DE102005051666A1 - Layered fiber assembly, e.g. for preparing preforms, has adjacent fiber layers intermingled when dry by locally applied air jet - Google Patents

Layered fiber assembly, e.g. for preparing preforms, has adjacent fiber layers intermingled when dry by locally applied air jet Download PDF

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Publication number
DE102005051666A1
DE102005051666A1 DE102005051666A DE102005051666A DE102005051666A1 DE 102005051666 A1 DE102005051666 A1 DE 102005051666A1 DE 102005051666 A DE102005051666 A DE 102005051666A DE 102005051666 A DE102005051666 A DE 102005051666A DE 102005051666 A1 DE102005051666 A1 DE 102005051666A1
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Prior art keywords
fiber layers
fiber
layers
jet
interlaminar
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DE102005051666A
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German (de)
Inventor
Udo Wattendorf
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Priority to DE102005051666A priority Critical patent/DE102005051666A1/en
Publication of DE102005051666A1 publication Critical patent/DE102005051666A1/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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
    • B29C70/24—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in at least three directions forming a three dimensional structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
    • B29C70/543—Fixing the position or configuration of fibrous reinforcements before or during moulding
    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/48—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation
    • D04H1/49—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation entanglement by fluid jet in combination with another consolidation means
    • 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

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

A preform (2) is prepared on a grid support (7) from a number of fiber layers impregnated with a binder. To improve the interlaminar shear strength the layers are intermingled locally by a high pressure air jet (5) while in a dry state. The layers can initially be shaped as required and the jet is placed in selected positions by a robot (4). The component is then completed by a resin-injection process. An independent claim is included for a layered fiber structure prepared in this way. The method can be used to attach the component to another part by using the jet to press the fiber layers into perforations in the other part.

Description

Die Erfindung bezieht sich auf eine Faserverbundstruktur, bestehend aus übereinander liegenden, interlaminar miteinander verbundenen Faserlagen, sowie auf ein entsprechendes Herstellungsverfahren, nach dem Oberbegriff des Patentanspruchs 1 bzw. 8.The The invention relates to a fiber composite structure consisting out of each other lying, interlaminar interconnected fiber layers, as well to a corresponding manufacturing process, according to the preamble of claim 1 or 8.

Es ist bekannt, Faserverbundstrukturen, die aus einer Vielzahl von übereinander liegenden, multidirektionalen Fasergeweben oder -gelegen bestehen, im trockenen Zustand quer zur Flächenerstreckung der Faserlagen zu vernähen, zu vernadeln oder zu verstiften oder auf andere Weise, z. B. durch Tuften oder Sticken, zu verbinden, um dadurch die mechanischen Eigenschaften des fertigen Faserverbundbauteils, insbesondere die interlaminare Scherfestigkeit und/oder den Elastizitätsmodul in Dickenrichung der Faserlagen, zu verbessern. Derartige Verfahren erfordern jedoch einen hohen Fertigungsaufwand und sind, wie etwa die Vernadelungstechnik, mit dem Risiko einer Faserbeschädigung behaftet.It is known, fiber composite structures consisting of a variety of superimposed lying, multidirectional fiber fabrics or -gelegen exist, in the dry state transverse to the surface extension to sew the fiber layers, needles or pens or otherwise, for. B. by tufts or embroidering, to thereby combine the mechanical properties the finished fiber composite component, in particular the interlaminar Shear strength and / or Young's modulus in thickness direction of Fiber layers, to improve. However, such methods require a high production cost and are, such as the needling technique, with the risk of fiber damage afflicted.

Aufgabe der Erfindung ist es, ein Herstellungsverfahren und eine Faserverbundstruktur zu schaffen, mit denen eine faserschonende interlaminare Verbindung der einzelnen Faserlagen auf hinsichtlich des Zeit- und des Fertigungsmittefaufwands einfache Weise erzielt wird.task The invention is a production process and a fiber composite structure to create a fiber-sparing interlaminar connection of individual fiber layers on terms of time and manufacturing overhead Way is achieved.

Diese Aufgabe wird erfindungsgemäß durch das im Patentanspruch 1 gekennzeichnete Verfahren bzw. die im Patentanspruch 8 gekennzeichnete Faserverbundstruktur gelöst.These The object is achieved by the characterized in claim 1 method or in the claim 8 characterized fiber composite structure solved.

Erfindungsgemäß werden die Verstärkungsfasern der einzelnen Faserlagen auf sehr einfache und effektive Weise mittels eines Druckmittelstrahls, vorzugsweise eines Hochdruckluftstrahls, aus dem Faserlagenverbund gelöst und mit den Verstärkungsfasern der angrenzenden Faserlagen verwirbelt, so dass die Faserverbundstruktur eine innige interlaminare Bindung erhält, ohne dass es hierzu gesonderter Verbindungsmittel und einer komplizierten, baulich und zeitlich aufwändigen Fertigungsmethode bedarf und ohne dass die Gefahr einer festigkeitsmindernden Faserbeschädigung besteht.According to the invention the reinforcing fibers the individual fiber layers in a very simple and effective way by means of a pressure medium jet, preferably a high-pressure air jet, released from the fiber layer composite and with the reinforcing fibers the adjacent fiber layers swirled, so that the fiber composite structure obtains an intimate interlaminar bond, without being separately Connecting means and a complicated, structurally and temporally complex Production method requires and without the risk of a strength-reducing fiber damage consists.

In weiterer vorteilhafter Ausgestaltung der Erfindung werden die Faserlagen in mehreren, je nach der geforderten Scherfestigkeit unterschiedlichen Bereichen druckstrahlverwirbelt, und eine weitere Vereinfachung des interlaminaren Verwirbelungsprozesses lässt sich dadurch erreichen, dass dieser mittels eines programmgesteuerten Roboters mit einer von diesem geführten Strahldüse für das Druckmedium automatisiert wird.In Another advantageous embodiment of the invention, the fiber layers in several, depending on the required shear strength different Areas of pressure blasting, and another simplification the interlaminar fluidization process can be achieved by that this by means of a program-controlled robot with a guided by this jet for the print medium is automated.

Gleichzeitig mit der interlaminaren Verbindung der einzelnen Faserlagen ermöglicht das erfindungsgemäße Verfahren auch die Einbindung von Anschlusselementen in die Faserstruktur derart, dass die Fasern unter der Druckstrahlwirkung in entsprechende Aussparungen der Anschlusselemente eingedrückt und beim Aushärten der Faserverbundstruktur in diesen verankert werden.simultaneously with the interlaminar connection of the individual fiber layers that allows inventive method also the integration of connection elements in the fiber structure such that the fibers under the pressure jet effect in corresponding Recesses of the connection elements pressed and hardened during curing Fiber composite structure are anchored in these.

Vorzugsweise wird aus den Faserlagen zunächst ein Preformling gebildet und dieser dann interlaminar druckstrahlverwibelt, woraufhin das so hergestellte Halbzeug zweckmäßigerweise im Wege des Harzinjektionsverfahrens zu dem fertigen Faserverbundbauteil weiterverarbeitet wird.Preferably gets out of the fiber layers first formed a preform and this then interlaminar druckstrahlverwibelt, whereupon the semifinished product thus produced expediently by way of the resin injection process is further processed to the finished fiber composite component.

Die Erfindung wird nunmehr anhand zweier Ausführungsbeispiele in Verbindung mit den Zeichnungen näher erläutert. Es zeigen in stark schematisierter Darstellung:The Invention will now be described with reference to two embodiments closer with the drawings explained. It shows in a highly schematic representation:

1 eine Druckstrahlanlage zur interlaminaren Verbindung der Faserlagen eines Faserverbundpreformlings; 1 a pressure blast machine for interlaminar connection of the fiber layers of a Faserverbundpreformlings;

2 eine vergrößerte Teildarstellung eines der gemäß 1 verwirbelten Faserlagenbereiche; und 2 an enlarged partial view of the according to 1 swirled fiber layer areas; and

3a, b ein in die Faserstruktur eingebundenes Anschlusselement in der Aufsicht (a) und im Schnitt (b) 3a , b a connection element integrated into the fiber structure in the plan view (a) and in section (b)

Die in den Fign. dargestellte, multidirektionale Faserverbundstruktur besteht aus einer Vielzahl von übereinander liegenden Faserlagen 1 unterschiedlicher Faserorientierung, die im trockenen Zustand zu einem – durch ein Bindemittel stabilisierten – Preformlling 2 (1) vorgeformt werden. Zur Erhöhung der interlaminaren Scherfestigkeit werden die Verstärkungsfasern der einzelnen Faserlagen 1 mittels der in 1 gezeigten Druckstrahlanlage 3 in vorgegebenen Bereichen A aus dem Faserverbund gelöst und untereinander im Wesentlichen senkrecht zur Flächenerstreckung der Faserlagen 1 verwirbelt, so dass die in 2 in übertriebenem Maßstab dargestellte Faserlagenbindung entsteht.The in Figs. shown, multidirectional fiber composite structure consists of a plurality of superimposed fiber layers 1 different fiber orientation, which in the dry state to a - stabilized by a binder - Preformlling 2 ( 1 ) are preformed. To increase the interlaminar shear strength, the reinforcing fibers of the individual fiber layers 1 by means of in 1 shown pressure blast machine 3 released in predetermined areas A from the fiber composite and with each other substantially perpendicular to the surface extension of the fiber layers 1 swirled, so that in 2 created in an exaggerated scale fiber layer bond arises.

Der interlaminare Verwirbelungsprozess arbeitet äußerst faserschonend und lässt sich sehr einfach dadurch automatisieren, dass die Druckstrahlanlage 3 einen programmgesteuerten Roboter 4 mit einer Druckstrahldüse 5 enthält, die an einen Druckluftbehälter 6 angeschlossen ist und die vorgegebenen Faserlagenbereiche A des Preformlings 2, welche auf einem luftdurchlässigen Stützgitter 7 aufliegen, mit einem senkrecht auf die Faserlagen 1 gerichteten Hochdruckluftstrahl D beaufschlagt. Im Anschluss an den interlaminaren Verwirbelungsprozess wird die Faserverbundstruktur 2 im Wege des Harzinjektionsverfahrens zu dem fertigen Faserverbundbauteil weiterverarbeitet.The interlaminar turbulence process is extremely gentle on the fibers and can be easily automated by using the pressure jet system 3 a program-controlled robot 4 with a pressure jet nozzle 5 contains, which are connected to a compressed air tank 6 is connected and the predetermined fiber layer areas A of the preform 2 , wel on an air-permeable support grid 7 rest, with one perpendicular to the fiber layers 1 directed high-pressure air jet D applied. Following the interlaminar fluidization process, the fiber composite structure becomes 2 further processed by way of resin injection process to the finished fiber composite component.

Bei der Ausführungsform gemäß 3, wo die den 1 und 2 entsprechenden Komponenten durch das gleiche Bezugszeichen gekennzeichnet sind, wird ein Anschlusselement 8 gleichzeitig mit der interlaminaren Verwirbelung der Faserlagen 1 in den Faserlagenaufbau 2 einbezogen. Zu diesem Zweck ist das Anschlusselement 8 mit Aussparungen oder Durchbrüchen 9 versehen, in die die Verstärkungsfasern bei ihrer gegenseitigen interlaminaren Verwirbelung unter der Wirkung des Hochdruckstrahls D eingedrückt und dann bei der Fertigstellung des Faserverbundbauteils, also beim Aushärten der Harzmatrix verankert werden. Auf diese Weise wird mit geringem Fertigungs- und vor allem auch Zeitaufwand eine faserschonende, interlaminare Faserlagenbindung einschließlich einer Einbeziehung von Anschlusselementen in den Faserlagenaufbau erzielt.In the embodiment according to 3 where the the 1 and 2 corresponding components are denoted by the same reference numeral, becomes a connection element 8th simultaneously with the interlaminar turbulence of the fiber layers 1 in the fiber layer construction 2 included. For this purpose, the connection element 8th with recesses or breakthroughs 9 provided in which the reinforcing fibers are pressed in their mutual interlaminar turbulence under the action of the high-pressure jet D and then anchored in the completion of the fiber composite component, ie during curing of the resin matrix. In this way, a fiber-saving, interlaminar fiber layer bonding including inclusion of connecting elements in the fiber layer structure is achieved with little manufacturing and especially time.

Claims (8)

Verfahren zum Herstellen einer Faserverbundstruktur aus übereinander liegenden Faserlagen, dadurch gekennzeichnet, dass die Fasern benachbarter Faserlagen im ungetränkten, trockenen Zustand durch ein quer zur Flächenerstreckung der Faserlagen örtlich eingestrahltes Druckmedium interlaminar miteinander verwirbelt werden.A method for producing a fiber composite structure of superimposed fiber layers, characterized in that the fibers of adjacent fiber layers are swirled interlaminar in the non-saturated, dry state by a transversely irradiated to the surface extension of the fiber layers locally print medium. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Druckmedium auf eine Vielzahl unterschiedlich positionierter Faserlagenbereiche eingestrahlt wird.Method according to claim 1, characterized in that that the print medium is positioned on a variety of different Fiber layer areas is irradiated. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Druckmedium in Form eines Hochdruckluftstrahls aufgebracht wird.Method according to claim 1 or 2, characterized that the pressure medium applied in the form of a high-pressure air jet becomes. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Druckmedium mittels eines programmgesteuerten Roboters mit von diesem geführter Strahldüse aufgebracht wird.Method according to one of the preceding claims, characterized characterized in that the pressure medium by means of a program-controlled robot with guided by this jet is applied. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zur Befestigung von Anschlusselementen die Fasern der übereinander liegenden Faserlagen mittels des Druckmittelstrahls in entsprechende Aussparungen der Anschlusselemente eingedrückt werden. Method according to one of the preceding claims, characterized characterized in that for fastening of connecting elements the Fibers of one over the other lying fiber layers by means of the pressure medium beam in corresponding Recesses of the connection elements are pressed. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Faserlagen zunächst vorgeformt und dann als vorgeformtes Halbzeug unter der Druckstrahlwirkung interlaminar verwirbelt werden.Method according to one of the preceding claims, characterized characterized in that the fiber layers are first preformed and then as preformed semi-finished product under the pressure jet effect interlaminar be swirled. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Faserlagen im Anschluss an die Druckmitteleinstrahlung im Wege des Harzinjektionsverfahrens zu dem fertigen Faserverbundbauteil weiterverarbeitet werden.Method according to one of the preceding claims, characterized characterized in that the fiber layers following the Druckmitteleinstrahlung by way of the resin injection process to the finished fiber composite component be further processed. Faserverbundstruktur, bestehend aus übereinander liegenden Faserlagen, dadurch gekennzeichnet, dass die Fasern benachbarter Faserlagen (1) in abgegrenzten Faserlagenbereichen (A) durch einen Druckmittelstrahl (D) untereinander in Dickenrichtung der Faserlagen verwirbelt sind.Fiber composite structure consisting of superimposed fiber layers, characterized in that the fibers of adjacent fiber layers ( 1 ) in delimited fiber layer regions (A) by a pressure medium jet (D) are swirled with each other in the thickness direction of the fiber layers.
DE102005051666A 2005-10-28 2005-10-28 Layered fiber assembly, e.g. for preparing preforms, has adjacent fiber layers intermingled when dry by locally applied air jet Ceased DE102005051666A1 (en)

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51147569A (en) * 1975-06-13 1976-12-17 Unitika U M Glass Kk Connection method and equipment for strand
EP0174533A2 (en) * 1984-08-27 1986-03-19 Klöcker-Entwicklungs-GmbH Device for forming a leno selvage
DE3446406A1 (en) * 1984-10-19 1986-04-24 Grünzweig + Hartmann und Glasfaser AG, 6700 Ludwigshafen Process for producing a preferably completely binder-free mineral-fibre mat and mineral-fibre mat thus produced and apparatus for carrying out the process
DE3616196A1 (en) * 1986-05-14 1987-11-19 Seydel Spinnereimasch METHOD AND DEVICE FOR BRAIDING FIBER TAPES
US4874563A (en) * 1984-03-15 1989-10-17 Basf Structural Materials Inc. Process for preparing tows from composite fiber blends
JPH06100246A (en) * 1992-09-21 1994-04-12 Kanebo Ltd Tow jointing device
DE19933360A1 (en) * 1999-07-16 2001-01-18 Saechsisches Textilforsch Inst Process for strengthening fiber and / or filament nonwovens
US6722116B1 (en) * 1999-11-26 2004-04-20 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Method and apparatus for manufacturing fiber bundle with injected air
DE10320694A1 (en) * 2003-05-02 2004-11-18 Sommer, Klaus, 15366 Münchehofe Method for producing textile material consolidated by a fluid jet process involves controlled alteration of the shape/direction of parts of the material before the fluid jet process is applied
DE3935264B4 (en) * 1988-10-21 2005-02-10 Toyo Boseki K.K. Molding composition for thermoplastic composites
DE69825948T2 (en) * 1997-02-14 2005-09-29 Toray Industries, Inc. BUNDLE OF PRECURSOR CARBON FIBER, DEVICE AND METHOD FOR THE PRODUCTION THEREOF

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51147569A (en) * 1975-06-13 1976-12-17 Unitika U M Glass Kk Connection method and equipment for strand
US4874563A (en) * 1984-03-15 1989-10-17 Basf Structural Materials Inc. Process for preparing tows from composite fiber blends
EP0174533A2 (en) * 1984-08-27 1986-03-19 Klöcker-Entwicklungs-GmbH Device for forming a leno selvage
DE3446406A1 (en) * 1984-10-19 1986-04-24 Grünzweig + Hartmann und Glasfaser AG, 6700 Ludwigshafen Process for producing a preferably completely binder-free mineral-fibre mat and mineral-fibre mat thus produced and apparatus for carrying out the process
DE3616196A1 (en) * 1986-05-14 1987-11-19 Seydel Spinnereimasch METHOD AND DEVICE FOR BRAIDING FIBER TAPES
DE3935264B4 (en) * 1988-10-21 2005-02-10 Toyo Boseki K.K. Molding composition for thermoplastic composites
JPH06100246A (en) * 1992-09-21 1994-04-12 Kanebo Ltd Tow jointing device
DE69825948T2 (en) * 1997-02-14 2005-09-29 Toray Industries, Inc. BUNDLE OF PRECURSOR CARBON FIBER, DEVICE AND METHOD FOR THE PRODUCTION THEREOF
DE19933360A1 (en) * 1999-07-16 2001-01-18 Saechsisches Textilforsch Inst Process for strengthening fiber and / or filament nonwovens
US6722116B1 (en) * 1999-11-26 2004-04-20 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Method and apparatus for manufacturing fiber bundle with injected air
DE10320694A1 (en) * 2003-05-02 2004-11-18 Sommer, Klaus, 15366 Münchehofe Method for producing textile material consolidated by a fluid jet process involves controlled alteration of the shape/direction of parts of the material before the fluid jet process is applied

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