EP0516560A1 - Textilarmierung für die Herstellung von Schichtstrukturen und Verfahren zu deren Herstellung - Google Patents

Textilarmierung für die Herstellung von Schichtstrukturen und Verfahren zu deren Herstellung Download PDF

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Publication number
EP0516560A1
EP0516560A1 EP92420164A EP92420164A EP0516560A1 EP 0516560 A1 EP0516560 A1 EP 0516560A1 EP 92420164 A EP92420164 A EP 92420164A EP 92420164 A EP92420164 A EP 92420164A EP 0516560 A1 EP0516560 A1 EP 0516560A1
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EP
European Patent Office
Prior art keywords
series
wires
son
unidirectional
braid
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Withdrawn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
EP92420164A
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English (en)
French (fr)
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
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 Fils dAuguste Chomarat et Cie SA filed Critical Fils dAuguste Chomarat et Cie SA
Publication of EP0516560A1 publication Critical patent/EP0516560A1/de
Withdrawn legal-status Critical Current

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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
    • D04C1/06—Braid or lace serving particular purposes
    • 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
    • D10B2401/00—Physical properties
    • D10B2401/04—Heat-responsive characteristics
    • D10B2401/041—Heat-responsive characteristics thermoplastic; thermosetting
    • 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
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/02—Cross-sectional features
    • D10B2403/024—Fabric incorporating additional compounds
    • D10B2403/0243—Fabric incorporating additional compounds enhancing functional properties
    • 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 intertwined threads are generally designated by the expression "bidirectional braids", an expression which will be adopted in the following description.
  • 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.
  • reinforcement structures are suitable for the production of cylindrical elements (tubes, masts of windsurfers, tennis rackets, etc.), on the other hand, they are not suitable when it is desired to produce laminated materials of small thickness, 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 by continuously incorporating a textile reinforcement, which implies a significant tensioning and therefore requires non-deformable reinforcements.
  • the textile reinforcement according to the invention is in the form of a flat strip of very great length relative to its width, and comprising at least three series of threads oriented differently with respect to each other , two being arranged at an angle, in opposite directions to one another, with respect to the length of the strip, and the wires of the third being, for their part, arranged parallel to the length, and it is characterized in that the threads arranged at an angle consist of a flattened tubular braid which surrounds and covers a sheet of determined width, comprising at least one series of threads arranged longitudinally and whose maintenance is ensured by a hot-melt material having iron-on properties also ensuring the connection of the bidirectional external layers with the unidirectional internal structure.
  • such a structure makes it possible to produce materials which can either be composed of yarns of the same nature (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 unidirectional ply.
  • 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 introduce, simultaneously with the formation of the braid, inside the latter, a strip previously formed and comprising at least one series of longitudinal, parallel wires, held together by means of a hot-melt material having iron-on properties, then exerting traction on the braid in order to flatten it so that it comes to press against the two sides of the sheet of longitudinal threads, without compressing them transversely and, after flattening, to reveal the heat-bonding properties of the bonding material of the unidirectional sheet, in order to bond the different layers of the complex together.
  • the textile reinforcement according to the invention is in the form of a flat strip, designated by the general reference (1) , very long (L) compared to its width (1). It comprises at least 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). In the material according to the invention, the wires (1a, 1b) arranged at an angle are formed by a flattened tubular braid which surrounds and covers the longitudinal wires (2).
  • the longitudinal wires (2) are held in place by means of a hot-melt material, for example by means of fine weft bonding wires (3), based on a copolyamide, the melting zone of which is between 70 and 150 ° C.
  • a hot-melt material for example by means of fine weft bonding wires (3), based on a copolyamide, the melting zone of which is between 70 and 150 ° C.
  • Such a unidirectional internal ply can, for example, be produced in accordance with the teachings of the patent European 193,478 and will therefore not be described in detail in the following description for the sake of simplification.
  • the unidirectional internal ply consisting of the threads (2) is also bonded, revealing the properties of the hot-melt material for bonding the longitudinal threads with the bidirectional outer layers.
  • Such a complex structure is obtained on a conventional braiding machine, making it possible to produce the tubular braid comprising the wires arranged at an angle (1a, 1b).
  • a strip of unidirectional wires previously formed is introduced, for example in accordance with the teachings of the aforementioned European patent 193,478.
  • the tubular braid is subjected to a pressure so that it is flattened and that it comes to press against the two external faces of the sheet of longitudinal wires (2), without compressing the latter transversely. After laying flat, the fusible properties of the bonding material of the unidirectional sheet are reactivated, which makes it possible to bond different layers of the complex together.
  • the material according to the invention is produced on a conventional braiding machine, of the "Spiraltex" type, comprising ninety-six (96) spindles and therefore making it possible to produce a bidirectional braid having two plies oriented in opposite directions and each consisting of forty-eight (48) threads.
  • the layers consist of an alternation of two glass wires having a titer of 68 tex x 2 for a carbon thread having a titer of 400 tex
  • the wires (1a, 1b) consist of an alternation of five glass wicks having a titer of 68 tex x 2 for a carbon wick having a titer of 400 tex.
  • the unidirectional layers are produced in accordance with the teachings of the aforementioned European patent 193,478.
  • the unidirectional sheet illustrated in FIG. 1 is constituted by an alternation of a glass wick having a titer of 600 tex for a carbon wick having a titer of 400 tex, said wicks being held parallel to each other by weft threads , thin, made up of threads of the "core / sheath" type, the core being based on a 22 tex glass thread and the sheath formed by a copolyamide-based coating, the melting point of which is about 115 ° C.
  • the unidirectional sheet of the example illustrated in FIG. 2 is, in turn, only made up of wicks of glass threads linked together as in the previous case, by weft threads similar to those of the example illustrated in Figure 1 and the peripheral sheath is in a hot melt material.
  • the unidirectional strip (2) illustrated in Figure 1 has a width of five centimeters and that illustrated in Figure 2 six centimeters.
  • the complexes thus produced can be used in numerous applications, such as for example as reinforcements of profiles obtained by pultrusion.
EP92420164A 1991-05-30 1992-05-20 Textilarmierung für die Herstellung von Schichtstrukturen und Verfahren zu deren Herstellung Withdrawn EP0516560A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9106689 1991-05-30
FR9106689A FR2677047A1 (fr) 1991-05-30 1991-05-30 Armature textile utilisable pour la realisation de complexes stratifies et procede pour son obtention.

Publications (1)

Publication Number Publication Date
EP0516560A1 true EP0516560A1 (de) 1992-12-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP92420164A Withdrawn EP0516560A1 (de) 1991-05-30 1992-05-20 Textilarmierung für die Herstellung von Schichtstrukturen und Verfahren zu deren Herstellung

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EP (1) EP0516560A1 (de)
FR (1) FR2677047A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104831470A (zh) * 2013-12-20 2015-08-12 苹果公司 利用编织纤维增加抗张强度并用于固定附连机制
CN108221169A (zh) * 2017-12-26 2018-06-29 宜兴市天宇世纪高新科技有限公司 一种多线式碳纤维布的编织方法
CN109715873A (zh) * 2016-07-08 2019-05-03 科纺勒纺织工业公司 适用于热塑性树脂浸渍方法的织物增强件
US10398042B2 (en) 2010-05-26 2019-08-27 Apple Inc. Electronic device with an increased flexural rigidity
US10864686B2 (en) 2017-09-25 2020-12-15 Apple Inc. Continuous carbon fiber winding for thin structural ribs

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2739674B1 (fr) * 1995-10-04 1997-12-05 Coflexip Ruban plat notamment pour renforcer des conduites, son procede de fabrication, et conduites renforcees par de tels rubans

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
FR2379376A1 (fr) * 1977-02-02 1978-09-01 Tech Verre Tisse Nouveau materiau pour le renforcement d'articles stratifies
FR2462266A1 (fr) * 1979-07-26 1981-02-13 Tech Verre Tisse Nouveau materiau pour le renforcement d'articles stratifies, son procede de fabrication, dispositif pour la mise en oeuvre de ce procede et articles stratifies obtenus
EP0033244A2 (de) * 1980-01-23 1981-08-05 Henry Roy Smith Faserverstärkte Materialien und Verfahren zu ihrer Herstellung und Verwendung
EP0193478A1 (de) * 1985-02-22 1986-09-03 ETABLISSEMENTS LES FILS D'Auguste CHOMARAT et Cie Société anonyme Textile Armierung zur Herstellung von Schichtstoffen
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
FR2379376A1 (fr) * 1977-02-02 1978-09-01 Tech Verre Tisse Nouveau materiau pour le renforcement d'articles stratifies
FR2462266A1 (fr) * 1979-07-26 1981-02-13 Tech Verre Tisse Nouveau materiau pour le renforcement d'articles stratifies, son procede de fabrication, dispositif pour la mise en oeuvre de ce procede et articles stratifies obtenus
EP0033244A2 (de) * 1980-01-23 1981-08-05 Henry Roy Smith Faserverstärkte Materialien und Verfahren zu ihrer Herstellung und Verwendung
EP0193478A1 (de) * 1985-02-22 1986-09-03 ETABLISSEMENTS LES FILS D'Auguste CHOMARAT et Cie Société anonyme Textile Armierung zur Herstellung von Schichtstoffen
EP0327085A1 (de) * 1988-02-02 1989-08-09 E.I. Du Pont De Nemours And Company Direkte Fixierung von geflochtenen Strukturen

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10398042B2 (en) 2010-05-26 2019-08-27 Apple Inc. Electronic device with an increased flexural rigidity
CN104831470A (zh) * 2013-12-20 2015-08-12 苹果公司 利用编织纤维增加抗张强度并用于固定附连机制
US11518138B2 (en) 2013-12-20 2022-12-06 Apple Inc. Using woven fibers to increase tensile strength and for securing attachment mechanisms
CN109715873A (zh) * 2016-07-08 2019-05-03 科纺勒纺织工业公司 适用于热塑性树脂浸渍方法的织物增强件
US10864686B2 (en) 2017-09-25 2020-12-15 Apple Inc. Continuous carbon fiber winding for thin structural ribs
CN108221169A (zh) * 2017-12-26 2018-06-29 宜兴市天宇世纪高新科技有限公司 一种多线式碳纤维布的编织方法

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Publication number Publication date
FR2677047A1 (fr) 1992-12-04

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