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EP0064937B1 - Méthode et fabrication de planches à voile ou de surf - Google Patents

Méthode et fabrication de planches à voile ou de surf Download PDF

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Publication number
EP0064937B1
EP0064937B1 EP82710028A EP82710028A EP0064937B1 EP 0064937 B1 EP0064937 B1 EP 0064937B1 EP 82710028 A EP82710028 A EP 82710028A EP 82710028 A EP82710028 A EP 82710028A EP 0064937 B1 EP0064937 B1 EP 0064937B1
Authority
EP
European Patent Office
Prior art keywords
core element
foam core
sail
threadwork
matting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP82710028A
Other languages
German (de)
English (en)
Other versions
EP0064937A3 (en
EP0064937A2 (fr
Inventor
Wolfgang Frank
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.)
Mistral Windsurfing AG
Original Assignee
Mistral Windsurfing AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6131992&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0064937(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Mistral Windsurfing AG filed Critical Mistral Windsurfing AG
Priority to AT82710028T priority Critical patent/ATE18880T1/de
Publication of EP0064937A2 publication Critical patent/EP0064937A2/fr
Publication of EP0064937A3 publication Critical patent/EP0064937A3/de
Application granted granted Critical
Publication of EP0064937B1 publication Critical patent/EP0064937B1/fr
Expired legal-status Critical Current

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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
    • B63B32/50—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
    • B63B32/40—Twintip boards; Wakeboards; Surfboards; Windsurfing boards; Paddle boards, e.g. SUP boards; Accessories specially adapted therefor

Definitions

  • the invention relates to methods for the production of sailing or surfboards, in which a foam core element is inserted between two shell parts and at least regionally interposed mat between two shell parts and the shell parts are joined together.
  • the invention relates to a sail or surfboard made of a shell, a foam core element and an intermediate layer provided at least in some areas between the shell and the foam core element.
  • the two-shell construction is generally used, in which a core made of expanding polystyrene (EPS core) is inserted between two deep-drawn, cooled shell parts before the shell parts are glued together.
  • EPS core expanding polystyrene
  • a foaming adhesive is applied to the EPS core before it is inserted. This is, for example, a foaming adhesive based on polyurethane or epoxy. It also serves to compensate for tolerances between the core and the shell.
  • the disadvantage of the known method is that the thickness of the shell parts and the density of the EPS core must be chosen to be relatively high in order to achieve sufficient pressure resistance and rigidity over a long service life. In addition, there is the disadvantage that it is difficult to bond the two shell parts to one another with resistance.
  • a sailing board which consists of two half-shells made of a plastic material, to which a base layer made of rigid foam is first applied. After gluing these two shells made in this way, the cavity is filled with light foam.
  • the depot mat used according to this known method is a mat which consists of a fabric made of glass fiber and a fleece applied thereon, this mat having a total thickness of approximately 1 mm.
  • the mat itself has no compressive strength or rigidity of its own. Only when the adhesive has hardened is the outer shell reinforced and the desired adhesion between the outer shell and the foam core part achieved. When the adhesive has hardened, there is practically a correspondingly thicker outer shell, which is perfectly glued to the foam core.
  • CH-PS 597 032 discloses a method for producing a sailing board, in which a mold is first lined with at least one layer of glass fibers and plastic and then a glass fiber mat is inserted into the mold in the area of the greatest extent. On this mat and the part of the first layer not covered by it, a layer of a mixture of glass fibers and plastic, e.g. sprayed onto a polyester resin and hardener. Then foam core elements are introduced into the mold, the top of which is then sprayed with the same mixture of glass fibers and plastic. The protruding edge of the glass fiber mat is then placed on the top of the foam core elements. The mold is then closed and its interior evacuated. This known method also produces a relatively thick skin which surrounds the foam core elements and which entails a high board weight.
  • the so-called single-shell construction is more favorable, in which the EPS core is already inserted between the shell parts, while the shell material is still heated and therefore plastic, so that the deep-drawn shell parts are welded to one another and, if appropriate, also to the core material when they are subsequently joined together .
  • this requires a high dimensional accuracy of the EPS core, which, in addition to high manufacturing costs, is contrary to the time shrinkage behavior of the expanding polystyrene.
  • the EPS core must also be handled very carefully before it is inserted between the shell parts, since any damage to the core affects the connection between the core and the shell. In addition, there is the problem of ventilation when assembling the shell parts.
  • the invention has for its object to improve a method according to the preamble of claims 1 and 2 so that a light board body with high strength and long life can be produced with it. Furthermore, it is an object of the invention to improve a sailing or surfboard according to the preamble of claim 4 in such a way that it is characterized by low weight, high strength and durability.
  • a support layer is created at least in regions between the foam core and the shell, which fixes the foam core element spatially exactly and eliminates tolerance problems of the foam core element due to its own elasticity.
  • a compensating material in the form of a thin depot mat is used, but a part or the entire outer zone of the foam core is replaced by a mat in the form of a knitted thread.
  • a three-dimensional support structure is created, the knitted thread being a mat made from a large number of stiff threads which penetrate the mat volume irregularly.
  • the mat therefore forms a fixed volume, which for example can have a thickness of 1.5 cm, although the mat is flexible to the extent that it can be adapted to the curvature of the shell parts, but at the same time has its own considerable pressure stability with an extremely low weight . This pressure stability already exists before the mat is foamed.
  • the thread-reinforced edge foam zone formed by the foaming serves at the same time as a secure binding agent between the shell and the foam core element and gives the core excellent compressive strength, so that it absorbs loads that are transmitted through the shell to the inside. It becomes possible to use extraordinarily light foam (up to 12 gr / Ltr) for the foam core element, without the board's strength being impaired, so that overall a very low board weight results.
  • a foam core element 1 is produced in accordance with the shape of the sail or surfboard to be produced. This does not already have the nominal size of the foam core, but it is manufactured with an undersize of, for example, 15 mm. Depending on the requirements placed on the sailboard, the foam core element is manufactured all around with this undersize or only certain outside surface areas are given this undersize. For example, the undersize can be limited to the outer surface area of the foam core element, which corresponds to the upper surface of the sail board or only the footprint of the sail board. Expanding polystyrene or another lightweight packing material is particularly suitable as the material for the foam core element, specifically with a density of 12 to 15 gr / liter.
  • the undersized surface areas of the foam core element 1 are then covered with a knitted thread 2 so that the resulting composite element receives the target contour of the core.
  • the knitted thread 2 is expediently needled onto the foam core element. It has the shape of a mat with a thickness that corresponds to the undersize, for example 15 mm.
  • the knitted thread consists of relatively stiff plastic threads which run through the mat area in an irregular course and are welded together at points of mutual contact.
  • it is polypropylene threads.
  • the mat is so flexible that it can be needled onto curved surfaces, while on the other hand it is relatively hard perpendicular to the plane of the mat and can absorb and transmit appropriate loads. Flexibility and hardness naturally depend on the rigidity and number of threads per unit volume.
  • a knitted fabric made of plastic threads one made of metal wires, such as aluminum wires, or even a knitted fabric made of for example, coconut fibers are used.
  • the foam core element 1 provided with the knitted fabric 2 is then inserted between two deep-drawn shell parts 3 and 4 of the sailing board and the shell parts are then joined together against one another via the foam core element.
  • the two-shell construction can be used, in which the two shell parts 3, 4 are glued to one another at their butt joint, or the single-shell construction, in which the foam core element 1 is inserted between the shell parts 3, 4 while the shell parts 3, 4 are still heated and thus plastic, and the shell parts then be welded together when joining.
  • Thermoplastic or thermosetting plastics can be used as the material for the shell parts.
  • the manufacturing process according to a first variant of the method is ended.
  • the knitted thread 2 connects the shell parts 3, 4 to the foam core element 1. If the shell parts are still in a plastic state when they are joined together, welding can occur between the shell parts and the knitted thread, while the knitted thread, on the other hand, penetrates slightly into the foam core element 1 and there is mechanically anchored next to the needling.
  • a similar connection between the shell parts and the knitted fabric 2 can be achieved by previously coating the shell parts with adhesive.
  • a second variant of the method is to foam the cavity formed by the undersize of the foam core element, in which the knitted yarn 2 is located. This can be done by applying foaming adhesive to the foam core element 1 over the undersize area of the foam core element 1. This foaming adhesive based on polyurethane or epoxy then completely fills the cavity created when the shell parts are joined with foam 5.
  • An advantageous embodiment of the method is to foam the cavity in which the knitted thread is located after the shell parts have been joined by injecting a foaming substance, in particular polyurethane or epoxy foam 5. The foaming substance wets the knitted thread and fills all cavities, in particular also damaged areas of the foam core element 1.
  • This foaming results in an intermediate layer between the shell and the foam core element in the undersize areas of foam reinforced by the thread knit, which has excellent compressive strength and provides a secure connection between the shell and the foam core element, which is equivalent to gluing.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Laminated Bodies (AREA)
  • Reinforced Plastic Materials (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)

Claims (12)

1. Procédé de fabrication de planche à voile ou de surf, dans lequel un élément de noyau en mousse est introduit, avec interposition, au moins dans certaines zones, d'un mât, entre deux éléments de coquille et les deux éléments de coquille sont assemblés, caractérisé par le fait que pour obtenir le contour voulu du noyau, la superficie extérieure de l'élément de noyau en mousse est pourvue, avant l'introduction, du mât formé par un réseau de fils, obtenu à partir d'une pluralité de fils rigides parcourant de manière irrégulière le volume du mât, et en ce qu'une substance moussante est injectée dans l'espace creux obtenu, après assemblage des éléments de coquille, entre ceux-ci et l'élément de noyau en mousse, dans lequel se trouve le réseau de fil.
2. Procédé de fabrication de planche à voile ou de surf dans lequel un élément de noyau en mousse est introduit, avec interposition, au moins dans certaines zones, d'un mât entre deux éléments de coquille et les deux éléments de coquille sont assemblés, caractérisé par le fait que pour obtenir le contour voulu du noyau, la surperficie extérieure de l'élément de noyau en mousse est pourvue, avant l'introduction, du mât formé par un réseau de fils obtenu à partir d'une pluralité de fils rigides parcourant d'une manière irrégulière le volume du mât, et en ce que la zone de la superficie extérieure de l'élément de noyau en mousse pourvue du réseau de fils est enduite, avant l'introduction, d'une masse adhésive qui mousse après l'assemblage des éléments de coquille.
3. Procédé selon la revendication 1 ou 2, caractérisé par le fait que le réseau de fils est épinglé sur l'élément de noyau en mousse.
4. Planche à voile ou de surf constituée par une coquille, un élément de noyau en mousse, et une couche intermédiaire disposée au moins dans certaines zones entre la coquille et l'élément de noyau en mousse, caractérisée par le fait que la couche intermédiaire est constituée par un mât formé par un réseau de fils (2) composé d'une pluralité de fils rigides parcourant de manière irrégulière le volume du mât et que l'espace contenant le réseau de fils (2), entre la coquille (3, 4) et l'élément de noyau en mousse (1) est rempli de mousse par une substance moussante (5).
5. Planche à voile ou de surf selon la revendication 4, caractérisée par le fait que l'élément de noyau en mousse (1) est pourvu du réseau de fils (2) noyé dans la mousse dans la zone de toute la surface supérieure de la planche.
6. Planche à voile ou de surf selon la revendication 4, caractérisée par le fait que l'élément de noyau en mousse (1) est pourvu du réseau de fils (2) noyé dans la mousse, dans la zone de surface où se tient le planchiste.
7. Planche à voile ou de surf selon la revendication 4, caractérisée par le fait que l'élément de noyau en mousse (1) est pourvu sur tout son pourtour du réseau de fils (2) noyé dans la mousse.
8. Planche à voile ou de surf selon l'une des revendications 4 à 7, caractérisée par le fait qu'on utilise pour le réseau de fils (2) des fils en matière synthétique thermoplastique comme par exemple du polypropylène, qui sont soudés entre eux aux endroits où ils sont en contact mutuel.
9. Planche à voile ou de surf selon l'une des revendications 4 à 7, caractérisée par le fait qu'on utilise des fils métalliques, par exemple en aluminium pour le réseau de fils (2).
10. Planche à voile ou de surf selon l'une des revendications 4 à 9, caractérisée par le fait que le mât en réseau de fils a une épaisseur de 15 mm.
11. Planche à voile ou de surf selon l'une des revendications 4 à 10, caractérisée par le fait que la substance moussante est une mousse de polyuréthane ou d'une mousse époxy.
12. Planche à voile ou de surf selon l'une des revendications 4 à 10, caractérisée par le fait que la substance moussante est une colle moussante à base de polyuréthane ou d'époxy.
EP82710028A 1981-05-11 1982-05-11 Méthode et fabrication de planches à voile ou de surf Expired EP0064937B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82710028T ATE18880T1 (de) 1981-05-11 1982-05-11 Verfahren zur herstellung von segel- bzw. surfbrettern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3118631 1981-05-11
DE3118631A DE3118631C2 (de) 1981-05-11 1981-05-11 Verfahren zur Herstellung von Segel- bzw. Wellenreitbrettern sowie Segel- bzw. Wellenreitbrett

Publications (3)

Publication Number Publication Date
EP0064937A2 EP0064937A2 (fr) 1982-11-17
EP0064937A3 EP0064937A3 (en) 1983-01-05
EP0064937B1 true EP0064937B1 (fr) 1986-04-02

Family

ID=6131992

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82710028A Expired EP0064937B1 (fr) 1981-05-11 1982-05-11 Méthode et fabrication de planches à voile ou de surf

Country Status (6)

Country Link
EP (1) EP0064937B1 (fr)
JP (1) JPS58500691A (fr)
AT (1) ATE18880T1 (fr)
AU (1) AU556390B2 (fr)
DE (1) DE3118631C2 (fr)
WO (1) WO1982004023A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3202581A1 (de) * 1982-01-27 1983-08-11 Fritzmeier AG, 5036 Oberentfelden Segelbrett
EP0138842A4 (fr) * 1983-02-21 1987-06-25 Barup Pty Ltd Systeme de moulage de produits mousses de polyurethane.
DE3329230C2 (de) * 1983-08-12 1986-07-24 Fritzmeier AG, Oberentfelden Verfahren zur Herstellung eines Segel- bzw. Wellenreitbretts
DE3447967A1 (de) * 1984-02-24 1985-11-14 Binder, geb. Möschl, Birgit, 7100 Heilbronn Segelbrett
DE3406689C2 (de) 1984-02-24 1986-01-23 Binder, geb. Möschl, Birgit, 7100 Heilbronn Verfahren zum Herstellen eines Segelbrettes sowie nach einem solchen Verfahren hergestelltes Segelbrett
DE3512267A1 (de) * 1985-04-03 1986-10-16 Klepper Beteiligungs Gmbh & Co Bootsbau Kg, 8200 Rosenheim Segelbrettkoerper und verfahren zu seiner herstellung
DE3537703C1 (de) * 1985-10-23 1992-09-24 Taa Tech Administration Ag Verbundkoerper,insbesondere Segel- oder Wellenreitbrett,sowie Verfahren zur Herstellung desselben
DE3701953A1 (de) * 1987-01-23 1988-08-04 Klepper Beteiligungs Gmbh & Co Bootskoerper und verfahren zu dessen herstellung
AT392646B (de) * 1989-05-18 1991-05-10 Isovolta Verfahren zum herstellen eines als verstaerkungseinlage bestimmten prepregs sowie verwendung dieses prepregs als verstaerkungseinlage
FR2744093A1 (fr) * 1996-01-31 1997-08-01 Largilliere Remy Flotteur destine a une utilisation de loisir et sportive
DE19632516C1 (de) * 1996-08-13 1997-11-13 Schuetz Werke Gmbh Co Kg Formwerkzeug und Verfahren zur Herstellung von Surfbrettern
DE69939921D1 (de) 1998-06-08 2009-01-02 Huntsman Adv Mat Switzerland Verwendung von expandierbaren Epoxysystemen für Sperrmaterialen in flüssigkeitsgefüllten Hochspannungstransformatoren
DE10002185C1 (de) * 2000-01-19 2001-06-07 F2 Internat Ges M B H Verbundkörper, insbesondere Segel- bzw. Wellenreitbrett
FR2886916B1 (fr) 2005-06-09 2007-10-19 Salomon Sa Flotteur de glisse comportant un pont a strucure sandwich a ame elastique
AU2011369470A1 (en) * 2011-05-31 2014-01-09 CHOTIKAPANICH, Danu Composite materials and articles comprising the same
JP6784493B2 (ja) * 2016-01-25 2020-11-11 株式会社Ｓｕｂａｒｕ ロアアーム

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7603417U1 (fr) * 1900-01-01 Peters, Peter, 8260 Muehldorf
DE1061507B (de) * 1953-07-06 1959-07-16 Bayer Ag Verfahren zur Herstellung von Verbundkonstruktionen aus Deckschichten mit Schaumstoff
DE940787C (de) * 1954-09-03 1956-03-29 Bayer Ag Schwimmkoerper aus Polyurethan-Schaumstoffen
DE1268362B (de) * 1956-01-18 1968-05-16 Armour Res Foundation Of Jllin Durch Metallfaeden verstaerkte Kunststoffe
FR1435581A (fr) * 1965-06-02 1966-04-15 Procédé de construction de caissons et notamment d'embarcations en matière plastique armée
DE2264415B2 (de) * 1972-01-12 1978-01-26 Ausscheidung aus 22 01 319 Klepper-Werke, 8200 Rosenheim Bootskoerper und bootsdeck aus faserverstaerktem kunststoff fuer ein segelboot
JPS565171B2 (fr) * 1973-12-12 1981-02-03
DE2512152A1 (de) * 1975-03-20 1976-10-07 Graf Hagenburg Gmbh Verfahren zur herstellung von koerpern aus glasfaserverstaerktem kunststoff mit schaumstoffkern
CH597032A5 (en) * 1975-09-19 1978-03-31 Scobalit Ag Wind surfer with centre board box, hard foam core and casing
CH612590A5 (en) * 1976-01-05 1979-08-15 Staridee Float of a wind surfer and process for its production
JPS53102392A (en) * 1977-02-18 1978-09-06 Yamaha Motor Co Ltd Fiberrreinforced plastic structure
DE2928579C2 (de) * 1979-07-14 1983-03-17 Shark Wassersportgeräte GmbH, 2830 Bassum Segelbrettrumpf

Also Published As

Publication number Publication date
DE3118631A1 (de) 1982-11-25
JPS58500691A (ja) 1983-05-06
JPS6344392B2 (fr) 1988-09-05
AU8393582A (en) 1982-12-07
ATE18880T1 (de) 1986-04-15
EP0064937A3 (en) 1983-01-05
EP0064937A2 (fr) 1982-11-17
WO1982004023A1 (fr) 1982-11-25
DE3118631C2 (de) 1983-11-17
AU556390B2 (en) 1986-10-30

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