FR2502062A1 - Using flexible tubular core to lay=up long hollow rubber profiles - to produce unlimited lengths with an integral lining - Google Patents

Using flexible tubular core to lay=up long hollow rubber profiles - to produce unlimited lengths with an integral lining Download PDF

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Publication number
FR2502062A1
FR2502062A1 FR8105767A FR8105767A FR2502062A1 FR 2502062 A1 FR2502062 A1 FR 2502062A1 FR 8105767 A FR8105767 A FR 8105767A FR 8105767 A FR8105767 A FR 8105767A FR 2502062 A1 FR2502062 A1 FR 2502062A1
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France
Prior art keywords
coating
tubing
rubber
lay
flexible
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
FR8105767A
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French (fr)
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FR2502062B1 (en
Inventor
Philippe Burnel
Claude Gerardot
Original Assignee
Rudolph Tuyaux Flexibles
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Publication date
Application filed by Rudolph Tuyaux Flexibles filed Critical Rudolph Tuyaux Flexibles
Priority to FR8105767A priority Critical patent/FR2502062A1/en
Publication of FR2502062A1 publication Critical patent/FR2502062A1/en
Application granted granted Critical
Publication of FR2502062B1 publication Critical patent/FR2502062B1/fr
Granted legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00—Producing tubular articles
    • B29D23/001—Pipes; Pipe joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2021/00—Use of unspecified rubbers as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)

Abstract

Tubing or ducts of rubber or of thermoplastic material are made by continuously coating a core made of flexible tubing which remains part of the prod. The support tubing may be of metal or plastics material, opt. having a ribbed or undulating profile, pref. preheated just prior to use. Opt. the support tubing is made by a strip winding technique. The coating may be applied by continuous dipping, extrusion coating or a spray-up process. The coating may be partially cured and subsequently post cured after external reinforcing sleeves have been applied. Used esp. for mfr. of relatively large bore tubing in lengths greater than can be laid up and removed from a conventional cantilevered solid core mandrel. Suitable for mfr. of long pipes or ducts for petroleum exploration, transfer of bulk fluids or powders, or enclosing telecommunications.

Description

L'invention concerne un procédé de fabrication de tuyaux de grande longueur en caoutchouc ou matière synthétique thermoplastique, en particulier de tuyaux de grand diamètre. L'invention concerne également les tuyaux obtenus par ce procédé. The invention relates to a method for manufacturing long hoses made of rubber or thermoplastic synthetic material, in particular large diameter hoses. The invention also relates to the pipes obtained by this process.

Les tuyaux en caoutchouc de petit diamètre, inférieur b environ 30 mm, sont fabriqués dans des boudineuses i filière annulaire, la vulcanisation se produisant en continu dès la sortie de la boudineuse. Mais ce procédé n'est pas applicable aux tuyaux de plus grand diamètre, car alors la vulcanisation ne se produit pas assez vite. I1 est donc nécessaire de prévoir un support sur lequel on formera une enduction de caoutchouc. Small diameter rubber hoses, less than about 30 mm, are produced in ring extruders, vulcanization occurring continuously from the exit of the extruder. However, this process is not applicable to pipes of larger diameter, because then vulcanization does not occur quickly enough. It is therefore necessary to provide a support on which a rubber coating will be formed.

Le procédé habituel consiste b utiliser comme support d'enduction un mandrin métallique rigide, qu'il faut retirer après la vulcanisation du caoutchouc. The usual method consists in using as a coating support a rigid metal mandrel, which must be removed after the vulcanization of the rubber.

Mais la longueur d'un tel mandrin est nécéssairement limitée, et ne peut guère dépasser environ 15 mètres, pour des raisons évidentes d'encombrement. La longueur des tu-yaux obtenus est limitée de façon correspondante, et lorsqu'on a besoin d'un tuyau de grande longueur, par exemple de quelques centaines de mètres, on doit prévoir un grand nombre de raccords, ce qui est désavantageux à tous points de vue. But the length of such a mandrel is necessarily limited, and can hardly exceed about 15 meters, for obvious reasons of space. The length of the pipes obtained is correspondingly limited, and when a long pipe, for example a few hundred meters, is required, a large number of fittings must be provided, which is disadvantageous for all. perspectives.

L'invention vise un procédé de fabrication de tuyaux en
tuyaux caoutchouc ou matière synthétique qui permet d'obtenir dee/ d'un seul tenant sans limitation de longueur.The invention relates to a method for manufacturing pipes made of
rubber or synthetic hoses which allow to obtain dee / in one piece without limitation of length.

Le procédé selon l'invention consiste à utiliser comme support d'enduction un tuyau flexible qui reste incorporé à la structure du tuyau fini. The method according to the invention consists in using as a coating support a flexible pipe which remains incorporated into the structure of the finished pipe.

L'invention permet de fabriquer en continu un tuyau en caoutchouc de très grande longueur, car le tuyau flexible qui fait office de support pour l'enduction du caoutchouc peut, étant donné sa flexibilité, être déroulé d'un tambour ou autre dispositif de stockage, et un tambour de diamètre suffisant peut recevoir une longueur très importante de tuyau flexible.  The invention makes it possible to continuously manufacture a very long rubber hose, since the flexible hose which acts as a support for coating the rubber can, given its flexibility, be unwound from a drum or other storage device. , and a drum of sufficient diameter can receive a very large length of flexible pipe.

De façon appropriée, on utilise comme AlSpOrt d'enduction un tuyau flexible, onduleux ou agrafé, de préférence métallique étanche ou non étanche. Suitably, a flexible, wavy or stapled pipe, preferably metallic, leaktight or non-leaktight, is used as the coating AlSpOrt.

Les différentes phases du procédé selon l'invention sont décrites en détail ci-après. The different phases of the process according to the invention are described in detail below.

Un tuyau flexible onduleux est déroulé d'un tambour à une vitesse constante. Les tuyaux de ce type sont bien connus dans la technique et formés par enroulement en hélice d'un profilé. On en trouvera une description par exemple dans le brevet français 1 269 774. Ce tuyau est de préférence métallique, mais on peut aussi utiliser un tuyaux en ratière
mécanique plastique, sous réserve qu'il offre une résistance/suffisante pour servir de support d'enduction.A wavy flexible hose is unwound from a drum at a constant speed. Pipes of this type are well known in the art and formed by helically winding a profile. One will find a description for example in the French patent 1 269 774. This pipe is preferably metallic, but one can also use a pipes in dobby
mechanical plastic, provided that it offers resistance / sufficient to serve as a support for coating.

Le tuyau flexible traverse une zone d'enduction dans laquelle une couche de caoutchouc est appliquée sur la surface extérieure du tuyau flexible. Différentes méthodes peuvent être utilisées pour l'enduction. On peut ainsi réaliser l'enduction au trempé, ou par boudinage. The flexible hose passes through a coating area in which a layer of rubber is applied to the exterior surface of the flexible hose. Different methods can be used for coating. It is thus possible to carry out the coating by dipping, or by extrusion.

Dans le cas de l'enduction au trempé, en particulier, on procèdera avantageusement à un pré-chauffage du tuyau flexible, afin que le caoutchouc liquide entrant en contact avec le tuyau vulcanise instantanément et fasse étanchéité pour le caoutchouc déposez ensuite. Cela permet d' être peu exigeant en ce qui concerne les caractéristiques d'étanchéité du tuyau flexible. In the case of dip coating, in particular, the flexible hose will advantageously be preheated, so that the liquid rubber coming into contact with the hose instantaneously vulcanizes and seals the rubber then deposit. This makes it possible to be undemanding as regards the sealing characteristics of the flexible pipe.

Le tuyau enduit traverse ensuite une zone de vulcanisation dans laquelle le caoutchouc vulcanise sous l'action de moyens tels que des dispositifs de chauffage, par exemple par rayonnement infrarouge ou par induction haute fréquence, des dispositifs à ultrasons, ou autres moyens connus. The coated pipe then passes through a vulcanization zone in which the rubber vulcanizes under the action of means such as heating devices, for example by infrared radiation or by high frequency induction, ultrasonic devices, or other known means.

On fait en sorte qu'à la sortie de la zone de vulcanisa- tion, le caoutchouc ne soit pas complètznent vulcanisé et on applique alors sur la couche de caoutchouc encore molle des armatures de renforcement telles que des
ou en mat appropriée.It is made so that at the exit of the vulcanization zone, the rubber is not completely vulcanized and is then applied to the still soft rubber layer of reinforcements such as
or in an appropriate mast.

tresses, des spirales ou autres, en métal ou en matiWey
On applique ensuite par-dessus ces armatures une nouvelle couche de caoutchouc, par exemple par boudinage, cette couche extérieure servant de couche de protection et éga lement de couche d'aspect.braids, spirals or other, made of metal or matiWey
A new layer of rubber is then applied over these reinforcements, for example by extrusion, this outer layer serving as a protective layer and also as an appearance layer.

Le tuyau ainsi obtenu traverse ensuite une sone de vulcanisation finale où les différentes couches de caoutchouc durcissent de fàçon complète. A la sortie de cette zone de vulcanisation, le tuyau est dans son état terminé et
est enroulé sur un tambour de grand diamètre.The pipe thus obtained then passes through a final vulcanization area where the different layers of rubber harden completely. At the exit of this vulcanization zone, the pipe is in its finished state and
is wound on a large diameter drum.

Le procédé décrit est parfaitement continu et permet donc de fabriquer des tuyaux d'un seul tenant dont la longueur n'est limitée que par la capacité des tambours ou autres dispositifs de stockage. The process described is perfectly continuous and therefore makes it possible to manufacture pipes in one piece, the length of which is limited only by the capacity of the drums or other storage devices.

I1 faut noter qu'on peut choisir comme matière d'enduction non eeulement des caoutchoucs naturels et synthétiques, mat8 aussi des matières thermoplastiques autres que des
élastomères, les conditions opératoires devant dtre adaptées en conséquence.It should be noted that natural and synthetic rubbers can be chosen as a coating material, but also thermoplastic materials other than
elastomers, the operating conditions having to be adapted accordingly.

Le tuyau de l'invention peut entre avantageusement utilisé
dans les domaines de la prospection et exploitation pétro
lière, du transport de fluides et de matières pulvérulen
tes, et de la protection mécanique dans le transport d'informations électriques. The pipe of the invention can advantageously be used between
in the fields of oil exploration and exploitation
transport of fluids and pulverulent materials
and mechanical protection in the transport of electrical information.

Claims (5)

REVENDICATIONS 1.- Procédé de fabrication de tuyau en matière du type caoutchouc ou matière synthétique thermoplastique,du type dans lequel on enduit la surface extérieure d'un support tubulaire de la dite matière, caractérisé par le fait qu'on utilise comme support d'enduction un tuyau flexible qui reste incorporé à la structure du tuyau fini. 1.- A method of manufacturing a hose of the rubber or thermoplastic synthetic material type, of the type in which the outer surface of a tubular support is coated with said material, characterized in that it is used as a coating support a flexible pipe which remains incorporated into the structure of the finished pipe. 2.- Procédé selon la revendication 1, caractérisé par le fait qu'on utilise comme port d'enduction un tuyau flexible onduleux ou agrafez 2.- Method according to claim 1, characterized in that one uses as a coating port a wavy flexible hose or staple 3.- Procédé selon l'une des revendications 1 et 2, caractérisé par le fait qu'on soumet le tuyau flexible, immédiatement avant l1enduction, à un pre-chauffage.  3.- Method according to one of claims 1 and 2, characterized in that the flexible pipe is subjected, immediately before l1enduction, to a pre-heating. 4.- Procédé selon l'une des revendications a à 3, caractérisé par le fait que le tuyau flexible revêtu de la couche d'enduction est soumis à un traitement de vulcanisation prévu pour ne pas provoquer une vulcanisation complète et des armatures de renforcement sont appliquées sur la couche d'enduction immédiatement apres cette vulcanisation. 4.- Method according to one of claims a to 3, characterized in that the flexible pipe coated with the coating layer is subjected to a vulcanization treatment provided not to cause complete vulcanization and reinforcing reinforcements are applied to the coating layer immediately after this vulcanization. 5.- Tuyau de grande longueur, caractérisé par le fait qu'il comprend une couche de matiere du type caoutchouc ou de matière synthétique thermoplastique appliquée sur la surface extérieure d'un tuyau flexible.  5.- Hose of great length, characterized in that it comprises a layer of material of the rubber type or of thermoplastic synthetic material applied to the exterior surface of a flexible hose.
FR8105767A 1981-03-23 1981-03-23 Using flexible tubular core to lay=up long hollow rubber profiles - to produce unlimited lengths with an integral lining Granted FR2502062A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8105767A FR2502062A1 (en) 1981-03-23 1981-03-23 Using flexible tubular core to lay=up long hollow rubber profiles - to produce unlimited lengths with an integral lining

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8105767A FR2502062A1 (en) 1981-03-23 1981-03-23 Using flexible tubular core to lay=up long hollow rubber profiles - to produce unlimited lengths with an integral lining

Publications (2)

Publication Number Publication Date
FR2502062A1 true FR2502062A1 (en) 1982-09-24
FR2502062B1 FR2502062B1 (en) 1984-02-17

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FR8105767A Granted FR2502062A1 (en) 1981-03-23 1981-03-23 Using flexible tubular core to lay=up long hollow rubber profiles - to produce unlimited lengths with an integral lining

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1080987A (en) * 1952-11-07 1954-12-15 Continental Gummi Werke Ag Process for the manufacture of flexible pipes
US3015133A (en) * 1959-02-05 1962-01-02 Anaconda American Brass Co Method of making jacketed strip-wound metal hose
US3045281A (en) * 1958-11-25 1962-07-24 Skobel Max Process and apparatus for making supported sleeving
US3282300A (en) * 1963-10-16 1966-11-01 Electri Flex Company Jacketed metal hose and method of preparation
US3359357A (en) * 1963-10-21 1967-12-19 Raychem Corp Process for coating continuous flexible tubing
FR1550050A (en) * 1967-01-09 1968-12-13
FR2178989A1 (en) * 1972-04-06 1973-11-16 Dunlop Ltd
FR2268614A1 (en) * 1974-04-25 1975-11-21 Coflexip Metal armoured plastic pipes - for use as hoses under external hydrostatic pressure e.g. underwater oil prodn pipes
FR2290292A1 (en) * 1974-11-11 1976-06-04 Moore & Co Samuel FLEXIBLE HYDRAULIC HOSE WITH DIMENSIONAL STABILITY AND PROVIDING IMPROVED CHEMICAL AND THERMAL RESISTANCE
FR2342836A1 (en) * 1976-03-01 1977-09-30 Windmoeller & Hoelscher METHOD AND DEVICE FOR LINING WITH A LAYER OF THERMOPLASTIC MATERIAL BAGS MADE FROM FABRIC OF THERMOPLASTIC STRIPS
US4097564A (en) * 1976-11-08 1978-06-27 Electronized Chemicals Corporation Method of coating flexible sleeving

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1080987A (en) * 1952-11-07 1954-12-15 Continental Gummi Werke Ag Process for the manufacture of flexible pipes
US3045281A (en) * 1958-11-25 1962-07-24 Skobel Max Process and apparatus for making supported sleeving
US3015133A (en) * 1959-02-05 1962-01-02 Anaconda American Brass Co Method of making jacketed strip-wound metal hose
US3282300A (en) * 1963-10-16 1966-11-01 Electri Flex Company Jacketed metal hose and method of preparation
US3359357A (en) * 1963-10-21 1967-12-19 Raychem Corp Process for coating continuous flexible tubing
FR1550050A (en) * 1967-01-09 1968-12-13
FR2178989A1 (en) * 1972-04-06 1973-11-16 Dunlop Ltd
FR2268614A1 (en) * 1974-04-25 1975-11-21 Coflexip Metal armoured plastic pipes - for use as hoses under external hydrostatic pressure e.g. underwater oil prodn pipes
FR2290292A1 (en) * 1974-11-11 1976-06-04 Moore & Co Samuel FLEXIBLE HYDRAULIC HOSE WITH DIMENSIONAL STABILITY AND PROVIDING IMPROVED CHEMICAL AND THERMAL RESISTANCE
FR2342836A1 (en) * 1976-03-01 1977-09-30 Windmoeller & Hoelscher METHOD AND DEVICE FOR LINING WITH A LAYER OF THERMOPLASTIC MATERIAL BAGS MADE FROM FABRIC OF THERMOPLASTIC STRIPS
US4097564A (en) * 1976-11-08 1978-06-27 Electronized Chemicals Corporation Method of coating flexible sleeving

Also Published As

Publication number Publication date
FR2502062B1 (en) 1984-02-17

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