EP0116099A1 - Special plastic foam form for manufacturing a surfboard by the filament winding method - Google Patents

Special plastic foam form for manufacturing a surfboard by the filament winding method Download PDF

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Publication number
EP0116099A1
EP0116099A1 EP82450018A EP82450018A EP0116099A1 EP 0116099 A1 EP0116099 A1 EP 0116099A1 EP 82450018 A EP82450018 A EP 82450018A EP 82450018 A EP82450018 A EP 82450018A EP 0116099 A1 EP0116099 A1 EP 0116099A1
Authority
EP
European Patent Office
Prior art keywords
machine
resin
filament winding
plastic foam
manufacturing
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.)
Withdrawn
Application number
EP82450018A
Other languages
German (de)
French (fr)
Inventor
Jean Alphonse David
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP82450018A priority Critical patent/EP0116099A1/en
Publication of EP0116099A1 publication Critical patent/EP0116099A1/en
Withdrawn legal-status Critical Current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 present invention relates to the production of a special mandrel made of plastic foam material for the production of windsurfing by the filament winding process.
  • thermoforming thermoforming
  • rotational molding blow molding
  • blow molding for thermoplastics
  • thermosets fiberglass laminate impregnated with organic resins (polyester or epoxy).
  • the proportion of resin fiber is approximately I for 2 to 2.5, the resin's acea makes the board fragile to shock and weighs it down unnecessarily, not to mention the important manual work.
  • the present invention aims to remedy these drawbacks, the filamentary winding solves these problems, but requires a special mandrel allowing its rotational drive smoothly and without excessive longitudinal bending.
  • the jumping board in particular will benefit from the advantages of this invention, solidity, great resistance to impact in waves, lightness, qualities essential for jumping.
  • the plastic foam mandrel, polystyrene for example is composed of three longitudinal elements, two identical parts by symmetry representing the shape of the desired board with placed between the two parts a central element whose width is about four centimeters to allow incorporation daggerboard boxes, central fin and mast wells.
  • the blanks of these three elements receive a strip of glass fabrics impregnated with epoxy resin for example and are joined by gluing by pressing the assembly together: these are the stiffeners.
  • sleeves Before gluing, sleeves will have been positioned to receive the drive shafts and machine fixings. A longitudinal recess in the central part of the mandrel will be made to allow the penetration of these shafts and their nesting in the sleeves.
  • the trees metal tubes of square shape for example
  • the trees being the male parts fit into the sleeves (rigid epoxy foam for example) having a recess of shape and section identical to the trees.
  • the sharp edges of the mandrel are protected by a strip of resin-impregnated glass fabrics to prevent deformation during winding. This mandrel thus produced is placed on the winding machine.

Abstract

The form, made for example from polystyrene foam, is composed of three longitudinal elements which, when joined together, have the final shape of the board. The inner flanks of these elements receive a band of resin-impregnated fabric and are joined together by adhesive bonding. Sleeves are incorporated into the central part before bonding in order to receive the shafts for driving and fixing to the machine. These two independent shafts are connected to each end of the machine by universal joints. The sharp edges of the form are protected by a band of resin-impregnated fabric. The following operations of winding, oven drying and finishing, are identical to the current operations carried out using filament winding.

Description

La présente invention concerne la réalisation d'un mandrin spécial en matériau mousse de plastique pour la réalisation de planche à voile par le procédé d'enroulement filament a ire.The present invention relates to the production of a special mandrel made of plastic foam material for the production of windsurfing by the filament winding process.

Actuellement, existent différents procédés de fabrication de corps de planche à voile le thermoformage, le rotomoulage, l'extrusion souflage pour les thermoplastiques, et, pour les thermodurcissables, le stratifié fibre verre imprégné de résines organiques (polyesther ou époxy).Currently, there are different methods of manufacturing windsurfing bodies, thermoforming, rotational molding, blow molding for thermoplastics, and, for thermosets, fiberglass laminate impregnated with organic resins (polyester or epoxy).

L'inconvénient majeur de l'ensemble de ces procédés, c'est qu'il est difficile de concilier légereté et solidité.The major drawback of all of these methods is that it is difficult to reconcile lightness and solidity.

En ee qui concerne les stratifiés réalisés jusqu'à ce jour pour les corps de planche à voile, soit au contact, injection de résine sous vide, ou autres systèmes, la proportion fibre résine est d'environ I pour 2 à 2,5, l'eacés de résine rend la planche fragile au choc et alourdit celle-ci inutilement, sans parler du travail manuel important.As regards the laminates produced to date for windsurfing bodies, either in contact, injection of resin under vacuum, or other systems, the proportion of resin fiber is approximately I for 2 to 2.5, the resin's acea makes the board fragile to shock and weighs it down unnecessarily, not to mention the important manual work.

La présente invention a pour but de remédier à ces inconvénients, l'enrouelment filamentaire résoud ces problèmes, mais nécessite un mandrin spécial permettant son entrainement de rotation sans à coup et sans flexion longitudinale excessive.The present invention aims to remedy these drawbacks, the filamentary winding solves these problems, but requires a special mandrel allowing its rotational drive smoothly and without excessive longitudinal bending.

L'intérieur d'une planche à voile est injecté de muusse, dans le cas de l'enroulement filamentaire, cette mousse sert de mandrin, sur lequel on réalise l'enroulement, mais la longueur et la tension des fils d'enroulement sont trop grandes pour que le corps de mousse résiste et ne casse pas.u sans parler de la flexion.The inside of a windsurf board is injected with foam, in the case of the filament winding, this foam serves as a mandrel, on which the winding is carried out, but the length and the tension of the winding wires are too large so that the foam body resists and does not break, not to mention bending.

Il faut donc réaliser un corps en mousse, avec incorporation de raidisseurs longitudinaux pour résister à la flexion durantl'enroulement filamentaire. Ces raidisseurs comparée à une poutre centrale, receivent à l'intérieur des manchons en matériaux rigides pour positionner par emboitement les arbres d'entrainement et de support du mandrin.It is therefore necessary to produce a foam body, with the incorporation of longitudinal stiffeners to resist bending during the filament winding. These stiffeners compared to a central beam, receive inside the sleeves made of rigid materials to position by interlocking the drive shafts and support of the mandrel.

D'autre part les arêtes vives du mandrin sont protégées par une bande de tissus de verre ou autres, imprégnés de résine, enfin les deux arbres permettant la rotation du mandrin sont reliés à la machine par deux cardans.On the other hand the sharp edges of the mandrel are protected by a strip of glass or other fabrics, impregnated with resin, finally the two shafts allowing the rotation of the mandrel are connected to the machine by two cardan shafts.

Les avantages obtenus grâce à cette invention : une résistance de la planche à la flexion augmentée de trois fois avec une diminution de poids de 30 %.The advantages obtained thanks to this invention: a resistance of the board to bending increased by three times with a reduction in weight of 30%.

Parmi les différentes planches du marché, la planche de saut, particulièrement bénéficiera des avantages de cette invention, solidité, grande résistance aux chocs dans les vagues, légereté, qualités indispensables pour le saut.Among the various boards on the market, the jumping board, in particular will benefit from the advantages of this invention, solidity, great resistance to impact in waves, lightness, qualities essential for jumping.

L'exposé qui suit est l'explication détaillée du procédé de fabrication faisant l'objet de l'invention.The following description is the detailed explanation of the manufacturing process which is the subject of the invention.

Le mandrin en mousse plastique, polystyrène par exemple est composé de trois éléments longitudinaux, deux parties identiques par symétrie représentant la forme de la planche désirée avec placé entre les deux parties un élément central dont la largeur est environ de quatre centimêtres pour permettre l'incorporation de boitiers de dérive, d'aileron central et de puits de mât.Les flans de ces trois éléments reçoivent une bande de tissus de verre imprégnée de résine époxy par exemple et sont réunis par collage en pressant l'enaemble : ce sont les raidisseurs.The plastic foam mandrel, polystyrene for example is composed of three longitudinal elements, two identical parts by symmetry representing the shape of the desired board with placed between the two parts a central element whose width is about four centimeters to allow incorporation daggerboard boxes, central fin and mast wells. The blanks of these three elements receive a strip of glass fabrics impregnated with epoxy resin for example and are joined by gluing by pressing the assembly together: these are the stiffeners.

Avant le collage on aura positionné des manchons pour recevoir les arbres d'entraînements et de fixations à la machine. Un évidement longitudinal dans la partie centrale du mandrin sera effectué pour permettre la pénétration de cesarbres et leur emboitement dans les manchons. Les arbres (tubes métalliques de forme carré par exemple) étant les parties mâles s'emboitent dans les manchons (mousse rigide d'époxy par exemple) ayant un évidement de forme et section identique aux arbres.Before gluing, sleeves will have been positioned to receive the drive shafts and machine fixings. A longitudinal recess in the central part of the mandrel will be made to allow the penetration of these shafts and their nesting in the sleeves. The trees (metal tubes of square shape for example) being the male parts fit into the sleeves (rigid epoxy foam for example) having a recess of shape and section identical to the trees.

Les arêtes vives du mandrin sont protégés par une bande de tissus de verre imprégnés de résine afin d'éviter des déformations pendant l'enroulement. Ce mandrin ainsi réalisé est mis en place sur la machine d'enroulement.The sharp edges of the mandrel are protected by a strip of resin-impregnated glass fabrics to prevent deformation during winding. This mandrel thus produced is placed on the winding machine.

Les travaux qui suivent, enroulements filamentaires hélicoïdaux ou circulaires, de fibre de verre imprégnés d'époxy par exemple, ainsi que l'étuvage et la finition ne diffèrent pas des travaux courants utilisant l'enroulement filamentaire.The following works, helical or circular filament windings, of fiberglass impregnated with epoxy for example, as well as steaming and finishing do not differ from current works using filament winding.

Claims (1)

MANDRIN SPECIAL EN MATERIAU MOUSSE DE PLASTIQUE FOUR LA REALISATION DD PLANCHE A VOILE PAR LE PROCEDE D'ENROULEMENT FILAMENTAIRE 5 caractérisé par : 1 - des raidisseurs longitudinaux formant une poutre centrale. 2 - des manchons incorporés dans cette poutre centrale pour recevoir les arbres d'entrainement et de fixation à la machine. I0 3 - la protection des arêtes vives par une bande de tissus imprégnés de résine. 4 - les deux arbres indépendants permettant la rotation du mandrin 15 reliés à la machine par cardans. SPECIAL CHUCK OF PLASTIC FOAM MATERIAL FOR THE PRODUCTION OF SAILBOARD BY THE FILAMENTARY WINDING PROCESS 5 characterized by: 1 - longitudinal stiffeners forming a central beam. 2 - sleeves incorporated in this central beam to receive the drive shafts and attachment to the machine. I0 3 - the protection of the sharp edges by a strip of fabrics impregnated with resin. 4 - the two independent shafts allowing the rotation of the mandrel 15 connected to the machine by universal joints.
EP82450018A 1982-11-30 1982-11-30 Special plastic foam form for manufacturing a surfboard by the filament winding method Withdrawn EP0116099A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP82450018A EP0116099A1 (en) 1982-11-30 1982-11-30 Special plastic foam form for manufacturing a surfboard by the filament winding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP82450018A EP0116099A1 (en) 1982-11-30 1982-11-30 Special plastic foam form for manufacturing a surfboard by the filament winding method

Publications (1)

Publication Number Publication Date
EP0116099A1 true EP0116099A1 (en) 1984-08-22

Family

ID=8190004

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82450018A Withdrawn EP0116099A1 (en) 1982-11-30 1982-11-30 Special plastic foam form for manufacturing a surfboard by the filament winding method

Country Status (1)

Country Link
EP (1) EP0116099A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3802010A (en) * 1972-12-18 1974-04-09 Hornbaker R Surfboard construction
DE2512152A1 (en) * 1975-03-20 1976-10-07 Graf Hagenburg Gmbh GRP surfboards with foam core - made by wrapping with inner laminate and using accurately dimensioned outer skin
US4276844A (en) * 1979-06-18 1981-07-07 Kransco Manufacturing, Inc. Soft sailboard
EP0040757A1 (en) * 1980-05-22 1981-12-02 Messerschmitt-Bölkow-Blohm Gesellschaft mit beschränkter Haftung Windsurf board
GB2085397A (en) * 1980-10-20 1982-04-28 United Technologies Corp Method of manufacturing a filament wound article

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3802010A (en) * 1972-12-18 1974-04-09 Hornbaker R Surfboard construction
DE2512152A1 (en) * 1975-03-20 1976-10-07 Graf Hagenburg Gmbh GRP surfboards with foam core - made by wrapping with inner laminate and using accurately dimensioned outer skin
US4276844A (en) * 1979-06-18 1981-07-07 Kransco Manufacturing, Inc. Soft sailboard
EP0040757A1 (en) * 1980-05-22 1981-12-02 Messerschmitt-Bölkow-Blohm Gesellschaft mit beschränkter Haftung Windsurf board
GB2085397A (en) * 1980-10-20 1982-04-28 United Technologies Corp Method of manufacturing a filament wound article

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Effective date: 19850423