EP0687756B1 - Nonwoven reinforced with filaments - Google Patents

Nonwoven reinforced with filaments Download PDF

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Publication number
EP0687756B1
EP0687756B1 EP95108989A EP95108989A EP0687756B1 EP 0687756 B1 EP0687756 B1 EP 0687756B1 EP 95108989 A EP95108989 A EP 95108989A EP 95108989 A EP95108989 A EP 95108989A EP 0687756 B1 EP0687756 B1 EP 0687756B1
Authority
EP
European Patent Office
Prior art keywords
nonwoven
fabric
accordance
filaments
fabric sheeting
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.)
Revoked
Application number
EP95108989A
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German (de)
French (fr)
Other versions
EP0687756A2 (en
EP0687756A3 (en
Inventor
Leonardus Johannes Lucas
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.)
Akzo Nobel NV
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Akzo Nobel NV
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Application filed by Akzo Nobel NV filed Critical Akzo Nobel NV
Publication of EP0687756A2 publication Critical patent/EP0687756A2/en
Publication of EP0687756A3 publication Critical patent/EP0687756A3/en
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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
    • D04H3/14—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 yarns or filaments produced by welding
    • D04H3/147—Composite yarns or filaments
    • 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
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • D04H3/04—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments in rectilinear paths, e.g. crossing at right angles
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24058—Structurally defined web or sheet [e.g., overall dimension, etc.] including grain, strips, or filamentary elements in respective layers or components in angular relation
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24058—Structurally defined web or sheet [e.g., overall dimension, etc.] including grain, strips, or filamentary elements in respective layers or components in angular relation
    • Y10T428/24074—Strand or strand-portions
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24132—Structurally defined web or sheet [e.g., overall dimension, etc.] including grain, strips, or filamentary elements in different layers or components parallel
    • 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.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/637—Including strand or fiber material which is a monofilament composed of two or more polymeric materials in physically distinct relationship [e.g., sheath-core, side-by-side, islands-in-sea, fibrils-in-matrix, etc.] or composed of physical blend of chemically different polymeric materials or a physical blend of a polymeric material and a filler material
    • Y10T442/641—Sheath-core multicomponent strand or fiber material
    • 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.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/643—Including parallel strand or fiber material within the nonwoven fabric

Definitions

  • the invention relates to a filament-reinforced nonwoven web, the by integrated into the nonwoven web, reinforcement yarns running in parallel are reinforced is.
  • Such a nonwoven web is known from EP-A-0 506 051. It is used as an insert for bitumen membranes and as roofing membrane used.
  • binder solutions or dispersions or melt binder used to consolidate the fleeces and for connecting the nonwoven fabric with the reinforcing yarns.
  • melt binder used to consolidate the fleeces and for connecting the nonwoven fabric with the reinforcing yarns.
  • melt binder is either in the form of separate Binding filaments added to the nonwoven or at least one Part of the filaments of the reinforcement yarns consists of bi-component filaments, where the one component as Melt binder works.
  • the known nonwoven webs it has been shown that either the delamination properties not fully satisfied yet or that the breaking strength is not reached in height, like in itself due to the amount of reinforcing yarns used is to be expected.
  • the object of the present invention is a nonwoven web to make available of the type mentioned at the beginning, where delamination is also practical in smaller areas can no longer be determined, and that at a low level Grammage an exceptionally high stability having.
  • a filament reinforced Nonwoven web which is flocked into the nonwoven web integrated, parallel running reinforcement yarns reinforced is, the filaments forming the fleece A to the Crossing points with filaments B of the reinforcing yarns and at least in places over the filaments B.
  • a binder are connected to each other, which nonwoven web is characterized in that the filaments A des Fleece among themselves at their crossing points same binder are connected.
  • the reinforcing yarns are preferred at least predominantly in the longitudinal direction of the Nonwoven web arranged.
  • Reinforcement yarns should be present, which is then beneficial is that there are at least two droves in the nonwoven web cross integrated parallel reinforcement yarns. It has proven particularly useful here if at least one share predominantly in the longitudinal direction and another coulter at least predominantly arranged in the transverse direction of the fleece is.
  • the arrangement of crossed reinforcing yarns leads to a particularly good dimensional stability of the nonwoven web according to the invention. It also shows hardly any ripple on.
  • the reinforcement yarns can be arranged lengthways and crossways the number of reinforcing yarns per unit length, the strength and the module in the longitudinal and transverse directions are different or be set to the same height.
  • Arrangement of crossed reinforcing yarns can also the tear strength of the nonwoven web significantly improved become.
  • the nonwoven web according to the invention has a nonwoven weight between 50 and 300 g / m 2 .
  • a nonwoven web in which the binder for connecting the Filaments of the nonwoven with each other, the connection of the Filaments of the nonwoven with the filaments of the reinforcing yarns and the connection of the filaments of the reinforcing yarns serving with each other is in EP-A-0 506 051 not described. It must be looked at all the more surprisingly be that this measure delamination also in smaller areas is practically no longer observed and at the same time the stability is increased.
  • the nonwoven web according to the invention is particularly distinguished characterized in that the binder is a melt binder, whose melting temperature is lower than the melting temperature of filaments A and B of the nonwoven web.
  • the inventive Nonwoven web the filaments A of the nonwoven and the filaments B the reinforcing yarns from a similar, in particular consist of the same polymer. It is an advantage if for the filaments A of the nonwoven and / or for the Filaments B of reinforcing yarns bi-component filaments be used.
  • the task set according to the invention succeeds excellently, if in the nonwoven web the filaments A of the nonwoven and the filaments B of the reinforcing yarns made of bi-component filaments exist, the one component of Bi-component filament is the melt binder. Especially It is favorable here if the bi-component filaments Core-sheath filaments are where the sheath is the melt binder is.
  • the core component of the core-sheath filaments are suitable practically all meltable polymers, such as Polyethylene terephthalate, polypropylene, polyethylene, Polyamide, polyurethane or PVC.
  • the jacket component the same polymers are suitable, but towards them ensure that the jacket component has a melting point which is at least 10 ° C lower than that Melting point of the core component.
  • a particularly cheap one Polymer selection for the core-sheath filaments of the nonwoven web according to the invention results when polyester as core component and polyamide, especially polyamide 6, is used as a jacket component. This is preferred the sheath proportion in volume percent of the core-sheath filaments between 5% and 40%, in particular between 10% and 35%.
  • the posed Task solved particularly well when the distance is closer Reinforcement yarns between 2 and 30 mm, especially between 4 and 15 mm.
  • the nonwoven web according to the invention is still distinguished through a number of particularly favorable properties, the suitability of this nonwoven sheet as an insert for bitumen sheets or as a roofing membrane but also as Tufting reason for carpets makes it clear.
  • the modulus at 5% elongation is the one according to the invention
  • Nonwoven web preferred at least 170 N, in particular at least 190 N per 5 cm and per 100 g fleece weight.
  • the elongation at break can be found in the nonwoven web of the invention adjust well by using appropriate filaments combined with a binder ensuring the elongation at break become. However, the elongation at break can also be adjusted by suitable Selection of filaments A and / or filaments B accordingly can be set. The elongation at break is preferred between 15% and 70%. For bitumen sheeting, the Elongation at break slightly to 15% to 50% and for tufting base Set 30% to 65%.
  • the breaking strength is preferably between 300 and 600 N, in particular between 400 to 550 N per 5 cm and per 100 g, while the tear resistance values from 100 to 300 N, preferably from 130 to 250 N per 100 g.
  • the modulus, the elongation at break and the breaking strength are on a 5 cm wide strip where the reinforcement yarns run in the longitudinal direction at a pulling speed of 20 cm / min and a temperature of 21 ° C. (DIN 533 857).
  • the module can be in measured in every direction in which the reinforcing yarns run become.
  • the tear resistance is on a 5 cm wide Strip, in which the reinforcing yarns in the transverse direction run at a drawing speed of 10 cm / min and a temperature of 21 ° C determined (DIN 53 363).
  • the tear resistance of reinforcing yarns that cross over each transverse to the direction of the reinforcing yarns be measured.
  • the nonwoven web according to the invention also has a excellent mechanical stability at high temperature on.
  • the mechanical stability at high temperature in The longitudinal and transverse directions are determined as follows: On a strip 60 cm long and 10 cm wide centered a 10 cm long and 8 cm wide rectangle, the longer side being arranged in the longitudinal direction is. The strip is attached between two clamps in such a way that the free length between the clamps is about 25 cm is. After a 10 minute treatment in one Oven heated to 180 ° C under a load of 57 N. the dimensions of the recorded rectangle are measured. The difference to the original length or width of the recorded rectangle is in proportion to the original Length or width set and specified in%.
  • the nonwoven web according to the invention preferably has a stability S 1 in the longitudinal direction, wherein 4.2 - 0.015 * G ⁇ S 1 > 0 and where G is the total weight of the nonwoven web in g / m 2 .
  • a transverse stability being - 4.8 + 0.017 * G ⁇ S q ⁇ 0 and where G is the total weight of the nonwoven web in g / m 2 , is another preferred embodiment of the nonwoven web according to the invention.
  • Bicomponent filaments of the core-shell type in which the core consists of polyethylene terephthalate and the shell made of polyamide 6, are produced in a known manner in such a way that they have a core fraction of 73 vol% and a shell fraction of 27 vol% exhibit.
  • the core-sheath filaments are then drawn and then have a breaking strength of 36 cN / tex, an elongation at break of 64% and a titer of 1,650 dtex.
  • the core-sheath filaments are deposited in a known manner on a moving steel fabric belt, the feed speed of the core-sheath filaments 358 m / min (example 1) or 376 m / min (example 2) and the speed of the moved Steel mesh belt is 20 m / min (example 1) or 13 m / min (example 2).
  • 143 m 2 yarns per meter are placed on the core-sheath filaments, which are evenly laid in a tangle, at the same speed as the moving steel fabric belt, each yarn consisting of 110 core-sheath filaments of the same type with which the first tangle layer was produced.
  • a further layer of core-sheath filaments of the same type is fed onto the structure that has now arisen in the same way as the first layer, as a result of which they are arranged in a tangled position on the first tangled layer and the yarns which are now parallel.
  • Hot air is then blown onto the resulting structure at a temperature of 224 ° C. through the structure and the steel mesh belt.
  • this thermal treatment which is followed by cooling, the filament-reinforced nonwoven web that has now formed is consolidated.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)

Description

Die Erfindung betrifft eine filamentverstärkte Vliesstoffbahn, die durch Scharen von in die Vliesstoffbahn integrierten, parallel laufenden Verstärkungsgarnen verstärkt ist.The invention relates to a filament-reinforced nonwoven web, the by integrated into the nonwoven web, reinforcement yarns running in parallel are reinforced is.

Eine derartige Vliesstoffbahn ist aus EP-A-0 506 051 bekannt. Sie wird als Einlage für Bitumenbahnen sowie als Dachunterspannbahn eingesetzt. Zur Verfestigung der Vliese und zur Verbindung des Vliesstoffes mit den Verstärkungsgarnen werden entweder Bindemittel-Lösungen oder -Dispersionen oder Schmelzbinder eingesetzt. Im Falle von Schmelzbinder wird der Schmelzbinder entweder in Form von separaten Bindefilamenten dem Vliesstoff zugegeben oder zumindest ein Teil der Filamente der Verstärkungsgarne besteht aus Bi-Komponenten-Filamenten, wobei die eine Komponente als Schmelzbinder fungiert. Bei den bekannten Vliesstoffbahnen hat es sich gezeigt, daß entweder die Delaminationseigenschaften noch nicht ganzflächig voll zufrieden stellen oder daß die Bruchfestigkeit nicht in der Höhe erreicht wird, wie an sich aufgrund der Menge der eingesetzten Verstärkungsgarne zu erwarten ist.Such a nonwoven web is known from EP-A-0 506 051. It is used as an insert for bitumen membranes and as Roofing membrane used. To consolidate the fleeces and for connecting the nonwoven fabric with the reinforcing yarns are either binder solutions or dispersions or melt binder used. In the case of melting binders the melt binder is either in the form of separate Binding filaments added to the nonwoven or at least one Part of the filaments of the reinforcement yarns consists of bi-component filaments, where the one component as Melt binder works. In the known nonwoven webs it has been shown that either the delamination properties not fully satisfied yet or that the breaking strength is not reached in height, like in itself due to the amount of reinforcing yarns used is to be expected.

Aufgabe der vorliegenden Erfindung ist es, eine Vliesstoffbahn der eingangs genannten Art zur Verfügung zu stellen, bei der eine Delamination auch in kleineren Bereichen praktisch nicht mehr festgestellt werden kann, und die bei geringem Flächengewicht eine außergewöhnlich hohe Stabilität aufweist.The object of the present invention is a nonwoven web to make available of the type mentioned at the beginning, where delamination is also practical in smaller areas can no longer be determined, and that at a low level Grammage an exceptionally high stability having.

Gelöst wird diese Aufgabe durch eine filamentverstärkte Vliesstoffbahn, die durch Scharen von in die Vliesstoffbahn integrierten, parallel laufenden Verstärkungsgarnen verstärkt ist, wobei die das Vlies bildenden Filamente A an den Kreuzungsstellen mit Filamenten B der Verstärkungsgarne und zumindest stellenweise die Filamente B untereinander über einen Binder miteinander verbunden sind, welche Vliesstoffbahn sich dadurch auszeichnet, daß auch die Filamente A des Vliesstoffes untereinander an ihren Kreuzungsstellen über denselben Binder verbunden sind. Bevorzugt sind die Verstärkungsgarne zumindest überwiegend in Längsrichtung der Vliesstoffbahn angeordnet.This task is solved by a filament reinforced Nonwoven web, which is flocked into the nonwoven web integrated, parallel running reinforcement yarns reinforced is, the filaments forming the fleece A to the Crossing points with filaments B of the reinforcing yarns and at least in places over the filaments B. a binder are connected to each other, which nonwoven web is characterized in that the filaments A des Fleece among themselves at their crossing points same binder are connected. The reinforcing yarns are preferred at least predominantly in the longitudinal direction of the Nonwoven web arranged.

Es können aber auch mehrere Scharen von parallellaufenden Verstärkungsgarnen vorhanden sein, wobei es dann von Vorteil ist, daß sich mindestens zwei Scharen der in die Vliesstoffbahn integrierten parallelen Verstärkungsgarne kreuzen. Hierbei hat es sich besonders bewährt, wenn eine Schar zumindest überwiegend in Längsrichtung und eine andere Schar zumindest überwiegend in Querrichtung des Vlieses angeordnet ist. Die Anordnung von sich überkreuzenden Verstärkungsgarnen führt zu einer besonders guten Formstabilität der erfindungsgemäßen Vliesstoffbahn. Sie weist auch kaum Welligkeit auf. Durch entsprechendes Auswählen der Kreuzungswinkel der Verstärkungsgarne kann die Zugfestigkeit und der Modul der erfindungsgemäßen Vliesstoffbahn in bestimmten Richtungen beeinflußt werden. Werden beispielsweise die Verstärkungsgarne längs und quer angeordnet, kann durch die Anzahl der Verstärkungsgarne pro Längeneinheit, die Festigkeit und der Modul in Längs- und Querrichtung unterschiedlich oder auch gleich hoch eingestellt werden. Durch Anordnung sich überkreuzender Verstärkungsgarne kann auch die Weiterreißfestigkeit der Vliesstoffbahn deutlich verbessert werden.However, it is also possible to have several groups of parallel ones Reinforcement yarns should be present, which is then beneficial is that there are at least two droves in the nonwoven web cross integrated parallel reinforcement yarns. It has proven particularly useful here if at least one share predominantly in the longitudinal direction and another coulter at least predominantly arranged in the transverse direction of the fleece is. The arrangement of crossed reinforcing yarns leads to a particularly good dimensional stability of the nonwoven web according to the invention. It also shows hardly any ripple on. By selecting the Crossing angle of the reinforcing yarns can reduce the tensile strength and the module of the nonwoven web according to the invention in certain Directions are affected. For example the reinforcement yarns can be arranged lengthways and crossways the number of reinforcing yarns per unit length, the strength and the module in the longitudinal and transverse directions are different or be set to the same height. By Arrangement of crossed reinforcing yarns can also the tear strength of the nonwoven web significantly improved become.

Es ist von Vorteil, wenn die erfindungsgemäße Vliesstoffbahn ein Vliesgewicht zwischen 50 und 300 g/m2 aufweist.It is advantageous if the nonwoven web according to the invention has a nonwoven weight between 50 and 300 g / m 2 .

Eine Vliesstoffbahn bei der der Binder zur Verbindung der Filamente des Vliesstoffes untereinander, der Verbindung der Filamente des Vliesstoffes mit den Filamenten der Verstärkungsgarne und der Verbindung der Filamente der Verstärkungsgarne untereinander dient, ist in der EP-A-0 506 051 nicht beschrieben. Umso überraschender muß es angesehen werden, daß durch diese Maßnahme eine Delamination auch in kleineren Bereichen praktisch nicht mehr beobachtet wird und gleichzeitig noch die Stabilität gesteigert wird.A nonwoven web in which the binder for connecting the Filaments of the nonwoven with each other, the connection of the Filaments of the nonwoven with the filaments of the reinforcing yarns and the connection of the filaments of the reinforcing yarns serving with each other is in EP-A-0 506 051 not described. It must be looked at all the more surprisingly be that this measure delamination also in smaller areas is practically no longer observed and at the same time the stability is increased.

Die erfindungsgemäße Vliesstoffbahn zeichnet sich insbesondere dadurch aus, daß der Binder ein Schmelzbinder ist, dessen Schmelztemperatur kleiner ist als die Schmelztemperatur der Filamente A und B der Vliesstoffbahn.The nonwoven web according to the invention is particularly distinguished characterized in that the binder is a melt binder, whose melting temperature is lower than the melting temperature of filaments A and B of the nonwoven web.

Besonders günstig ist es, wenn bei der erfindungsgemäßen Vliesstoffbahn die Filamente A des Vliesstoffes und die Filamente B der Verstärkungsgarne aus einem ähnlichen, insbesondere aus demselben Polymer bestehen. Es ist von Vorteil, wenn für die Filamente A des Vliesstoffes und/oder für die Filamente B der Verstärkungsgarne Bi-Komponenten-Filamente verwendet werden.It is particularly advantageous if the inventive Nonwoven web the filaments A of the nonwoven and the filaments B the reinforcing yarns from a similar, in particular consist of the same polymer. It is an advantage if for the filaments A of the nonwoven and / or for the Filaments B of reinforcing yarns bi-component filaments be used.

Die erfindungsgemäß gestellte Aufgabe gelingt vorzüglich, wenn bei der Vliesstoffbahn die Filamente A des Vliesstoffes und die Filamente B der Verstärkungsgarne aus Bi-KomponentenFilamenten bestehen, wobei die eine Komponente der Bi-Komponenten-Filamente der Schmelzbinder ist. Besonders günstig hierbei ist es, wenn die Bi-Komponenten-Filamente Kern-Mantel-Filamente sind, wobei der Mantel der Schmelzbinder ist.The task set according to the invention succeeds excellently, if in the nonwoven web the filaments A of the nonwoven and the filaments B of the reinforcing yarns made of bi-component filaments exist, the one component of Bi-component filament is the melt binder. Especially It is favorable here if the bi-component filaments Core-sheath filaments are where the sheath is the melt binder is.

Für die Kernkomponente der Kern-Mantel-Filamente eignen sich praktisch alle schmelzbaren Polymere, wie beispielsweise Polyäthylenterephthalat, Polypropylen, Polyäthylen, Polyamid, Polyurethan oder PVC. Für die Mantelkomponente eignen sich dieselben Polymere, wobei jedoch darauf zu achten ist, daß die Mantelkomponente einen Schmelzpunkt aufweist, welcher um mindestens 10°C tiefer liegt als der Schmelzpunkt der Kernkomponente. Eine besonders günstige Polymerauswahl für die Kern-Mantel-Filamente der erfindungsgemäßen Vliesstoffbahn ergibt sich, wenn Polyester als Kernkomponente und Polyamid, insbesondere Polyamid 6, als Mantelkomponente eingesetzt wird. Hierbei liegt bevorzugt der Mantelanteil in Volumenprozent der Kern-Mantel-Filamente zwischen 5% und 40%, insbesondere zwischen 10% und 35%.For the core component of the core-sheath filaments are suitable practically all meltable polymers, such as Polyethylene terephthalate, polypropylene, polyethylene, Polyamide, polyurethane or PVC. For the jacket component the same polymers are suitable, but towards them ensure that the jacket component has a melting point which is at least 10 ° C lower than that Melting point of the core component. A particularly cheap one Polymer selection for the core-sheath filaments of the nonwoven web according to the invention results when polyester as core component and polyamide, especially polyamide 6, is used as a jacket component. This is preferred the sheath proportion in volume percent of the core-sheath filaments between 5% and 40%, in particular between 10% and 35%.

Bei der erfindungsgemäßen Vliesstoffbahn ist die gestellte Aufgabe besonders gut gelöst, wenn der Abstand benachbarter Verstärkungsgarne zwischen 2 und 30 mm, insbesondere zwischen 4 und 15 mm, liegt. In the nonwoven web according to the invention, the posed Task solved particularly well when the distance is closer Reinforcement yarns between 2 and 30 mm, especially between 4 and 15 mm.

Die erfindungsgemäße Vliesstoffbahn zeichnet sich weiterhin durch eine Reihe von besonders günstigen Eigenschaften aus, die die Eignung dieser Vliesstoffbahn als Einlage für Bitumenbahnen oder als Dachunterspannbahn aber auch als Tuftinggrund für Teppiche deutlich macht.The nonwoven web according to the invention is still distinguished through a number of particularly favorable properties, the suitability of this nonwoven sheet as an insert for bitumen sheets or as a roofing membrane but also as Tufting reason for carpets makes it clear.

Der Modul bei 5% Dehnung liegt bei der erfindungsgemäßen Vliesstoffbahn bevorzugt bei mindestens 170 N, insbesondere bei mindestens 190 N pro 5cm und pro 100 g Vliesgewicht.The modulus at 5% elongation is the one according to the invention Nonwoven web preferred at least 170 N, in particular at least 190 N per 5 cm and per 100 g fleece weight.

Die Bruchdehnung läßt sich bei der erfindungsgemäßen Vliesstoffbahn gut einstellen, indem entsprechende Filamente mit einem die Bruchdehnung gewährleistenden Binder kombiniert werden. Die Bruchdehnung kann aber auch durch geeignete Auswahl der Filamente A und/oder der Filamente B entsprechend eingestellt werden. Die Bruchdehnung liegt bevorzugt zwischen 15% und 70%. Für Bitumenbahnen läßt sich die Bruchdehnung leicht auf 15% bis 50% und für Tuftinggrund auf 30% bis 65% einstellen.The elongation at break can be found in the nonwoven web of the invention adjust well by using appropriate filaments combined with a binder ensuring the elongation at break become. However, the elongation at break can also be adjusted by suitable Selection of filaments A and / or filaments B accordingly can be set. The elongation at break is preferred between 15% and 70%. For bitumen sheeting, the Elongation at break slightly to 15% to 50% and for tufting base Set 30% to 65%.

Die Bruchfestigkeit liegt bevorzugt zwischen 300 und 600 N, insbesondere zwischen 400 bis 550 N pro 5 cm und pro 100 g, während die Weiterreißfestigkeit Werte von 100 bis 300 N, bevorzugt von 130 bis 250 N pro 100 g aufweist.The breaking strength is preferably between 300 and 600 N, in particular between 400 to 550 N per 5 cm and per 100 g, while the tear resistance values from 100 to 300 N, preferably from 130 to 250 N per 100 g.

Der Modul, die Bruchdehnung und die Bruchfestigkeit werden an einem 5 cm breiten Streifen, bei dem die Verstärkungsgarne in Längsrichtung verlaufen, bei einer Ziehgeschwindigkeit von 20 cm/min und einer Temperatur von 21 °C bestimmt (DIN 533 857). Sind mehrere Scharen von sich überkreuzenden Verstärkungsgarnen vorhanden, kann der Modul in jeder Richtung, in der die Verstärkungsgarne laufen, gemessen werden. The modulus, the elongation at break and the breaking strength are on a 5 cm wide strip where the reinforcement yarns run in the longitudinal direction at a pulling speed of 20 cm / min and a temperature of 21 ° C. (DIN 533 857). Are several gangs of intersecting Reinforcement yarns available, the module can be in measured in every direction in which the reinforcing yarns run become.

Die Weiterreißfestigkeit wird an einem 5 cm breiten Streifen, bei dem die Verstärkungsgarne in Querrichtung verlaufen, bei einer Ziehgeschwindigkeit von 10 cm/min und einer Temperatur von 21°C bestimmt (DIN 53 363). Auch hier kann die Weiterreißfestigkeit bei sich überkreuzenden Verstärkungsgarnen jeweils quer zur Richtung der Verstärkungsgarne gemessen werden.The tear resistance is on a 5 cm wide Strip, in which the reinforcing yarns in the transverse direction run at a drawing speed of 10 cm / min and a temperature of 21 ° C determined (DIN 53 363). Here too the tear resistance of reinforcing yarns that cross over each transverse to the direction of the reinforcing yarns be measured.

Die erfindungsgemäße Vliesstoffbahn weist außerdem eine ausgezeichnete mechanische Stabilität bei hoher Temperatur auf. Die mechanische Stabilität bei hoher Temperatur in Längs- und in Querrichtung wird folgendermaßen bestimmt: Auf einen Streifen von 60 cm Länge und 10 cm Breite wird zentriert ein 10 cm langes und 8 cm breites Rechteck aufgezeichnet, wobei die längere Seite in Längsrichtung angeordnet ist. Der Streifen wird zwischen zwei Klemmen derart befestigt, daß die freie Länge zwischen den Klemmen etwa 25 cm beträgt. Nach einer 10-minütigen Behandlung in einem auf 180°C aufgeheizten Ofen unter einer Belastung von 57 N werden die Abmessungen des aufgezeichneten Rechtecks gemessen. Die Differenz zur ursprünglichen Länge bzw. Breite des aufgezeichneten Rechtecks wird ins Verhältnis zur ursprünglichen Länge bzw. Breite gesetzt und in % angegeben.The nonwoven web according to the invention also has a excellent mechanical stability at high temperature on. The mechanical stability at high temperature in The longitudinal and transverse directions are determined as follows: On a strip 60 cm long and 10 cm wide centered a 10 cm long and 8 cm wide rectangle, the longer side being arranged in the longitudinal direction is. The strip is attached between two clamps in such a way that the free length between the clamps is about 25 cm is. After a 10 minute treatment in one Oven heated to 180 ° C under a load of 57 N. the dimensions of the recorded rectangle are measured. The difference to the original length or width of the recorded rectangle is in proportion to the original Length or width set and specified in%.

Die erfindungsgemäße Vliesstoffbahn weist bevorzugt eine Stabilität S1 in Längsrichtung auf, wobei 4,2 - 0,015 * G ≥S1 > 0 und wobei
G das Gesamtgewicht der Vliesstoffbahn in g/m2 ist.
Eine Stabilität in Querrichtung, wobei - 4,8 + 0,017 * G ≤Sq ≤0 und wobei
G das Gesamtgewicht der Vliesstoffbahn in g/m2 ist, ist ein weitere bevorzugte Ausführungsform der erfindungsgemäßen Vliesstoffbahn. The nonwoven web according to the invention preferably has a stability S 1 in the longitudinal direction, wherein 4.2 - 0.015 * G ≥S 1 > 0 and where
G is the total weight of the nonwoven web in g / m 2 .
A transverse stability, being - 4.8 + 0.017 * G ≤S q ≤0 and where
G is the total weight of the nonwoven web in g / m 2 , is another preferred embodiment of the nonwoven web according to the invention.

Die Erfindung wird anhand der nachfolgenden Beispiele näher erläutert.The invention is illustrated by the following examples explained.

Bi-Komponenten-Filamente des Kern-Mantel-Typs, bei denen der Kern aus Polyäthylenterephthalat und der Mantel aus Polyamid 6 besteht, werden in bekannter Weise derart hergestellt, daß sie einen Kern-Anteil von 73 vol% und einen Mantelanteil von 27 vol% aufweisen. Die Kern-Mantel-Filamente werden anschließend verstreckt und weisen dann eine Bruchfestigkeit von 36 cN/tex eine Bruchdehnung von 64% und einen Titer von 1 650 dtex auf. Die Kern-Mantel-Filamente werden in bekannter Weise auf einem bewegten Stahlgewebe-Band abgelegt, wobei die Zuführgeschwindigkeit der Kern-Mantel-Filamente 358 m/min (Beispiel 1) bzw. 376 m/min (Beispiel 2) und die Geschwindigkeit des bewegten Stahlgewebe-Bandes 20 m/min (Beispiel 1) bzw. 13 m/min (Beispiel 2) beträgt. Auf die gleichmäßig in Wirrlage abgelegten Kern-Mantel-Filamente werden pro m 143 Garne mit derselben Geschwindigkeit, wie sich das bewegte Stahlgewebe-Band bewegt, aufgelegt, wobei jedes Garn aus 110 Kern-Mantel-Filamenten desselben Typs besteht, mit welchem die erste Wirrlage hergestellt wurde. Auf das nunmehr entstandene Gebilde wird eine weitere Lage von Kern-Mantel-Filamenten desselben Typs in derselben Weise wie die erste Lage zugeführt, wodurch sich diese wiederum in Wirrlage auf die erste Wirrlage und die inzwischen parallel aufliegenden Garne anordnen. Nun wird auf das entstandene Gebilde heiße Luft mit einer Temperatur von 224 °C durch das Gebilde und das Stahlgewebe-Band hindurchgeblasen. Durch diese thermische Behandlung, der eine Kühlung folgt, wird die nunmehr entstandene filamentverstärkte Vliesstoffbahn verfestigt. Sie weist danach folgende Eigenschaften auf: Beispiel 1 2 Flächengewicht g/m2 110 170 Modul bei 5% Dehnung N/5 cm 223 320 Bruchdehnung % 35 40 Bruchfestigkeit N/5 cm 580 893 Weiterreißfestigkeit N 238 365 Stabilität in Längsrichtung % 2,0 1,0 Stabilität in Querrichtung Sq % - 2,0 - 1,0 Bicomponent filaments of the core-shell type, in which the core consists of polyethylene terephthalate and the shell made of polyamide 6, are produced in a known manner in such a way that they have a core fraction of 73 vol% and a shell fraction of 27 vol% exhibit. The core-sheath filaments are then drawn and then have a breaking strength of 36 cN / tex, an elongation at break of 64% and a titer of 1,650 dtex. The core-sheath filaments are deposited in a known manner on a moving steel fabric belt, the feed speed of the core-sheath filaments 358 m / min (example 1) or 376 m / min (example 2) and the speed of the moved Steel mesh belt is 20 m / min (example 1) or 13 m / min (example 2). 143 m 2 yarns per meter are placed on the core-sheath filaments, which are evenly laid in a tangle, at the same speed as the moving steel fabric belt, each yarn consisting of 110 core-sheath filaments of the same type with which the first tangle layer was produced. A further layer of core-sheath filaments of the same type is fed onto the structure that has now arisen in the same way as the first layer, as a result of which they are arranged in a tangled position on the first tangled layer and the yarns which are now parallel. Hot air is then blown onto the resulting structure at a temperature of 224 ° C. through the structure and the steel mesh belt. As a result of this thermal treatment, which is followed by cooling, the filament-reinforced nonwoven web that has now formed is consolidated. It then has the following properties: example 1 2nd Basis weight g / m 2 110 170 Module at 5% elongation N / 5 cm 223 320 Elongation at break % 35 40 Breaking strength N / 5 cm 580 893 Tear resistance N 238 365 Longitudinal stability % 2.0 1.0 Transverse stability S q % - 2.0 - 1.0

Claims (27)

  1. Filament-reinforced nonwoven-fabric sheeting reinforced by sheets of parallel reinforcement yarns integrated into said nonwoven-fabric sheeting, whereby a binder is used to bind the filaments A forming the nonwoven fabric to filaments B of said reinforcement yarns at the crossing points of filaments A and B, and to bind the filaments A of said nonwoven fabric to each other at their crossing points, characterized in that the filaments B of said reinforcement yarns are also bound to each other at least at some points via a binder and that all bindings are caused by the same binder.
  2. Nonwoven-fabric sheeting in accordance with Claim 1, characterized in that said reinforcement yarns are oriented at least substantially in the longitudinal direction of said nonwoven-fabric sheeting.
  3. Nonwoven-fabric sheeting in accordance with Claim 1, characterized in that at least two sheets of parallel reinforcement yarns are integrated into said nonwoven-fabric sheeting such that said reinforcement yarns cross.
  4. Nonwoven-fabric sheeting in accordance with Claim 1 or 3, characterized in that one sheet of said parallel reinforcement yarns is oriented at least substantially in the longitudinal direction and another sheet of said parallel reinforcement yarns at least substantially in the transverse direction of said nonwoven-fabric sheeting.
  5. Nonwoven-fabric sheeting in accordance with Claim 1 or 4, characterized in that said binder is a fusible binder whose melting point is lower than the melting points of filaments A and B of said nonwoven-fabric sheeting.
  6. Nonwoven-fabric sheeting in accordance with one or more of Claims 1 to 5, characterized in that filaments A of said nonwoven fabric and filaments B of said reinforcement yarns are made of similar polymers.
  7. Nonwoven-fabric sheeting in accordance with one or more of Claims 1 to 5, characterized in that filaments A of said nonwoven fabric and filaments B of said reinforcement yarns are made of the same polymer.
  8. Nonwoven-fabric sheeting in accordance with one or more of Claims 1 to 7, characterized in that filaments A of said nonwoven fabric and/or filaments B of said reinforcement yarns are bicomponent filaments.
  9. Nonwoven-fabric sheeting in accordance with one or more of Claims 5 to 7, characterized in that filaments A of said nonwoven fabric and filaments B of said reinforcement yarns are bicomponent filaments in which one component of said bicomponent filaments is said fusible binder.
  10. Nonwoven-fabric sheeting in accordance with Claim 9, characterized in that said bicomponent filaments are sheath/core filaments in which the sheath is said fusible binder.
  11. Nonwoven-fabric sheeting in accordance with Claim 10, characterized in that said core component is a polyester and said sheath component is a polyamide.
  12. Nonwoven-fabric sheeting in accordance with Claim 10 or 11, characterized in that said sheath component is nylon-6.
  13. Nonwoven-fabric sheeting in accordance with one or more of Claims 10 to 12, characterized in that said sheath of said sheath/core filaments comprises between 5% and 40% by volume.
  14. Nonwoven-fabric sheeting in accordance with Claim 13, characterized in that said sheath of said sheath/core filaments comprises between 10% and 35% by volume.
  15. Nonwoven-fabric sheeting in accordance with one or more of Claims 1 to 14, characterized in that the separation of adjacent reinforcement yarns is between 2 and 30 mm.
  16. Nonwoven-fabric sheeting in accordance with one or more of Claims 1 to 14, characterized in that the separation of adjacent reinforcement yarns is between 4 and 15 mm.
  17. Nonwoven-fabric sheeting in accordance with one or more of Claims 1 to 16, characterized in that said nonwoven-fabric sheeting has a modulus at 5% elongation of at least 170 N per 5 cm and per 100 g nonwoven-fiber weight, measured in each respective direction of said reinforcement yarns.
  18. Nonwoven-fabric sheeting in accordance with Claim 17, characterized in that said nonwoven-fabric sheeting has a modulus at 5% elongation of at least 190 N per 5 cm and per 100 g, measured in each respective direction of said reinforcement yarns.
  19. Nonwoven-fabric sheeting in accordance with one or more of Claims 1 to 18, characterized in that said nonwoven-fabric sheeting has an elongation at break of 15% to 70% in each respective direction of said reinforcement yarns.
  20. Nonwoven-fabric sheeting in accordance with Claim 19, characterized in that said nonwoven-fabric sheeting has an elongation at break of 15% to 50% in each respective direction of said reinforcement yarns.
  21. Nonwoven-fabric sheeting in accordance with Claim 19, characterized in that said nonwoven-fabric sheeting has an elongation at break of 20% to 65% in each respective direction of said reinforcement yarns.
  22. Nonwoven-fabric sheeting in accordance with one or more of Claims 1 to 21, characterized in that said nonwoven-fabric sheeting has a breaking strength of 300 to 600 N per 5 cm and per 100 g in each respective direction of said reinforcement yarns.
  23. Nonwoven-fabric sheeting in accordance with Claim 22, characterized in that said nonwoven-fabric sheeting has a breaking strength of 400 to 550 N per 5 cm and per 100 g in each respective direction of said reinforcement yarns.
  24. Nonwoven-fabric sheeting in accordance with one or more of Claims 1 to 23, characterized in that said nonwoven-fabric sheeting has a tear propagation resistance of 100 to 300 N per 100 g.
  25. Nonwoven-fabric sheeting in accordance with Claim 24, characterized in that said nonwoven-fabric sheeting has a tear propagation resistance of 130 to 250 N per 100 g.
  26. Nonwoven-fabric sheeting in accordance with one or more of Claims 1 to 25, characterized in that said nonwoven-fabric sheeting has a stability SI in the longitudinal direction such that 4.2 - 0.015 * W ≥ Sl > 0 where
    W is the total weight of said nonwoven-fabric sheeting in g/m2.
  27. Nonwoven-fabric sheeting in accordance with one or more of Claims 1 to 26, characterized in that said nonwoven-fabric sheeting has a stability St in the transverse direction such that - 4.8 + 0.017 * W ≤ St ≤ 0 where
    W is the total weight of said nonwoven-fabric sheeting in g/m2.
EP95108989A 1994-06-16 1995-06-10 Nonwoven reinforced with filaments Revoked EP0687756B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4420811A DE4420811A1 (en) 1994-06-16 1994-06-16 Filament-reinforced nonwoven web
DE4420811 1994-06-16

Publications (3)

Publication Number Publication Date
EP0687756A2 EP0687756A2 (en) 1995-12-20
EP0687756A3 EP0687756A3 (en) 1998-06-10
EP0687756B1 true EP0687756B1 (en) 2000-01-19

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EP95108989A Revoked EP0687756B1 (en) 1994-06-16 1995-06-10 Nonwoven reinforced with filaments

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EP (1) EP0687756B1 (en)
JP (1) JPH0827656A (en)
DE (2) DE4420811A1 (en)
DK (1) DK0687756T3 (en)

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Publication number Priority date Publication date Assignee Title
CN1270013C (en) 1999-12-21 2006-08-16 金伯利-克拉克环球有限公司 Fine denier multicomponent fibers
JP2005536646A (en) * 2001-10-11 2005-12-02 コルボント ベスローテン フェンノートシャップ Custom-made nonwoven sheeting with non-uniform properties
CA2468446A1 (en) * 2001-11-28 2003-06-05 James Hardie Research Pty Limited Caulkless panelized wall system
DE102004054804A1 (en) * 2004-11-12 2006-05-18 Voith Fabrics Patent Gmbh Paper machine clothing
EP1705277A1 (en) * 2005-03-22 2006-09-27 Colbond B.V. Nonwoven web laminate
SG183398A1 (en) * 2010-02-23 2012-09-27 Toray Industries Composite semipermeable membrane and process for production thereof
EP2877627A1 (en) * 2012-07-26 2015-06-03 Bonar B.V. Primary carpet backing and tufted carpet comprising the same
DE102012111168A1 (en) * 2012-11-20 2014-05-22 Monier Roofing Components Gmbh Roof underlay with fabric strip grid

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Publication number Priority date Publication date Assignee Title
JPS62215057A (en) * 1986-03-04 1987-09-21 チッソ株式会社 Reinforced nonwoven fabric
FR2640288B1 (en) * 1988-12-13 1993-06-18 Rhone Poulenc Fibres NON-WOVEN TABLECLOTH SUPPORT IN CHEMICAL TEXTILE AND METHOD OF MANUFACTURING THE SAME
DE4036265A1 (en) * 1990-11-14 1992-05-21 Hoechst Ag Strip material for shaping - has unidirectional reinforcement and matrix fibres to give local bonding on at least one surface
US5200246A (en) * 1991-03-20 1993-04-06 Tuff Spun Fabrics, Inc. Composite fabrics comprising continuous filaments locked in place by intermingled melt blown fibers and methods and apparatus for making
FR2674336B1 (en) * 1991-03-22 1994-07-29 Thomson Csf HIGH DYNAMIC PHASE COMPARATOR DEVICE.
FI921325A (en) * 1991-03-28 1992-09-29 Hoechst Ag FILAMENTFOERSTAERKT POLYESTERINLAEGG
US5178924A (en) * 1991-06-17 1993-01-12 Minnesota Mining And Manufacturing Company Release liner
US5334446A (en) * 1992-01-24 1994-08-02 Fiberweb North America, Inc. Composite elastic nonwoven fabric

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DE4420811A1 (en) 1995-12-21
JPH0827656A (en) 1996-01-30
DK0687756T3 (en) 2000-07-03
DE59507631D1 (en) 2000-02-24
US5691029A (en) 1997-11-25
EP0687756A2 (en) 1995-12-20
EP0687756A3 (en) 1998-06-10

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