DE10251581A1 - Manufacture of a shaped textile fiber preform for production of fiber reinforced plastic components comprises placement and orientation of a fiber pre product on a supporting tool - Google Patents

Manufacture of a shaped textile fiber preform for production of fiber reinforced plastic components comprises placement and orientation of a fiber pre product on a supporting tool

Info

Publication number
DE10251581A1
DE10251581A1 DE2002151581 DE10251581A DE10251581A1 DE 10251581 A1 DE10251581 A1 DE 10251581A1 DE 2002151581 DE2002151581 DE 2002151581 DE 10251581 A DE10251581 A DE 10251581A DE 10251581 A1 DE10251581 A1 DE 10251581A1
Authority
DE
Germany
Prior art keywords
fibers
textile
semi
process
fiber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
DE2002151581
Other languages
German (de)
Other versions
DE10251581B4 (en
Inventor
Eberth Ulrich
Joern Paul
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.)
Airbus Operations GmbH
Original Assignee
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Airbus Operations GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DE10210104 priority Critical
Priority to DE10210104.3 priority
Application filed by Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV, Airbus Operations GmbH filed Critical Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Priority to DE2002151581 priority patent/DE10251581B4/en
Priority claimed from EP20030004111 external-priority patent/EP1342554B1/en
Priority claimed from DE10320791.0A external-priority patent/DE10320791B4/en
Publication of DE10251581A1 publication Critical patent/DE10251581A1/en
Publication of DE10251581B4 publication Critical patent/DE10251581B4/en
Application granted granted Critical
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04CBRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C1/00Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof
    • D04C1/06Braid or lace serving particular purposes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06Fibrous reinforcements only
    • B29C70/10Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/16Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
    • B29C70/22Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in at least two directions forming a two dimensional structure
    • B29C70/222Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in at least two directions forming a two dimensional structure the structure being shaped to form a three dimensional configuration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28Shaping operations therefor
    • B29C70/30Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28Shaping operations therefor
    • B29C70/30Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/32Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core on a rotating mould, former or core

Abstract

Process for producing textile preforms from semi-finished textile products, the preforms being intended in particular for the production of fiber-reinforced plastics, which are preferably impregnated with an adhesive resin using a matrix system and cured at elevated temperature and, if appropriate, increased pressure. DOLLAR A In order to create a component-adapted process in which two- or three-dimensional semi-finished products manufactured according to different textile processes can be used for the textile preforms, the textile semi-finished products are each applied to a carrier with a contour or adapted geometry corresponding to the later preforms. At the end of a fiber-arranged two- or three-dimensional textile process, the fibers of the semi-finished textile products, which have not yet been finally fixed, are brought into a desired orientation by a shaping and draping process.

Description

  • The invention relates to a method for producing textile preforms. from semi-finished textile products (preliminary products), the preforms especially for Manufacture of fiber reinforced plastics are provided, preferably using a matrix system soaked with an adhesive resin and under elevated temperature and, if necessary, increased pressure.
  • Different textiles are used in the manufacture of fiber-reinforced plastics Intermediate products, hereinafter also called semi-finished products, for use. In addition to tissues and braids can use nonwovens and other textile fabrics become. These semi-finished products can then be made in different ways Processing processes are assembled and combined with each other and connected. The one there Preforms that have arisen are finally covered with a Soaked matrix system and mostly cured under increased pressure and temperature.
  • Today, textile intermediate products such as B. Tissues and braids at the end of Manufacturing process applied in or on an intermediate carrier. With braids can it be z. B. act cylindrical bodies around which these be wound up in a web. The geometry of these beams is not used for or reshaping the semi-finished products but only as an aid to transport and for storage.
  • In the course of the further manufacturing process, the semi-finished products from the Intermediate carrier body removed again, assembled and then by Reorientation and reshaping of the fiber structure into the desired shape (so-called Preform). Here are some fiber orientations through the Manufacturing process fixed and can no longer be influenced later. For this reason, certain component geometries with semi-finished products are based on those previously mentioned Intermediate carriers were applied, no longer depict, although the actual manufacturing process would enable this geometry.
  • Continuous processes in which the preliminary product is direct are also in use is fed to the further manufacturing process after the surface formation process. The possible reorientation and reshaping of the semi-finished textile happens without the upstream surface formation process being actively geared towards this.
  • An exception is the braiding of cores, where the cores are one desired geometry are braided from the outside to a desired To achieve fiber orientation. The used cores can then be removed become. However, the use of cores only allows certain geometries of the preliminary products. In addition, the core geometry and its dimensions are limited.
  • Another exception are so-called round or spiral fabrics, in which the The length of individual thread systems (e.g. warp threads) is variable, which means that Direction change of the semi-finished product is achieved in the plane.
  • Pre-products can be fixed with the help of a binder. Both The binder systems used are mainly thermoplastic Substances that e.g. B. applied in powder form to the semi-finished product and under Temperature influence can be activated. In addition to determining the fiber orientation can be used to combine the preforms in one to fix compacted state.
  • Braiding technology can do two-dimensional and three-dimensional braiding be distinguished. The three-dimensional braiding enables semi-finished products to create a defined cross-sectional geometry that can also be used during the Manufacturing process can be changed. Through independent leadership of the individual threads of the braid z. B. L- or U-shaped cross sections of the Preproducts are generated. The resulting fiber structures are close to the final contour and have moderate draping behavior. The two-dimensional braiding is in so-called circular braiding machines realized. The resulting semi-finished product deals it is a tubular structure in which there are no fibers with an orientation can be introduced in the radial direction (90 ° to the surface of the hose).
  • Two-dimensional braids are well draped and can be used as flat or tubular semi-finished products can be processed. During the braiding process it is possible to define fiber orientations by rewrapping core geometries and to achieve semi-finished product geometries. By introducing stretched fibers (so-called standing threads) in the pull-off direction will drape in some Spatial directions reduced.
  • The invention is based on the object, a component-adapted To create manufacturing processes of the type mentioned, in which according to different Textile process manufactured two or three-dimensional semi-finished products for the textile Preforms can be used.
  • The object is achieved in that the textile semi-finished products each on a carrier with a corresponding to the later preforms Contour or adapted geometry are applied, and that at the end of a surface-forming textile process, the fibers of the semi-finished textile products through a forming and draping process into a desired one Orientation.
  • A major advantage of the invention is that the semi-finished products are not the first be applied to the intermediate carrier, but to a carrier that the one later adapted component or preform has adapted contour. There is one Interaction, d. H. an interrelation between the area formation process and the forming or draping process possible, so that z. B. the different Pull-off lengths of standing threads are taken into account when forming into a disc can. By reshaping and draping are advantageously still slidable fibers brought into a desired orientation. Unlike braiding around cores, are other fiber orientations with the inventive method and geometries possible. The dimensions of the preforms and their geometry are far less restricted. For example, cylindrical preforms with in Draw-off direction can be made using 360 ° circumferential fibers.
  • It is therefore advantageously possible to carry out the intermediate step of applying the Omit semi-finished product on an intermediate carrier. In the invention Procedures are combined surface formation process and forming process, so that Geometries can be realized using the conventional manufacturing processes are not possible. The inventive method uses the state that on At the end of the surface-forming textile process, the fibers have not yet been finally fixed are. By reshaping and draping they are still at this point slidable fibers brought into a desired orientation. This orientation can z. B. can be realized by an intermediate carrier adapted in geometry. The elimination of the intermediate step has the advantage that damage and Ondulation of the fibers can be reduced by manipulations.
  • Embodiments of the invention are described in subclaims 2 to 9. It is taken into account here that the fibers can be pre-oriented by means of appropriate shaping aids and guides during the braiding. The forming and draping process that directly follows the textile manufacturing process can be implemented using different processes and tools. Z are conceivable. B .:
    • A) pulling through or along a forming tool (die), the cross-section and z. T. also changed the fiber orientation (e.g. a curved matrix allows the standing threads to be draped in the braided sleeve).
    • B) winding on a forming tool (die), the cross section and z. T. also changed the fiber orientation.
    • C) pressing or pressing in or along a forming tool (die), the cross-section and z. T. also changed the fiber orientation.
  • In addition to forming and draping, the semi-finished product can be compacted at the same time become.
  • The fibers can be fixed after the shaping and draping process using the fibers themselves, a binder or a matrix system:
    • a) Fixation by the fibers themselves: The friction that the fibers have against each other prevents them from slipping.
    • b) Fixation by binder: The fibers are fixed by introducing a binder before, during or after the shaping or draping process.
    • c) Fixation by means of matrix material: before, during or after the shaping or draping process, the matrix material is introduced into the fibers and
    • d) partially or completely hardened or the viscosity of the resin reduced. This enables the fibers to be fixed.
  • In principle, many different textile production processes are conceivable for the process according to the invention, for example:
    • a) Textile manufacturing processes for two-dimensional structures (e.g. 2D weaving, 2D knitting, knitting, 2D braiding, nonwovens) or
    • b) Textile manufacturing processes for three-dimensional structures (e.g. 3D weaving, spacer fabrics, knitting, 3D braiding)
  • In the drawing, an embodiment according to the invention is shown, and shows:
  • Fig. 1 is a block diagram for a flow of a method according to the invention, and
  • Fig. 2a and 2b show a device for carrying out the method according to Fig. 1 in front and side view.
  • In Fig. 1, the following process steps in the form of blocks for producing a textile preform from a semi-finished textile (preliminary product) are shown in the drawing to explain the general concept using the example of a braiding process: Braiding process 1 for a loose and drapable pre-braid 2 ; possible order 3 of a binder on the pre-braid, e.g. B. powdered binder; Forming or draping process 4 of the braid 2 ; Fixing 5 of the pre-braid 2 to a semi-finished textile; Application 6 of the semi-finished textile to a carrier and subsequent processing 7 of the semi-finished product to a textile preform, which is provided for the production of a fiber-reinforced plastic article. An interaction can take place between the braiding process 1 , ie the surface formation process 1 , and the forming or draping process 4 , which is illustrated by the connecting line 8 .
  • The From Fig. 2a and Fig. 2b apparent principal device, in addition to the other device examples are possible, showing a rotating carrier and forming tool 9, comprising a drum 10 with a laterally attached to the drum 10 limiting plate 11 whose diameter over the Diameter of the drum 10 goes out. Which is on the drum 10 loose, drapable and possibly provided with a binder application Vorgeflecht 2 placed, WO at the drum 10 at the same time to the fixed bearing of the Vorgeflechtes 2 and serves to transport the deformed semi-finished product. As can be seen from Fig. 2b, additional deforming and pressing rollers 12 can be provided for the semi-finished product, which are optionally also equipped with a heating or cooling device for the binder. As can also be seen from FIG. 2b, standing threads, ie stretched fibers, of the same length 13 can be arranged on the circumference of the drum 10 , while standing threads of variable length 14 rest against the projecting annular surface of the limiting disk 11 .
  • A similar principle is also used in weaving technology, in which the length of individual thread systems (e.g. warp threads) is designed to be variable. A change of direction in the plane of the textile surface is thus achieved. Such a technique is used for so-called round or spiral fabrics. However, this change of direction only occurs on one level. The new concept would also allow a three-dimensional semi-finished product geometry by shaping and draping directly after the weaving process. LIST OF REFERENCES 1 braiding
    2 pre-braid
    3 binder order
    4 Forming or draping process
    5 Fix the pre-braid
    6 Application of the semi-finished textile
    7 Processing of the semi-finished product
    8 Connection line for interaction
    9 Carrier and forming tool
    10 drum
    11 washer
    12 forming and pressure rollers
    13 standing threads of the same length
    14 standing threads with variable length

Claims (9)

1. A process for producing textile preforms from semi-finished textile products, the preforms being intended in particular for the production of fiber-reinforced plastics which are preferably impregnated with an adhesive resin using a matrix system and cured at elevated temperature and, if appropriate, increased pressure , characterized in that the semi-finished textile products are each applied to a carrier ( 9 ) with a contour or adapted geometry corresponding to the later preforms, and that at the end of a fiber-arranged two- or three-dimensional textile process ( 1 ) the fibers that have not yet been finally fixed ( 14 ) the semi-finished textile products are brought into a desired orientation by a shaping and draping process ( 4 ).
2. The method according to claim 1, characterized in that the unfixed fibers ( 14 ) are oriented by pulling through or along a forming tool ( 9 ) which changes the cross-section and partly also the orientation of the fibers.
3. The method according to claim 2, characterized in that a curved die for draping defined semifinished products entering the process, which can also contain standing threads, is used in a textile semifinished product as the forming tool ( 9 ).
4. The method according to claim 1, characterized in that the unfixed fibers are oriented by winding or depositing them on a cross-section of the semi-finished textile and in part also changing the orientation of the fibers forming tool ( 9 ).
5. The method according to claim 1, characterized in that the unfixed fibers by pressing or pressing in or along a cross-section of the textile semi-finished product and in part also the orientation of the fibers changing forming tool ( 9 ) are oriented.
6. The method according to claim 4 or 5, characterized by the use of a die as a forming tool ( 9 ).
7. The method according to any one of claims 1, 2, 3, 4, 5 or 6, characterized in that that the fibers due to the friction preventing the fibers from slipping be fixed against each other.
8. The method according to any one of claims 1, 2, 3, 4, 5 or 6, characterized in that that the fibers by introducing a binder before, during or after a Forming or draping process can be fixed.
9. The method according to any one of claims 1, 2, 3, 4, 5 or 6, characterized in that the fibers are fixed by introducing and partially or completely curing the matrix material before, during or after a shaping or draping process ( 4 ) ,
DE2002151581 2002-03-08 2002-11-06 Process for producing textile preforms from textile semi-finished products Expired - Fee Related DE10251581B4 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE10210104 2002-03-08
DE10210104.3 2002-03-08
DE2002151581 DE10251581B4 (en) 2002-03-08 2002-11-06 Process for producing textile preforms from textile semi-finished products

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE2002151581 DE10251581B4 (en) 2002-03-08 2002-11-06 Process for producing textile preforms from textile semi-finished products
EP20030004111 EP1342554B1 (en) 2002-03-08 2003-02-26 Method for making textile preforms from textile half-products
AT03004111T AT456993T (en) 2002-03-08 2003-02-26 Method of manufacturing textile pockets of suspended semi-finished materials
DE2003512393 DE50312393D1 (en) 2002-03-08 2003-02-26 Process for producing textile preforms from textile semi-finished products
US10/385,287 US7008580B2 (en) 2002-03-08 2003-03-10 Method of producing textile preforms for fiber reinforced composite products from textile semi-finished articles
DE10320791.0A DE10320791B4 (en) 2002-11-06 2003-04-30 Process for producing textile preforms from textile semi-finished products

Publications (2)

Publication Number Publication Date
DE10251581A1 true DE10251581A1 (en) 2003-10-16
DE10251581B4 DE10251581B4 (en) 2007-04-12

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DE2003512393 Active DE50312393D1 (en) 2002-03-08 2003-02-26 Process for producing textile preforms from textile semi-finished products

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006004914A1 (en) * 2006-02-01 2007-08-23 Otto Bock Healthcare Ip Gmbh & Co. Kg Spacer knit and method for its production
DE102009047340A1 (en) * 2009-12-01 2011-06-09 Airbus Operations Gmbh Method for forming a structural component of an aircraft or spacecraft and forming device
DE102005000115B4 (en) * 2004-09-14 2011-08-18 KARL MAYER Malimo Textilmaschinenfabrik GmbH, 09117 Method for producing a multidirectional fabric
DE102010029437A1 (en) 2010-05-28 2011-12-01 Voith Patent Gmbh Method for manufacturing textile preform for fiber reinforced plastic (FRP) component, involves transforming semi-finished textile material subsequently by applying thermal force using shaping device and cooling textile material
DE102010031604A1 (en) 2010-07-21 2012-01-26 Voith Patent Gmbh Producing prefabricated textile structure e.g. pre-mold to produce structural component of fiber-reinforced plastic, comprises transforming textile semi-finished products into meandering textile structure in shaping device by rollers
DE102011054703A1 (en) 2011-10-21 2013-04-25 Benteler Sgl Gmbh & Co. Kg Manufacturing preforms useful for producing fiber composite components, comprises mounting a drape tool at a fiber textile, and introducing fiber textile into a mold cavity, where the drape tool is compressed during closing the mold cavity

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015102467A1 (en) 2015-02-20 2016-08-25 Airbus Operations Gmbh Depositing device for depositing a semifinished product for producing a fiber-reinforced component

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4214636A1 (en) * 1992-04-26 1993-10-28 Inst Polymerforschung Dresden Formable, multiaxial reinforcement structure
DE19809264C2 (en) * 1998-03-04 2003-06-26 Eldra Kunststofftechnik Gmbh Fiber lay-up and method for making a preform

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005000115B4 (en) * 2004-09-14 2011-08-18 KARL MAYER Malimo Textilmaschinenfabrik GmbH, 09117 Method for producing a multidirectional fabric
DE102006004914A1 (en) * 2006-02-01 2007-08-23 Otto Bock Healthcare Ip Gmbh & Co. Kg Spacer knit and method for its production
DE102006004914B4 (en) * 2006-02-01 2010-03-11 Otto Bock Healthcare Gmbh Spacer knit and method for its production
US7779654B2 (en) 2006-02-01 2010-08-24 Otto Bock Healthcare Ip Gmbh & Co. Kg Knitted spacer fabric and method for the production thereof
DE102009047340A1 (en) * 2009-12-01 2011-06-09 Airbus Operations Gmbh Method for forming a structural component of an aircraft or spacecraft and forming device
DE102009047340B4 (en) * 2009-12-01 2011-07-14 Airbus Operations GmbH, 21129 Method for forming a structural component of an aircraft or spacecraft and forming device
US9375882B2 (en) 2009-12-01 2016-06-28 Airbus Operations Gmbh Method for forming a structural component of an aircraft or spacecraft, and forming device
DE102010029437A1 (en) 2010-05-28 2011-12-01 Voith Patent Gmbh Method for manufacturing textile preform for fiber reinforced plastic (FRP) component, involves transforming semi-finished textile material subsequently by applying thermal force using shaping device and cooling textile material
DE102010031604A1 (en) 2010-07-21 2012-01-26 Voith Patent Gmbh Producing prefabricated textile structure e.g. pre-mold to produce structural component of fiber-reinforced plastic, comprises transforming textile semi-finished products into meandering textile structure in shaping device by rollers
DE102011054703A1 (en) 2011-10-21 2013-04-25 Benteler Sgl Gmbh & Co. Kg Manufacturing preforms useful for producing fiber composite components, comprises mounting a drape tool at a fiber textile, and introducing fiber textile into a mold cavity, where the drape tool is compressed during closing the mold cavity
DE102011054703B4 (en) * 2011-10-21 2015-01-15 Benteler Sgl Gmbh & Co. Kg Process for producing preforms for further processing into fiber composite components

Also Published As

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DE50312393D1 (en) 2010-03-25
DE10251581B4 (en) 2007-04-12
AT456993T (en) 2010-02-15

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