EP0650747A1 - Verfahren zum Herstellen eines Skis in einer Form - Google Patents
Verfahren zum Herstellen eines Skis in einer Form Download PDFInfo
- 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
Links
Images
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)
- Stringed Musical Instruments (AREA)
- Photovoltaic Devices (AREA)
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)
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 Gmbh | 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 |
US11980806B2 (en) * | 2022-04-05 | 2024-05-14 | Peak Ski Company, LLC | Skis with reinforcement layer cutout |
Citations (4)
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)
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 |
FI752865A (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. |
-
1993
- 1993-09-07 FR FR9310831A patent/FR2709673B1/fr not_active Expired - Fee Related
-
1994
- 1994-09-02 US US08/300,720 patent/US5501825A/en not_active Expired - Fee Related
- 1994-09-06 EP EP94420240A patent/EP0650747B1/de not_active Expired - Lifetime
- 1994-09-06 DE DE69410742T patent/DE69410742T2/de not_active Expired - Fee Related
- 1994-09-06 AT AT94420240T patent/ATE166792T1/de active
Patent Citations (4)
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 |
---|---|
EP0650747B1 (de) | 1998-06-03 |
FR2709673A1 (fr) | 1995-03-17 |
ATE166792T1 (de) | 1998-06-15 |
US5501825A (en) | 1996-03-26 |
DE69410742T2 (de) | 1998-12-10 |
DE69410742D1 (de) | 1998-07-09 |
FR2709673B1 (fr) | 1995-10-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0428885B1 (de) | Verfahren zur Herstellung eines Skis durch Injektion, und Skistruktur | |
EP0650747B1 (de) | Verfahren zum Herstellen eines Skis in einer Form | |
EP0581098B1 (de) | Verfahren zur Herstellung eines Skis | |
EP0042782B1 (de) | Sturzhelm mit einer aus thermoplastischem Kunststoff eingespritzten Schale und Verfahren zur Herstellung dieses Helms | |
EP0428886B1 (de) | Verfahren zur Herstellung eines gespritzten Skis und Skistruktur | |
EP0770472B1 (de) | Verfahren zur Herstellung einer Platte aus Verbundmaterial durch Transfer-Giessverfahren | |
EP0526353B1 (de) | Verfahren zur Herstellung einer geformten komplexen Struktur, insbesondere ein Ski, und so erhaltene Struktur | |
EP0498963B1 (de) | Ski zum Gleiten auf Schnee und Eis | |
EP0665034B1 (de) | Ski mit "in situ" injiziertem Kern | |
EP0442262A1 (de) | Verfahren zur Herstellung eines Skis durch Abguss und nach diesem Verfahren hergestellter Ski | |
EP0608186A1 (de) | Ski und Verfahren zur Herstellung eines Skis mit gespritztem Kern und gelochter innerer Verstärkungseinlage | |
EP0081834B1 (de) | Leichtgebauter Ski mit Kern und sein Herstellungsverfahren | |
EP1884268B1 (de) | Verfahren zur Herstellung eines Gleitbrettes | |
CA1329313C (fr) | Procede ski | |
FR2679820A1 (fr) | Procede pour la fabrication d'une structure moulee complexe, notamment d'un ski et structure moulee complexe ainsi obtenue. | |
EP0729769A1 (de) | Verfahren zur Herstellung einer Spritzgussstruktur | |
EP0677306B1 (de) | Ski und Verfahren zu dessen Herstellung | |
FR2818915A1 (fr) | Planche de glisse | |
FR2721525A1 (fr) | Procédé pour la réalisation d'un ski et ski obtenu par ce procédé. | |
FR2724214A1 (fr) | Piece, planiforme et/ou filiforme renforcee d'une ou plusieurs nervures dans sa masse | |
FR2718650A1 (fr) | Ski alpin. | |
FR2691638A1 (fr) | Structure moulée complexe et ski intégrant une telle structure. | |
FR2731159A1 (fr) | Procede pour la fabrication d'une planche de glisse dont la face superieure presente des evidements et planche de glisse ainsi obtenue | |
EP3513845A1 (de) | Eingespritztes gleitbrett | |
WO2005065912A1 (fr) | Procede de fabrication d’une planche de glisse et planche obtenue par un tel procede |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT CH DE LI |
|
17P | Request for examination filed |
Effective date: 19950511 |
|
17Q | First examination report despatched |
Effective date: 19960201 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT CH DE LI |
|
REF | Corresponds to: |
Ref document number: 166792 Country of ref document: AT Date of ref document: 19980615 Kind code of ref document: T |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REF | Corresponds to: |
Ref document number: 69410742 Country of ref document: DE Date of ref document: 19980709 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980930 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980930 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 19990818 Year of fee payment: 6 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19990911 Year of fee payment: 6 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000906 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010601 |