FR2711997A1 - Process for manufacturing a synthetic rope or halyard and products obtained using this process - Google Patents

Process for manufacturing a synthetic rope or halyard and products obtained using this process Download PDF

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Publication number
FR2711997A1
FR2711997A1 FR9313169A FR9313169A FR2711997A1 FR 2711997 A1 FR2711997 A1 FR 2711997A1 FR 9313169 A FR9313169 A FR 9313169A FR 9313169 A FR9313169 A FR 9313169A FR 2711997 A1 FR2711997 A1 FR 2711997A1
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FR
France
Prior art keywords
core
manufacturing
braid
rope
halyard
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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
FR9313169A
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French (fr)
Other versions
FR2711997B1 (en
Inventor
Delvael Yves
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.)
Cousin Freres SA
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Cousin Freres SA
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Filing date
Publication date
Application filed by Cousin Freres SA filed Critical Cousin Freres SA
Priority to FR9313169A priority Critical patent/FR2711997B1/en
Publication of FR2711997A1 publication Critical patent/FR2711997A1/en
Application granted granted Critical
Publication of FR2711997B1 publication Critical patent/FR2711997B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/02—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • D03C3/24—Features common to jacquards of different types
    • D03C3/40—Constructions of lifting-cords
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B5/00—Making ropes or cables from special materials or of particular form
    • D07B5/12—Making ropes or cables from special materials or of particular form of low twist or low tension by processes comprising setting or straightening treatments
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/02—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
    • D07B1/025—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics comprising high modulus, or high tenacity, polymer filaments or fibres, e.g. liquid-crystal polymers
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/16—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics
    • D07B1/162—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics characterised by a plastic or rubber enveloping sheathing
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2083—Jackets or coverings
    • D07B2201/2087—Jackets or coverings being of the coated type
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2083—Jackets or coverings
    • D07B2201/2088—Jackets or coverings having multiple layers
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2083—Jackets or coverings
    • D07B2201/209—Jackets or coverings comprising braided structures
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2083—Jackets or coverings
    • D07B2201/2092—Jackets or coverings characterised by the materials used
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2205/00—Rope or cable materials
    • D07B2205/20—Organic high polymers
    • D07B2205/2003—Thermoplastics
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2207/00—Rope or cable making machines
    • D07B2207/40—Machine components
    • D07B2207/404—Heat treating devices; Corresponding methods
    • D07B2207/4054—Heat treating devices; Corresponding methods to soften the load bearing material
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2401/00—Aspects related to the problem to be solved or advantage
    • D07B2401/20—Aspects related to the problem to be solved or advantage related to ropes or cables
    • D07B2401/205—Avoiding relative movement of components

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
  • Ropes Or Cables (AREA)

Abstract

- Process for manufacturing a rope comprising a core covered by at least one braid. - According to the invention, the melting point of the braid is lower than or equal to the melting point of the core, melting of the outer braid, in order to form a sheath, taking place at a controlled temperature and under a controlled tension. - Applications: small-sized and medium-sized ropes and halyards.

Description

PROCEDE DE FABRICATION D'UNE DRISSE OU CORDE SYNTHETIQUE ET
PRODUITS OBTENUS SELON CE PROCEDE.PROCESS FOR THE MANUFACTURE OF A SYNTHETIC STRAP AND
PRODUCTS OBTAINED ACCORDING TO THIS PROCESS.

La présente invention a pour objet un procédé de fabrication d'une corde ou drisse à partir de matériaux synthétiques.The present invention relates to a method of manufacturing a rope or halyard from synthetic materials.

Les drisses sont des cordes incluant une âme entourée par une tresse.The halyards are ropes including a soul surrounded by a braid.

On sait qu'il est connu de recouvrir les cordes ou câbles devant subir des abrasions ou des agressions physicochimiques telles que la corrosion, au cours du travail, d'une gaine ou couverture de protection. Une telle gaine est généralement constituée par un revêtement de matière plastique déposé autour du câble ou de la corde par extrusion.It is known that it is known to cover the cords or cables which are to be subjected to abrasion or physicochemical attack such as corrosion, during work, of a protective sheath or cover. Such a sheath is generally formed by a coating of plastic material deposited around the cable or the rope by extrusion.

L'extrusion permet d'obtenir des vitesses de revêtement élevées, la corde passant dans une tête d'équerre, passage autour duquel elle se recouvre de matière plastique en fusion, ce revêtement étant régularisé par une filière, avant refroidissement de la couverture. Malheureusement, il est très difficile d'obtenir une épaisseur constante des parois de la gaine en raison de la difficulté de centrage de la corde dont la géométrie (rondicité) est déformable à la moindre pression. Par suite, il n'est pas possible de réaliser des parois de faible épaisseur à cause du centrage nécessairement imparfait.The extrusion makes it possible to obtain high coating speeds, the cord passing through a square head, a passage around which it is covered with molten plastic, this coating being regularized by a die, before the cover cools. Unfortunately, it is very difficult to obtain a constant thickness of the walls of the sheath due to the difficulty of centering the rope whose geometry (roundness) is deformable at the slightest pressure. Consequently, it is not possible to produce thin walls because of the necessarily imperfect centering.

La présente invention a pour objet de pallier cet inconvénient. Elle est basée sur l'idée selon laquelle la matière, sous forme de fils, destinée à constituer la couverture, doit être régulièrement répartie autour de l'âme par des moyens en eux-mêmes connus tels que le tressage, le guipage, etc. pour que la gaine soit d'une épaisseur régulière. La solution réside en ce que la gaine est constituée par une fusion contrôlée d'une couche de textile thermoplastique extérieure régulière et laissant l'âme intacte.The object of the present invention is to overcome this drawback. It is based on the idea that the material, in the form of threads, intended to constitute the covering, must be regularly distributed around the core by means in themselves known such as braiding, covering, etc. so that the sheath is of regular thickness. The solution lies in that the sheath is constituted by a controlled fusion of a layer of regular outer thermoplastic textile and leaving the core intact.

Selon l'invention, le procédé de fabrication d'une corde comprenant une âme recouverte par une tresse est caractérisé en ce que le point de fusion de la tresse est inférieur ou égal au point de fusion de l'âme, la fusion de la gaine externe s'effectuant sous une température contrôlée.According to the invention, the method of manufacturing a rope comprising a core covered by a braid is characterized in that the melting point of the braid is less than or equal to the melting point of the core, the melting of the sheath external taking place under a controlled temperature.

Cette différence des températures de fusion est essentielle car elle permet de replastifier plus ou moins partiellement la couverture sur l'âme et de réaliser une intégration parfaite et homogène de la corde. La régularité du tressage ou du guipage permet de répartir d'une manière uniforme la matière de couverture sur toute la longueur de la corde, d'où la régularité de l'épaisseur obtenue.This difference in melting temperatures is essential because it makes it possible to more or less partially re-laminate the cover on the core and to achieve perfect and homogeneous integration of the cord. The regularity of the braiding or wrapping makes it possible to distribute the covering material uniformly over the entire length of the cord, hence the regularity of the thickness obtained.

Lors de l'utilisation de fils à haute ténacité en couverture, celle-ci participe notablement à la résistance en traction de la corde ce qui n'est pas le cas lorsque la corde est extrudée. L'âme peut être de structure et de composition quelconque par exemple constituée de fils parallèles, d'un ou plusieurs câblés, de fils parallèles recouverts d'une première tresse ou d'un guipage ou encore de fils moulinés, etc. En fondant progressivement, la couche extérieure va constituer une gaine d'épaisseur régulière autour de l'âme.When using high-tenacity yarns for covering, this contributes notably to the tensile strength of the rope, which is not the case when the rope is extruded. The core can be of any structure and composition, for example made up of parallel threads, one or more cords, parallel threads covered with a first braid or covering, or even stranded threads, etc. By gradually melting, the outer layer will constitute a sheath of regular thickness around the core.

L'augmentation de température nécessaire est obtenue, comme connu en soi, par un four horizontal de faible diamètre.The necessary temperature increase is obtained, as known per se, by a horizontal oven of small diameter.

Dans ces conditions, il n'existe dans le four qu'une faible quantité d'air et, par suite d'oxygène et l'on ne constate pas d'oxydation importante de la couverture fondue.Under these conditions, there is only a small amount of air in the oven and, as a result of oxygen, and there is no significant oxidation of the molten cover.

L'application d'une prétension ou d'une rétraction n'est pas absolument nécessaire, mais dans la mesure où la corde passe dans un four, il est judicieux d'utiliser l'augmentation de température pour réaliser une thermofixation permettant d'adapter les caractéristiques de la corde à l'usage auquel elle est destinée.The application of a pretension or a retraction is not absolutely necessary, but insofar as the rope passes through an oven, it is advisable to use the temperature increase to carry out a thermofixation making it possible to adapt the characteristics of the rope for the use for which it is intended.

Bien entendu, la structure de l'âme est également adaptée à l'usage qui est prévu. C'est ainsi que pour des câbles devant passer sur des poulies, on évitera les âmes à fils parallèles.Of course, the structure of the core is also adapted to the use which is intended. Thus, for cables having to pass over pulleys, the cores with parallel wires will be avoided.

D'autres caractéristiques et avantages de l'invention apparaîtront au cours de la description qui va suivre de modes particuliers de réalisation, donnés uniquement à titre d'exemples non limitatifs, en regard des dessins qui représentent
- La Figure 1 une vue, partiellement arrachée d'une corde
ou drisse selon l'invention;
- La Figure 2, une vue schématique d'un dispositif de mise
en oeuvre du procédé.Other characteristics and advantages of the invention will appear during the following description of particular embodiments, given only by way of nonlimiting examples, with reference to the drawings which represent
- Figure 1 a view, partially cut away from a rope
or halyard according to the invention;
- Figure 2, a schematic view of a setting device
of the process.

La figure 1 représente l'extrémité d'une corde obtenue par le procédé selon l'invention. Elle comporte une âme 1 qui, dans l'exemple représenté, est constituée de fils multifilaments 2 parallèles en polyamide 6.6.par exemple.Figure 1 shows the end of a rope obtained by the method according to the invention. It comprises a core 1 which, in the example shown, consists of parallel multifilament yarns 2 made of polyamide 6.6. For example.

(Mais elle peut également être moulinée, câblée guipée ou tressée). L'âme 1 est recouverte d'une tresse 2 par exemple en polyamide 6.6 tressée à pas long. L'ensemble âme+tresse est recouvert par une couverture 3 en polyamide 6 qui, initialement est une tresse dont le nombre de fuseaux est généralement compris entre 12 et 16 dont l'épaisseur peut être ajustée à la valeur voulue en agissant sur le titre du fil. Sur la figure 1, la couverture 3, initialement tressée a fondu pour se répartir selon une épaisseur uniforme sur toute la surface de la corde.(But it can also be milled, cabled gimped or braided). The core 1 is covered with a braid 2, for example made of braided polyamide 6.6 with a long pitch. The core + braid assembly is covered by a cover 3 of polyamide 6 which, initially is a braid, the number of spindles of which is generally between 12 and 16, the thickness of which can be adjusted to the desired value by acting on the title of the wire. In FIG. 1, the cover 3, initially braided, has melted to be distributed in a uniform thickness over the entire surface of the rope.

Dans le cas précédent, la température de fusion du polyamide constituant l'âme est sensiblement de 255-2600C alors que la couverture en polyamide 6 fond à 2150C. Dans ces conditions, le four est porté à une température de l'ordre de 2700C en fonction de la vitesse de passage.In the previous case, the melting temperature of the polyamide constituting the core is approximately 255-2600C while the polyamide 6 cover melts at 2150C. Under these conditions, the oven is brought to a temperature of the order of 2700C depending on the speed of passage.

Le processus de fabrication est le suivant: après formation de l'âme, la corde subit un premier tressage extérieur, puis, dans certains cas un second tressage. C'est la tresse extérieure qui doit fondre dans le four 4 représenté schématiquement sur la figure 2.The manufacturing process is as follows: after the core is formed, the rope undergoes a first external braiding, then, in some cases, a second braiding. It is the outer braid which must melt in the oven 4 shown diagrammatically in FIG. 2.

Selon une autre caractéristique de l'invention, on utilise le chauffage résultant du passage au four pour stabiliser la corde ou drisse et lui donner la meilleure courbe d'allongement sous charge en gommant le pied de courbe par un étirage. A cet effet, la corde à la sortie du four n'est pas immédiatement enroulée sur une bobine mais est soumise à un étirage sur un jeu de poulies 6. D'une manière générale, les jeux de poulies d'entrée 5 et de sortie 6 permettent une variation entre les vitesses d'entrée et de sortie dans le four et par suite de créer, une traction de thermofixage ou une rétraction de la corde en fonction de son utilisation prévue.According to another characteristic of the invention, the heating resulting from passage through the oven is used to stabilize the cord or halyard and give it the best elongation curve under load by erasing the base of the curve by stretching. For this purpose, the cord at the outlet of the oven is not immediately wound on a reel but is subjected to a drawing on a set of pulleys 6. In general, the sets of input and output pulleys 5 6 allow a variation between the speeds of entry and exit in the furnace and consequently to create, a thermofixing traction or a retraction of the cord according to its intended use.

Parmi les matières pouvant constituer une ou plusieurs âmes, on peut citer les polyamides 6, 6.6, le polyester, les aramides. La couverture tressée ou guipée qui leur sera associée pourra être constituée notamment de polyéthylène de polypropylène, de polyamide 6, de polyamide 6.6. ou de polyester mono ou multifilaments. Among the materials which can constitute one or more cores, mention may be made of polyamides 6, 6.6, polyester, aramids. The braided or gimped cover which will be associated with them may consist in particular of polyethylene of polypropylene, of polyamide 6, of polyamide 6.6. or of mono or multifilament polyester.

Les applications de telles cordes ou drisses sont nombreuses et l'on peut citer : les arcades pour métiers à tisser, les câbles pour drogues, les cordes pour batteries d'élevage, tringlerie automobile, cordes de tennis, etc.The applications of such ropes or halyards are numerous and we can cite: the arches for looms, the cables for drugs, the ropes for rearing batteries, automotive linkage, tennis strings, etc.

- Pour les arcades qui doivent résister le plus longtemps possible à l'abrasion, on utilise, de préférence une couverture assez forte de polyamide 6 sur des âmes parallèles en polyester.- For the arches which must resist abrasion as long as possible, preferably a fairly strong cover of polyamide 6 is used on parallel polyester webs.

- Pour les câbles pour drogues, de faible diamètre avec une résistance à la rupture la plus élevée possible, on utilise une couverture moyenne en polyester sur âme en aramide tel que le SUPERARAM (Marque déposée).- For drug cables, small in diameter with the highest possible breaking strength, a medium polyester cover is used on an aramid core such as SUPERARAM (registered trademark).

- Pour les cordes de destinées aux batteries d'élevage, devant résister à la corrosion en milieu acide, on utilise, de préférence, une couverture en polypropylène multifilaments sur une âme polyester ou une couverture polyester sur âme SUPERARAM.. - For ropes intended for rearing batteries, which must resist corrosion in an acid medium, preferably, a polypropylene multifilament cover on a polyester core or a polyester cover on SUPERARAM core is used.

Il va de soi que de nombreuses variantes peuvent être apportées, notamment par substitution de moyens techniques équivalents, sans sortir pour cela du cadre de l'invention. It goes without saying that many variants can be made, in particular by substitution of equivalent technical means, without departing from the scope of the invention.

Claims (3)

REVENDICATIONS 10 Procédé de fabrication d'une corde comprenant une âme recouverte par au moins une tresse, caractérisé en ce que le point de fusion de la tresse extérieure est inférieur ou égal au point de fusion de l'âme, la fusion de la gaine externe s'effectuant sous une température et une tension contrôlées.CLAIMS 10 Method for manufacturing a cord comprising a core covered by at least one braid, characterized in that the melting point of the outer braid is less than or equal to the melting point of the core, the melting of the outer sheath taking place at a controlled temperature and voltage. 20 Procédé de fabrication selon la revendication 120 The manufacturing method according to claim 1 caractérisé en ce qu'un étirage est effectué sur la characterized in that a stretching is carried out on the corde encore chaude, la tension à la sortie du four cord still hot, the voltage at the outlet of the oven étant supérieure à la tension d'entrée. being greater than the input voltage. 20 Procédé de fabrication selon la revendication 120 The manufacturing method according to claim 1 caractérisé en ce qu'une rétraction est effectuée sur la characterized in that a retraction is carried out on the corde encore chaude, la tension à la sortie du four cord still hot, the voltage at the outlet of the oven étant inférieure à la tension en entrée. being lower than the input voltage. 40 Corde, drisse ou analogue obtenue par le procédé selon40 Rope, halyard or the like obtained by the process according to l'une quelconque des revendications précédentes.  any of the preceding claims.
FR9313169A 1993-11-05 1993-11-05 Method of manufacturing a synthetic halyard or cord and products obtained by this method. Expired - Fee Related FR2711997B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9313169A FR2711997B1 (en) 1993-11-05 1993-11-05 Method of manufacturing a synthetic halyard or cord and products obtained by this method.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9313169A FR2711997B1 (en) 1993-11-05 1993-11-05 Method of manufacturing a synthetic halyard or cord and products obtained by this method.

Publications (2)

Publication Number Publication Date
FR2711997A1 true FR2711997A1 (en) 1995-05-12
FR2711997B1 FR2711997B1 (en) 1997-12-26

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6631609B2 (en) 1999-11-25 2003-10-14 Drahtseilerei Gustav Kocks Gmbh & Co. Method and stranding device for producing a cable or a cable element
US7168455B2 (en) 2002-12-24 2007-01-30 Staubli Lyon Guiding member, jacquard harness incorporating such a member, process for manufacturing such a member and weaving loom comprising such a member

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104762843B (en) * 2015-04-15 2017-01-25 泰州宏达绳网有限公司 Offshore underwater component device mooring cable and manufacturing method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426765A1 (en) * 1978-05-22 1979-12-21 Ashaway Line & Twine Mfg COHERENT ROPE, INTENDED IN PARTICULAR FOR FURNISHING SPORT RACKETS, AND ITS PROCESS FOR MAKING IT

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426765A1 (en) * 1978-05-22 1979-12-21 Ashaway Line & Twine Mfg COHERENT ROPE, INTENDED IN PARTICULAR FOR FURNISHING SPORT RACKETS, AND ITS PROCESS FOR MAKING IT

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6631609B2 (en) 1999-11-25 2003-10-14 Drahtseilerei Gustav Kocks Gmbh & Co. Method and stranding device for producing a cable or a cable element
US7168455B2 (en) 2002-12-24 2007-01-30 Staubli Lyon Guiding member, jacquard harness incorporating such a member, process for manufacturing such a member and weaving loom comprising such a member

Also Published As

Publication number Publication date
FR2711997B1 (en) 1997-12-26

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Effective date: 20080930