chem. Dr. Albien
Günter Dipl.-Ing. Maurer (FH)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cerdia Produktions GmbH
Original Assignee
Rhodia AG
Rhone Poulenc Rhodia AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rhodia AG, Rhone Poulenc Rhodia AG filed Critical Rhodia AG
Priority to AT87112311T priority Critical patent/ATE69073T1/en
Publication of EP0259692A2 publication Critical patent/EP0259692A2/en
Publication of EP0259692A3 publication Critical patent/EP0259692A3/en
Application granted granted Critical
Publication of EP0259692B1 publication Critical patent/EP0259692B1/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/10—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically
    • D04H3/11—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically by fluid jet
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/009—Condensation or reaction polymers
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/009—Condensation or reaction polymers
    • D04H3/011—Polyesters
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/10—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/913—Material designed to be responsive to temperature, light, moisture
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2508—Coating or impregnation absorbs chemical material other than water
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2861—Coated or impregnated synthetic organic fiber fabric
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2861—Coated or impregnated synthetic organic fiber fabric
    • Y10T442/2893—Coated or impregnated polyamide fiber fabric

Definitions

  • the invention relates to a process for the production of consolidated nonwovens for the absorption of water and / or substances with oleophilic and / or lipophilic properties by blow spinning a melt or a solution of a spinnable polymeric material with the aid of a nozzle head which has one nozzle opening or several nozzle openings. to staple fibers and / or filaments, forming these staple fibers and / or filaments into a fleece by placing them on a receiving device, solidifying this fleece and applying a wetting agent to the fleece.
  • the invention also relates to consolidated nonwovens for the absorption of water and / or substances with oleophilic and / or lipophilic properties.
  • the known nonwovens of this type have the following disadvantages: -
  • the pattern binding with pins significantly reduces the surface of the nonwovens that is effective for absorbing water and / or oil. - Since the pattern binding with pins cannot be carried out over the entire surface, because otherwise the surface of the nonwovens that is effective for absorbing water and / or oil will be completely lost, such nonwoven webs that have been bound to part of the pattern have only relatively low strengths, such as maximum tensile strength, tear strength and tear resistance, and a relative strength high abrasion.
  • the pattern binding cannot change the original two-dimensional arrangement of the fibers, ie the arrangement of the fibers in the transverse and longitudinal directions, in the fleece; not only is it not possible for the nonwovens to improve in terms of the - textile - case and feel and softness, but there is even a significant deterioration in this regard.
  • the invention has for its object to provide a method of the type described above with which nonwovens can be obtained have a larger effective surface for absorbing water and / or oils, fats and the like compared to the known nonwovens of this type, -
  • they have improved strength properties, such as an improved maximum tensile force, tear resistance and tear resistance, as well as less abrasion and - have a better textile case and handle and improved softness compared to the known nonwovens of this type.
  • the embodiments according to claims 2 and 3 offer the following advantages: -
  • the nonwovens obtained can be dried at high temperatures, for example significantly above 150 ° C., and can also be used to absorb water and / or substances with oleophilic and / or lipophilic properties even at such high temperatures.
  • the nonwovens obtained show very high strengths, in particular a high maximum tensile strength, tear resistance and tear resistance.
  • the embodiment according to claim 4 has the advantage that the nonwovens obtained have a very large effective surface for the absorption of water and / or substances with oleophilic and because of the fineness of the staple fibers and filaments, that is because of their small diameter and thus high specific surface area / or have lipophilic properties.
  • the embodiment according to claim 5 offers the advantage that the surfactants used are biodegradable and very well tolerated by the skin.
  • the embodiment according to claim 6 offers the advantage that the surfactants used can solve special tasks, for example in metal treatment, where corrosion protection and rapid drying are important.
  • the invention is also based on the object to provide consolidated nonwovens of the type described at the outset have a larger effective surface for absorbing water and / or oils, fats and the like compared to the known nonwovens of this type, - Compared to the known nonwovens of this type, they have improved strength properties, such as an improved maximum tensile force, tear resistance and tear resistance, as well as less abrasion and - have a better textile case and handle and improved softness compared to the known nonwovens of this type.
  • spinnable polymeric materials include polyesters, such as polyethylene terephthalate, and polyamides, such as polyamide-66, but also, for example, polyolefins, such as polyethylene and polypropylene, cellulose esters, such as cellulose-2,5-acetate and triacetate, and acrylic polymers, such as polyacrylonitrile.
  • polyesters such as polyethylene terephthalate
  • polyamides such as polyamide-66
  • polyolefins such as polyethylene and polypropylene
  • cellulose esters such as cellulose-2,5-acetate and triacetate
  • acrylic polymers such as polyacrylonitrile
  • a melt or a solution of a spinnable polymeric material is blow-spun into staple fibers and / or filaments.
  • Such blow-spinning is described, for example, in "Industrial and Engineering Chemistry", volume 48, no. 8 (1956), pages 1342 to 1346, and in German Patent 19 64 060.
  • Substances with oleophilic and / or lipophilic properties are e.g. Oils, such as mineral oils or silicone oils, and fats or mixtures thereof.
  • the fleece is solidified with the help of water jets.
  • water jet consolidation is described, for example, in German Offenlegungsschrift 17 10 989 and in German Auslegeschrift 16 35 577.
  • the water jet consolidation causes a swirling and post-stretching of the staple fibers and / or filaments within the fleece, thereby additional effective surface for the absorption of water and / or substances with oleophilic and / or lipophilic properties is obtained, -
  • the fleece receives improved strength properties and has less abrasion and -
  • the fleece experiences an improvement in the textile fall and feel and softness.
  • a zwitterionic or a cationic surfactant is applied to the nonwoven as a wetting agent.
  • Suitable zwitterionic surfactants are in particular amine oxides and betaines, but also imidazoline carboxylates and aminocarboxylic acids.
  • Suitable cationic surfactants are, for example, primary, secondary, tertiary or quaternary ammonium salts, benzylammonium salts, alkanolammonium salts, pyridinium salts, imidazolinium salts, oxazolinium salts, thiazolinium salts, sulfonium salts, quinolium salts, salts of amine oxides, tropinium salts and isochlorine salts. If necessary, mixtures of the same can also be used.
  • the nonwovens according to the invention can be used, for example, as roll goods or in pieces adapted therefrom in industrial or non-industrial areas for cleaning purposes; it is essential that both water and substances with oleophilic and / or lipophilic properties can be absorbed by the nonwovens.
  • Polyethylene terephthalate with an intrinsic viscosity of 0.67 (measured in tetrachloroethane phenol 1: 1), a melt viscosity of 2,400 dPa.s and a water content of 0.1 percent by weight was melted at 323 ° C and using a spinning head (nozzle head) similar to that according to German Patent 25 50 463 to staple fibers and filaments, the one had an average diameter of 1.8 ⁇ m, melt-blow-spun.
  • the staple fibers and filaments were formed into a fleece with a basis weight of 100 g / m 2 by being placed on a holding device which consisted of a rotating drum. The nozzle head was above the rotating drum and it was spun vertically downwards.
  • the fleece which had a width of 200 mm, was guided over guide rollers onto a continuous endless sieve belt, which was part of a water jet consolidation device, which in principle corresponded to that in accordance with German patent specification 16 35 577.
  • the water jet consolidation device had eight rows of water nozzles, which were arranged above the fleece and at an angle of 90 ° to the running direction of the fleece.
  • Each row of water nozzles had a length (effective jet width) of 200 mm and each had 100 nozzle bores.
  • the distance between the nozzles and the fleece was 10 mm and there was a water pressure of 120 bar in front of each nozzle.
  • the water jets formed an angle of 90 ° with the fleece.
  • the process water was then removed to a residual moisture content of the fleece of 100% by subsequently passing the fleece through squeeze rolls.
  • the wetting agent was applied by passing the fleece over a structured net roll.
  • the wetting agent was 1-alkoylamino-3-dimethylamino-propane-3-N-oxide.
  • the wet absorption (liquid absorption) of the fleece was 100% of the initial dry weight of this fleece.
  • the wetting agent bath had a concentration of 0.5 weight percent of the aforementioned wetting agent; this gave the fleece a content of 0.5% by weight of wetting agent, based on the dry weight of the fleece.
  • the fleece was guided from the netting roller through a drying oven, where it was dried to a residual moisture content of approximately 1%, and then wound onto tubes.
  • the process speed that is to say the speed at which the nonwoven ran continuously through the process steps mentioned, was 2 m / min.
  • the solidified nonwoven obtained had a maximum tensile force (measured according to DIN 53857) in the longitudinal direction of 8.3 daN and in the transverse direction of 4.5 daN.
  • the specific spun fiber / filament surface of this fleece effective for the absorption of water and / or oils and / or fats and the like was 1.6 m2 / g (measured according to the BET method), corresponding to 160 m2 surface per m2 fleece.
  • the oil absorption capacity of this fleece was 4.3 g of oil per g of fleece.
  • the water absorption capacity of this fleece was 5.8 g of water per g of fleece. Furthermore, the solidified nonwoven obtained had a pleasant soft textile feel and a good fall.
  • Example 1 was repeated, with the difference that the wetting agent was not applied by passing the nonwoven over a structured network roller, but rather by applying this agent to the nonwoven via the water jet consolidation device - contained in the process water at 0.3 percent by weight - the wetting agent used was not the one mentioned in Example 1 but a mixture of alkyldimethylbenzylammonium chlorides, which is marketed by Hoechst AG, Frankfurt / Main, Federal Republic of Germany, under the Dodigen 226 brand, the process water was removed after the water jet consolidation by passing the fleece through squeeze rollers to a residual moisture content of the fleece of 200%, whereby the fleece obtained a content of 0.6% by weight of wetting agent, based on the dry weight of the fleece, - The fleece was dried to a residual moisture content of approximately 1% immediately after removal of the process water by passing it through a drying oven.
  • the wetting agent was not applied by passing the nonwoven over a structured network roller, but rather by applying this agent to the nonwoven via the water jet consolidation device - contained in
  • the consolidated nonwovens produced according to the invention have - a larger effective surface for the absorption of water and / or oils, fats and the like, - Improved strength properties and less abrasion and - a better textile case and grip and an improved softness compared to the known consolidated nonwovens for the absorption of water and / or substances with oleophilic and / or lipophilic properties.

Abstract

Consolidated nonwoven fabrics and the process of producing theme is disclosed. The fabrics absorb water and substances with oleophilic and/or lipophilic properties. The inventive process includes blow-spinning a melt or a solution of a spinnable polymeric material to textile fibers and/or filaments, preferably having a diameter of 0.1 to 6 mu m, more preferably 0.5 to 3 mu m, transforming these textile fibers and/or filaments to a nonwoven fabric, consolidating this fabric and applying a wetting agent to the fabric. Consolidation is accomplished by means of water jets, then a zwitterionic or cationic surfactant is applied to the fabric in a wet-in-wet procedure during or immediately after the water-jet consolidation, and the fabric is dried; these procedures are performed continuously. A polyester or a polyamide is used preferentially as the polymeric material.

Description

Die Erfindung betrifft ein Verfahren zur Her­stellung von verfestigten Vliesen für die Auf­nahme von Wasser und/oder Substanzen mit oleo­philen und/oder lipophilen Eigenschaften durch Blasspinnen einer Schmelze oder einer Lösung eines spinnbaren polymeren Materials mit Hilfe eines Dü­denkopfs, der eine Düsenöffnung oder mehrere Düsen­öffnungen aufweist, zu Spinnfasern und/oder Fila­menten, Umformen dieser Spinnfasern und/oder Fila­mente zu einem Vlies durch Ablage auf einer Auf­nahmevorrichtung, Verfestigen dieses Vlieses und Aufbringen eines Benetzungsmittels auf das Vlies. Die Erfindung betrifft auch verfestigte Vliese für die Aufnahme von Wasser und/oder Substanzen mit oleophilen und/oder lipophilen Eigenschaften.The invention relates to a process for the production of consolidated nonwovens for the absorption of water and / or substances with oleophilic and / or lipophilic properties by blow spinning a melt or a solution of a spinnable polymeric material with the aid of a nozzle head which has one nozzle opening or several nozzle openings. to staple fibers and / or filaments, forming these staple fibers and / or filaments into a fleece by placing them on a receiving device, solidifying this fleece and applying a wetting agent to the fleece. The invention also relates to consolidated nonwovens for the absorption of water and / or substances with oleophilic and / or lipophilic properties.

Es ist bekannt, verfestigte Vliese für die Auf­nahme von Wasser und/oder Öl durch Schmelz-Blas-­Spinnen von Polypropylen zu Faserbahnen, deren Fasern einen mittleren Durchmesser bis zu 10 µm aufweisen, Musterbinden mit Stiften der Faserbahnen und Aufsprühen einer anionischen oder nichtioni­schen oberflächenaktiven Substanz auf die Faser­bahnen herzustellen.It is known to consolidate nonwovens for the absorption of water and / or oil by melt-blow spinning polypropylene into fiber webs, the fibers of which have an average diameter of up to 10 μm, pattern binding with pins of the fiber webs and spraying on an anionic or nonionic surface-active substance to produce on the fiber webs.

Die bekannten Vliese dieser Art zeigen jedoch fol­gende Nachteile:
- Durch das Musterbinden mit Stiften wird die für die Aufnahme von Wasser und/oder Öl wirksame Oberfläche der Vliese erheblich verringert.
- Da die Musterbindung mit Stiften nicht voll­flächig erfolgen kann, weil sonst die für die Aufnahme von Wasser und/oder Öl wirksame Ober­fläche der Vliese vollständig verloren geht, weisen solche teilmustergebundenen Vliese nur relativ geringe Festigkeiten, wie Höchstzug­kraft, Einreißfestigkeit und Weiterreißfestig­keit, sowie einen relativ hohen Abrieb auf.
- Durch das Musterbinden kann die ursprüngliche zweidimensionale Anordnung der Fasern, d.h. die Anordnung der Fasern in Quer- und Längsrichtung, im Vlies nicht verändert werden; dadurch ist nicht nur keine Verbesserung der Vliese in Bezug auf den - textilen - Fall und Griff und die Weichheit mög­lich, sondern es tritt sogar diesbezüglich eine deutliche Verschlechterung ein.However, the known nonwovens of this type have the following disadvantages:
- The pattern binding with pins significantly reduces the surface of the nonwovens that is effective for absorbing water and / or oil.
- Since the pattern binding with pins cannot be carried out over the entire surface, because otherwise the surface of the nonwovens that is effective for absorbing water and / or oil will be completely lost, such nonwoven webs that have been bound to part of the pattern have only relatively low strengths, such as maximum tensile strength, tear strength and tear resistance, and a relative strength high abrasion.
- The pattern binding cannot change the original two-dimensional arrangement of the fibers, ie the arrangement of the fibers in the transverse and longitudinal directions, in the fleece; not only is it not possible for the nonwovens to improve in terms of the - textile - case and feel and softness, but there is even a significant deterioration in this regard.

Der Erfindung liegt die Aufgabe zugrunde, ein Ver­fahren der eingangs beschriebenen Gattung zu schaf­fen, mit dem Vliese gewonnen werden können, die
- gegenüber den bekannten Vliesen dieser Art eine größere wirksame Oberfläche für die Aufnahme von Wasser und/oder Ölen, Fetten und dergleichen be­sitzen,
- gegenüber den bekannten Vliesen dieser Art ver­besserte Festigkeitseigenschaften, wie eine ver­besserte Höchstzugkraft, Einreißfestigkeit und Weiterreißfestigkeit, sowie einen geringeren Abrieb aufweisen und
- gegenüber den bekannten Vliesen dieser Art einen besseren textilen Fall und Griff und eine verbesserte Weichheit besitzen.The invention has for its object to provide a method of the type described above with which nonwovens can be obtained
have a larger effective surface for absorbing water and / or oils, fats and the like compared to the known nonwovens of this type,
- Compared to the known nonwovens of this type, they have improved strength properties, such as an improved maximum tensile force, tear resistance and tear resistance, as well as less abrasion and
- have a better textile case and handle and improved softness compared to the known nonwovens of this type.

Diese Aufgabe wird erfindungsgemäß bei einem Ver­fahren der eingangs genannten Art durch die im Kennzeichen des Anspruchs 1 angegebenen Merkmale gelöst.This object is achieved in a method of the type mentioned by the features specified in the characterizing part of claim 1.

Vorteilhaft Ausführungsformen des erfindungsge­mäßen Verfahrens sind in den Ansprüchen 2, 3, 4, 5 und 6 angegeben.Advantageous embodiments of the method according to the invention are specified in claims 2, 3, 4, 5 and 6.

Die Ausführungsformen gemäß den Ansprüchen 2 und 3 bieten folgende Vorteile:
- Die erhaltenen Vliese können bei hohen Tempera­turen,z.B. deutlich über 150° C, getrocknet wer­den und sind für die Aufnahme von Wasser und/oder Substanzen mit oleophilen und/oder lipophilen Eingenschaften auch bei solchen hohen Temperaturen einsetzbar.
- Die erhaltenen Vliese zeigen sehr hohe Festig­keiten, insbesondere eine hohe Höchstzugkraft, Einreißfestigkeit und Weiterreißfestigkeit.The embodiments according to claims 2 and 3 offer the following advantages:
- The nonwovens obtained can be dried at high temperatures, for example significantly above 150 ° C., and can also be used to absorb water and / or substances with oleophilic and / or lipophilic properties even at such high temperatures.
- The nonwovens obtained show very high strengths, in particular a high maximum tensile strength, tear resistance and tear resistance.

Die Ausführungensform gemäß Anspruch 4 bietet den Vorteil, daß die erhaltenen Vliese auf Grund der Feinheit der Spinnfasern und Filamente, also wegen ihres geringen Durchmessers und damit hoher spezi­fischer Oberfläche, eine sehr große wirksame Ober­fläche für die Aufnahme von Wasser und/oder Sub­stanzen mit oleophilen und/oder lipophilen Eigen­schaften aufweisen.The embodiment according to claim 4 has the advantage that the nonwovens obtained have a very large effective surface for the absorption of water and / or substances with oleophilic and because of the fineness of the staple fibers and filaments, that is because of their small diameter and thus high specific surface area / or have lipophilic properties.

Die Ausführungsform gemäß Anspruch 5 bietet den Vorteil, daß die eingesetzten Tenside biologisch abbaubar und sehr gut hautverträglich sind.The embodiment according to claim 5 offers the advantage that the surfactants used are biodegradable and very well tolerated by the skin.

Die Ausführungsform gemäß Anspruch 6 bietet den Vorteil, daß die eingesetzten Tenside spezielle Aufgaben lösen können, beispielsweise in der Me­tallbehandlung, wo Korrosionsschutz und rasche Trocknung wichtig sind.The embodiment according to claim 6 offers the advantage that the surfactants used can solve special tasks, for example in metal treatment, where corrosion protection and rapid drying are important.

Der Erfindung liegt auch die Aufgabe zugrunde, verfestigte Vliese der eingangs beschriebenen Gattung zur Verfügung zu stellen, die
- gegenüber den bekannten Vliesen dieser Art eine größere wirksame Oberfläche für die Aufnahme von Wasser und/oder Ölen, Fetten und dergleichen be­sitzen,
- gegenüber den bekannten Vliesen dieser Art ver­besserte Festigkeitseigenschaften, wie eine ver­besserte Höchstzugkraft, Einreißfestigkeit und Weiterreißfestigkeit, sowie einen geringeren Abrieb aufweisen und
- gegenüber den bekannten Vliesen dieser Art einen besseren textilen Fall und Griff und eine ver­besserte Weichheit besitzen.The invention is also based on the object to provide consolidated nonwovens of the type described at the outset
have a larger effective surface for absorbing water and / or oils, fats and the like compared to the known nonwovens of this type,
- Compared to the known nonwovens of this type, they have improved strength properties, such as an improved maximum tensile force, tear resistance and tear resistance, as well as less abrasion and
- have a better textile case and handle and improved softness compared to the known nonwovens of this type.

Diese Aufgabe wird erfindungsgemäß bei den eingangs genannten verfestigten Vliesen durch die im Kenn­zeichen des Anspruchs 7 angegebenen Merkmale ge­löst.This object is achieved according to the invention in the consolidated nonwovens mentioned above by the features specified in the characterizing part of claim 7.

Für die Zwecke der Erfindung können als spinnbare polymere Materialien alle die, die durch Schmelz­spinnen oder Lösungsspinnen (Trockenspinnen) ver­arbeitbar sind, eingesetzt werden; geeignet sind insbesondere Polyester, wie Polyethylenterephthalat, sowie Polyamide, wie Polyamid-66, aber auch bei­spielswiese Polyolefine, wie Polyethylen und Poly­propylen, Celluloseester, wie Cellulose-2,5-Acetat und -Triacetat, und Acrylpolymeren, wie Polyacryl­nitril.For the purposes of the invention, all those which can be processed by melt spinning or solution spinning (dry spinning) can be used as spinnable polymeric materials; Particularly suitable are polyesters, such as polyethylene terephthalate, and polyamides, such as polyamide-66, but also, for example, polyolefins, such as polyethylene and polypropylene, cellulose esters, such as cellulose-2,5-acetate and triacetate, and acrylic polymers, such as polyacrylonitrile.

Nach dem erfindungsgemäßen Verfahren wird eine Schmelze oder eine Lösung eines spinnbaren poly­meren Materials zu Spinnfasern und/oder Filamenten blas-versponnen. Ein solches Blas-Spinnen ist bei­spielsweise in "Industrial and Engineering Chemistry", Band 48, No. 8 (1956), Seiten 1342 bis 1346, und in der deutschen Patentschrift 19 64 060 beschrieben.According to the method according to the invention, a melt or a solution of a spinnable polymeric material is blow-spun into staple fibers and / or filaments. Such blow-spinning is described, for example, in "Industrial and Engineering Chemistry", volume 48, no. 8 (1956), pages 1342 to 1346, and in German Patent 19 64 060.

Substanzen mit oleophilen und/oder lipophilen Ei­genschaften sind z.B. Öle, wie Mineralöle oder Silikonöle, und Fette oder deren Gemische.Substances with oleophilic and / or lipophilic properties are e.g. Oils, such as mineral oils or silicone oils, and fats or mixtures thereof.

Nach der Erfindung erfolgt das Verfestigen des Vlieses mit Hilfe von Wasserstrahlen. Eine solche Wasserstrahlverfestigung ist beispielsweise in der deutschen Offenlegungsschrift 17 10 989 und in der deutschen Auslegeschrift 16 35 577 beschrie­ben.According to the invention, the fleece is solidified with the help of water jets. Such water jet consolidation is described, for example, in German Offenlegungsschrift 17 10 989 and in German Auslegeschrift 16 35 577.

Die Wasserstrahlverfestigung bewirkt eine Verwir­belung und Nachverstreckung der Spinnfasern und/­oder Filamente innerhalb des Vlieses, wodurch
- zusätzliche wirksame Oberfläche für die Aufnahme von Wasser und/oder Substanzen mit oleophilen und/oder lipophilen Eigenschaften gewonnen wird,
- das Vlies verbesserte Festigkeitseigenschaften erhält und einem geringeren Abrieb aufweist und
- das Vlies eine Verbesserung des textilen Falls und Griffs und der Weichheit erfährt.The water jet consolidation causes a swirling and post-stretching of the staple fibers and / or filaments within the fleece, thereby
additional effective surface for the absorption of water and / or substances with oleophilic and / or lipophilic properties is obtained,
- The fleece receives improved strength properties and has less abrasion and
- The fleece experiences an improvement in the textile fall and feel and softness.

Gemäß der Erfindung wird als Benetzungsmittel ein zwitterionisches oder ein kationisches Tensid auf das Vlies aufgebracht. Geeignete zwitterionische Tenside sind insbesondere Aminoxide und Betaine, aber auch Imidazolincarboxylate und Aminocarbon­säuren. Geeignete kationische Tenside sind bei­spielsweise primäre, sekundäre, tertiäre oder quar­ternäre Ammoniumsalze, Benzylammoniumsalze, Al­kanolammoniumsalze, Pyridiniumsalze, Imidazolinium­salze, Oxazoliniumsalze, Thiazoliniumsalze, Sul­foniumsalze, Chinoliumsalze, Salze von Aminoxiden, Tropyliumsalze und Isochinoliniumsalze. Gegebenen­falls können auch Mischungen derselben verwendet werden.According to the invention, a zwitterionic or a cationic surfactant is applied to the nonwoven as a wetting agent. Suitable zwitterionic surfactants are in particular amine oxides and betaines, but also imidazoline carboxylates and aminocarboxylic acids. Suitable cationic surfactants are, for example, primary, secondary, tertiary or quaternary ammonium salts, benzylammonium salts, alkanolammonium salts, pyridinium salts, imidazolinium salts, oxazolinium salts, thiazolinium salts, sulfonium salts, quinolium salts, salts of amine oxides, tropinium salts and isochlorine salts. If necessary, mixtures of the same can also be used.

Die erfindungsgemäßen Vliese können beispielsweise als Rollenware oder in davon abgepaßten Stücken in industriellen oder nicht-industriellen Bereichen für Reinigungszwecke eingesetzt werden; wesentlich ist, daß sowohl Wasser als auch Substanzen mit oleophilen und/oder lipophilen Eigenschaften von den Vliesen aufgenommen werden können.The nonwovens according to the invention can be used, for example, as roll goods or in pieces adapted therefrom in industrial or non-industrial areas for cleaning purposes; it is essential that both water and substances with oleophilic and / or lipophilic properties can be absorbed by the nonwovens.

Die Erfindung wird nachstehend anhand der Beispiele näher erläutert:The invention is explained in more detail below with the aid of the examples:

Beispiel 1 example 1

Polyethylenterephthalat mit einer Intrinsic-Viskosi­tät von 0,67 (gemessen in Tetrachlorethan-Phenol 1:1), einer Schmelzviskosität von 2.400 dPa.s und einem Wassergehalt von 0,1 Gewichtsprozent wurde bei 323°C geschmolzen und mit Hilfe eines Spinnkopfs (Düsenkopfs) ähnlich dem gemäß der deutschen Patentschrift 25 50 463 zu Spinnfasern und Filamenten, die einen mittleren Durchmesser von 1,8 µm aufwiesen, schmelz-blas-versponnen. Die Spinnfasern und Filamente wurden durch Ablage auf einer Aufnahmevorrichtung, die aus einer ro­tierenden Trommel bestand, zu einem Vlies mit ei­nem Flächengewicht von 100 g/m² umgeformt. Der Düsenkopf befand sich oberhalb der rotierenden Trommel, und es wurde senkrecht nach unten gespon­nen.Polyethylene terephthalate with an intrinsic viscosity of 0.67 (measured in tetrachloroethane phenol 1: 1), a melt viscosity of 2,400 dPa.s and a water content of 0.1 percent by weight was melted at 323 ° C and using a spinning head (nozzle head) similar to that according to German Patent 25 50 463 to staple fibers and filaments, the one had an average diameter of 1.8 µm, melt-blow-spun. The staple fibers and filaments were formed into a fleece with a basis weight of 100 g / m 2 by being placed on a holding device which consisted of a rotating drum. The nozzle head was above the rotating drum and it was spun vertically downwards.

Über Führungswalzen wurde das Vlies, das eine Breite von 200 mm hatte, auf ein umlaufendes End­lossiebband geführt, das Teil einer Wasserstrahl­verfestigungsvorrichtung war, die im Prinzip der gemäß der deutschen Auslegeschrift 16 35 577 ent­sprach.The fleece, which had a width of 200 mm, was guided over guide rollers onto a continuous endless sieve belt, which was part of a water jet consolidation device, which in principle corresponded to that in accordance with German patent specification 16 35 577.

Die Wasserstrahlverfestigungsvorrichtung verfügte über acht Wasserdüsenreihen, die oberhalb des Vlieses und in einem Winkel von 90° zur Laufrich­tung des Vlieses angeordnet waren. Jede Wasser­düsenreihe hatte eine Länge (wirksame Strahlbrei­te) von 200 mm und verfügte jeweils über 100 Dü­senbohrungen. Der Abstand der Düsen zum Vlies be­trug 10 mm und vor jeder Düse herrschte ein Was­serdruck von 120 bar. Die Wasserstrahlen bildeten einen Winkel von 90° mit dem Vlies.The water jet consolidation device had eight rows of water nozzles, which were arranged above the fleece and at an angle of 90 ° to the running direction of the fleece. Each row of water nozzles had a length (effective jet width) of 200 mm and each had 100 nozzle bores. The distance between the nozzles and the fleece was 10 mm and there was a water pressure of 120 bar in front of each nozzle. The water jets formed an angle of 90 ° with the fleece.

Durch anschließendes Hindurchführen des Vlieses durch Quetschwalzen wurde das Prozeßwasser bis auf einen Restfeuchtegehalt des Vlieses von 100 % entfernt.The process water was then removed to a residual moisture content of the fleece of 100% by subsequently passing the fleece through squeeze rolls.

Unmittelbar danach erfolgte das Aufbringen des Be­netzungsmittels durch Führen des Vlieses über eine strukturierte Netzwalze.Immediately afterwards, the wetting agent was applied by passing the fleece over a structured net roll.

Das Benetzungsmittel war 1-Alkoylamino-3-dimethyl­amino-propan-3-N-oxid. Die Naßaufnahme (Flüssig­keitsaufnahme) des Vlieses betrug dabei 100 % des Ausgangs-Trockengewichts dieses Vlieses. Das Bad des Benetzungsmittels hatte eine Konzentration von 0,5 Gewichtsprozent des zuvor genannten Benetzungs­mittels; dadurch erhielt das Vlies einen Gehalt von 0,5 Gewichtsprozent an Benetzungsmittel, bezogen auf das Trockengewicht des Vlieses.The wetting agent was 1-alkoylamino-3-dimethylamino-propane-3-N-oxide. The wet absorption (liquid absorption) of the fleece was 100% of the initial dry weight of this fleece. The wetting agent bath had a concentration of 0.5 weight percent of the aforementioned wetting agent; this gave the fleece a content of 0.5% by weight of wetting agent, based on the dry weight of the fleece.

Von der Netzwalze wurde das Vlies durch einen Trok­kenofen, wo es bis auf einen Restfeuchtegehalt von circa 1 % getrocknet wurde, geführt und anschließend auf Hülsen aufgewickelt.The fleece was guided from the netting roller through a drying oven, where it was dried to a residual moisture content of approximately 1%, and then wound onto tubes.

Die Verfahrensgeschwindigkeit, also die Geschwin­digkeit, mit der das Vlies die genannten Verfahrens­stufen kontinuierlich durchlief, betrug 2 m/min. Das erhaltene verfestigte Vlies wies ein Höchst­zugkraft (gemessen nach DIN 53857) in Längsrich­tung von 8,3 daN und in Querrichtung von 4,5 daN auf.The process speed, that is to say the speed at which the nonwoven ran continuously through the process steps mentioned, was 2 m / min. The solidified nonwoven obtained had a maximum tensile force (measured according to DIN 53857) in the longitudinal direction of 8.3 daN and in the transverse direction of 4.5 daN.

Die für die Aufnahme von Wasser und/oder Ölen und/oder Fetten und dergleichen wirksame spezifi­sche Spinnfaser-/Filamentoberfläche dieses Vlieses betrug 1,6 m²/g (gemessen nach der BET-Methode) entsprechend 160 m² Oberfläche pro m² Vlies. Die Ölaufnahmefähigkeit dieses Vlieses (gemessen nach der Ölbinderrichtlinie des Bundesministeriums des Inneren in der Fassung von 31. Dezember 1985) betrug 4,3 g Öl pro g Vlies.The specific spun fiber / filament surface of this fleece effective for the absorption of water and / or oils and / or fats and the like was 1.6 m² / g (measured according to the BET method), corresponding to 160 m² surface per m² fleece. The oil absorption capacity of this fleece (measured according to the oil binding directive of the Federal Ministry of the Interior as amended on December 31, 1985) was 4.3 g of oil per g of fleece.

Die Wasseraufnahmefähigkeit dieses Vlieses (gemes­sen in Anlehnung an die zuvor genannte Ölbinder­richtlinie) betrug 5,8 g Wasser pro g Vlies. Ferner hatte das erhaltene verfestigte Vlies ei­nen angenehmen weichen textilen Griff und einen guten Fall.The water absorption capacity of this fleece (measured in accordance with the aforementioned oil binder directive) was 5.8 g of water per g of fleece. Furthermore, the solidified nonwoven obtained had a pleasant soft textile feel and a good fall.

Beispiel 2Example 2

Das Beispiel 1 wurde wiederholt, allerdings mit dem Unterschied, daß
- das Aufbringen des Benetzungsmittels nicht durch Führen des Vlieses über eine strukturierte Netz­walze erfolgte, sondern dadurch, daß dieses Mit­tel über die Wasserstrahlverfestigungsvorrichtung - im Prozeßwasser zu 0,3 Gewichtsprozent gelöst enthalten - auf das Vlies aufgebracht wurde,
- als Benetzungsmittel nicht das im Beispiel 1 genannte, sondern ein Gemisch von Alkyl-dimethyl­-benzyl-ammoniumchloriden, das von der Firma Hoechst AG, Frankfurt/Main, Bundesrepublik Deutsch­land, unter der Marke Dodigen 226 vertrieben wird, eingesetzt wurde,
- das Prozeßwasser nach der Wasserstrahlverfesti­gung durch Hindurchführen des Vlieses durch Quetschwalzen bis auf einen Restfeuchtegehalt des Vlieses von 200 % entfernt wurde, wodurch das Vlies einen Gehalt von 0,6 Gewichtsprozent an Benetzungsmittel, bezogen auf das Trockengewicht des Vlieses, erhielt,
- das Vlies unmittelbar nach dem Entfernen des Prozeßwassers durch Führen durch einen Trocken­ofen bis auf einen Restfeuchtegehalt von circa 1 % getrocknet wurde.Example 1 was repeated, with the difference that
the wetting agent was not applied by passing the nonwoven over a structured network roller, but rather by applying this agent to the nonwoven via the water jet consolidation device - contained in the process water at 0.3 percent by weight -
the wetting agent used was not the one mentioned in Example 1 but a mixture of alkyldimethylbenzylammonium chlorides, which is marketed by Hoechst AG, Frankfurt / Main, Federal Republic of Germany, under the Dodigen 226 brand,
the process water was removed after the water jet consolidation by passing the fleece through squeeze rollers to a residual moisture content of the fleece of 200%, whereby the fleece obtained a content of 0.6% by weight of wetting agent, based on the dry weight of the fleece,
- The fleece was dried to a residual moisture content of approximately 1% immediately after removal of the process water by passing it through a drying oven.

Das erhaltene verfestigte Vlies entsprach in sei­nen übrigen Eigenschaften denjenigen des Vlieses nach Beispiel 1.The other properties of the solidified nonwoven obtained corresponded to those of the nonwoven according to Example 1.

Die Erfindung weist folgende Vorteile auf:The invention has the following advantages:

Die erfindungsgemäß hergestellten verfestigten Vliese besitzen
- eine größere wirksame Oberfläche für die Aufnahme von Wasser und/oder Ölen, Fetten und dergleichen,
- verbesserte Festigkeitseigenschaften und einen geringeren Abrieb und
- einen besseren textilen Fall und Griff und eine verbesserte Weichheit
im Vergleich zu den bekannten verfestigten Vliesen für die Aufnahme von Wasser und/oder Substanzen mit oleophilen und/oder lipophilen Eigenschaften.The consolidated nonwovens produced according to the invention have
- a larger effective surface for the absorption of water and / or oils, fats and the like,
- Improved strength properties and less abrasion and
- a better textile case and grip and an improved softness
compared to the known consolidated nonwovens for the absorption of water and / or substances with oleophilic and / or lipophilic properties.

Claims (7)

1. Verfahren zur Herstellung von verfestigten Vliesen für die Aufnahme von Wasser und/oder Substanzen mit oleophilen und/oder lipophilen Eigenschaften durch Blasspinnen einer Schmelze oder einer Lösung eines spinnbaren polymeren Materials mit Hilfe eines Düsenkopfs, der eine Düsenöffnung oder mehrere Düsenöffnungen auf­weist, zu Spinnfasern und/oder Filamenten, Um­formen dieser Spinnfasern und/oder Filamente zu einem Vlies durch Ablage auf einer Aufnahme­vorrichtung, Verfestigen dieses Vlieses und Aufbringen eines Benetzungsmittels auf das Vlies, dadurch gekennzeichnet, daß Spinnfasern und/oder Filamente mit einem Durchmesser von jeweils 0,1 bis 6 µm ersponnen werden, das Verfestigen des Vlieses mit Hilfe von Wasserstrahlen erfolgt, während oder unmittelbar nach dieser Wasser­strahlverfestigung als Benetzungsmittel ein zwitterionisches oder ein kationisches Tensid in einer Naß-in-Naß-Arbeitsweise auf das Vlies aufgebracht und das Vlies anschließend getrocknet wird, wobei diese Arbeitsgänge kontinuierlich durchgeführt werden.1. Process for the production of consolidated nonwovens for the absorption of water and / or substances with oleophilic and / or lipophilic properties by blow-spinning a melt or a solution of a spinnable polymeric material with the aid of a nozzle head which has one nozzle opening or several nozzle openings, to form staple fibers and / or filaments, forming these staple fibers and / or filaments into a fleece by placing them on a holding device, solidifying this fleece and applying a wetting agent to the fleece, characterized in that staple fibers and / or filaments with a diameter of 0.1 to 6 microns are spun, the fleece is consolidated with the help of water jets, while or immediately after this water jet consolidation, a zwitterionic or a cationic surfactant is applied to the fleece in a wet-on-wet procedure and the fleece is then dried, whereby this Arbeitsg can be performed continuously. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß als spinnbares polymeres Material ein Poly­ester oder ein Polyamid eingesetzt wird.2. The method according to claim 1, characterized in that a polyester or a polyamide is used as the spinnable polymeric material. 3. Verfahren nach Anspruch 1 oder 2, dadurch ge­kennzeichnet, daß als Polyester Polyethylen­terephthalat und als Polyamid Polyamid-66 ein­gesetzt wird.3. The method according to claim 1 or 2, characterized in that polyethylene terephthalate is used as polyester and polyamide-66 is used as polyamide. 4. Verfahren nach Anspruch 1,2 oder 3, dadurch ge­kennzeichnet, daß Spinnfasern und/oder Filamente mit einem Durchmesser von jeweils 0,5 bis 3 µm ersponnen werden.4. The method according to claim 1,2 or 3, characterized in that spun fibers and / or filaments with a diameter of 0.5 to 3 microns are spun. 5. Verfahren nach Anspruch 1, 2, 3 oder 4, dadurch gekennzeichnet, daß als Benetzungsmittel 1-Al­koylamino-3-dimethylamino-propan-3-N-oxid, Cocamidopropyl-betain oder 1-Alkoylamino-3-­dimethylammonio-propan-3-carboxymethylbetain eingesetzt wird.5. The method according to claim 1, 2, 3 or 4, characterized in that the wetting agent 1-alkoylamino-3-dimethylamino-propane-3-N-oxide, cocamidopropyl-betaine or 1-alkoylamino-3-dimethylammonio-propane-3 -carboxymethylbetaine is used. 6. Verfahren nach Anspruch 1, 2, 3 oder 4, dadurch gekennzeichnet, daß als Benetzungsmittel Alkyl­-dimethyl-benzyl-ammoniumchloride eingesetzt werden.6. The method according to claim 1, 2, 3 or 4, characterized in that alkyl-dimethyl-benzyl-ammonium chlorides are used as wetting agents. 7. Verfestigte Vliese für die Aufnahme von Wasser und/oder Substanzen mit oleophilen und/oder lipophilen Eigenschaften, dadurch gekennzeich­net, daß sie nach einem Verfahren gemäß Anspruch 1, 2, 3, 4, 5 oder 6 hergestellt worden sind.7. Solidified nonwovens for the absorption of water and / or substances with oleophilic and / or lipophilic properties, characterized in that they have been produced by a process according to claim 1, 2, 3, 4, 5 or 6.
EP87112311A 1986-09-06 1987-08-25 Method for making consolidated fibre fleeces, and consolidated fibre fleeces Expired - Lifetime EP0259692B1 (en)

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US3918995A (en) * 1972-12-21 1975-11-11 Grace W R & Co Battery separator and manufacturing process
EP0053221A2 (en) * 1980-11-27 1982-06-09 Firma Carl Freudenberg Absorbant disposable article

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FR2637163A1 (en) * 1988-10-04 1990-04-06 Inst Textile De France MICROFILAMENT-BASED THERMAL-ADHESIVE COVER
EP0363254A1 (en) * 1988-10-04 1990-04-11 Lainiere De Picardie Fusible interlining comprising microfilaments
DE3932032A1 (en) * 1989-09-26 1991-04-04 Peter Dr Kuhnle Absorbent textile sheet, esp. for prodn. of medical compresses - by laying raw cotton fibres into a mat, wetting with aq. detergent, compacting with a water jet, boiling, scouring, washing and/or bleaching
TR25696A (en) * 1990-07-12 1993-09-01 Picardie Lainiere MICROELYAF BASED THERMOCOLAN CLOTH.
FR2664623A1 (en) * 1990-07-12 1992-01-17 Inst Textile De France THERMAL-ADHESIVE COVERING BASED ON MICROFIBERS AND PROCESS FOR OBTAINING SAME.
EP0466563A1 (en) * 1990-07-12 1992-01-15 LAINIERE DE PICARDIE: Société anonyme Thermobonded lining material in microfibers and process for making the same
EP0491383A1 (en) * 1990-12-19 1992-06-24 Mitsubishi Paper Mills, Ltd. Nonwoven fabric and production method thereof
EP0602881A1 (en) * 1992-12-15 1994-06-22 The Dexter Corporation Wet wipe
EP0900869A2 (en) * 1997-09-05 1999-03-10 Fleissner GmbH & Co. Maschinenfabrik Process of manufacturing a hydroentangled nonwoven web, fabric and linning made therefrom
DE19739049A1 (en) * 1997-09-05 1999-03-11 Fleissner Maschf Gmbh Co Process for producing a hydrodynamically strengthened nonwoven, nonwoven after this production and carrier fleece after this production
EP0900869A3 (en) * 1997-09-05 1999-09-15 Fleissner GmbH & Co. Maschinenfabrik Process of manufacturing a hydroentangled nonwoven web, fabric and linning made therefrom
WO2014150434A1 (en) * 2013-03-15 2014-09-25 The Procter & Gamble Company Nonwoven substrates
RU2637100C2 (en) * 2013-03-15 2017-11-29 Дзе Проктер Энд Гэмбл Компани Nonwoven base

Also Published As

Publication number Publication date
NO162625C (en) 1990-01-24
EP0259692A3 (en) 1989-09-06
ATE69073T1 (en) 1991-11-15
US4818594A (en) 1989-04-04
DE3774218D1 (en) 1991-12-05
NO873713D0 (en) 1987-09-04
NO873713L (en) 1988-03-07
DE3630392C1 (en) 1988-02-11
EP0259692B1 (en) 1991-10-30
CA1311889C (en) 1992-12-29
ES2026501T3 (en) 1992-05-01
NO162625B (en) 1989-10-16

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