EP0650747A1 - Verfahren zum Herstellen eines Skis in einer Form - Google Patents

Verfahren zum Herstellen eines Skis in einer Form Download PDF

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Publication number
EP0650747A1
EP0650747A1 EP94420240A EP94420240A EP0650747A1 EP 0650747 A1 EP0650747 A1 EP 0650747A1 EP 94420240 A EP94420240 A EP 94420240A EP 94420240 A EP94420240 A EP 94420240A EP 0650747 A1 EP0650747 A1 EP 0650747A1
Authority
EP
European Patent Office
Prior art keywords
ski
intended
layer
cavity
mold
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP94420240A
Other languages
English (en)
French (fr)
Other versions
EP0650747B1 (de
Inventor
François Jodelet
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.)
Skis Rossignol SA
Original Assignee
Skis Rossignol SA
Rossignol SA
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 Skis Rossignol SA, Rossignol SA filed Critical Skis Rossignol SA
Publication of EP0650747A1 publication Critical patent/EP0650747A1/de
Application granted granted Critical
Publication of EP0650747B1 publication Critical patent/EP0650747B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/12—Making thereof; Selection of particular materials
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/003—Structure, covering or decoration of the upper ski surface
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/12—Making thereof; Selection of particular materials
    • A63C5/126—Structure of the core

Definitions

  • the invention relates to a new method for manufacturing a shaped ski.
  • It relates more particularly to an improved process for manufacturing a ski in a single step, intended to receive various materials, capable of communicating properties specific to skiing; it relates more particularly to an improved process of the type in question, in which the relative position of the upper reinforcement can be varied relative to the outer surface of the ski.
  • the method advantageously makes it possible to produce a shaped ski in a single step, in particular when the upper assembly consists of a single shell forming a layer of protection and decoration.
  • This technique remains expensive, since it requires the use of at least two distinct phases, namely the manufacture of the body and its assembly with the lower assembly forming the sole. In addition, this technique requires the use of a rigid core previously made, to serve as a punch.
  • the walls of the bottom of the mold have a recess or a projection which, when the mold is closed, can be partially filled (see FIG. 14) by an attached plate, in particular by a visco-elastic material, inserted prior to punching between the sheet intended to form the shell and a fibrous reinforcement.
  • an attached plate in particular by a visco-elastic material
  • filling the hollow with the visco-elastic plate is a delicate operation, in particular due to the risks of inclusion of air, formation of small cavities, which can cause defects, in particular of heterogeneity of the ski at this place.
  • the invention overcomes these drawbacks. It relates to a method of manufacturing a ski in a single step of molding and forming, which makes it possible to produce skis whose edges and the top can have complex shapes, such as reliefs, and whose mechanization elements can be arranged in desired locations relative to the faces of the ski, to obtain specific characteristics.
  • the invention relates more particularly to a single-step process, in which the faces of the ski have varied reliefs without the internal fibrous reinforcing elements matching the accentuated forms of these reliefs.
  • the invention also relates to a method for producing a ski in a single step, in which the reinforcing elements are positioned relative to the neutral fiber of the ski, in order to obtain suitable characteristics in predetermined locations.
  • the invention consists, in a method of manufacturing the ski in a single step by pushing effect during the expansion of the filling foam, to be provided on the walls of the cover, and no longer on the bottom of the mold, at least one relief, then filling this relief with a plate of an appropriate material during the gradual expansion of the foam forming the heart.
  • the positioning of the plate is carried out gradually and with precision, which avoids the risks of inclusion of air, formation of small cavities and ruptures of the fibrous reinforcing element, and gives the whole a good homogeneity.
  • the top of the ski has a relief defining an internal cavity, and this cavity is filled by the characteristic plate formed by a damping assembly constituted by a rigid plate of constraints, having a modulus of elasticity E greater than 10,000 MPa and having a thickness of between 0.5 and three millimeters, preferably of the order of one millimeter; as rigid plate with high modulus of elasticity, aluminum alloys, aluminum / zinc / magnesium alloys are advantageously used, in particular of the type of those which are marketed by the company CEGEDUR-PECHINEY under the registered trademark "ZICRAL" , or thermosetting laminated or thermo-plastic materials reinforced with glass or carbon threads.
  • a damping assembly constituted by a rigid plate of constraints, having a modulus of elasticity E greater than 10,000 MPa and having a thickness of between 0.5 and three millimeters, preferably of the order of one millimeter;
  • rigid plate with high modulus of elasticity aluminum alloys, aluminum / zinc / magnesium alloys are advantageously used, in particular of the
  • This stress plate is associated with a layer of a visco-elastic material having a thickness of between 0.5 and two millimeters, preferably close to one millimeter, commonly used in the manufacture of skis, for example butyl rubber, synthetic elastomer, alone, mixed or loaded.
  • a layer of a visco-elastic material having a thickness of between 0.5 and two millimeters, preferably close to one millimeter, commonly used in the manufacture of skis, for example butyl rubber, synthetic elastomer, alone, mixed or loaded.
  • the characteristic relief of the invention can be placed both on the edges and on the top of the ski. It is advantageously positioned at a vibration belly, especially just downstream of the spatula and upstream of the skate area. This relief can also be positioned just in the center of the skate area, so as to give extra thickness in this sector.
  • a flexible waterproof membrane such as for example a sheath, of a stretchable plastic material, in which injects the fluid intended to push these elements against the walls of the mold.
  • Figure 1 is a schematic sectional representation of a mold, shown in the open position, equipped in accordance with the invention.
  • Figure 2 is a schematic representation of the same mold in the closed position.
  • Figure 3 is a longitudinal sectional representation of a ski according to the invention.
  • Figure 4 is an improved embodiment of a mold in the closed position according to a preferred embodiment of the invention (with cavity).
  • FIG. 5 is a schematic representation in summary perspective of a ski according to a mode of the invention, shown in section in FIG. 6 along the axis VI-VI ′ of FIG. 5.
  • the mold comprises (see Figures 1 and 2) two parts, respectively a bottom (1) and a cover (2), whose inclined side walls (4,5) are intended to form the edges, and whose horizontal upper wall ( 3) forms the top of the ski.
  • a sealed sheath is inserted, designated by the reference (25), tubular, made of plastic material stretchable, laid flat on the lower assembly (10).
  • an additional plate (30) is positioned on top of the upper reinforcing fibrous element (22), which may or may not be temporarily secured by any known means, such as sewing, gluing or other.
  • This rigid plate (30) for example made of metal, takes on the shape of a half-moon (see figures), so as to avoid sudden deformation of the fibers of the reinforcing fibrous material (22), sudden deformation, which, as we as is known, causes fiber breakage and, consequently, deterioration of the mechanical properties.
  • the mold is closed ( Figure 2), then injected into the sheath (25) the constituents of a polyurethane foam, namely an isocyanate and a polyol.
  • these components react with each other and expand in situ, causing the progressive plating of the upper assembly against the walls (3,4,5) while causing the adhesion of the various constituents to each other and to the foam (26) thus formed.
  • the characteristic plate (30) then gradually comes into place against the internal face of the shell (21), itself pressing against the internal face of the top (3) of the cover (2). In this way, the upper fibrous reinforcement (22) comes into place in the desired position relative to the top of the ski.
  • this rigid additional element is located longitudinally in the tip (30) and / or heel (30 ') zones, to modify the flexibility of the ski.
  • the horizontal internal wall (3) of the cover (2) has a cavity designated by the reference (6).
  • the characteristic plate (30) then gradually comes into place in the cavity (6) until it is completely filled, since its shape and its positioning on the fibrous reinforcing element (22) correspond exactly to those of said cavity (6). Furthermore, once in place, this additional element (30) locally modifies as previously, the relative position of the upper reinforcement (22) relative to the neutral fiber.
  • the filling plate of the cavity (6) forming the relief (40) is constituted by a damping assembly formed on the top in contact with the internal part of the relief (40 ) a stress plate (41), such as for example an aluminum / zinc / magnesium alloy marketed by CEGEDUR / PECHINEY under the brand "ZICRAL", having a modulus of elasticity of 12,000 MPa and a thickness of a millimeter.
  • This constraint plate (41) is associated with a sheet (42) with a high damping coefficient, the two internal and external faces of which, respectively, have been previously coated with an adhesive layer to promote the joining with the constraint plate ( 41) and with the fibrous reinforcing element (22).
  • This visco-elastic sheet (42) of butyl rubber has a thickness of one millimeter and a damping coefficient at 25 ° C, between 0.4 and 1.2, preferably 0.6 and 0.8.
  • the shell (21) has curved side edges (45,46). These edges arranged parallel to the sole (11), bear on the end of the upper reinforcing element (22) and this assembly in turn is supported on edges (47,48) of rigid plastic. These edges (47,48) rest on the edges of the lower element of the ski, and more precisely on the lower reinforcement (13,14) bearing on the edges (12,12 ').

Landscapes

  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulding By Coating Moulds (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Photovoltaic Devices (AREA)
  • Stringed Musical Instruments (AREA)
EP94420240A 1993-09-07 1994-09-06 Verfahren zum Herstellen eines Skis in einer Form Expired - Lifetime EP0650747B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9310831 1993-09-07
FR9310831A FR2709673B1 (fr) 1993-09-07 1993-09-07 Procédé pour la fabrication d'un ski en forme.

Publications (2)

Publication Number Publication Date
EP0650747A1 true EP0650747A1 (de) 1995-05-03
EP0650747B1 EP0650747B1 (de) 1998-06-03

Family

ID=9450765

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94420240A Expired - Lifetime EP0650747B1 (de) 1993-09-07 1994-09-06 Verfahren zum Herstellen eines Skis in einer Form

Country Status (5)

Country Link
US (1) US5501825A (de)
EP (1) EP0650747B1 (de)
AT (1) ATE166792T1 (de)
DE (1) DE69410742T2 (de)
FR (1) FR2709673B1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6117376A (en) * 1996-12-09 2000-09-12 Merkel; Michael Method of making foam-filled composite products
US6349961B1 (en) * 1999-06-15 2002-02-26 Jumbo Snowboards, Llp Composite molded snowboard with metal edges
US6520529B1 (en) * 1999-09-29 2003-02-18 K-2 Corporation Integrated modular glide board
US6612605B2 (en) 1999-09-29 2003-09-02 K-2 Corporation Integrated modular glide board
DE29921881U1 (de) * 1999-12-13 2000-02-03 Blizzard Ges. m.b.H., Mittersil Gleitbrett
FR2802438B1 (fr) * 1999-12-21 2002-05-31 Rossignol Sa Planche de glisse
FR2804611B1 (fr) * 2000-02-03 2002-10-11 Rossignol Sa Procede de fabrication d'une planche de glisse sur neige, dont la surface externe, inferieure ou superieure, comporte des parties en relief
AT411572B (de) * 2001-09-07 2004-03-25 Fischer Gmbh Gleitkörper, insbesondere ski sowie verfahren zur herstellung eines gleitkörpers, insbesondere für skier
FR2848868B1 (fr) * 2002-12-19 2007-01-19 Salomon Sa Planche de glisse ou de roulage
AT500213B1 (de) * 2003-04-23 2007-09-15 Atomic Austria Gmbh Schi
FR2865412B1 (fr) * 2004-01-28 2006-02-17 Skis Dynastar Planche de glisse sur neige pour enfants et procede de fabrication
AT501312B1 (de) * 2005-02-04 2009-05-15 Hexcel Holding Gmbh Verfahren zur herstellung eines gleitgeräts und gleitgerät
US7416401B2 (en) * 2005-06-13 2008-08-26 The Boeing Company Lightweight composite fairing bar and method for manufacturing the same
FR3038845B1 (fr) * 2015-07-17 2018-12-07 Rossignol Sa Planche de glisse
WO2023196403A1 (en) * 2022-04-05 2023-10-12 Miller Bode Skis with reinforcement layer cutout

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0428885A1 (de) * 1989-11-22 1991-05-29 Salomon S.A. Verfahren zur Herstellung eines Skis durch Injektion, und Skistruktur
DE4130110A1 (de) * 1990-09-27 1992-04-02 Rohrmoser Alois Skifabrik Ski mit einer raeumlich profilierten oberseite
EP0526353A1 (de) * 1991-07-31 1993-02-03 Skis Rossignol S.A. Verfahren zur Herstellung einer geformten komplexen Struktur, insbesondere ein Ski, und so erhaltene Struktur
FR2679820A1 (fr) * 1991-07-31 1993-02-05 Rossignol Sa Procede pour la fabrication d'une structure moulee complexe, notamment d'un ski et structure moulee complexe ainsi obtenue.

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4044083A (en) * 1973-10-29 1977-08-23 Amf Incorporated Method of making plastic ski
US3928106A (en) * 1974-05-14 1975-12-23 Molnar & Co Inc Method of manufacturing a ski
FI752865A7 (de) * 1975-10-15 1977-04-16 Karhu Titan Oy
US4250585A (en) * 1979-03-07 1981-02-17 Hart Ski Mfg. Co., Inc. Water skis having a reinforced, foamed-in-place, plastic hull bonded to an aluminum deck
JPS58163385A (ja) * 1982-03-20 1983-09-28 美津濃株式会社 インジエクシヨンスキ−板及びその製造方法
US4556375A (en) * 1982-09-30 1985-12-03 Texas Recreation Corporation Apparatus for making water skis
JPS6021775A (ja) * 1983-07-19 1985-02-04 美津濃株式会社 インジエクシヨンスキ−板の製造方法
DE3437865A1 (de) * 1983-10-21 1985-05-09 Kabushiki Kaisha Swallow Ski, Iiyama, Nagano Herstellungsverfahren fuer skier
US4706985A (en) * 1984-02-22 1987-11-17 Tristar Sports Inc. Alpine ski with selective reinforcement
DE3512267A1 (de) * 1985-04-03 1986-10-16 Klepper Beteiligungs Gmbh & Co Bootsbau Kg, 8200 Rosenheim Segelbrettkoerper und verfahren zu seiner herstellung
FR2611519B1 (fr) * 1987-02-27 1994-06-17 Salomon Sa Procede pour realiser un ski et ski realise selon ce procede
FR2620628B2 (fr) * 1987-02-27 1994-08-19 Salomon Sa Procede pour realiser un ski et ski fait selon ce procede
FR2615746B1 (fr) * 1987-05-27 1990-02-16 Rossignol Sa Ski de descente et procede de fabrication de ce ski
US5230844A (en) * 1987-09-04 1993-07-27 Skis Rossignol, S.A. Process for producing a complex elastic molded structure of the sandwich type
FR2654644B1 (fr) * 1989-11-22 1992-03-13 Salomon Sa Procede de fabrication d'un ski injecte, et structure de ski obtenue par ce procede.
FR2654670A1 (fr) * 1989-11-23 1991-05-24 Rossignol Sa Procede pour la fabrication en une seule operation d'une structure moulee complexe, notamment un ski, et structure moulee complexe ainsi obtenue.
FR2684011B1 (fr) * 1991-11-25 1994-01-07 Rossignol Sa Skis Planche de glisse pourvue d'un dispositif d'amortissement des vibrations.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0428885A1 (de) * 1989-11-22 1991-05-29 Salomon S.A. Verfahren zur Herstellung eines Skis durch Injektion, und Skistruktur
DE4130110A1 (de) * 1990-09-27 1992-04-02 Rohrmoser Alois Skifabrik Ski mit einer raeumlich profilierten oberseite
EP0526353A1 (de) * 1991-07-31 1993-02-03 Skis Rossignol S.A. Verfahren zur Herstellung einer geformten komplexen Struktur, insbesondere ein Ski, und so erhaltene Struktur
FR2679820A1 (fr) * 1991-07-31 1993-02-05 Rossignol Sa Procede pour la fabrication d'une structure moulee complexe, notamment d'un ski et structure moulee complexe ainsi obtenue.

Also Published As

Publication number Publication date
US5501825A (en) 1996-03-26
DE69410742D1 (de) 1998-07-09
EP0650747B1 (de) 1998-06-03
ATE166792T1 (de) 1998-06-15
FR2709673B1 (fr) 1995-10-06
FR2709673A1 (fr) 1995-03-17
DE69410742T2 (de) 1998-12-10

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