EP0488873B1 - Herstellungsverfahren für Saiten, die für Zugbeanspruchung bestimmt sind, insbesondere für Saiten für Tennisschläger und Musikinstrumente und auf diese Weise erzielte Saiten - Google Patents

Herstellungsverfahren für Saiten, die für Zugbeanspruchung bestimmt sind, insbesondere für Saiten für Tennisschläger und Musikinstrumente und auf diese Weise erzielte Saiten Download PDF

Info

Publication number
EP0488873B1
EP0488873B1 EP91403179A EP91403179A EP0488873B1 EP 0488873 B1 EP0488873 B1 EP 0488873B1 EP 91403179 A EP91403179 A EP 91403179A EP 91403179 A EP91403179 A EP 91403179A EP 0488873 B1 EP0488873 B1 EP 0488873B1
Authority
EP
European Patent Office
Prior art keywords
process according
thread
strings
sheath
fibres
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.)
Expired - Lifetime
Application number
EP91403179A
Other languages
English (en)
French (fr)
Other versions
EP0488873A1 (de
Inventor
Michel Maurice Najotte
Michel Olivier Guyot
Guy Jean Delcroix
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.)
Guyot Michel
Regnault Reynolds SA
Original Assignee
Guyot Michel
Regnault Reynolds 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 Guyot Michel, Regnault Reynolds SA filed Critical Guyot Michel
Publication of EP0488873A1 publication Critical patent/EP0488873A1/de
Application granted granted Critical
Publication of EP0488873B1 publication Critical patent/EP0488873B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10D—STRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR
    • G10D3/00—Details of, or accessories for, stringed musical instruments, e.g. slide-bars
    • G10D3/10—Strings
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/40—Yarns in which fibres are united by adhesives; Impregnated yarns or threads
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • D02G3/444—Yarns or threads for use in sports applications

Definitions

  • the present invention relates to a method of manufacturing strings intended to be subjected to traction, in particular strings for rackets and musical instruments, comprising a step in which a thread is made from fibers, a step in which the thread is impregnated with a resin, a step in which the impregnated wire is coated with a synthetic material to provide it with a sheath, a step in which the synthetic material is completely cross-linked, and a step in which the thickness of the sheath is adjusted , this process being known from document FR-A-2 356 762.
  • the strings obtained by the implementation of the above method comprise a central wire made up of continuous fibers. When mounted on rackets, these strings then tend to vibrate under the impacts of the balls and transmit their vibrations to the players' arms. However, these vibrations risk generating anatomical lesions called "tennis elbow" having damaging consequences both on the game and on the player's health.
  • FR-A-2 356 762 describes a method of manufacturing cords, consisting of forming at least one bundle of continuous multifilaments, impregnating the bundle with a thermosetting adhesive, prepolymerizing the impregnation product, twisting the bundle avoiding squeezing the impregnated multifilaments and completing the polymerization of the impregnation product.
  • the present invention more particularly proposes to remedy the drawbacks of current ropes which are intended to be subjected to pull-ups, and to do this it relates to a method of the type comprising the steps mentioned above, which is characterized in that to make the thread, we use staple fibers which are subjected to textile operations of intersecting and stretching-twisting, the intersecting having the aim of orienting the fibers parallel to each other, while the stretching-twisting makes it possible to obtain a continuous thread .
  • Staple fibers make it possible to obtain a rope capable of limiting and damping the vibrations exerted on it more quickly when it is subjected to traction. By mounting this rope on a racket, we can avoid that the vibrations due to the impacts of the balls are transmitted to the player's arm and affect the performance of the latter.
  • the staple fibers have a length of the order of 20 to 500 mm, preferably 50 to 250 mm, size of the order of 1 to 100 dtex , preferably of the order of 1 to 20 dtex and have a crimp of the order of 4 to 12 per centimeter.
  • staple fibers made of at least one material chosen from the group comprising natural textile fibers, carbon, glass, metalloids, metals, metal alloys, polyesters, polyethers, polyurethanes, polyamides, polyolefins, acrylic compounds, vinyl compounds and aramides.
  • the staple fibers can be solid or hollow and have any cross-section, their cross-section possibly for example being round, elliptical, triangular, square, rectangular or with several lobes.
  • the steps of intersecting and stretch-twisting should be carried out before the impregnation step which can be carried out by immersing the wire in a tank containing the resin to be liquid state.
  • the crosslinking carried out under tension makes it possible to obtain a good bond between the resin and the fibers and consequently a cord having a better tensile strength.
  • the impregnation resin and the synthetic material constituting the sheath may be of the same nature and consist of a material chosen from the group comprising polyesters, polyethers, polyamides, epoxides, polyurethanes, cyanoacrylates , acrylic compounds, vinyl compounds and phenolic compounds, these various materials can be combined with solvents and optionally with dyes.
  • this polishing can for example be carried out by passing the wire between flexible abrasive discs.
  • the impregnation resin can be crosslinked by heating the wire in an oven whose temperature is adjusted to prevent deterioration of the staple fibers.
  • the impregnated wire is circulated in the oven so that it remains in the latter for a period of the order of 10 seconds to 10 minutes, preferably 30 seconds. 3 minutes.
  • the thickness of the sheath can be of the order of 0.05 to 0.5 mm.
  • strings obtained by the implementation of the method described above are intended to be used in applications in which they are likely to undergo pulling, such as for example on rackets or musical instruments.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Ropes Or Cables (AREA)
  • Reinforced Plastic Materials (AREA)
  • Fishing Rods (AREA)
  • Moulding By Coating Moulds (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Claims (14)

  1. Herstellungsverfahren für Saiten, die für Zugbeanspruchung bestimmt sind, insbesondere für Saiten für Tennisschläger und Musikinstrumente, das einen Schritt umfaßt, bei dem ein Garn aus Fasern hergestellt wird, einen Schritt, bei dem das Garn mit einem Harz imprägniert wird, einen Schritt, bei dem das imprägnierte Garn mit Kunststoff überzogen wird, damit es mit einer Hülle versehen ist, einen Schritt, bei dem der Kunststoff völlig vernetzt wird, und einen Schritt, bei dem die Dicke der Hülle eingestellt wird, dadurch gekennzeichnet, daß zur Herstellung des Garns Spinnfasern verwendet werden, die den textilen Arbeiten Intersecting und Strecken-Verdrehen unterzogen werden.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Spinnfasern etwa 20 bis 500 mm, vorzugsweise 50 bis 250 mm lang sind.
  3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Spinnfasern eine Feinheitsnummer von etwa 1 bis 100 dtex, vorzugsweise 1 bis 20 dtex aufweisen.
  4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Spinnfasern eine Kräuselung von etwa 4 bis 12 pro Zentimeter aufweisen.
  5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Spinnfasern aus mindestens einem Material aus der Gruppe von natürlichen Textilfasern, Kohlenstoff, Glas, Metalloiden, Metallen, Metall-Legierungen, Polyester, Polyether, Polyurethan, Polyamid, Polyolefin, Acryl- und Vinylverbindungen und Aramid erzeugt werden.
  6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Schritte Intersecting und Strecken-Verdrehen vor dem Schritt Imprägnierung ausgeführt werden.
  7. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Imprägnierungsharz vor dem Überziehen des Garns völlig vernetzt wird, wobei die Vernetzung durchgeführt wird, während das Garn unter Spannung gesetzt ist.
  8. Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Imprägnierungsharz und der Kunststoff gleicher Art sind.
  9. Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß der Imprägnierungsharz und der Kunststoff, der die Hülle bildet, aus einem Material aus der Gruppe der Polyester, Polyether, Polyamid, Epoxydharz, Polyurethan, Cyanacrylat, Acryl-, Vinyl- und Phenolverbindungen erzeugt werden, wobei diese verschiedenen Materialien mit Lösungsmitteln und evtl. mit Färbemitteln kombiniert werden können.
  10. Verfahren nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß das imprägnierte Garn vor dem Überziehen mit dem Kunststoff geglättet wird.
  11. Verfahren nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß der Imprägnierungsharz vernetzt wird, indem das Garn in einem Ofen erwärmt wird, dessen Temperatur zur Vermeidung eines Schrumpfens der Spinnfasern eingestellt ist.
  12. Verfahren nach Anspruch 11, dadurch gekennzeichnet, daß das imprägnierte Garn derart durch den Ofen geführt wird, daß seine Verweilzeit in diesem etwa 10 Sekunden bis 10 Minuten, vorzugsweise 30 Sekunden bis 3 Minuten beträgt.
  13. Verfahren nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß die Dicke der Hülle eingestellt wird, indem das überzogene Garn durch eine Reihe von Düsen abnehmenden Durchmessers durchgeführt wird.
  14. Verfahren nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß die Hülle etwa 0,05 bis 0,5 mm dick ist.
EP91403179A 1990-11-26 1991-11-25 Herstellungsverfahren für Saiten, die für Zugbeanspruchung bestimmt sind, insbesondere für Saiten für Tennisschläger und Musikinstrumente und auf diese Weise erzielte Saiten Expired - Lifetime EP0488873B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9014754 1990-11-26
FR909014754A FR2669647B1 (fr) 1990-11-26 1990-11-26 Procede de fabrication de cordes destinees a etre soumises a des tractions, notamment de cordes pour raquettes et instruments de musique, et cordes ainsi obtenues.

Publications (2)

Publication Number Publication Date
EP0488873A1 EP0488873A1 (de) 1992-06-03
EP0488873B1 true EP0488873B1 (de) 1995-08-23

Family

ID=9402598

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91403179A Expired - Lifetime EP0488873B1 (de) 1990-11-26 1991-11-25 Herstellungsverfahren für Saiten, die für Zugbeanspruchung bestimmt sind, insbesondere für Saiten für Tennisschläger und Musikinstrumente und auf diese Weise erzielte Saiten

Country Status (6)

Country Link
US (1) US5376412A (de)
EP (1) EP0488873B1 (de)
JP (1) JPH04300334A (de)
AT (1) ATE126839T1 (de)
DE (1) DE69112359D1 (de)
FR (1) FR2669647B1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5514417A (en) * 1994-08-04 1996-05-07 Schuller International, Inc. Method of and apparatus for coating a molded fibrous workpiece
US5883319A (en) * 1995-11-22 1999-03-16 W.L. Gore & Associates, Inc. Strings for musical instruments
FR2772395B1 (fr) * 1997-12-17 2000-02-25 Cousin Biotech Procede de fabrication d'une corde de tennis et corde obtenue selon ce procede
FR2839001A1 (fr) * 2002-04-25 2003-10-31 Joel Patrick Jean Luc Breard Procede de fabrication d'un nouveau materiau compose de faisceaux de fibres naturelles pre impregnes de resine organique et se presentant sous forme de fil ou de ruban
DE102011057150B4 (de) * 2011-12-29 2024-03-07 Saati Deutschland Gmbh Faden und Gewebe für Insektenschutzgitter, Insektenschutzgitter sowie Verfahren zum Herstellen von Geweben für Insektenschutzgitter
KR101513780B1 (ko) * 2012-05-21 2015-04-22 (주)엘지하우시스 보푸라기 방지용 원사 및 이를 이용한 우븐 바닥장식재

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US2627103A (en) * 1947-12-06 1953-02-03 Dan River Mills Inc Method of treating yarn, thread, and the like
US2863787A (en) * 1953-12-09 1958-12-09 Wm Ayrton & Co Ltd Fa Sizing and polishing of yarns
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US3738096A (en) * 1970-11-09 1973-06-12 Ashaway Line & Twine Mfg Manufacture and construction of strings
US3924028A (en) * 1971-08-12 1975-12-02 Owens Corning Fiberglass Corp Method for impregnating and coating fibrous strands
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GB1491080A (en) * 1975-03-15 1977-11-09 B & W Loudspeakers Loudspeakers
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FR2356762A1 (fr) * 1976-06-29 1978-01-27 Robin Jacques Cordes en fibres synthetiques et leur procede de fabrication
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JPH03269187A (ja) * 1990-03-13 1991-11-29 Kuraray Co Ltd 被覆ロープ

Also Published As

Publication number Publication date
DE69112359D1 (de) 1995-09-28
EP0488873A1 (de) 1992-06-03
JPH04300334A (ja) 1992-10-23
US5376412A (en) 1994-12-27
ATE126839T1 (de) 1995-09-15
FR2669647B1 (fr) 1994-10-14
FR2669647A1 (fr) 1992-05-29

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