EP0527092A1 - Textile Armierung benutzbar für die Herstellung von geschichteten Zusammenstellungen und Verfahren zu deren Erhalt - Google Patents

Textile Armierung benutzbar für die Herstellung von geschichteten Zusammenstellungen und Verfahren zu deren Erhalt Download PDF

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Publication number
EP0527092A1
EP0527092A1 EP92420224A EP92420224A EP0527092A1 EP 0527092 A1 EP0527092 A1 EP 0527092A1 EP 92420224 A EP92420224 A EP 92420224A EP 92420224 A EP92420224 A EP 92420224A EP 0527092 A1 EP0527092 A1 EP 0527092A1
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EP
European Patent Office
Prior art keywords
wires
braid
threads
series
angle
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
EP92420224A
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English (en)
French (fr)
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EP0527092B1 (de
Inventor
André Fourezon
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.)
Fils dAuguste Chomarat et Cie SA
Original Assignee
Fils dAuguste Chomarat et Cie SA
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Publication of EP0527092A1 publication Critical patent/EP0527092A1/de
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Anticipated expiration legal-status Critical
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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C1/00—Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof
    • D04C1/02—Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof made from particular materials
    • 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
    • D10B2403/02411—Fabric incorporating additional compounds enhancing mechanical properties with a single array of unbent yarn, e.g. unidirectional reinforcement 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 an improvement made to the textile reinforcements used for the production of laminate complexes, that is to say articles based on resin (polyester or others), reinforced by a textile reinforcement structure.
  • Such braided sheaths which are particularly suitable for the production of tubular articles, are constituted, in a known manner, by two series of interlaced wires arranged at an angle with respect to the generator of the braid. During the manufacture of these braids, the wires are generally oriented at 45 ° relative to the generator. This material being deformable, it is therefore possible to play on this deformability to obtain laminate complexes of variable shapes and / or to vary the resistance either in the longitudinal direction or in the transverse direction. Thus, it is possible to considerably improve the longitudinal resistance by stretching the braid lengthwise, which causes the tubular sheath to tighten, and directs the wires which compose it in a direction which tends to approach the generator.
  • Such braids made up of two series of crossed threads are generally designated by the expression "bidirectional braids”.
  • braids designated by the expression "three-way braids", in which a third series of wires is arranged parallel to the generator and is trapped between the two series of wires arranged in bias.
  • Such three-way braids can be used either alone or optionally have an internal core as described in FR-A-2 379 376.
  • such reinforcing structures are suitable for the production of cylindrical elements (tubes, windsurfing masts, tennis rackets, etc.), on the other hand, they are not suitable when it is desired to make materials thin laminates, flat or shaped, obtained in particular according to the technique known as "pultrusion", a technique which, in general, consists in producing profiles continuously by extruding a thermosetting resin and continuously incorporating a reinforcement therein textile and which therefore involves significant tensioning, and therefore requires the use of non-deformable reinforcements, a property incompatible with that of a braid where, by nature, the threads can be easily moved relative to each other.
  • the three-way reinforcement according to the invention can, for its part, be obtained according to a simple process, on conventional braiding material, without any adaptation of the latter as regards the production of the basic three-way braid entering its realization, and this according to a simple process which is also part of the invention.
  • the three-way reinforcement according to the invention is in the form of a flat strip, very long in relation to its width, and which comprises three series of wires oriented differently with respect to the others, two being arranged at an angle, in opposite directions to each other, with respect to the length of the strip, and the wires of the third being, for their part, arranged parallel to the length, and trapped between the two series of threads arranged at an angle, and it is characterized in that said longitudinal threads consist at least in part of threads having iron-on properties, the adhesive characteristics of which are revealed after the braid has been produced, and allow the layers to be bonded bidirectional external without possibility of displacement of the positioning of the wires with respect to each other.
  • a material which not only has the advantages of braided textile reinforcements (orientation of the filaments at an angle with respect to the length and this, at a determined angle, which can be easily adjusted during the production of the so-called braid), but which does not have the disadvantages (deformability) which are harmful when it is desired to produce a profiled structure, the wires of the unidirectional ply being, moreover, kept as flat and as straight as possible, without displacement relative to each other, a necessary condition for obtaining a good quality laminate complex, especially when it is thin.
  • such a structure makes it possible to produce materials which can either be composed of yarns of the same kind (for example entirely based on son of glass, carbon, boron, silica, aromatic polyamide, etc.), or make a combination of different reinforcing threads, for example alternating glass and carbon threads, both in the bidirectional structure and in the undirectional ply. It can also be envisaged to incorporate in one or all of the plies of the metallic wires possibly making it possible to shape the reinforcement material and / or to confer specific properties on it.
  • the invention also relates to a method allowing the production of such a material, said method consisting in forming a tubular braid comprising at least two series of threads intertwined with respect to each other and disposed at an angle with respect to the generator of said sheath. braided, to be introduced simultaneously with the formation of the braid, inside the latter, between the threads arranged at an angle, a series of longitudinal, parallel threads, at least part of which consists of threads having fusible properties, said characterized in that the positioning of the wires (transverse and longitudinal) with respect to each other is fixed on the braiding machine by a heat treatment revealing the properties of the fusible wires.
  • the heat treatment operation can be carried out after having flattened the tubular braid, either optionally by keeping said tubular braid in shape, then, after fixing the wires with respect to each other, by cutting the latter according to a generator and then putting it back flat.
  • the textile reinforcement according to the invention is therefore in the form of a flat strip, designated by the general reference (1 ), very long L compared to its width l . It comprises three series of wires oriented differently from each other. Two of these series of wires (1a, 1b) are arranged at an angle, in opposite directions to each other with respect to the length L of the strip. The wires (2) of the third series are, in turn, arranged parallel to the length L and are trapped between the two series of wires (1a, 1b) which are braided together.
  • the threads (2) of the undirectional sheet consist at least partly of threads having fusible properties revealed by heat treatment.
  • Such threads (2) can be, for example, constituted by threads of the "core / sheath" type, the core being constituted by glass filaments, the sheath by a coating based on a polymer, such as a copolyamide.
  • Such a complex structure is obtained directly on a conventional braiding machine, making it possible to produce a tubular braid comprising two series of wires arranged at an angle (1a, 1b), between which are trapped longitudinal wires (2).
  • the orientation of the wires arranged at an angle is obtained by adjusting, in a known manner, the braiding angle.
  • the braiding angle can either be fixed, which makes it possible to obtain an article of determined width l , or possibly be variable during production, making it possible to obtain a braid of variable section.
  • the tubular braid is subjected to a pressure at the outlet of the machine so that it becomes flat, the heat treatment making it possible to reveal the fusible properties of the longitudinal threads being carried out, either during this flattening phase either after this, which makes it possible to link the different layers of the complex together.
  • the heat treatment revealing the properties of the fusible wires of the unidirectional sheet is carried out by maintaining the braid in its circular form, which then makes it possible to cut it according to a generator to return it to flat and get a wider item.
  • the material according to the invention is produced on a plastic braiding machine, of the "SPIRALTEX” type comprising 96 spindles and therefore making it possible to produce a bidirectional braid having two oriented plies in reverse, and each consisting of 48 wires.
  • the son (2) of the unidirectional sheet are incorporated into the braid in a known manner.
  • the plies forming the threads arranged at an angle (1a, 1b), consist of wicks of carbon threads, having a titer of 400 tex.
  • the unidirectional sheet (wires 2) is constituted by wires of the core / sheath type, the core being based on a 22 tex glass wire and the sheath constituted by a copolyamide-based coating, the melting point of which is approximately 115 ° C.
  • the material comprises on the one hand, fusible wires (2) of the aforementioned type used as a longitudinal element and, on the other hand arranged in parallel with these fusible wires, wires (2a) , made of carbon wicks.
  • the complexes thus produced can be used in numerous applications, such as for example as reinforcements of profiles obtained by pultrusion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Textile Engineering (AREA)
  • Laminated Bodies (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Woven Fabrics (AREA)
  • Reinforced Plastic Materials (AREA)
  • Package Frames And Binding Bands (AREA)
EP92420224A 1991-07-31 1992-06-30 Textile Armierung benutzbar für die Herstellung von geschichteten Zusammenstellungen und Verfahren zu deren Erhalt Expired - Lifetime EP0527092B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9109972 1991-07-31
FR9109972A FR2679931B1 (fr) 1991-07-31 1991-07-31 Armature textile utilisable pour la realisation de complexes stratifies et procede pour son obtention.

Publications (2)

Publication Number Publication Date
EP0527092A1 true EP0527092A1 (de) 1993-02-10
EP0527092B1 EP0527092B1 (de) 1997-04-23

Family

ID=9415955

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92420224A Expired - Lifetime EP0527092B1 (de) 1991-07-31 1992-06-30 Textile Armierung benutzbar für die Herstellung von geschichteten Zusammenstellungen und Verfahren zu deren Erhalt

Country Status (5)

Country Link
EP (1) EP0527092B1 (de)
AT (1) ATE152192T1 (de)
DE (1) DE69219237T2 (de)
ES (1) ES2101067T3 (de)
FR (1) FR2679931B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2753993A1 (fr) * 1996-10-01 1998-04-03 Aerospatiale Structure tubulaire tressee pour piece composite, sa realisation et ses applications

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2982167B1 (fr) 2011-11-04 2014-06-20 Ifsttar Institut Francais Des Sciences Et Technologies Des Transp De Lamenagement Et Des Reseaux Dispositif de protection de l'articulation du genou apte a cooperer avec une chaussure de ski

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2378117A1 (fr) * 1977-01-31 1978-08-18 Oschatz Glasseide Veb Tricot cousu de verre textile
EP0033244A2 (de) * 1980-01-23 1981-08-05 Henry Roy Smith Faserverstärkte Materialien und Verfahren zu ihrer Herstellung und Verwendung
FR2510624A1 (fr) * 1981-07-31 1983-02-04 Verre Tisse Sa Materiau textile tresse pour le renforcement d'articles stratifies
EP0193478A1 (de) * 1985-02-22 1986-09-03 ETABLISSEMENTS LES FILS D'Auguste CHOMARAT et Cie Société anonyme Textile Armierung zur Herstellung von Schichtstoffen
EP0321228A2 (de) * 1987-12-14 1989-06-21 PLAS/STEEL PRODUCTS, INC. (an Indiana corporation) Stützverbindungsglied aus faserverstärktem Kunststoff
EP0327085A1 (de) * 1988-02-02 1989-08-09 E.I. Du Pont De Nemours And Company Direkte Fixierung von geflochtenen Strukturen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2378117A1 (fr) * 1977-01-31 1978-08-18 Oschatz Glasseide Veb Tricot cousu de verre textile
EP0033244A2 (de) * 1980-01-23 1981-08-05 Henry Roy Smith Faserverstärkte Materialien und Verfahren zu ihrer Herstellung und Verwendung
FR2510624A1 (fr) * 1981-07-31 1983-02-04 Verre Tisse Sa Materiau textile tresse pour le renforcement d'articles stratifies
EP0193478A1 (de) * 1985-02-22 1986-09-03 ETABLISSEMENTS LES FILS D'Auguste CHOMARAT et Cie Société anonyme Textile Armierung zur Herstellung von Schichtstoffen
EP0321228A2 (de) * 1987-12-14 1989-06-21 PLAS/STEEL PRODUCTS, INC. (an Indiana corporation) Stützverbindungsglied aus faserverstärktem Kunststoff
EP0327085A1 (de) * 1988-02-02 1989-08-09 E.I. Du Pont De Nemours And Company Direkte Fixierung von geflochtenen Strukturen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2753993A1 (fr) * 1996-10-01 1998-04-03 Aerospatiale Structure tubulaire tressee pour piece composite, sa realisation et ses applications
EP0839941A1 (de) * 1996-10-01 1998-05-06 Aerospatiale Societe Nationale Industrielle Schlauchförmige Flechtstruktur für Verbundbauteil, deren Herstellung und Anwendungen
US6495227B1 (en) 1996-10-01 2002-12-17 Aerospatiale Societe Nationale Industrielle Braided tubular Structure for a composite part its construction and its applications

Also Published As

Publication number Publication date
FR2679931A1 (fr) 1993-02-05
FR2679931B1 (fr) 1994-12-23
ATE152192T1 (de) 1997-05-15
ES2101067T3 (es) 1997-07-01
DE69219237D1 (de) 1997-05-28
DE69219237T2 (de) 1997-08-07
EP0527092B1 (de) 1997-04-23

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