DE102010031604A1 - 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 - Google Patents

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

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Publication number
DE102010031604A1
DE102010031604A1 DE201010031604 DE102010031604A DE102010031604A1 DE 102010031604 A1 DE102010031604 A1 DE 102010031604A1 DE 201010031604 DE201010031604 DE 201010031604 DE 102010031604 A DE102010031604 A DE 102010031604A DE 102010031604 A1 DE102010031604 A1 DE 102010031604A1
Authority
DE
Germany
Prior art keywords
textile
semi
characterized
finished
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.)
Withdrawn
Application number
DE201010031604
Other languages
German (de)
Inventor
Christoph Sickinger
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.)
Voith Patent GmbH
Original Assignee
Voith Patent 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
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Priority to DE201010031604 priority Critical patent/DE102010031604A1/en
Publication of DE102010031604A1 publication Critical patent/DE102010031604A1/en
Withdrawn legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B11/00Making preforms
    • B29B11/14Making preforms characterised by structure or composition
    • B29B11/16Making preforms characterised by structure or composition comprising fillers or reinforcement
    • 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
    • B29C53/00Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/22Corrugating
    • B29C53/24Corrugating of plates or sheets
    • B29C53/28Corrugating of plates or sheets transverse to direction of feed
    • B29C53/285Corrugating of plates or sheets transverse to direction of feed using rolls or endless bands
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H3/00Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/002Inorganic yarns or filaments
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H3/00Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/002Inorganic yarns or filaments
    • D04H3/004Glass yarns or filaments
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H3/00Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/02Non-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
    • D04H3/04Non-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
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H3/00Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/12Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with filaments or yarns secured together by chemical or thermo-activatable bonding agents, e.g. adhesives, applied or incorporated in liquid or solid form

Abstract

Producing a prefabricated textile structure including a pre-mold (6) for producing a structural component of fiber-reinforced plastic, preferably profiled carrier, comprises transforming first textile semi-finished products (4) with a binder system into a meandering textile structure in a shaping device (1) by profiled rollers in a corrugator method. Independent claims are also included for: a device for producing the prefabricated textile structure including the pre-mold for producing the structural component of the fiber-reinforced plastic, preferably profiled carrier, comprising a material supplier (5), the shaping device and the removal device, where the shaping device comprises a pair of the rollers, with which the textile semi-finished products are transformable in the corrugator method; and #the structural component of the fiber-reinforced plastic, comprising at least a pre-mold close to the final contour, where the pre-mold is impregnated with an adhesive resin by a matrix system, and cured under elevated temperature and optionally elevated pressure, and the pre-mold is produced by the above method and/or the device.

Description

  • The invention relates to a method for producing a prefabricated textile structure, such as. B. a preform, for producing a component made of fiber-reinforced plastic, in particular profiled carrier, using textile semi-finished products (Gelegebahnen) with a binder system.
  • Furthermore, the invention relates to a forming device for producing a preform and a component with a preform produced accordingly.
  • The solution set forth in the invention relates in particular to the technical need for cost-effective lightweight stiffening profiles made of fiber composites, comparable to the standardized and automated production of extruded aluminum profiles in metal construction.
  • Such profiles are versatile, for example in aircraft for the production of CFRP fuselage frames.
  • Components made of fiber-reinforced plastic according to the invention are in particular reinforced with carbon fibers plastic components or fiber composite structures (CFRP but also fiberglass etc.).
  • The binder system consists of a binder material which adheres to the textile semifinished product or is applied to this and by z. B. heating is activated.
  • A preform is a prefabricated textile structure, a precursor that already has the shape of the component to be manufactured and is impregnated in a subsequent process in a matrix system, an adhesive resin, and then cured at elevated temperature and optionally elevated pressure.
  • The construction of a preform with difficult geometric contours, especially for use in a CFRP bulkhead frame, is a complex structure with a complex layer structure.
  • To produce these complex preforms individual fiber mat blanks are given in a rigid form in the prior art, with great manual effort, positioned to each other, draped and fixed. In general, the main difficulty in draping / depositing the textile fiber mat blanks on complex shaped forms is that the fiber progressions change due to shearing in the material. Due to the complexity of the draping operations, this can not be achieved by state-of-the-art machines or can only be achieved to a limited extent in sufficient quality.
  • In the manual filing, as is common in the prior art, the filing quality and reproducibility is subject to significant fluctuations. In addition, the filing speed and productivity is low.
  • Automation concepts for textile preforming of curved and profiled supports are z. B. from the DE10251581 known. Here, the semi-finished textile products are braided immediately before application to a carrier with the desired contour. Disadvantages of braiding are, for example, a low productivity (slow withdrawal speed) and a comparatively low structural performance, since the braiding process, unlike laminate structures, is based on the principle of fiber entanglements (lower strength, stiffness).
  • It is therefore the object of the invention to provide a method and an apparatus for producing a textile preform with which they can be produced automatically.
  • The object is achieved by means of the method and with the features of claim 1 and the device according to claim 10.
  • According to the invention, a method for producing a prefabricated textile structure, such. B. a preform for producing a component made of fiber-reinforced plastic, in particular profiled carrier, using textile semifinished products (Gelegebahnen) proposed with a binder system and a forming device, wherein the semi-finished textile products (Gelegebahnen) in the forming device using profiled rollers, in Corrugatorverfahren, be converted to a meandering textile structure.
  • The corrugator method offers the advantage that the textile blanks (plain weaves) that have just been fed can be continuously and automatically reshaped with consistent quality.
  • Furthermore, it is provided that the semi-finished textile products in the forming, at least partially thermally treated after forming into a meandering textile structure, so that the binder system is at least partially activated and retain the preforms after removal from the profiled central roll their shape. If the binding system is only partially activated, it is particularly advantageously possible to further deform the preform in subsequent processes.
  • In order to achieve special properties of the preform, it is also proposed to partially apply further textile semifinished products (local reinforcements) before or after the forming of a fabric web onto them.
  • Furthermore, several layers of semi-finished textile products can be laid on top of one another in the corrugator method, in which case further local reinforcements between two layers of textile semi-finished products can be partially introduced.
  • Preferably, the local gains are introduced by means of a robotic effector.
  • After completion of the Corrugatorverfahrens and the thermal treatment, the meandering present textile structure, the contiguous preforms, removed from the profiled central roll and
    • a) cut into individual profiles in the transverse direction or
    • b) cut into individual profiles in the transverse direction and then deformed in a device in the transverse direction or
    • c) deformed in a device in the transverse direction and then cut into individual profiles in the transverse direction
    become.
  • A further embodiment of the method provides to take down the meandering textile structure, the contiguous preforms, after completion of Corrugatorverfahrens and the thermal treatment together with the forming elements of the central roll of this and handed over for further deformation to another device. This can be, for example, a device for arcuate forming of the meander-shaped textile structure. The same method steps, as already described, can be used.
  • The semifinished textile products (Gelegebahnen) according to the invention preferably consist of carbon and / or glass fibers. Preference is given to + -45 ° Gelegebahnen used, but it can also 0 ° layers are used, especially for partial reinforcements.
  • The textile semi-finished products can also be fixed in order to improve the process flow in the mold or the profiled central roll, preferably with vacuum.
  • For thermal fixing of the preform this is wholly or partially, heated to a temperature between 80 and 120 ° and cooled again.
  • The corresponding device for producing a prefabricated textile structure consists of a material supply, a forming device and a removal device, wherein the forming device consists of a pair of rollers, with the textile semi-finished product can be deformed in Corrugatorverfahren.
  • Wherein one of the rollers is a central roll on which the supplied semi-finished textile can be stored and fixed and the second roller presses the supplied textile semifinished product into the shape of the central roller.
  • Furthermore, a robot effector may be present, with which partial textile semi-finished products, reinforcements, can be applied to the fabric web before or after the forming of the fabric webs.
  • In a further embodiment, at least one further material feed and roller, which presses a further fed-in jelly web into the shape of the central roll, can be provided.
  • Furthermore, the central roll can be equipped with forming elements which are removable for further shaping of the central roll.
  • In a further working step, a component is produced from the near-net shape preform, which consists at least of a preform, which were produced by means of the method or with the aid of the forming device, and impregnated by means of a matrix system with an adhesive resin and elevated temperature and optionally elevated Pressure is cured.
  • The invention will be explained in more detail with reference to an embodiment.
  • It shows in a schematic representation:
  • 1 schematic representation to illustrate the composite curiosity (supervision)
  • 2 Side view of a device according to the invention with two material inlets
  • 1 shows the schematic representation for illustrating the composite curiousness, a method for producing a prefabricated textile structure, such. B. a preform 6 for producing a component made of fiber-reinforced plastic, in particular profiled carrier, using textile semi-finished products, Gelegebahnen 4 , with a binder system.
  • Starting point of production are individual rovings 3 (Fiber strands) that are in a binder machine 2 (for example, a conventional active / Weaving machine) to a flat jelly line 4 be knitted / woven continuously. Alternatively, for example, appropriately prefabricated and "bound" scrim or fabric rolls serve as feed.
  • From the binder machine 2 enters the jelly line 4 via a material feed 11 (not shown) in the corrugator 7 , There is the jelly line 4 by means of Corrugatorwalzen 9 . 10 meandering shaped. To reinforce the preforms produced in Corrugatorverfahren may partially further textile blanks, reinforcements 12 , by means of robot effectors 8th be introduced. These textile blanks serve as reinforcements and are preferably assembled and provided directly next to the machine by an automatic spreader / cutter combination, so that they are picked up by the robot effectors and aimed at the jelly line 4 can be placed and molded or applied.
  • For fixation, the transformed gauze 4 and reinforcements 12 in which a corresponding binder system is contained, on the central roll 9 heated to a temperature between 80 ° C and 120 ° C, so that the binder system is activated. The temperature treatment can also be partial.
  • After completion of the corrugating and the thermal treatment, there is a coherent meander-prefabricated textile structure, which in the corresponding places in a subsequent process step in the transverse direction to individual preforms 6 is cut. The method is therefore primarily suitable for the production of Z- or omega-shaped preforms.
  • The preforms 6 can in a further process step in a forming device to curved preforms 6 be transformed.
  • In 2 is a side view of a device according to the invention with two material inlets 5 shown, with which two fiber webs 4 can be supplied to the corrugator.
  • In the example, two plain webs are used 4 over pulleys 13 a system of profiled rollers 9 . 10 fed. A jelly line can have a layer structure + 45 ° / -45 °, the other -45 ° / + 45 °.
  • In the example, first a + -45 ° Gelegebahn 4 by shaping the rollers 9 . 10 transformed into a meandering contour. After forming, the web remains in the contour of the central roll 9 and is preferably fixed there. The fixation can z. B. by means of vacuum, wherein the central roller 9 for this purpose has a perforated surface.
  • As the process continues, appropriately synchronized robot effectors apply 8th more local reinforcements 12 on the previously formed + 45 ° / -45 ° -learing 4 , These may be, for example, simple reinforcing patches or unidirectional slivers (tapes).
  • In the further course of the process is now by the roller pairing 9 and 10 one corresponding to the first + 45 / -45 ° orbital 4 mirror-symmetrically arranged + 45 / -45 ° -learing 4 corrugiert. In this way, on the one hand, a symmetrical construction of the base laminate can be achieved (+ 45 / -45 ° / -45 ° / + 45 °), on the other hand, the reinforcements applied by the robot effectors are connected on two sides to the base laminate (interleaved), which is highly advantageous or required for highly loaded components (eg CFRP frames).
  • The continuous process described above is repeated until the desired layer structure or the desired wall thickness is reached, and during circulation in the corrugator, the jelly web (s) with further textile reinforcements 12 be fitted.
  • After completion of the curling and the thermal treatment, the meander-shaped jelly line (s) 4 from the central roll 9 removed and fed to a further processing and
    • a) cut into individual profiles in the transverse direction or
    • b) cut into individual profiles in the transverse direction and then deformed in a device in the transverse direction or
    • c) deformed in a device in the transverse direction and then cut into individual profiles in the transverse direction.
  • The central roller 9 can also consist of a roller body, are applied to the meandering moldings, preferably hyperelastic moldings. For further processing, in particular the arcuate transformation, these hyperelastic molded parts can then, together with the still connected preforms, be removed from the central roll and then, as described, further processed.
  • LIST OF REFERENCE NUMBERS
  • 1
    reshaping
    2
    binder machine
    3
    roving
    4
    textile semi-finished products
    5
    material supply
    6
    preform
    7
    corrugator
    8th
    Robot effectors
    9
    central roll
    10
    roller
    11
    material supply
    12
    reinforcement
    13
    guide rollers
  • QUOTES INCLUDE IN THE DESCRIPTION
  • This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
  • Cited patent literature
    • DE 10251581 [0011]

Claims (15)

  1. Process for the preparation of a prefabricated textile structure, such. B. a preform ( 6 ) for producing a component made of fiber-reinforced plastic, in particular profiled carrier, using textile semi-finished products ( 4 ) (Gelegebahnen) with a binder system and a forming device ( 1 ), characterized in that the semi-finished textile products ( 4 ) in the forming device ( 1 ) using profiled rollers ( 9 . 10 ) are converted by corrugator to a meandering textile structure.
  2. A method according to claim 1, characterized in that the textile semi-finished products ( 4 ) in the forming device ( 1 ) after forming into a meandering textile structure, the contiguous preforms ( 6 ), at least partially thermally treated so that the binder system is at least partially activated and the preforms ( 6 ) after removal from the profiled roller at least largely retain their shape.
  3. A method according to claim 1, characterized in that partially additional semi-finished textile products ( 12 ) before or after forming a semi-finished textile product ( 4 ) are applied to this.
  4. Process according to claim 3, characterized in that partially semi-finished textile products ( 12 ) by means of robot effectors ( 8th ) are introduced.
  5. Method according to one of the preceding claims, characterized in that several layers of semi-finished textile products ( 4 ) are superimposed in Corrugatorverfahren.
  6. Method according to one of the preceding claims, characterized in that the meander-shaped textile structures, the contiguous preforms ( 6 ), after completion of the Corrugatorverfahrens and the thermal treatment of the profiled roller ( 9 ) and a) cut into individual profiles in the transverse direction or b) cut into individual profiles in the transverse direction and then deformed in a device in the transverse direction or c) deformed in a device in the transverse direction and then cut into individual profiles in the transverse direction.
  7. Method according to one of the preceding claims, characterized in that the meander-shaped textile structures, the contiguous preforms ( 6 ), upon completion of the corrugating process and the thermal treatment, together with the forming elements, are transferred from the profiled roll for further deformation.
  8. A method according to claim 1, characterized in that the semi-finished textile products ( 4 ) consist of carbon and / or glass fibers.
  9. A method according to claim 1, characterized in that the temperature for thermal fixing between 80 and 120 °.
  10. Apparatus for producing a prefabricated textile structure, such. B. a preform ( 6 ), for producing a component made of fiber-reinforced plastic, in particular profiled carrier, with a material feed ( 5 ), a forming device ( 1 ) and a removal device characterized in that the forming device ( 1 ) from a pair of rollers ( 9 . 10 ), with the semi-finished textile products ( 4 ) are deformable in Corrugatorverfahren.
  11. Apparatus according to claim 10, characterized in that the one roller is a central roller ( 9 ) is, on which the supplied semi-finished textile ( 4 ) can be stored and fixed and the second roller ( 10 ) the supplied semi-finished textile product ( 4 ) in the shape of the central roll ( 9 ) presses.
  12. Apparatus according to claim 10, characterized in that a robot effector ( 8th ) is present, with the partially textile semi-finished products ( 12 ) on the textile semifinished product ( 4 ), before or after forming a semi-finished textile product ( 4 ), can be applied.
  13. Apparatus according to claim 11, characterized in that at least one further material supply ( 5 ) and roller ( 10 ), which is another semi-finished textile product ( 4 ) in the shape of the central roll ( 9 ), exists.
  14. Device according to one of claims 10 to 13, characterized in that the central roller ( 9 ) is equipped with shaping elements, which for further shaping of the central roller ( 9 ) are removable.
  15. Components made of fiber-reinforced plastic, consisting of at least one near-net shape preform ( 6 ), which is impregnated by means of a matrix system with an adhesive resin and cured under elevated temperature and optionally elevated pressure, characterized in that the preform ( 6 ) is produced by the method according to claim 1 to 9 and / or by means of the device according to claim 10 to 14.
DE201010031604 2010-07-21 2010-07-21 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 Withdrawn DE102010031604A1 (en)

Priority Applications (1)

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DE201010031604 DE102010031604A1 (en) 2010-07-21 2010-07-21 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

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201010031604 DE102010031604A1 (en) 2010-07-21 2010-07-21 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

Publications (1)

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DE102010031604A1 true DE102010031604A1 (en) 2012-01-26

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013100862A1 (en) * 2013-01-29 2014-07-31 Deutsches Zentrum für Luft- und Raumfahrt e.V. Producing preform from flat and planar fiber semi-finished product, comprises e.g. preparing sheared fiber semi-finished product from flat and planar semi-finished fiber product by shearing the flat and planar fiber semi-finished product

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10251581A1 (en) 2002-03-08 2003-10-16 Airbus Gmbh 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

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10251581A1 (en) 2002-03-08 2003-10-16 Airbus Gmbh 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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013100862A1 (en) * 2013-01-29 2014-07-31 Deutsches Zentrum für Luft- und Raumfahrt e.V. Producing preform from flat and planar fiber semi-finished product, comprises e.g. preparing sheared fiber semi-finished product from flat and planar semi-finished fiber product by shearing the flat and planar fiber semi-finished product
DE102013100862B4 (en) * 2013-01-29 2015-10-15 Deutsches Zentrum für Luft- und Raumfahrt e.V. Method of preforming

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