EP2764150B1 - Drapable laid scrim device - Google Patents

Drapable laid scrim device Download PDF

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Publication number
EP2764150B1
EP2764150B1 EP11815751.0A EP11815751A EP2764150B1 EP 2764150 B1 EP2764150 B1 EP 2764150B1 EP 11815751 A EP11815751 A EP 11815751A EP 2764150 B1 EP2764150 B1 EP 2764150B1
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EP
European Patent Office
Prior art keywords
reinforcing
yarns
reinforcing yarns
angle
threads
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EP11815751.0A
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German (de)
French (fr)
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EP2764150A1 (en
Inventor
Martin Gerster
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Gustav Gerster & Co KG GmbH
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Gustav Gerster & Co KG GmbH
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/14—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes
    • D04B21/16—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes incorporating synthetic threads
    • D04B21/165—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes incorporating synthetic threads with yarns stitched through one or more layers or tows, e.g. stitch-bonded fabrics
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/02—Cross-sectional features
    • D10B2403/024—Fabric incorporating additional compounds
    • D10B2403/0241—Fabric incorporating additional compounds enhancing mechanical properties
    • D10B2403/02412—Fabric incorporating additional compounds enhancing mechanical properties including several arrays of unbent yarn, e.g. multiaxial fabrics
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/02—Reinforcing materials; Prepregs

Definitions

  • the invention relates to a scrim device with a plurality of reinforcing yarns, which are divided into at least two groups, of which a first, referred to as 0 ° reinforcing yarns group is oriented in a longitudinal direction and a second, referred to as 90 ° amplifier yarns group perpendicular to the Longitudinal direction of the first group is oriented.
  • the reinforcing yarns are designed for reinforcement of a composite structure to be formed in a separate process.
  • Scrim devices of the type mentioned above are used in the prior art to produce flat textiles with a substantially planar and possibly slightly concave or convex curved surface.
  • the known scrim devices however, have the disadvantage that a local drapability for forming highly curved surfaces is not given.
  • a clutch device of the type mentioned is from the document EP 0 268 838 known.
  • This document further discloses a sheet of fibers, in particular as a reinforcing insert for plastic parts, with warp and weft lying in the plastic filaments, the threads are made of a material that shrinks when exposed to a temperature below the melting point of the material temperature, and wherein the material after heat exposure with the result of shrinking substantially resumes its original strength to be well deformed at low weight and relatively low production costs and thus versatile to use as a reinforcing insert.
  • DE 27 07 001 discloses knitted or stitched textiles which on the one hand comprises a warp either of warp threads, ie longitudinally arranged thread formations, or a base layer consisting of a fabric and weft yarns lying thereon, ie transverse thread formations, on the other hand a knitted fabric joining the base layer and the weft threads, characterized in that the weft threads consist of two systems of transversely arranged thread structures, between which the base layer lies, so that the textiles have on both sides an articulated surface with transverse channels.
  • the object of the invention is to provide a scrim device whose local drapability for the formation of strongly curved concave / convex surfaces over the known scrim devices is substantially improved.
  • the scrim device according to the invention is intended intended to form together with an applied matrix of resin or thermoplastic a solid fiber composite, for example, for use in aircraft or for the production of rotors for wind turbines.
  • this object is achieved in that both groups of amplifier yarns of the amplifier yarns at least partially enveloping wrapping threads are held together so loosely that a displacement of any of the amplifier yarns is ensured in relation to an adjacent amplifier yarn, said draping the fabric to form concave / convex structures by pulling the reinforcing yarns of all groups from the edge region of the fabric, giving local drapability without elongation or wrinkling of adjacent reinforcement yarns when forming concave / convex structures.
  • both groups of reinforcing yarns of the reinforcing yarns at least partially enveloping Umhüllungsfäden are loosely held together that a displacement of any of the reinforcing yarns in relation to an adjacent reinforcing yarn is ensured, wherein a drape of the fabric to concave to form / Convex structures by pulling the reinforcing yarns of all Groups from the edge region of the Geleges takes place, wherein a local drapability is given without an expansion or wrinkling of adjacent reinforcing yarns occurs in a formation of concave / convex structures, achieved that necessary for the formation of concave / convex structures extension of a reinforcing yarn not by stretching the same is achieved, but in that a respective reinforcing yarn is drawn from the edge region ago.
  • the novel and advantageous properties of the scrim device according to the invention are achieved by a mesh-compatible incorporation of the reinforcing yarns, which furthermore has the advantage that damage to reinforcing yarns is ruled out.
  • This is in contrast to prior art scrim devices in which needles for introducing fixation threads from one side pierce the scrim, damaging individual scrim yarns.
  • the fixing threads conventionally introduced in this manner for connecting the individual reinforcing yarns to one another prevent a mutually displacing the reinforcing yarns against each other and thus prevent the possibility of forming locally strongly curved concave / convex structures.
  • sheath threads contain stitch-forming crochet threads which are arranged parallel to and between the 0 ° reinforcing yarns and envelop each of the 90 ° reinforcing yarns with one stitch each.
  • wrapping threads are formed by traversing threads running between in each case two adjoining crochet threads and linked to the crochet threads at respective connecting points. As a result, falling out of the 0 ° amplifier yarns is reliably prevented.
  • a traversing thread is preferably at an angle of 90 ° to 20 °, in the narrower sense at an angle of 70 ° to 30 ° and in particular at an angle of 50 ° to 40 ° or 45 ° to the longitudinal axis of 0 ° amplifier yarns arranged.
  • the traversing yarns are preferably arranged alternately in the direction of the longitudinal axis of a 0 ° amplifier yarn in a positively dimensioned angle (80 ° to 20 °) and a negative-sized angle (80 ° to -20 °).
  • a third group of amplifier yarns which are arranged at an oblique angle to the longitudinal axis of the 0 ° amplifier yarns and are held by meshes, each enveloping different of the 90 ° amplifier yarns.
  • a reinforcing yarn is typically not necessarily formed from a bundle of parallel filaments, however, wherein a filament may be formed of a natural fiber or a synthetic fiber and made of glass fiber, carbon fiber or aramid fiber.
  • the inventive scrim device 100 comprises a plurality of reinforcing yarns 110, 120 which are divided into two main groups, of which a first group designated as 0 ° reinforcing yarns 110 is oriented in a longitudinal direction and a second group designated as 90 ° reinforcing yarns 120 perpendicular to the longitudinal direction of the first group 110 is oriented.
  • Both groups of reinforcing yarns 110, 120 are held together by the reinforcing yarns 110, 120 at least partially enveloping sheath threads 130, which contact the reinforcing yarns 110, 120 of both groups only in the region of the periphery and thus a displaceability of any reinforcing yarn 110, 120 in relation to ensure an adjacent amplifier yarn 110, 120.
  • the wrapping threads 130 include stitch-forming crochet threads 140 that are parallel to and between the 0 ° Amplifier yarns 110 are arranged and wrap each with a mesh of each of the 90 ° amplifier yarns 120.
  • the wrapping threads 130 are furthermore formed by traversing threads 150 running between in each case two adjacent crochet threads 140 and linked to the crochet threads 140 at respective connecting points 141, which reliably prevent the 0 ° reinforcing threads 110 from falling out.
  • a traversing yarn 150 is arranged at an angle of approximately 45 ° to the longitudinal axis of a 0 ° amplifier yarn 110, wherein the traversing yarns 150 in the direction of the longitudinal axis of a 0 ° amplifier arm 110 alternately in a positive-sized angle (+ 45 °) and a negative-sized angle (-45 °) are arranged.
  • a third group of amplifier yarns 125 is arranged at an oblique angle to the longitudinal axis of the 0 ° amplifier yarns 110.
  • the respective amplifier yarns 125 are held by meshes 126 which respectively envelop different ones of the 90 ° reinforcing yarns 120.
  • An amplifier yarn 110, 120, 125 is formed from a bundle of parallel filaments.
  • a filament is formed by an aramid fiber.
  • Draping the fabric 100 to form concave / convex structures is accomplished by drawing the reinforcement yarns 110, 120, 125 of all groups from the edge region of the fabric.

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

Description

Die Erfindung betrifft eine Gelege-Vorrichtung mit einer Mehrzahl von Verstärkergarnen, die in mindestens zwei Gruppen unterteilt sind, von denen eine erste, als 0° Verstärkergarne bezeichnete Gruppe in einer Längsrichtung orientiert ist und eine zweite, als 90° Verstärkergarne bezeichnete Gruppe rechtwinklig quer zur Längsrichtung der ersten Gruppe orientiert ist. Die Verstärkergarne sind dabei für eine Verstärkung einer in einem getrennten Prozess zu bildenden Kompositstruktur ausgelegt.The invention relates to a scrim device with a plurality of reinforcing yarns, which are divided into at least two groups, of which a first, referred to as 0 ° reinforcing yarns group is oriented in a longitudinal direction and a second, referred to as 90 ° amplifier yarns group perpendicular to the Longitudinal direction of the first group is oriented. The reinforcing yarns are designed for reinforcement of a composite structure to be formed in a separate process.

Gelege-Vorrichtungen der eingangs genannten Art werden im Stand der Technik verwendet, um ebene Textilien mit im Wesentlichen planer und allenfalls leicht konkav oder konvex gebogener Oberfläche herzustellen. Die bekannten Gelege-Vorrichtungen weisen indes den Nachteil auf, dass eine lokale Drapierfähigkeit zur Ausbildung stark gebogener Oberflächen nicht gegeben ist.Scrim devices of the type mentioned above are used in the prior art to produce flat textiles with a substantially planar and possibly slightly concave or convex curved surface. The known scrim devices, however, have the disadvantage that a local drapability for forming highly curved surfaces is not given.

Eine Gelege-Vorrichtung der eingangs genannten Art ist aus der Druckschrift EP 0 268 838 bekannt. Diese Druckschrift offenbart des Weiteren ein Flächengebilde aus Fasern, insbesondere als Verstärkungseinlage für Kunststoffteile, mit in Kett- und Schussrichtung liegenden Kunststofffäden, wobei die Fäden aus einem Material bestehen, das bei Einwirkung einer unter dem Schmelzpunkt des Materials liegenden Temperatur schrumpft, und wobei das Material nach Wärmeeinwirkung mit der Folge des Schrumpfens im Wesentlichen wieder seine ursprüngliche Festigkeit annimmt, um bei geringem Gewicht und relativ niedrigen Herstellungskosten gut verformbar und damit vielfältig als Verstärkungseinlage einsetzbar zu sein.A clutch device of the type mentioned is from the document EP 0 268 838 known. This document further discloses a sheet of fibers, in particular as a reinforcing insert for plastic parts, with warp and weft lying in the plastic filaments, the threads are made of a material that shrinks when exposed to a temperature below the melting point of the material temperature, and wherein the material after heat exposure with the result of shrinking substantially resumes its original strength to be well deformed at low weight and relatively low production costs and thus versatile to use as a reinforcing insert.

DE 27 07 001 offenbart Gewirkte oder nähgewirkte Textilien, die einerseits eine entweder aus Kettfäden, d. h. aus in Längsrichtung angeordneten Fadengebilden, oder eine aus einem Flächengebilde bestehende Grundschicht und auf diesem aufliegende Schussfäden, d. h. in Querrichtung verlaufende Fadengebilde, andererseits ein die Grundschicht und die Schussfäden verbindendes Gewirke aufweist, dadurch gekennzeichnet, dass die Schussfäden aus zwei Systemen von in Querrichtung angeordneten Fädengebilde bestehen, zwischen denen die Grundschicht liegt, so dass die Textilien auf beiden Seiten eine gegliederte Oberfläche mit Querkanälchen aufweisen. DE 27 07 001 discloses knitted or stitched textiles which on the one hand comprises a warp either of warp threads, ie longitudinally arranged thread formations, or a base layer consisting of a fabric and weft yarns lying thereon, ie transverse thread formations, on the other hand a knitted fabric joining the base layer and the weft threads, characterized in that the weft threads consist of two systems of transversely arranged thread structures, between which the base layer lies, so that the textiles have on both sides an articulated surface with transverse channels.

Aufgabe der Erfindung ist es, eine Gelege-Vorrichtung zu schaffen, deren lokale Drapierbarkeit zur Ausbildung stark gebogener konkav/konvexer Oberflächen gegenüber den bekannten Gelege-Vorrichtungen wesentlich verbessert ist.The object of the invention is to provide a scrim device whose local drapability for the formation of strongly curved concave / convex surfaces over the known scrim devices is substantially improved.

Die erfindungsgemäße Gelege-Vorrichtung ist dabei bestimmungsgemäß vorgesehen, um zusammen mit einer aufgebrachten Matrix aus Harz oder Thermoplast einen festen Faserverbund beispielsweise zur Verwendung im Flugzeugbau oder zur Herstellung von Rotoren für Windkraftanlagen zu bilden.The scrim device according to the invention is intended intended to form together with an applied matrix of resin or thermoplastic a solid fiber composite, for example, for use in aircraft or for the production of rotors for wind turbines.

Für eine Gelege-Vorrichtung der eingangs genannten Art wird diese Aufgabe erfindungsgemäß dadurch gelöst, dass beide Gruppen von Verstärkergarnen von die Verstärkergarne mindestens teilweise umhüllenden Umhüllungsfäden derart locker zusammengehalten sind, dass eine Verschiebbarkeit eines beliebigen der Verstärkergarne in Relation zu einem benachbarten Verstärkergarn sichergestellt ist, wobei ein Drapieren des Geleges zur Ausbildung konkav/konvexer Strukturen durch Einziehen der Verstärkergarne aller Gruppen aus dem Randbereich des Geleges erfolgt, wobei eine lokale Drapierbarkeit gegeben ist, ohne dass bei einer Ausbildung konkav/konvexer Strukturen eine Dehnung oder Faltenbildung benachbarter Verstärkergarne erfolgt.For a clutch device of the type mentioned, this object is achieved in that both groups of amplifier yarns of the amplifier yarns at least partially enveloping wrapping threads are held together so loosely that a displacement of any of the amplifier yarns is ensured in relation to an adjacent amplifier yarn, said draping the fabric to form concave / convex structures by pulling the reinforcing yarns of all groups from the edge region of the fabric, giving local drapability without elongation or wrinkling of adjacent reinforcement yarns when forming concave / convex structures.

Bevorzugte Ausführungsformen der Erfindung sind Gegenstand der Unteransprüche.Preferred embodiments of the invention are subject of the dependent claims.

Bei der erfindungsgemäßen Vorrichtung wird durch die Merkmalskombination, dass beide Gruppen von Verstärkergarnen von die Verstärkergarne mindestens teilweise umhüllenden Umhüllungsfäden derart locker zusammengehalten sind, dass eine Verschiebbarkeit eines beliebigen der Verstärkergarne in Relation zu einem benachbarten Verstärkergarn sichergestellt ist, wobei ein Drapieren des Geleges zur Ausbildung konkav/konvexer Strukturen durch Einziehen der Verstärkergarne aller Gruppen aus dem Randbereich des Geleges erfolgt, wobei eine lokale Drapierbarkeit gegeben ist, ohne dass bei einer Ausbildung konkav/konvexer Strukturen eine Dehnung oder Faltenbildung benachbarter Verstärkergarne erfolgt, erreicht, dass eine für die Ausbildung konkav/konvexer Strukturen notwendige Verlängerung eines Verstärkergarnes nicht durch Dehnung derselben erreicht wird, sondern dadurch, dass ein betreffendes Verstärkergarn vom Randbereich her eingezogen wird.In the device according to the invention is characterized by the feature combination that both groups of reinforcing yarns of the reinforcing yarns at least partially enveloping Umhüllungsfäden are loosely held together that a displacement of any of the reinforcing yarns in relation to an adjacent reinforcing yarn is ensured, wherein a drape of the fabric to concave to form / Convex structures by pulling the reinforcing yarns of all Groups from the edge region of the Geleges takes place, wherein a local drapability is given without an expansion or wrinkling of adjacent reinforcing yarns occurs in a formation of concave / convex structures, achieved that necessary for the formation of concave / convex structures extension of a reinforcing yarn not by stretching the same is achieved, but in that a respective reinforcing yarn is drawn from the edge region ago.

Die neuen und vorteilhaften Eigenschaften der erfindungsgemäßen Gelege-Vorrichtung werden durch ein maschengerechtes Einbinden der Verstärkergarne erreicht, das des Weiteren den Vorteil in sich trägt, dass ein Beschädigen von Verstärkergarnen ausgeschlossen ist. Dies steht im Gegensatz zu den Gelege-Vorrichtungen gemäß Stand der Technik, bei denen Nadeln zum Einbringen von Fixierungsfäden von einer Seite her unter Beschädigung einzelner Verstärkergarne das Gelege durchstoßen. Die herkömmlicherweise auf diese Art eingebrachten Fixierungsfäden zum Verbinden der einzelnen Verstärkergarne miteinander verhindern indes ein mutuelles Verschieben der Verstärkergarne gegeneinander und unterbinden dadurch gerade die Möglichkeit einer Ausbildung lokal stark gebogener konkav/konvexer Strukturen.The novel and advantageous properties of the scrim device according to the invention are achieved by a mesh-compatible incorporation of the reinforcing yarns, which furthermore has the advantage that damage to reinforcing yarns is ruled out. This is in contrast to prior art scrim devices in which needles for introducing fixation threads from one side pierce the scrim, damaging individual scrim yarns. However, the fixing threads conventionally introduced in this manner for connecting the individual reinforcing yarns to one another prevent a mutually displacing the reinforcing yarns against each other and thus prevent the possibility of forming locally strongly curved concave / convex structures.

Gemäß einer ersten bevorzugten Ausführungsform der erfindungsgemäßen Vorrichtung ist vorgesehen, dass Umhüllungsfäden Maschen bildende Häkelfäden enthalten, die parallel zu und zwischen den 0° Verstärkergarnen angeordnet sind und mit jeweils einer Masche ein jedes der 90° Verstärkergarne umhüllen.According to a first preferred embodiment of the device according to the invention, it is provided that sheath threads contain stitch-forming crochet threads which are arranged parallel to and between the 0 ° reinforcing yarns and envelop each of the 90 ° reinforcing yarns with one stitch each.

Gemäß einer wichtigen bevorzugten Ausführungsform der erfindungsgemäßen Vorrichtung ist vorgesehen, dass Umhüllungsfäden von zwischen jeweils zwei jeweils benachbarten Häkelfäden verlaufenden und mit den Häkelfäden an jeweiligen Anknüpfungspunkten verknüpften Changierfäden gebildet sind. Dadurch ist ein Herausfallen der 0° Verstärkergarne sicher verhindert.According to an important preferred embodiment of the device according to the invention, it is provided that wrapping threads are formed by traversing threads running between in each case two adjoining crochet threads and linked to the crochet threads at respective connecting points. As a result, falling out of the 0 ° amplifier yarns is reliably prevented.

Ein Changierfaden ist dabei je nach Entfernung der Anknüpfungspunkte vorzugsweise in einem Winkel von 90° bis 20°, im engeren Sinne in einem Winkel von 70° bis 30° und insbesondere in einem Winkel von 50° bis 40° bzw. 45° zur Längsachse eines 0° Verstärkergarnes angeordnet.Depending on the distance between the attachment points, a traversing thread is preferably at an angle of 90 ° to 20 °, in the narrower sense at an angle of 70 ° to 30 ° and in particular at an angle of 50 ° to 40 ° or 45 ° to the longitudinal axis of 0 ° amplifier yarns arranged.

Dabei sind die Changierfäden vorzugsweise in Richtung der Längsachse eines 0° Verstärkergarnes alternierend in einem positiv bemessenen Winkel (80° bis 20°) und einem negativ bemessenen Winkel (80° bis -20°) angeordnet.The traversing yarns are preferably arranged alternately in the direction of the longitudinal axis of a 0 ° amplifier yarn in a positively dimensioned angle (80 ° to 20 °) and a negative-sized angle (80 ° to -20 °).

Zur Ausbildung eines besonders robusten Geleges kann eine dritte Gruppe von Verstärkergarnen vorgesehen sein, die in einem schrägen Winkel zur Längsachse der 0° Verstärkergarne angeordnet sind und dabei von Maschen gehalten sind, die jeweils unterschiedliche der 90° Verstärkergarne umhüllen.To form a particularly robust Geleges may be provided a third group of amplifier yarns, which are arranged at an oblique angle to the longitudinal axis of the 0 ° amplifier yarns and are held by meshes, each enveloping different of the 90 ° amplifier yarns.

Ein Verstärkergarn ist in der Regel, indes nicht notwendigerweise aus einem Bündel parallel verlaufender Filamente gebildet, wobei ein Filament von einer Naturfaser oder einer synthetischen Faser gebildet und aus Glasfaser, Karbonfaser oder Aramidfaser hergestellt sein kann.A reinforcing yarn is typically not necessarily formed from a bundle of parallel filaments, however, wherein a filament may be formed of a natural fiber or a synthetic fiber and made of glass fiber, carbon fiber or aramid fiber.

Die erfindungsgemäße Vorrichtung wird im Folgenden anhand einer bevorzugten Ausführungsform erläutert, die in den Figuren der Zeichnung dargestellt ist. Darin zeigen:

Fig. 1
eine bevorzugte Ausführungsform der erfindungsgemäßen Vorrichtung in einer Ansicht von oben;
Fig. 2
in Fig. 1 dargestellte bevorzugte Ausführungsform der erfindungsgemäßen Vorrichtung in einer Ansicht von unten;
Fig. 3
eine weitere bevorzugte Ausführungsform der erfindungsgemäßen Vorrichtung in einer Ansicht von oben.
The device according to the invention is explained below with reference to a preferred embodiment, which is shown in the figures of the drawing. Show:
Fig. 1
a preferred embodiment of the device according to the invention in a view from above;
Fig. 2
in Fig. 1 illustrated preferred embodiment of the device according to the invention in a view from below;
Fig. 3
a further preferred embodiment of the device according to the invention in a view from above.

Die in den Figuren 1 und 3 dargestellte erfindungsgemäße Gelege-Vorrichtung 100 enthält eine Mehrzahl von Verstärkergarnen 110, 120, die in zwei Hauptgruppen unterteilt sind, von denen eine erste, als 0° Verstärkergarne 110 bezeichnete Gruppe in einer Längsrichtung orientiert ist und eine zweite , als 90° Verstärkergarne 120 bezeichnete Gruppe rechtwinklig quer zur Längsrichtung der ersten Gruppe 110 orientiert ist. Beide Gruppen von Verstärkergarnen 110, 120 sind von die Verstärkergarne 110, 120 mindestens teilweise umhüllenden Umhüllungsfäden 130 zusammengehalten, die lediglich im Bereich der Peripherie mit den Verstärkergarnen 110, 120 beider Gruppen in Kontakt treten und so eine Verschiebbarkeit eines beliebigen Verstärkergarns 110, 120 in Relation zu einem benachbarten Verstärkergarn 110, 120 sicherstellen.The in the FIGS. 1 and 3 The inventive scrim device 100 according to the invention comprises a plurality of reinforcing yarns 110, 120 which are divided into two main groups, of which a first group designated as 0 ° reinforcing yarns 110 is oriented in a longitudinal direction and a second group designated as 90 ° reinforcing yarns 120 perpendicular to the longitudinal direction of the first group 110 is oriented. Both groups of reinforcing yarns 110, 120 are held together by the reinforcing yarns 110, 120 at least partially enveloping sheath threads 130, which contact the reinforcing yarns 110, 120 of both groups only in the region of the periphery and thus a displaceability of any reinforcing yarn 110, 120 in relation to ensure an adjacent amplifier yarn 110, 120.

Die Umhüllungsfäden 130 enthalten Maschen bildende Häkelfäden 140, die parallel zu und zwischen den 0° Verstärkergarnen 110 angeordnet sind und mit jeweils einer Masche ein jedes der 90° Verstärkergarne 120 umhüllen.The wrapping threads 130 include stitch-forming crochet threads 140 that are parallel to and between the 0 ° Amplifier yarns 110 are arranged and wrap each with a mesh of each of the 90 ° amplifier yarns 120.

Die Umhüllungsfäden 130 sind des Weiteren von zwischen jeweils zwei jeweils benachbarten Häkelfäden 140 verlaufenden und mit den Häkelfäden 140 an jeweiligen Anknüpfungspunkten 141 verknüpften Changierfäden 150 gebildet, die ein Herausfallen der 0° Verstärkergarne 110 sicher verhindern.The wrapping threads 130 are furthermore formed by traversing threads 150 running between in each case two adjacent crochet threads 140 and linked to the crochet threads 140 at respective connecting points 141, which reliably prevent the 0 ° reinforcing threads 110 from falling out.

Ein Changierfaden 150 ist dabei in einem Winkel von etwa 45° zur Längsachse eines 0° Verstärkergarnes 110 angeordnet, wobei die Changierfäden 150 in Richtung der Längsachse eines 0° Verstärkergarnes 110 alternierend in einem positiv bemessenen Winkel (+45°) und einem negativ bemessenen Winkel (-45°) angeordnet sind.A traversing yarn 150 is arranged at an angle of approximately 45 ° to the longitudinal axis of a 0 ° amplifier yarn 110, wherein the traversing yarns 150 in the direction of the longitudinal axis of a 0 ° amplifier arm 110 alternately in a positive-sized angle (+ 45 °) and a negative-sized angle (-45 °) are arranged.

Bei der in Figur 3 dargestellten Ausführungsform der erfindungsgemäßen Gelege-Vorrichtung 100 ist eine dritte Gruppe von Verstärkergarnen 125 in einem schrägen Winkel zur Längsachse der 0° Verstärkergarne 110 angeordnet. Die betreffenden Verstärkergarne 125 sind dabei von Maschen 126 gehalten, die jeweils unterschiedliche der 90° Verstärkergarne 120 umhüllen.At the in FIG. 3 In the illustrated embodiment of the scrim device 100 according to the invention, a third group of amplifier yarns 125 is arranged at an oblique angle to the longitudinal axis of the 0 ° amplifier yarns 110. The respective amplifier yarns 125 are held by meshes 126 which respectively envelop different ones of the 90 ° reinforcing yarns 120.

Ein Verstärkergarn 110, 120, 125 ist aus einem Bündel parallel verlaufender Filamente gebildet. Im vorliegenden Fall ist ein Filament von einer Aramidfaser gebildet.An amplifier yarn 110, 120, 125 is formed from a bundle of parallel filaments. In the present case, a filament is formed by an aramid fiber.

Ein Drapieren des Geleges 100 zur Ausbildung konkav/konvexer Strukturen erfolgt durch Einziehen der Verstärkergarne 110 ,120, 125 aller Gruppen aus dem Randbereich des Geleges.Draping the fabric 100 to form concave / convex structures is accomplished by drawing the reinforcement yarns 110, 120, 125 of all groups from the edge region of the fabric.

Das oben erläuterte Ausführungsbeispiel der Erfindung dient lediglich dem Zweck eines besseren Verständnisses der durch die Ansprüche vorgegebenen erfindungsgemäßen Lehre, die als solche durch das Ausführungsbeispiel nicht eingeschränkt ist.The above-described embodiment of the invention is merely for the purpose of better understanding of the teaching of the invention predetermined by the teaching, which is not limited as such by the embodiment.

Claims (11)

  1. A web device (100) comprising a plurality of reinforcing yarns (110, 120) divided into at least two groups, a first group, identified as 0° reinforcing yarns (110), being oriented in a longitudinal direction, and a second group, identified as 90 ° reinforcing yarns (120), being oriented at right angles to said longitudinal direction of the first group (110), wherein both groups of reinforcing yarns (110, 120) are loosely held together by enveloping fibers loosely enveloping the reinforcing yarns (110, 120), at least in part, such that movability of any one of the reinforcing yarns (110, 120) relatively to an adjacent reinforcing yarn (110, 120) is guaranteed, resulting in draping of the web for the purpose of forming concave or convex structures is effected by drawing the reinforcing yarns (110, 120, 125) of all groups in from the peripheral region of the web (110), characterized in that local drapability is possible without stretching or creasing of adjacent reinforcing yarns taking place on forming concave or convex structures.
  2. A device as claimed in claim 1, characterized in that enveloping fibers are formed by crochet threads (140) forming loops (126) disposed parallel to and between the 0 ° reinforcing yarns (110) and enveloping each of the 90 ° reinforcing yarns (120) with a loop.
  3. A device as claimed in claim 1 or claim 2, characterized in that enveloping fibers are formed by traversing threads (150) extending between two adjacent crochet threads (140) and connected to the crochet threads (140) at respective points of contact (141).
  4. A device as claimed in claim 3, characterized in that a traversing thread (150) is disposed depending on the distance from the points of contact (141) at an angle of from ca. 80 ° to ca. 20 ° to the longitudinal axis of a 0 ° reinforcing yarn (110).
  5. A device as claimed in claim 3, characterized in that a traversing thread (150) is disposed at an angle of from 70 ° to 30 ° to the longitudinal axis of a 0 ° reinforcing yarn (110).
  6. A device as claimed in claim 3, characterized in that a traversing thread (150) is disposed at an angle of from 50 ° to 40 ° to the longitudinal axis of a 0 ° reinforcing yarn (110).
  7. A device as claimed in claim 3, characterized in that a traversing thread (150) is disposed at an angle of ca. 45 ° to the longitudinal axis of a 0 ° reinforcing yarn (110).
  8. A device as claimed in any one of claims 4 to 7, characterized in that the traversing threads (150) are alternately disposed at a positively directed angle of from 80 ° to 20 ° and a negatively directed angle of from 80 ° to -20 ° in the direction of the longitudinal axis of a 0 ° reinforcing yarn (110).
  9. A device as claimed in any one of the above claims, characterized in that a third group of reinforcing yarns (125) is provided at a diagonal angle to the longitudinal axis of the 0 ° reinforcing yarns (110) and held by loops (126), each enveloping a different 90 ° reinforcing yarns (120).
  10. A device as claimed in any one of the above claims, characterized in that a reinforcing yarn (110, 120, 125) is composed of a bundle of parallel filaments.
  11. A device as claimed in claim 10, characterized in that a filament is made of a synthetic fiber, a natural fiber, a glass fiber, a carbon fiber, or an aramid fiber.
EP11815751.0A 2011-10-07 2011-10-07 Drapable laid scrim device Active EP2764150B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE2011/001819 WO2013050009A1 (en) 2011-10-07 2011-10-07 Drapable laid scrim device

Publications (2)

Publication Number Publication Date
EP2764150A1 EP2764150A1 (en) 2014-08-13
EP2764150B1 true EP2764150B1 (en) 2015-07-15

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Application Number Title Priority Date Filing Date
EP11815751.0A Active EP2764150B1 (en) 2011-10-07 2011-10-07 Drapable laid scrim device

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EP (1) EP2764150B1 (en)
WO (1) WO2013050009A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CS184152B1 (en) * 1976-03-16 1978-08-31 Ervin Faulhaber Knitted or knit-bonded fabric and apparatus for manufacturing the same
US4857379A (en) * 1986-10-24 1989-08-15 Verseidag Industrietextilien Gmbh Sheetlike structure of fibers, especially as a reinforcement for plastics components
FR2680803B1 (en) * 1991-08-27 1993-12-17 Crst TUBULAR TEXTILE REINFORCEMENT FOR REINFORCING MATERIALS AND DEVICE FOR ITS MANUFACTURE.
US6841492B2 (en) * 2002-06-07 2005-01-11 Honeywell International Inc. Bi-directional and multi-axial fabrics and fabric composites

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EP2764150A1 (en) 2014-08-13
WO2013050009A1 (en) 2013-04-11

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