WO2008012421A2 - Method of making a sliding board and resulting sliding board - Google Patents

Method of making a sliding board and resulting sliding board Download PDF

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Publication number
WO2008012421A2
WO2008012421A2 PCT/FR2007/001257 FR2007001257W WO2008012421A2 WO 2008012421 A2 WO2008012421 A2 WO 2008012421A2 FR 2007001257 W FR2007001257 W FR 2007001257W WO 2008012421 A2 WO2008012421 A2 WO 2008012421A2
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WO
WIPO (PCT)
Prior art keywords
skin
flexible
core
board
rigid
Prior art date
Application number
PCT/FR2007/001257
Other languages
French (fr)
Other versions
WO2008012421A3 (en
Inventor
Samuel Lamballe
Cyril Lambert
Original Assignee
Samuel Lamballe
Cyril Lambert
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 Samuel Lamballe, Cyril Lambert filed Critical Samuel Lamballe
Publication of WO2008012421A2 publication Critical patent/WO2008012421A2/en
Publication of WO2008012421A3 publication Critical patent/WO2008012421A3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B32/00—Water sports boards; Accessories therefor
    • B63B32/40—Twintip boards; Wakeboards; Surfboards; Windsurfing boards; Paddle boards, e.g. SUP boards; Accessories specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B32/00—Water sports boards; Accessories therefor
    • B63B32/50—Boards characterised by their constructional features
    • B63B32/51—Inflatable boards, e.g. drop-stitch inflatable boards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B32/00—Water sports boards; Accessories therefor
    • B63B32/50—Boards characterised by their constructional features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B32/00—Water sports boards; Accessories therefor
    • B63B32/57—Boards characterised by the material, e.g. laminated materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B32/00—Water sports boards; Accessories therefor
    • B63B32/60—Board appendages, e.g. fins, hydrofoils or centre boards

Definitions

  • the present invention relates to a method of manufacturing a gliding board and a gliding board obtained by the method.
  • the present invention covers all gliding boards such as for example sailboards, surfboards or the like. In general, these gliding boards are necessarily rigid to be able to support a man in standing position.
  • the present application does not apply to this type of inflatable board of the prior art but gliding boards rigid enough to withstand pressure as exerted by a man in a standing position when using said board.
  • a rigid gliding board is obtained from a rigid foam roll, polyurethane or polystyrene for example. Following, this foam bread is cut along its longitudinal axis to integrate a wooden slat to stiffen the foam roll which is then shaped manually or automatically according to the final shape of the gliding board. Subsequently, the foam roll is manually laminated with glass fibers embedded in a polymer resin. According to the variants, uses a polyester resin when the foam roll is made of polyurethane foam or an epoxy resin when the foam roll is made of polystyrene. After polymerization, the gliding board is sanded to be finished with a varnish. Finally, inserts, such as for example fins, are secured to the gliding board by gluing.
  • the boards made according to this method meet the expectations of users and allow a possible custom manufacturing to obtain a form adapted to the user.
  • a process leads to high manufacturing costs, which are reflected in the price of the snowboard.
  • an industrial manufacture may be suitable for the majority of the practitioners.
  • a gliding board has a relatively high price because of the necessary basic materials, including rigid foam bread.
  • each of them may comprise two spaced skins and a rigid multicellular foam material or a honeycomb-like honeycomb structure providing a compressive strength.
  • reinforcements consisting of a sandwich made in the same manner as the half-shells may be interposed between said half-shells.
  • the present invention aims to overcome the drawbacks of the prior art by proposing a gliding board manufacturing method to reduce costs and to obtain a glide board sufficiently rigid and resistant to shocks.
  • the subject of the invention is a method for manufacturing a rigid gliding board, characterized in that it consists in covering the outer surface with a core of compressible cellular material having the shape of said board with a coating. forming a tight and flexible skin, said coating being in a material initially liquid or pasty to infiltrate directly or not the surface cells of said core, then cured to obtain a surface bond of said skin with said core, and to inject a gas under pressure inside the waterproof and flexible skin to give the board made from flexible elements rigidity.
  • FIGS. 2A to 2F are sections illustrating in detail the different steps of a first embodiment
  • FIGS. 3A to SC are sections illustrating the steps of a second embodiment
  • FIGS. 4A to 4D are sections illustrating the steps of a third embodiment
  • FIGS. 5A to 5D are sections illustrating the steps of a fourth embodiment
  • FIGS. 6A to 6D are sections illustrating the steps of a fifth embodiment
  • FIG. 7 is a perspective view of a link of a stiffener
  • FIG. 8A is a perspective view of a stiffener capable of being wound
  • FIG. 8B is a perspective view of a stiffener in the upright position
  • FIG. 9 is a section of a variant of a gliding board in a transverse vertical plane
  • FIG. 10 is a section of another variant of a gliding board in a transverse vertical plane.
  • FIG. 11 is a perspective view of the gliding board of Figure 10.
  • a gliding board for example a surfboard.
  • the invention is not limited to this application.
  • the invention relates more specifically to a gliding board rigid enough to withstand pressure exerted by a person during its use.
  • the gliding board comprises a core 12 of compressible and flexible foam which resumes after compression its initial shape, coated with a tight and flexible skin 14 may contain air under pressure.
  • compressible or flexible foam is meant any type of flexible cellular material, capable of being deformed by compression but resistant to traction. In all cases, this material must allow inflation with a gas inside the tight skin.
  • the cells of the cellular material are open.
  • a compressible foam polyurethane For example, we choose a compressible foam polyurethane.
  • waterproof and flexible skin is meant a plastic skin in an initially liquid or pasty material allowing direct infiltration or not in the surface cells of the core, then hardened to obtain a sealed enclosure and a surface bond between said skin and said core.
  • hardness is meant that the material is in the solid state, but flexible.
  • the sealed skin is for example polyurethane elastomer, silicone or natural latex.
  • the originality of the invention stems from the fact that from two flexible materials, one obtains a rigid gliding board.
  • the pressure inside the sealed skin 14 is sufficient, for example greater than 1 bar, and the sealed skin 14 and the core 12 are connected over the entire contact surface to avoid the delamination of the sealed skin 14 and obtain a rigid board due to the tensile strength of the core 12 compressible foam.
  • the invention is not the components forming the shell that confer rigidity to the gliding board, as for the composite boards of the prior art, but the pressure.
  • these elements can be flexible which significantly increases the shock resistance of the board, making it almost unbreakable, unlike the planks of composite material of the prior art.
  • the board can be rolled or folded, facilitating the transport.
  • This board also makes it possible to respect the environment by eliminating the glass fibers, the rigid foam and the resins used for the planks of the prior art.
  • the flexible foam core can be upgraded to a stuffing material for example. It is noted that the present invention could be used to make other types of craft, for example kayaks, catamarans or the like, or floats.
  • the pressure is adjusted according to the dimensions of the board and / or the desired rigidity.
  • the skin 14 is made of a liquid or pasty material in the initial state so as to infiltrate directly or indirectly the surface cells of the core, said material then being cured. After hardening, the skin is soft in the solid state.
  • the skin 14 may comprise a surface reinforcement 16, visible in FIGS. 3A to 3C, in the form of woven or nonwoven fibers, natural or synthetic, embedded in the tight skin, arranged in a plane substantially parallel to the outer surface of the core 12 limiting the elasticity of the waterproof skin and thereby to enhance the rigidity of the gliding board.
  • the board comprises a reinforcement 18 with a large mesh in the form of a 3-dimensional woven fabric or an ultra-crosslinked flexible foam. , for example with cavities greater than 3 mm, disposed at the interface between the skin 14 and the core 12 to strengthen their bonds and to avoid the delamination of said skin.
  • the sealed skin 14 comprises a valve allowing the introduction of air or any other gas inside the sealed skin.
  • the sealed skin 14 comprises a valve for releasing the gas contained within said sealed skin 14 to the outside when the pressure exceeds a certain threshold.
  • the gliding board may comprise at least one stiffener 20, preferably disposed in a longitudinal vertical median plane, which may be in the foam core or not as illustrated in FIG. 9. This stiffener 20 can be placed at the deck or hull of the board. Preferably, this stiffener 20 can be deformed in a substantially vertical plane so as to wind up as illustrated in FIG.
  • the stiffener can wind in only one direction as illustrated in Figure SA and remains stiff in the other direction of winding as shown in Figure 8B.
  • the stiffener 20 comprises a plurality of links 22 arranged one after the other with a hinge between them allowing a pivoting movement in one direction.
  • a link 22 in FIG. 7 is shown in detail.
  • It comprises a body with a first plate-shaped portion 24 with an upwardly facing V-shaped recess 26 and a second plate-shaped portion 28 offset upwardly from the first-part plate with lower part a projecting portion 30 of complementary shape to the recess
  • Each link comprises first hinge means, between the first portion and the second portion, in the form of a bore 32 perpendicular to the V-shape and second hinge means at the end of the second portion 28 in form. an axis 34 capable of cooperating with the bore 32 of the adjacent link.
  • FIG. 7 The link described in Figure 7 is given by way of example only, other variants being conceivable to obtain a winding in one direction of the stiffener.
  • the board can be equipped with a non-rollable stiffener, removable or not, removable or not, foldable or not.
  • FIGs 10 and 11 there is shown a surfboard according to a variant of the invention.
  • This board 40 comprises a body 42 with on the one hand a tight and flexible skin 14 capable of forming an enclosure on the surface of a flexible foam core 12.
  • This board comprises at least one stiffener, and preferably several stiffeners 20 parallel and arranged in the longitudinal direction of the board. These stiffeners are held by any appropriate means, for example by bonding to the body 42, being arranged in sleeves provided in a textile bonded to the body 42, or by being arranged in grooves 44 formed in a plate 46 secured to the body 42 removably or not.
  • the plate 46 may be made in one piece or in several parts.
  • This plate 46 is preferably made of a flexible material to be rolled. For example, it can be made of closed cell foam for example a foam marketed under the plastazote® brand. This plate 46 can be glued against the body 42.
  • FIGS. 2A to 2F various steps of the production method are shown. To clearly show the interaction between the skin 14 and the core 12, the cells of the core 12 have been exaggeratedly enlarged.
  • a flexible foam roll is produced in the form of the gliding board to be made, to the thickness of the skin near the watertightness.
  • This shaping of the core can be performed by cutting or pouring into a mold of an expandable liquid or pasty material.
  • This application may be by spreading at least one layer of the material of the sealed skin over the entire surface of the core, by spraying, stamping or dipping.
  • FIGS. 2A to 2E there is shown the progressive impregnation of the surface cells of the core with the material in liquid or pasty form of the sealed skin.
  • the surface cells are closed by said material, the latter remains on the surface so as to form the sealed skin as illustrated in FIG. 2F.
  • a reinforcing textile 16 is embedded in the sealed skin 14.
  • Figures 3A and 3B summarize the steps illustrated in Figures 2A to 2F.
  • the textile After the formation of a portion of the sealed skin 14 on the surface of the core 12 is deposited the textile which is subsequently covered with at least one new layer of material forming the sealed skin to walnut.
  • Area 36 corresponds to the area of hung skin tight with the core.
  • the initially liquid or pasty material of the sealed skin is previously applied against the walls of a mold to the shapes of the gliding board to be produced. Before hardening, the material forming the core is injected into the mold. During the expansion of the material forming the core, the latter comes into contact with the material of the sealed skin which in liquid form still infiltrates at the level of the superficial cells of the core.
  • a reinforcement 16 in the form of a textile or the like before closing the mold, embedding in the waterproof skin material a reinforcement 16 in the form of a textile or the like.
  • a wide-meshed reinforcement 18 is disposed against the walls of a mold in the form of the gliding board to be made to the thickness of the near skin, as shown in FIG. 4A.
  • the expandable material of the core is injected as shown in FIG. 4B.
  • it After hardening, it is demolded so as to obtain a flexible foam-reinforced bread, as illustrated in FIG. Following, as before, is applied over the entire surface of the liquid or pasty material of the sealed skin, as shown in Figure 4D.
  • a rigid gliding board is obtained from flexible materials.
  • This configuration provides a better grip to the extent that we can choose for reinforcement 18 a material for a stronger cohesion with the material of the waterproof skin.
  • the initially liquid or pasty material of the sealed skin is previously applied against the walls of a mold to the shapes of the gliding board to be produced, as shown in Figure 5A.
  • a wide mesh reinforcement 18 is applied which partially penetrates into the skin material as shown in FIG. 5B.
  • FIGS. 6A to 6B show a variant close to that described in FIGS. 5A to 5D.
  • a complex is placed at the surfaces of the mold comprising a reinforcement 18 partially embedded in a tight skin 14 already hardened.
  • the expandable material of the core is injected into the mold as shown in FIG. 6C.
  • the connection between the sealed skin 14 and the core 12 is provided exclusively by the reinforcement 18.
  • a gliding board according to the invention could include a reinforcement 16 in textile form embedded in the waterproof skin and a reinforcement 18 with wide mesh at the interface between the sealed skin and the core.
  • Elements such as fins or means for anchoring accessories can be reported on the gliding board of the invention.
  • recesses are provided at the surface of the gliding board in which are partially introduced and glued the added elements.
  • the board may comprise plastic fins 48 with a perpendicular plate, against glued.
  • the inserts are against glued on the surface of the board, no recess being provided.
  • these recesses are cut in the flexible foam core before it is covered by the tight skin or provided in the shape of the mold used for the embodiments described in FIGS. 4A to 4D, 5A to 5D and 6A to 6D.
  • the sealed skin covers the entire foam core to form a sealed cavity containing the gas under pressure.
  • a stiffener 20 may be connected to the board as another element.
  • the underside of the board or hull comprises a longitudinal channel 36 in which a stiffener 20 may be housed.
  • the ends of the channel may be open or not.
  • this channel is hollowed out or formed in the flexible foam core and covered with a tight skin so that the surface of the core is entirely covered by said sealed skin.
  • the stiffener is maintained in this housing by any appropriate means, for example by gluing or by using a textile 38 bonded to the sealed skin on either side of said channel.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Textile Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

The subject of the invention is a method of making a rigid sliding board, characterized in that it consists in covering the outer surface of a compressible foam core (12) in the shape of said board with a covering forming a flexible watertight skin (14), said covering being made of an initially liquid or pasty material so that it infiltrates directly or indirectly the surface cells of said core (12), and then hardens so that said skin forms a surface bond with said core, and injecting a compressed gas inside the flexible watertight skin in order to give the board, made from flexible components, its stiffness.

Description

PROCEDE DE FABRICATION D'UNE PLANCHE DE GLISSE ET PLANCHE DE METHOD FOR MANUFACTURING A SLIDING BOARD AND BOARD OF
GLISSE AINSI OBTENUESLIDER THUS OBTAINED
La présente invention se rapporte à un procédé de fabrication d'une planche de glisse ainsi qu'à une planche de glisse obtenue selon le procédé. La présente invention couvre toutes les planches de glisse telles que par exemple les planches à voile, les planches de surf ou analogue. De manière générale, ces planches de glisse sont nécessairement rigides pour pouvoir supporter un homme en position debout.The present invention relates to a method of manufacturing a gliding board and a gliding board obtained by the method. The present invention covers all gliding boards such as for example sailboards, surfboards or the like. In general, these gliding boards are necessarily rigid to be able to support a man in standing position.
Il existe des planches de glisse gonflables, comportant une enveloppe en matière plastique enfermant de l'air mais ces planches sont destinées uniquement aux enfants qui s'allongent dessus. Lesdites planches gonflables ne sont pas généralement suffisamment rigides pour supporter une pression telle qu'exercée par un homme en position debout.There are inflatable slides, with a plastic envelope enclosing air but these boards are only for children who lie on it. Said inflatable boards are not generally rigid enough to withstand pressure as exercised by a man in a standing position.
La présente demande ne vise pas ce type de planche gonflable de l'art antérieur mais les planches de glisse suffisamment rigides pour supporter une pression telle qu'exercée par un homme en position debout lors de l'utilisation de ladite planche.The present application does not apply to this type of inflatable board of the prior art but gliding boards rigid enough to withstand pressure as exerted by a man in a standing position when using said board.
Selon un premier mode de réalisation, une planche de glisse rigide est obtenue à partir d'un pain de mousse rigide, en polyuréthane ou en polystyrène par exemple. En suivant, ce pain de mousse est découpé selon son axe longitudinal pour intégrer une latte en bois afin de rigidif ier le pain de mousse qui est ensuite mis en forme manuellement ou de manière automatique selon la forme définitive de la planche de glisse. Par la suite, le pain de mousse est stratifié manuellement avec des fibres de verre noyées dans une résine polymère. Selon les variantes, on utilise une résine polyester lorsque le pain de mousse est en mousse polyuréthane ou une résine époxy lorsque le pain de mousse est en polystyrène. Après polymérisation, la planche de glisse est poncée pour être revêtue d'un vernis de finition. Enfin, des inserts, tels que par exemple des dérives, sont solidarisés à la planche de glisse par collage.According to a first embodiment, a rigid gliding board is obtained from a rigid foam roll, polyurethane or polystyrene for example. Following, this foam bread is cut along its longitudinal axis to integrate a wooden slat to stiffen the foam roll which is then shaped manually or automatically according to the final shape of the gliding board. Subsequently, the foam roll is manually laminated with glass fibers embedded in a polymer resin. According to the variants, uses a polyester resin when the foam roll is made of polyurethane foam or an epoxy resin when the foam roll is made of polystyrene. After polymerization, the gliding board is sanded to be finished with a varnish. Finally, inserts, such as for example fins, are secured to the gliding board by gluing.
Les planches réalisées selon ce procédé répondent aux attentes des utilisateurs et permettent une fabrication éventuellement sur mesure pour obtenir une forme adaptée à l'utilisateur. Cependant un tel procédé conduit à des coûts de fabrication élevés, répercutés sur le prix de la planche de glisse. Par ailleurs, si une fabrication sur mesure est justifiée pour l'élite, une fabrication industrielle peut convenir pour la majorité des pratiquants. Cependant, même fabriquée de manière industrielle, une planche de glisse a un prix relativement élevé du fait des matériaux de base nécessaires, et notamment du pain en mousse rigide.The boards made according to this method meet the expectations of users and allow a possible custom manufacturing to obtain a form adapted to the user. However, such a process leads to high manufacturing costs, which are reflected in the price of the snowboard. On the other hand, if a made-to-measure manufacturing is justified for the elite, an industrial manufacture may be suitable for the majority of the practitioners. However, even industrially manufactured, a gliding board has a relatively high price because of the necessary basic materials, including rigid foam bread.
On connaît également d'après les documents FR-2.336.954 et EP-575.130 des planches de glisses réalisées à partir de matériaux composites. Selon ces documents, les planches sont creuses et sont obtenues par l'assemblage de deux demi-coques, l'une pour la partie supérieure de la planche et l'autre pour la partie inférieure. Pour renforcer la rigidité de chaque demi-coque, chacune d'elles peut comprendre deux peaux espacées enïre lesquelles est disposé un matériau en mousse multicellulaire rigide ou une structure alvéolaire de type nid d'abeilles assurant une résistance à la compression. Eventuellement, des renforts constitués d'un sandwich réalisé de la même manière que les demi-coques peuvent être intercalés entre lesdites demi coques.It is also known from documents FR-2,336,954 and EP-575.130 boards glides made from composite materials. According to these documents, the boards are hollow and are obtained by assembling two half-shells, one for the upper part of the board and the other for the lower part. To reinforce the rigidity of each half-shell, each of them may comprise two spaced skins and a rigid multicellular foam material or a honeycomb-like honeycomb structure providing a compressive strength. Optionally, reinforcements consisting of a sandwich made in the same manner as the half-shells may be interposed between said half-shells.
Les procédés de réalisation de ces planches sont relativement complexes et génèrent un coût de revient relativement élevé. Par ailleurs, il est nécessaire de prévoir des demi-coques très rigides pour conférer à la planche sa rigidité ce qui conduit généralement à avoir une structure fragile en matière de résistance aux chocs.The methods for producing these boards are relatively complex and generate a relatively high cost price. Furthermore, it is necessary to provide very rigid half-shells to give the board its rigidity which generally leads to have a fragile structure in terms of impact resistance.
Λussi, la présente invention vise à pallier aux inconvénients de l'art antérieur en proposant un procédé de fabrication de planche de glisse permettant d'en réduire les coûts et d'obtenir une planche de glisse suffisamment rigide et résistante aux chocs.Also, the present invention aims to overcome the drawbacks of the prior art by proposing a gliding board manufacturing method to reduce costs and to obtain a glide board sufficiently rigid and resistant to shocks.
A cet effet, l'invention a pour objet un procédé de fabrication d'une planche de glisse rigide caractérisé en ce qu'il consiste à recouvrir la surface extérieure d'un noyau en matériau alvéolaire compressible ayant la forme de ladite planche avec un revêtement formant une peau étanche et souple, ledit revêtement étant en une matière initialement liquide ou pâteuse pour infiltrer directement ou non les alvéoles superficielles dudit noyau, puis durcie afin d'obtenir une liaison surfacique de ladite peau avec ledit noyau, et à injecter un gaz sous pression à l'intérieur de la peau étanche et souple afin de conférer à la planche réalisée à partir d'éléments souples sa rigidité. D'autres caractéristiques et avantages ressortiront de la description qui va suivre de l'invention, description donnée à titre d'exemple uniquement, en regard des dessins annexés sur lesquels : - la figure 1 est une coupe d'une planche de glisse selon son plan vertical longitudinal,To this end, the subject of the invention is a method for manufacturing a rigid gliding board, characterized in that it consists in covering the outer surface with a core of compressible cellular material having the shape of said board with a coating. forming a tight and flexible skin, said coating being in a material initially liquid or pasty to infiltrate directly or not the surface cells of said core, then cured to obtain a surface bond of said skin with said core, and to inject a gas under pressure inside the waterproof and flexible skin to give the board made from flexible elements rigidity. Other features and advantages will emerge from the following description of the invention, description given by way of example only, with reference to the accompanying drawings in which: - Figure 1 is a section of a gliding board according to its longitudinal vertical plane,
- les figures 2A à 2F sont des coupes illustrant en détails les différentes étapes d'un premier mode de réalisation,FIGS. 2A to 2F are sections illustrating in detail the different steps of a first embodiment,
- les figures 3A à SC sont des coupes illustrant les étapes d'un deuxième mode de réalisation,FIGS. 3A to SC are sections illustrating the steps of a second embodiment,
- les figures 4A à 4D sont des coupes illustrant les étapes d'un troisième mode de réalisation, - les figures 5A à 5D sont des coupes illustrant les étapes d'un quatrième mode de réalisation,FIGS. 4A to 4D are sections illustrating the steps of a third embodiment, FIGS. 5A to 5D are sections illustrating the steps of a fourth embodiment,
- les figures 6A à 6D sont des coupes illustrant les étapes d'un cinquième mode de réalisation, - la figure 7 est une vue en perspective d'un maillon d'un raidisseur,FIGS. 6A to 6D are sections illustrating the steps of a fifth embodiment, FIG. 7 is a perspective view of a link of a stiffener,
- la figure 8A est une vue en perspective d'un raidisseur susceptible d'être enroulé,FIG. 8A is a perspective view of a stiffener capable of being wound,
- la figure 8B est une vue en perspective d'un raidisseur en position droite,FIG. 8B is a perspective view of a stiffener in the upright position,
- la figure 9 est une coupe d'une variante d'une planche de glisse selon un plan vertical transversal,FIG. 9 is a section of a variant of a gliding board in a transverse vertical plane;
- la figure 10 est une coupe d'une autre variante d'une planche de glisse selon un plan vertical transversal, etFIG. 10 is a section of another variant of a gliding board in a transverse vertical plane, and
- la figure 11 est une vue en perspective de la planche de glisse de la figure 10. Sur la figure 1, on a représenté en 10 une planche de glisse, par exemple une planche de surf. Cependant, l'invention n'est pas limitée à cette application. L'invention se rapporte plus précisément à une planche de glisse suffisamment rigide pour supporter une pression exercée par une personne lors de son utilisation. Selon l'invention, la planche de glisse comprend un noyau 12 en mousse compressible et souple qui reprend après compression sa forme initiale, revêtu d'une peau étanche et souple 14 susceptible de contenir de l'air sous pression. Par mousse compressible ou souple, on entend tout type de matériau alvéolaire souple, susceptible d'être déformé par compression mais résistant à la traction. Dans tous les cas, ce matériau doit permettre le gonflage à l'aide d'un gaz à l'intérieur de la peau étanche. De préférence, les cellules du matériau alvéolaire sont ouvertes. A titre d'exemple, on choisit une mousse compressible en polyuréthane. Par peau étanche et souple, on entend une peau en matière plastique se présentant dans une matière initialement liquide ou pâteuse permettant l'infiltration directe ou non dans les alvéoles superficielles du noyau, puis durcie de manière à obtenir une enceinte étanche et une liaison surfacique entre ladite peau et ledit noyau. Par durcie, on entend que la matière est à l'état solide, mais souple.- Figure 11 is a perspective view of the gliding board of Figure 10. In Figure 1, there is shown in 10 a gliding board, for example a surfboard. However, the invention is not limited to this application. The invention relates more specifically to a gliding board rigid enough to withstand pressure exerted by a person during its use. According to the invention, the gliding board comprises a core 12 of compressible and flexible foam which resumes after compression its initial shape, coated with a tight and flexible skin 14 may contain air under pressure. By compressible or flexible foam is meant any type of flexible cellular material, capable of being deformed by compression but resistant to traction. In all cases, this material must allow inflation with a gas inside the tight skin. Preferably, the cells of the cellular material are open. For example, we choose a compressible foam polyurethane. By waterproof and flexible skin is meant a plastic skin in an initially liquid or pasty material allowing direct infiltration or not in the surface cells of the core, then hardened to obtain a sealed enclosure and a surface bond between said skin and said core. By hardness is meant that the material is in the solid state, but flexible.
A titre d'exemple, la peau étanche est par exemple en élastomère de polyuréthane, en silicone ou en latex naturel. L'originalité de l'invention découle du fait qu'à partir de deux matériaux souples, on obtient une planche de glisse rigide. Pour cela, il est nécessaire que la pression à l'intérieur de la peau étanche 14 soit suffisante, par exemple supérieure à 1 bar, et que la peau étanche 14 et le noyau 12 soient reliés sur toute la surface de contact afin d'éviter le délaminage de la peau étanche 14 et obtenir une planche rigide en raison de la résistance à la traction du noyau 12 en mousse compressible.For example, the sealed skin is for example polyurethane elastomer, silicone or natural latex. The originality of the invention stems from the fact that from two flexible materials, one obtains a rigid gliding board. For this, it is necessary that the pressure inside the sealed skin 14 is sufficient, for example greater than 1 bar, and the sealed skin 14 and the core 12 are connected over the entire contact surface to avoid the delamination of the sealed skin 14 and obtain a rigid board due to the tensile strength of the core 12 compressible foam.
Selon l'invention, ce n'est pas les constituants formant la coque qui confèrent la rigidité à la planche de glisse, comme pour les planches en composite de l'art antérieur, mais la pression. Ainsi, ces éléments peuvent être souples ce qui accroît sensiblement la résistance aux chocs de la planche, en la rendant quasiment incassable, contrairement aux planches en matériau composite de l'art antérieur.According to the invention, it is not the components forming the shell that confer rigidity to the gliding board, as for the composite boards of the prior art, but the pressure. Thus, these elements can be flexible which significantly increases the shock resistance of the board, making it almost unbreakable, unlike the planks of composite material of the prior art.
Les matériaux étant souples, la planche peut être roulée ou pliée, facilitant le transport. Cette planche permet également de respecter l'environnement en supprimant les fibres de verre, la mousse rigide et les résines utilisées pour les planches de l'art antérieur. Ainsi, le noyau en mousse souple peut être revalorisé pour en faire un matériaux de bourrage par exemple. On note que la présente invention pourrait être utilisée pour réaliser d'autres types d'embarcations, par exemple des kayaks, des catamarans ou analogue, ou des flotteurs.The materials being flexible, the board can be rolled or folded, facilitating the transport. This board also makes it possible to respect the environment by eliminating the glass fibers, the rigid foam and the resins used for the planks of the prior art. Thus, the flexible foam core can be upgraded to a stuffing material for example. It is noted that the present invention could be used to make other types of craft, for example kayaks, catamarans or the like, or floats.
Cette technique permet contrairement à une planche gonflée de l'art antérieur d'obtenir pour la planche des formes maîtrisées même sous pression, notamment au niveau des bords supérieur et inférieur, et d'avoir les mêmes fonctionnalités qu'une planche à base d'un pain en mousse rigide de l'art antérieur. Ainsi, à la manière d'un pain de mousse rigide pour les planches rigides de l'art antérieur, les formes maîtrisées de la planche sont conférées par le noyau en mousse souple qui est mis en forme selon lesdites formes maîtrisées.This technique makes it possible, contrary to an inflated board of the prior art, to obtain for the board forms that are controlled even under pressure, especially at the level of the upper and lower edges, and to have the same functionalities as a board based on a rigid foam bread of the prior art. Thus, in the manner of a rigid foam roll for the rigid boards of the prior art, the controlled forms of the board are imparted by the flexible foam core which is shaped according to said mastered forms.
Concernant le gonflage, on ajuste la pression en fonction des dimensions de la planche et/ou de la rigidité souhaitée.Concerning the inflation, the pressure is adjusted according to the dimensions of the board and / or the desired rigidity.
Pour éviter un délaminage localisé de la peau étanche 14, cette dernière est en une matière liquide ou pâteuse à l'état initial afin d'infiltrer directement ou indirectement les alvéoles superficielles du noyau, ladite matière étant ensuite durcie. Après durcissement, la peau est souple à l'état solide. Selon une autre caractéristique de l'invention, la peau 14 peut comprendre un renfort 16 surfacique, visible sur les figures 3A à 3C, sous forme de fibres tissées ou non tissées, naturelles ou synthétiques, noyées dans la peau étanche, disposées dans un plan sensiblement parallèle à la surface extérieure du noyau 12 limitant l'élasticité de la peau étanche et permettant de la sorte de renforcer la rigidité de la planche de glisse. Ce renfort permet d'augmenter la pression à l'intérieur de la peau étanche en limitant les déformations de ladite peau afin d'augmenter la rigidité de la planche et la solidité de la peau. Selon une autre caractéristique de l'invention illustrée sur les figures 4A à 4b, 5A à 5b et 6A à 6b, la planche comprend un renfort 18 à mailles larges sous forme d'un tissé en 3 dimensions ou d'une mousse souple ultra réticulée, par exemple avec des alvéoles supérieures à 3 mm, disposé au niveau de l'interface entre la peau 14 et le noyau 12 afin de renforcer leurs liaisons et d'éviter le délaminage de ladite peau.To prevent localized delamination of the sealed skin 14, the latter is made of a liquid or pasty material in the initial state so as to infiltrate directly or indirectly the surface cells of the core, said material then being cured. After hardening, the skin is soft in the solid state. According to another characteristic of the invention, the skin 14 may comprise a surface reinforcement 16, visible in FIGS. 3A to 3C, in the form of woven or nonwoven fibers, natural or synthetic, embedded in the tight skin, arranged in a plane substantially parallel to the outer surface of the core 12 limiting the elasticity of the waterproof skin and thereby to enhance the rigidity of the gliding board. This reinforcement makes it possible to increase the pressure inside the sealed skin by limiting the deformations of said skin in order to increase the rigidity of the board and the strength of the skin. According to another characteristic of the invention illustrated in FIGS. 4A to 4b, 5A to 5b and 6A to 6b, the board comprises a reinforcement 18 with a large mesh in the form of a 3-dimensional woven fabric or an ultra-crosslinked flexible foam. , for example with cavities greater than 3 mm, disposed at the interface between the skin 14 and the core 12 to strengthen their bonds and to avoid the delamination of said skin.
Selon une autre caractéristique de l'invention, la peau étanche 14 comprend une valve permettant l'introduction d'air ou de tout autre gaz à l'intérieur de la peau étanche.According to another characteristic of the invention, the sealed skin 14 comprises a valve allowing the introduction of air or any other gas inside the sealed skin.
Selon une autre caractéristique de l'invention, la peau étanche 14 comprend une soupape permettant de libérer le gaz contenu à l'intérieur de ladite peau étanche 14 vers l'extérieur lorsque la pression dépasse un certain seuil. Selon une autre caractéristique de l'invention, la planche de glisse peut comprendre au moins un raidisseur 20, disposé de préférence dans un plan médian vertical longitudinal, qui peut être dans le noyau en mousse ou non comme illustré sur la figure 9. Ce raidisseur 20 peut être placé au niveau du pont ou de la carène de la planche. De préférence, ce raidisseur 20 peut se déformer dans un plan sensiblement vertical de manière à s'enrouler comme illustré sur la figure SA. Avantageusement, le raidisseur ne peut s'enrouler que selon un seul sens comme illustré sur la figure SA et reste raide dans l'autre sens d'enroulement comme illustré sur la figure 8B. Cette configuration permet de renforcer la raideur longitudinale de la planche et permet de limiter la flexion de la planche lorsqu'une pression est exercée sur la face supérieure de haut en bas, par exemple lorsqu'un surfeur se met en position debout sur la planche de glisse. Selon un mode de réalisation, le raidisseur 20 comprend une pluralité de maillons 22 disposés les uns à la suite des autres avec une articulation entre eux permettant un mouvement de pivotement dans un seul sens. On a représenté en détails un maillon 22 sur la figure 7.According to another characteristic of the invention, the sealed skin 14 comprises a valve for releasing the gas contained within said sealed skin 14 to the outside when the pressure exceeds a certain threshold. According to another characteristic of the invention, the gliding board may comprise at least one stiffener 20, preferably disposed in a longitudinal vertical median plane, which may be in the foam core or not as illustrated in FIG. 9. This stiffener 20 can be placed at the deck or hull of the board. Preferably, this stiffener 20 can be deformed in a substantially vertical plane so as to wind up as illustrated in FIG. Advantageously, the stiffener can wind in only one direction as illustrated in Figure SA and remains stiff in the other direction of winding as shown in Figure 8B. This configuration reinforces the longitudinal stiffness of the board and limits the bending of the board when pressure is exerted on the upper face from top to bottom, for example when a surfer is standing on the board of slips. According to one embodiment, the stiffener 20 comprises a plurality of links 22 arranged one after the other with a hinge between them allowing a pivoting movement in one direction. A link 22 in FIG. 7 is shown in detail.
Il comprend un corps avec une première partie 24 en forme de plaque avec un évidement 26 en V orienté vers le haut et une seconde partie 28 en forme de plaque, décalée vers le haut par rapport à la plaque de la première partie avec en partie inférieure une partie en saillie 30 de forme complémentaire à l'évidementIt comprises a body with a first plate-shaped portion 24 with an upwardly facing V-shaped recess 26 and a second plate-shaped portion 28 offset upwardly from the first-part plate with lower part a projecting portion 30 of complementary shape to the recess
26 en V.26 in V.
Chaque maillon comprend des premiers moyens d'articulation, entre la première partie et la seconde partie, sous forme d'un alésage 32 perpendiculaire à la forme en V et des seconds moyens d'articulation à l'extrémité de la seconde partie 28 sous forme d'un axe 34 susceptible de coopérer avec l'alésage 32 du maillon adjacent.Each link comprises first hinge means, between the first portion and the second portion, in the form of a bore 32 perpendicular to the V-shape and second hinge means at the end of the second portion 28 in form. an axis 34 capable of cooperating with the bore 32 of the adjacent link.
Le maillon décrit sur la figure 7 est donné à titre d'exemple uniquement, d'autres variantes étant envisageables pour obtenir un enroulement selon un seul sens du raidisseur. Selon d'autres variantes, la planche peut être équipée d'un raidisseur non enroulable, amovible ou non, démontable ou non, pliable ou non. Sur les figures 10 et 11, on a représenté une planche de surf selon une variante de l'invention. Cette planche 40 comprend un corps 42 avec d'une part une peau étanche et souple 14 susceptible de former une enceinte à la surface d'un noyau en mousse souple 12.The link described in Figure 7 is given by way of example only, other variants being conceivable to obtain a winding in one direction of the stiffener. According to other variants, the board can be equipped with a non-rollable stiffener, removable or not, removable or not, foldable or not. In Figures 10 and 11, there is shown a surfboard according to a variant of the invention. This board 40 comprises a body 42 with on the one hand a tight and flexible skin 14 capable of forming an enclosure on the surface of a flexible foam core 12.
Cette planche comprend au moins un raidisseur, et de préférence plusieurs raidisseurs 20 parallèles et disposés dans le sens longitudinal de la planche. Ces raidisseurs sont maintenus par tous moyens appropriés, par exemple par collage sur le corps 42, en étant disposés dans des fourreaux prévus dans un textile collé sur le corps 42, ou en étant disposés dans des rainures 44 ménagées dans une plaque 46 solidarisée sur le corps 42 de manière démontable ou non. La plaque 46 peut être réalisée d'une seule pièce ou en plusieurs parties. Cette plaque 46 est de préférence réalisée en un matériau souple pour être roulée. A titre d'exemple, elle peut être réalisée en mousse à cellules fermées par exemple en une mousse commercialisée sous la marque plastazote®. Cette plaque 46 peut être contre collée sur le corps 42. Sur les figures 2A à 2F, on α représenté différentes étapes du procédé de réalisation. Pour bien montrer l'interaction entre la peau 14 et le noyau 12, les alvéoles du noyau 12 ont été exagérément grossies.This board comprises at least one stiffener, and preferably several stiffeners 20 parallel and arranged in the longitudinal direction of the board. These stiffeners are held by any appropriate means, for example by bonding to the body 42, being arranged in sleeves provided in a textile bonded to the body 42, or by being arranged in grooves 44 formed in a plate 46 secured to the body 42 removably or not. The plate 46 may be made in one piece or in several parts. This plate 46 is preferably made of a flexible material to be rolled. For example, it can be made of closed cell foam for example a foam marketed under the plastazote® brand. This plate 46 can be glued against the body 42. In FIGS. 2A to 2F, various steps of the production method are shown. To clearly show the interaction between the skin 14 and the core 12, the cells of the core 12 have been exaggeratedly enlarged.
Au préalable, on réalise un pain en mousse souple aux formes de la planche de glisse à réaliser, à l'épaisseur de la peau étanche près. Cette mise en forme du noyau peut s'effectuer par découpage ou par coulage dans un moule d'une matière liquide ou pâteuse expansible.Beforehand, a flexible foam roll is produced in the form of the gliding board to be made, to the thickness of the skin near the watertightness. This shaping of the core can be performed by cutting or pouring into a mold of an expandable liquid or pasty material.
En suivant, on applique sur le noyau en mousse souple la peau étanche. Cette application peut se faire par étalement d'au moins une couche de la matière de la peau étanche sur toute la surface du noyau, par pulvérisation, par estampage ou par trempage.Following, is applied on the flexible foam core waterproof skin. This application may be by spreading at least one layer of the material of the sealed skin over the entire surface of the core, by spraying, stamping or dipping.
Ainsi, sur les figures 2A à 2E, on a représenté l'imprégnation progressive des alvéoles superficielles du noyau par la matière sous forme liquide ou pâteuse de la peau étanche. Lorsque les alvéoles superficielles sont obturées par ladite matière, cette dernière reste en surface de manière à former la peau étanche comme illustré sur la figure 2F.Thus, in FIGS. 2A to 2E, there is shown the progressive impregnation of the surface cells of the core with the material in liquid or pasty form of the sealed skin. When the surface cells are closed by said material, the latter remains on the surface so as to form the sealed skin as illustrated in FIG. 2F.
Selon une autre variante illustrée sur les figures SA à 3C, un textile formant renfort 16 est noyé dans la peau étanche 14. Les figures 3A et 3B résument les étapes illustrées sur les figures 2A à 2F. Après la formation d'une partie de la peau étanche 14 à la surface du noyau 12, on dépose le textile que l'on recouvre par la suite d'au moins une nouvelle couche de matière formant la peau étanche afin de le noyer. La zone 36 correspond à la zone d'accroché de la peau étanche avec le noyau. Selon un autre procédé, la matière initialement liquide ou pâteuse de la peau étanche est préalablement appliquée contre les parois d'un moule aux formes de la planche de glisse à réaliser. Avant durcissement, la matière formant le noyau est injectée dans le moule. Lors de l'expansion de la matière formant le noyau, cette dernière vient au contact de la matière de la peau étanche qui sous forme liquide encore, s'infiltre au niveau des alvéoles superficielles du noyau.According to another variant illustrated in Figures SA to 3C, a reinforcing textile 16 is embedded in the sealed skin 14. Figures 3A and 3B summarize the steps illustrated in Figures 2A to 2F. After the formation of a portion of the sealed skin 14 on the surface of the core 12 is deposited the textile which is subsequently covered with at least one new layer of material forming the sealed skin to walnut. Area 36 corresponds to the area of hung skin tight with the core. According to another method, the initially liquid or pasty material of the sealed skin is previously applied against the walls of a mold to the shapes of the gliding board to be produced. Before hardening, the material forming the core is injected into the mold. During the expansion of the material forming the core, the latter comes into contact with the material of the sealed skin which in liquid form still infiltrates at the level of the superficial cells of the core.
En variante, avant de refermer le moule, on noie dans la matière de la peau étanche un renfort 16 sous forme d'un textile ou similaire. Selon un autre mode de réalisation, un renfort 18 à mailles larges est disposé contre les parois d'un moule aux formes de la planche de glisse à réaliser à l'épaisseur de la peau étanche près, comme illustré sur la figure 4A. Après fermeture du moule, on injecte la matière expansible du noyau comme illustré sur la figure 4B. Après durcissement, on démoule de manière à obtenir un pain renforcé en mousse souple, comme illustré sur la figure AC. En suivant, comme précédemment, on applique sur toute la surface la matière liquide ou pâteuse de la peau étanche, comme illustré sur la figure 4D. après durcissement de la peau et injection de la quantité de gaz requise, on obtient une planche de glisse rigide à partir de matériaux souples. Cette configuration permet d'obtenir une accroche meilleure dans la mesure où l'on peut choisir pour le renfort 18 un matériau permettant une plus forte cohésion avec la matière de la peau étanche. Selon un autre mode de réalisation, la matière initialement liquide ou pâteuse de la peau étanche est préalablement appliquée contre les parois d'un moule aux formes de la planche de glisse à réaliser, comme illustré sur la figure 5A. Avant durcissement, on dépose un renfort 18 à mailles larges qui pénètre partiellement dans la matière de la peau comme illustré sur la figure 5B. En suivant, on injecte dans le moule une matière expansible formant le noyau comme illustré sur la figure 5C. La matière du noyau s'infiltre entre les mailles larges du renfort 18 pour venir au contact de la matière de la peau qui s'infiltre alors dans les alvéoles superficielles du noyau. Après durcissement, on obtient une planche de glisse avec une rigidité renforcée, l'enceinte formée par la peau pouvant résister à des pressions plus importantes sans se délaminer, grâce à la présence du renfort 18 en partie dans la peau étanche et dans le noyau comme illustré sur la figure 5b. Sur les figures 6A à 6b, on a représenté une variante proche de celle décrite par les figures 5A à 5D. Dans ce cas, on place au niveau des surfaces du moule un complexe comprenant un renfort 18 partiellement noyé dans une peau étanche 14 déjà durcie. En suivant, on injecte la matière expansible du noyau dans le moule comme illustré sur la figure 6C. Contrairement à la variante précédente, la liaison entre la peau étanche 14 et le noyau 12 est assurée exclusivement par le renfort 18.Alternatively, before closing the mold, embedding in the waterproof skin material a reinforcement 16 in the form of a textile or the like. According to another embodiment, a wide-meshed reinforcement 18 is disposed against the walls of a mold in the form of the gliding board to be made to the thickness of the near skin, as shown in FIG. 4A. After closing the mold, the expandable material of the core is injected as shown in FIG. 4B. After hardening, it is demolded so as to obtain a flexible foam-reinforced bread, as illustrated in FIG. Following, as before, is applied over the entire surface of the liquid or pasty material of the sealed skin, as shown in Figure 4D. after hardening of the skin and injection of the required quantity of gas, a rigid gliding board is obtained from flexible materials. This configuration provides a better grip to the extent that we can choose for reinforcement 18 a material for a stronger cohesion with the material of the waterproof skin. According to another embodiment, the initially liquid or pasty material of the sealed skin is previously applied against the walls of a mold to the shapes of the gliding board to be produced, as shown in Figure 5A. Prior to curing, a wide mesh reinforcement 18 is applied which partially penetrates into the skin material as shown in FIG. 5B. Following, is injected into the mold an expandable material forming the core as shown in Figure 5C. The material of the core infiltrates between the wide mesh of the reinforcement 18 to come into contact with the material of the skin, which then infiltrates into the surface of the pit. After curing, a gliding board is obtained with a reinforced rigidity, the enclosure formed by the skin being able to withstand greater pressures without being delaminated, thanks to the presence of the reinforcement 18 partly in the tight skin and in the core as illustrated in Figure 5b. FIGS. 6A to 6B show a variant close to that described in FIGS. 5A to 5D. In this case, a complex is placed at the surfaces of the mold comprising a reinforcement 18 partially embedded in a tight skin 14 already hardened. Following, the expandable material of the core is injected into the mold as shown in FIG. 6C. Unlike the previous variant, the connection between the sealed skin 14 and the core 12 is provided exclusively by the reinforcement 18.
Selon une autre variante, une planche de glisse selon l'invention pourrait inclure un renfort 16 sous forme textile noyé dans la peau étanche et un renfort 18 à mailles larges au niveau de l'interface entre la peau étanche et le noyau.According to another variant, a gliding board according to the invention could include a reinforcement 16 in textile form embedded in the waterproof skin and a reinforcement 18 with wide mesh at the interface between the sealed skin and the core.
Des éléments tels que des dérives ou des moyens d'ancrage d'accessoires peuvent être rapportés sur la planche de glisse de l'invention. A cet effet, des évidements sont prévus au niveau de la surface de la planche de glisse dans lesquels sont partiellement introduits et collés les éléments ajoutés. En variante, comme illustré sur les figures 10 et 11, la planche peut comprendre des dérives 48 en plastique avec une plaque perpendiculaire, contre collée. Dans ce cas, les éléments rapportés sont contre collés sur la surface de la planche, aucun évidement n'étant prévu. Selon les variantes, ces évidements sont découpés dans le noyau en mousse souple avant qu'il ne soit revêtu par la peau étanche ou prévu au niveau de la forme du moule utilisé pour les variantes de réalisation décrites sur les figures 4A à 4D, 5A à 5D et 6A à 6D.Elements such as fins or means for anchoring accessories can be reported on the gliding board of the invention. For this purpose, recesses are provided at the surface of the gliding board in which are partially introduced and glued the added elements. Alternatively, as illustrated in Figures 10 and 11, the board may comprise plastic fins 48 with a perpendicular plate, against glued. In this case, the inserts are against glued on the surface of the board, no recess being provided. According to the variants, these recesses are cut in the flexible foam core before it is covered by the tight skin or provided in the shape of the mold used for the embodiments described in FIGS. 4A to 4D, 5A to 5D and 6A to 6D.
En effet, il convient que la peau étanche recouvre la totalité du noyau en mousse afin de former une cavité étanche contenant le gaz sous pression. Comme illustré sur la figure 9, un raidisseur 20 peut être relié à la planche comme un autre élément. Dans ce cas, la face inférieure de la planche ou carène comprend un chenal longitudinal 36 dans lequel est susceptible de se loger un raidisseur 20. Selon les variantes, les extrémités du chenal peuvent être débouchantes ou non. Comme illustré sur la figure 9, ce chenal est creusé ou formé dans le noyau en mousse souple et revêtu d'une peau étanche pour que la surface du noyau soit entièrement revêtue par ladite peau étanche. Le raidisseur est maintenu dans ce logement par tous moyens appropriés, par exemple par collage ou en utilisant un textile 38 collé à la peau étanche de part et d'autre dudit chenal. Indeed, it is appropriate that the sealed skin covers the entire foam core to form a sealed cavity containing the gas under pressure. As illustrated in FIG. 9, a stiffener 20 may be connected to the board as another element. In this case, the underside of the board or hull comprises a longitudinal channel 36 in which a stiffener 20 may be housed. According to the variants, the ends of the channel may be open or not. As illustrated in FIG. 9, this channel is hollowed out or formed in the flexible foam core and covered with a tight skin so that the surface of the core is entirely covered by said sealed skin. The stiffener is maintained in this housing by any appropriate means, for example by gluing or by using a textile 38 bonded to the sealed skin on either side of said channel.

Claims

REVENDICATIONS
1. Procédé de fabrication d'une planche de glisse rigide caractérisé en ce qu'il consiste à recouvrir la surface extérieure d'un noyau (12) en matériau alvéolaire compressible ayant la forme de ladite planche a\/ec un revêtement formant une peau étanche (14) souple, ledit revêtement étant en une matière initialement liquide ou pâteuse pour infiltrer directement ou non les alvéoles superficielles dudit noyau (12), puis durcie afin d'obtenir une liaison surfacique de ladite peau souple avec ledit noyau souple, et à injecter un gaz sous pression à l'intérieur de la peau étanche et souple afin de conférer sa rigidité à la planche réalisée à partir d'éléments souples. 1. A method of manufacturing a rigid gliding board characterized in that it consists in covering the outer surface of a core (12) of compressible cellular material having the shape of said board with a skin-forming coating flexible seal (14), said coating being made of an initially liquid or pasty material for infiltrating directly or not the surface cells of said core (12), then cured in order to obtain a surface bonding of said flexible skin with said flexible core, and inject a pressurized gas into the sealed and flexible skin in order to impart rigidity to the board made from flexible elements.
2. Procédé de fabrication d'une planche de glisse rigide selon la revendication 1, caractérisé en ce qu'il consiste à inclure dans la peau étanche (14) souple un renfort (16) plan sous forme de fibres tissées ou non tissées, naturelles ou synthétiques, pour limiter l'élasticité de ladite peau étanche.2. A method of manufacturing a rigid gliding board according to claim 1, characterized in that it consists in including in the waterproof skin (14) a flexible reinforcement (16) plan in the form of woven or non-woven fibers, natural or synthetic, to limit the elasticity of said waterproof skin.
3. Procédé de fabrication d'une planche de glisse rigide selon la revendication 1 ou 2, caractérisé en ce qu'il consiste à prévoir au niveau de l'interface entre la peau étanche souple (14) et le noyau (12) un renfort (18) à mailles larges sous forme d'un tissé en trois dimensions ou d'une mousse ultra réticulée souple afin de renforcer leurs liaisons.3. A method of manufacturing a rigid gliding board according to claim 1 or 2, characterized in that it consists in providing at the interface between the flexible waterproof skin (14) and the core (12) a reinforcement (18) wide mesh in the form of a woven three-dimensional or a flexible ultra-crosslinked foam to strengthen their bonds.
4. Procédé de fabrication d'une planche de glisse rigide selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il consiste à prévoir une soupape permettant de libérer le gaz contenu à l'intérieur de ladite peau étanche souple (14) vers l'extérieur lorsque la pression dépasse un certain seuil.4. A method of manufacturing a rigid gliding board according to any one of the preceding claims, characterized in that it consists in providing a valve for releasing the gas contained inside said flexible waterproof skin (14). outward when the pressure exceeds a certain threshold.
5. Procédé de fabrication d'une planche de glisse rigide selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il consiste à prévoir au moins un raidisseur (20) disposé dans un plan médian vertical longitudinal.5. A method of manufacturing a rigid gliding board according to any one of the preceding claims, characterized in that it consists in provide at least one stiffener (20) disposed in a longitudinal vertical median plane.
6. Planche de glisse obtenue à partir du procédé selon l'une quelconque des revendications précédentes. 6. Gliding board obtained from the method according to any one of the preceding claims.
PCT/FR2007/001257 2006-07-27 2007-07-20 Method of making a sliding board and resulting sliding board WO2008012421A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0653151A FR2904234B1 (en) 2006-07-27 2006-07-27 METHOD OF MANUFACTURING A SLIDING BOARD AND SLIDING BOARD THUS OBTAINED
FR0653151 2006-07-27

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WO2008012421A2 true WO2008012421A2 (en) 2008-01-31
WO2008012421A3 WO2008012421A3 (en) 2008-03-13

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FR (1) FR2904234B1 (en)
WO (1) WO2008012421A2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2336954A1 (en) * 1975-12-30 1977-07-29 Labat Jacques Strengthened surf board mfr. - has internal main and side ribbing for laminated fibre halves with edges joined longitudinally in mould
FR2662365A1 (en) * 1990-05-23 1991-11-29 Decathlon Production Lightened structure, particularly for sports articles
EP0575130A1 (en) * 1992-06-15 1993-12-22 SAJIC, Peter James A float board

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2336954A1 (en) * 1975-12-30 1977-07-29 Labat Jacques Strengthened surf board mfr. - has internal main and side ribbing for laminated fibre halves with edges joined longitudinally in mould
FR2662365A1 (en) * 1990-05-23 1991-11-29 Decathlon Production Lightened structure, particularly for sports articles
EP0575130A1 (en) * 1992-06-15 1993-12-22 SAJIC, Peter James A float board

Also Published As

Publication number Publication date
WO2008012421A3 (en) 2008-03-13
FR2904234A1 (en) 2008-02-01
FR2904234B1 (en) 2010-08-13

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