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EP0488873B1 - Fabrication process for cords intended for tensile load, particularly for strings of tennis rackets and musical instruments, and strings thus obtained - Google Patents

Fabrication process for cords intended for tensile load, particularly for strings of tennis rackets and musical instruments, and strings thus obtained 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
German (de)
French (fr)
Other versions
EP0488873A1 (en
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/en
Application granted granted Critical
Publication of EP0488873B1 publication Critical patent/EP0488873B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10DSTRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR
    • G10D3/00Details of, or accessories for, stringed musical instruments, e.g. slide-bars
    • G10D3/10Strings
    • DTEXTILES; PAPER
    • D02YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02GCRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/40Yarns in which fibres are united by adhesives; Impregnated yarns or threads
    • DTEXTILES; PAPER
    • D02YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02GCRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/44Yarns or threads characterised by the purpose for which they are designed
    • D02G3/444Yarns 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)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Ropes Or Cables (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Fishing Rods (AREA)
  • Moulding By Coating Moulds (AREA)
  • Reinforced Plastic Materials (AREA)

Abstract

The process for the manufacture of strings according to the invention is of the type comprising a stage in which a string is produced from fibres, a stage in which the string is impregnated with a resin,a stage in which the impregnated string is coated with a synthetic material to provide it with a sheath, a stage in which the synthetic material is crosslinked completely, and a stage in which the thickness of the sheath is adjusted. It is characterised in that, to produce the string, noncontinuous fibres are employed, which are subjected to textile intersecting and drawing-twisting operations. The process according to the invention makes it possible to produce strings intended to be subjected to tractions, especially strings for rackets and musical instruments.

Description

La présente invention concerne un procédé de fabrication de cordes destinées à être soumises à des tractions, notamment de cordes pour raquettes et instruments de musique, comprenant une étape dans laquelle on réalise un fil à partir de fibres, une étape dans laquelle on imprègne le fil avec une résine, une étape dans laquelle on enduit le fil imprégné avec une matière synthétique pour le munir d'une gaine, une étape dans laquelle on fait réticuler complètement la matière synthétique, et une étape dans laquelle on ajuste l'épaisseur de la gaine, ce procédé étant connu d'après le document FR-A-2 356 762.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.

Les cordes obtenues par la mise en oeuvre du procédé ci-dessus comportent un fil central constitué de fibres continues. Lorsqu'elles sont montées sur des raquettes, ces cordes ont alors tendance à vibrer sous les impacts des balles et à transmettre leurs vibrations jusqu'au bras des joueurs. Or ces vibrations risquent d'engendrer des lésions anatomiques dites "tennis elbow" ayant des conséquences dommageables tant sur le jeu que sur la santé du joueur.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 décrit un procédé de fabrication de cordes, consistant à former au moins un faisceau de multifilaments continus, à imprégner le faisceau avec un adhésif thermodurcissable, à prépolymériser le produit d'imprégnation, à retordre le faisceau en évitant l'essorage des multifilaments imprégnés et à achever la polymérisation du produit d'imprégnation.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.

Lorsqu'elles sont montées sur des raquettes de tennis, les cordes réalisées suivant ce procédé n'assurent toutefois qu'un certain amortissement des vibrations.When they are mounted on tennis rackets, the strings produced according to this process, however, only provide a certain damping of the vibrations.

La présente invention se propose plus particulièrement de remédier aux inconvénients des cordes actuelles qui sont destinées à être soumises à des tractions, et pour ce faire elle a pour objet un procédé du type comportant les étapes mentionnées ci-dessus, qui est caractérisé en ce que pour réaliser le fil, on utilise des fibres discontinues que l'on soumet à des opérations textiles d'intersecting et d'étirage-tordage, l'intersecting ayant pour but d'orienter les fibres parallèlement les unes aux autres, tandis que l'étirage-tordage permet d'obtenir un fil continu.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 .

Les fibres discontinues permettent d'obtenir une corde capable de limiter et d'amortir plus rapidement les vibrations s'exerçant sur elle lorsqu'elle est soumise à des tractions. En montant cette corde sur une raquette, on peut donc éviter que les vibrations dues aux impacts des balles soient transmises au bras du joueur et affectent les performances de ce dernier.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.

Pour obtenir une corde présentant un excellent pouvoir d'amortissement, il est souhaitable que les fibres discontinues aient une longueur de l'ordre de 20 à 500 mm, de préférence de 50 à 250 mm, titrent de l'ordre de 1 à 100 dtex, de préférence de l'ordre 1 à 20 dtex et présentent une frisure de l'ordre de 4 à 12 par centimètre.To obtain a rope with excellent damping power, it is desirable that 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.

Il est par ailleurs avantageux d'utiliser des fibres discontinues réalisées en au moins un matériau choisi dans le groupe comprenant les fibres textiles naturelles, le carbone, le verre, les métalloïdes, les métaux, les alliages métalliques, les polyesters, les polyéthers, les polyuréthanes, les polyamides, les polyoléfines, les composés acryliques, les composés vinyliques et les aramides.It is also advantageous to use 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.

On précisera ici que les fibres discontinues peuvent être pleines ou creuses et avoir une section quelconque, leur section pouvant par exemple être ronde, elliptique, triangulaire, carrée, rectangulaire ou à plusieurs lobes.It will be specified here that 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.

Lors de la mise en oeuvre du procédé selon l'invention, il convient de réaliser les étapes d'intersecting et d'étirage-tordage avant l'étape d'imprégnation qui peut être réalisée en immergeant le fil dans un bac contenant la résine à l'état liquide.During the implementation of the method according to the invention, 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.

Il est par ailleurs souhaitable de faire réticuler complètement la résine d'imprégnation avant d'enduire le fil, la réticulation étant réalisée alors que le fil est mis en tension.It is also desirable to completely crosslink the impregnation resin before coating the wire, the crosslinking being carried out while the wire is under tension.

La réticulation réalisée sous tension permet d'obtenir une bonne liaison entre la résine et les fibres et par suite une corde présentant une meilleure résistance à la traction.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.

Conformément à l'invention, la résine d'imprégnation et la matière synthétique constituant la gaine peuvent être de même nature et consister en un matériau choisi dans le groupe comprenant les polyesters, les polyéthers, les polyamides, les époxydes, les polyuréthanes, les cyanoacrylates, les composés acryliques, les composés vinyliques et les composés phénoliques, ces différents matériaux pouvant être associés à des solvants et éventuellement à des colorants.According to the invention, 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.

Selon une autre caractéristique du procédé conforme à l'invention, on peut avantageusement polir le fil imprégné avant de l'enduire avec la matière synthétique, ce polissage pouvant par exemple être réalisé en faisant passer le fil entre des disques abrasifs souples.According to another characteristic of the process in accordance with the invention, it is advantageous to polish the impregnated wire before coating it with the synthetic material, this polishing can for example be carried out by passing the wire between flexible abrasive discs.

Selon encore une autre caractéristique du procédé conforme à l'invention, on peut faire réticuler la résine d'imprégnation en chauffant le fil dans un four dont la température est réglée pour éviter une détérioration des fibres discontinues.According to yet another characteristic of the process according to the invention, the impregnation resin can be crosslinked by heating the wire in an oven whose temperature is adjusted to prevent deterioration of the staple fibers.

A titre d'exemple, on précisera que l'on fait circuler le fil imprégné dans le four de façon à ce qu'il séjourne dans ce dernier pendant une durée de l'ordre de 10 secondes à 10 minutes, de préférence de 30 secondes à 3 minutes.By way of example, it will be specified that 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.

Pour obtenir une corde de diamètre constant, on peut avantageusement ajuster l'épaisseur de la gaine en faisant passer le fil enduit dans une série de filières de diamètres décroissants. A l'issue de cette opération de calibrage, l'épaisseur de la gaine peut être de l'ordre de 0,05 à 0,5 mm.To obtain a cord of constant diameter, it is advantageous to adjust the thickness of the sheath by passing the coated wire through a series of dies of decreasing diameters. At the end of this calibration operation, the thickness of the sheath can be of the order of 0.05 to 0.5 mm.

Les cordes obtenues par la mise en oeuvre du procédé décrit ci-dessus sont destinées à être utilisées dans des applications dans lesquelles elles sont susceptibles de subir des tractions, comme par exemple sur des raquettes ou des instruments de musique.The 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.

Claims (14)

  1. A process for manufacturing strings to be subjected to tensile stress, in particular strings for rackets and musical instruments, including a step in which a thread is produced from fibres, a step in which the thread is impregnated with a resin, a step in which the impregnated thread is coated with a synthetic material to provide it with a sheath, a step in which the synthetic material is caused to be completely cross-linked, and a step in which the thickness of the sheath is adjusted, characterized in that for producing the thread discontinuous fibres are used which are subjected to textile operations of intersecting and drawing-twisting.
  2. The process according to claim 1, characterized in that the discontinuous fibres have a length in the order of 20 to 500 mm, and preferably of 50 to 250 mm.
  3. The process according to claim 1 or 2, characterized in that the discontinuous fibres have a number in the order of 1 to 100 dtex, and preferably of 1 to 20 dtex.
  4. The process according to any of claims 1 to 3, characterized in that the discontinuous fibres have 4 to 12 curls per centimeter.
  5. The process according to any of claims 1 to 4, characterized in that the discontinuous fibres are made of at least one material chosen from the group comprising natural textile fibres, carbon, glass, metalloids, metals, metallic alloys, polyesters, polyethers, polyurethanes, polyamides, polyolefins, acrylic compounds, vinyl compounds and aramids.
  6. The process according to any of claims 1 to 5, characterized in that the intersecting and drawing-twisting steps are carried out prior to the impregnation step.
  7. The process according to any of claims 1 to 6, characterized in that the impregnating resin is caused to be completely cross-linked prior to coating the thread, cross-linking being carried out while the thread is under tension.
  8. The process according to any of claims 1 to 7, characterized in that the impregnating resin and the synthetic material are of the same kind.
  9. The process according to any of claims 1 to 8, characterized in that the impregnating resin and the synthetic material forming the sheath are made of a material chosen from the group comprising polyesters, polyethers, polyamides, epoxides, polyurethanes, cyanoacrylates, acrylic compounds, vinyl compounds and phenolic compounds, it being possible to associate these different materials with solvents, and possibly with dyes.
  10. The process according to any of claims 1 to 9, characterized in that the impregnated thread is polished before it is coated with the synthetic material.
  11. The process according to any of claims 1 to 10, characterized in that the impregnating resin is caused to be cross-linked by heating the thread in an oven, the temperature of which is set so as to prevent shrinkage of the discontinuous fibres.
  12. The process according to claim 11, characterized in that the impregnated thread is passed through the oven so that it dwells therein for a duration in the order of 10 seconds to 10 minutes, and preferably of 30 seconds to 3 minutes.
  13. The process according to any of claims 1 to 12, characterized in that the thickness of the sheath is adjusted by causing the coated thread to pass through a series of dies of decreasing diameters.
  14. The process according to any of claims 1 to 13, characterized in that the sheath has a thickness in the order of 0.05 to 0.5 mm.
EP91403179A 1990-11-26 1991-11-25 Fabrication process for cords intended for tensile load, particularly for strings of tennis rackets and musical instruments, and strings thus obtained Expired - Lifetime EP0488873B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9014754 1990-11-26
FR909014754A FR2669647B1 (en) 1990-11-26 1990-11-26 METHOD OF MANUFACTURING STRINGS FOR SUBJECTING TO TRACTIONS, ESPECIALLY STRINGS FOR RACKETS AND MUSICAL INSTRUMENTS, AND STRINGS OBTAINED THEREBY.

Publications (2)

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

Family

ID=9402598

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91403179A Expired - Lifetime EP0488873B1 (en) 1990-11-26 1991-11-25 Fabrication process for cords intended for tensile load, particularly for strings of tennis rackets and musical instruments, and strings thus obtained

Country Status (6)

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

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 (en) * 1997-12-17 2000-02-25 Cousin Biotech METHOD FOR MANUFACTURING A TENNIS ROPE AND ROPE OBTAINED ACCORDING TO THIS METHOD
FR2839001A1 (en) * 2002-04-25 2003-10-31 Joel Patrick Jean Luc Breard PROCESS FOR THE MANUFACTURE OF A NEW MATERIAL COMPRISING BEAMS OF NATURAL FIBERS PRE-IMPREGNATED WITH ORGANIC RESIN AND IN THE FORM OF YARN OR RIBBON
DE102011057150B4 (en) * 2011-12-29 2024-03-07 Saati Deutschland Gmbh Thread and fabric for insect screens, insect screens and process for producing fabrics for insect screens
KR101513780B1 (en) * 2012-05-21 2015-04-22 (주)엘지하우시스 Yarn for preventing nap and woven decorative flooring using the same

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1890292A (en) * 1932-05-03 1932-12-06 E T Trotter & Co Method of applying coatings to insulated wires and the like
US2252755A (en) * 1939-05-13 1941-08-19 Elevator Supplies Co Inc Method of saturating fibrous coverings on wires, cables, and the like
US2627103A (en) * 1947-12-06 1953-02-03 Dan River Mills Inc Method of treating yarn, thread, and the like
DE1041905B (en) * 1953-12-09 1958-10-30 Wm Ayrton & Co Ltd Apparatus for polishing yarns
US2946181A (en) * 1958-01-03 1960-07-26 Const Mecaniques De Stains Soc Production of twistless yarns by direct spinning to tow, sizing the tow, false twisting and winding
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
US3920658A (en) * 1972-01-20 1975-11-18 Martin James Benson Coated tennis string and process for coating
US3745756A (en) * 1972-02-07 1973-07-17 Ashaway Line & Twine Mfg Construction of tennis strings
GB1491080A (en) * 1975-03-15 1977-11-09 B & W Loudspeakers Loudspeakers
US4043555A (en) * 1976-02-26 1977-08-23 Irradiated Strings, Inc. Racquet string and method
FR2356762A1 (en) * 1976-06-29 1978-01-27 Robin Jacques Musical instrument or sports racquet strings - formed from tows of multifilaments impregnated with thermosetting resin which is partially polymerised before twisting string
AT355448B (en) * 1977-09-23 1980-03-10 Swarovski Tyrolit Schleif METHOD FOR IMPREGNATING ARMORING FIBERS, ARMORING FABRICS, FLEECES OR THE LIKE.
US4202164A (en) * 1978-11-06 1980-05-13 Amsted Industries Incorporated Lubricated plastic impregnated aramid fiber rope
DE3167114D1 (en) * 1980-11-24 1984-12-13 Akzo Nv A sized multifilament yarn of an aromatic polyamide, a yarn package, a woven fabric and a process for making said yarn
FR2544347B3 (en) * 1983-04-14 1986-01-24 Cousin Freres Sa METHOD FOR MANUFACTURING A COMPOSITE ROPE
US4474585A (en) * 1983-05-31 1984-10-02 Norton Company Synthetic yarn-reinforced flexible webs stabilized against elongation, coated abrasive thereon, and process therefor
FR2579133B1 (en) * 1985-03-25 1987-09-25 Atochem FIBER REINFORCED THERMOPLASTIC POLYMER COMPOSITE MATERIAL, MANUFACTURING METHOD THEREOF
JP2516614Y2 (en) * 1986-07-24 1996-11-06 株式会社ブリヂストン Aromatic polyamide fiber cord for rubber reinforcement
FR2604193A1 (en) * 1986-09-19 1988-03-25 Paris Claude Composite yarn for knitting textile products, especially industrial gloves, process for the manufacture of such a composite yarn and products thus obtained
DE3734574A1 (en) * 1987-10-13 1989-04-27 Basf Ag FILLED SHAPE
US4954377A (en) * 1988-11-22 1990-09-04 The United States Of America As Represented By The Secretary Of The Navy Load bearing connective damper
JPH0333285A (en) * 1989-06-29 1991-02-13 Nippon Steel Corp Cable-like composite material and production thereof
JPH03269187A (en) * 1990-03-13 1991-11-29 Kuraray Co Ltd Coated rope

Also Published As

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

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