EP3513845A1 - Eingespritztes gleitbrett - Google Patents

Eingespritztes gleitbrett Download PDF

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Publication number
EP3513845A1
EP3513845A1 EP19150269.9A EP19150269A EP3513845A1 EP 3513845 A1 EP3513845 A1 EP 3513845A1 EP 19150269 A EP19150269 A EP 19150269A EP 3513845 A1 EP3513845 A1 EP 3513845A1
Authority
EP
European Patent Office
Prior art keywords
incorporated
assembly
core
board according
gliding board
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Withdrawn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
EP19150269.9A
Other languages
English (en)
French (fr)
Inventor
Yann Malroux
Pierre Vauge
Marise ENNA
Florent SCHWALLER
Thierry Monnet
Emmanuel Cassibba
Jacky Christoud
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 EP3513845A1 publication Critical patent/EP3513845A1/de
Withdrawn legal-status Critical Current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
    • A63C5/003—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
    • A63C5/006—Appearance of the ski-tip, the rear end or the upper ski-edge
    • 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 the field of snow sports, including snow sports on snow, such as skiing or surfing, but also water sports on water. It relates more specifically to a board structure including a core made by injection techniques in situ, that is to say in which the core is created during the molding operation generating the assembly of all elements components of the board.
  • Gliding boards, and snow sliding boards in particular are formed by forming structures that combine layers of mechanical reinforcements away from a neutral fiber via a core.
  • a board for gliding on snow has a lower assembly, comprising a gliding soleplate, associated with a mechanical reinforcing layer, which may be metallic or composite, and which extends over all or part of the length of the board .
  • the board also includes an upper assembly which likewise includes one or more layers of mechanical reinforcements, and most often an outer layer of decoration and protection.
  • the core may be a prefabricated piece, typically based on wood or polymeric materials, which is placed in the mold above the lower assembly, before being covered by the upper assembly to proceed molding.
  • An example is given by the document EP 3,028,749 .
  • Another technique consists in producing the core in situ, that is to say by injecting an expandable material when the mold is already closed, and contains the lower and upper sets.
  • an expandable material typically based on polyurethane
  • polyurethane is formed by the polymerization reaction of chemical components, typically based on alcohols and isocyanates, which react together after being introduced into the mold. , between the upper and lower sets.
  • the reaction of these two components being expansive and exothermic, the core is formed between the reinforcements by plating the lower and upper assemblies against the corresponding areas of the mold. This foam thus ensures the bonding of the different elements together.
  • the problem is solved by the invention by proposing a particular positioning of inserts or parts incorporated in an injected structure.
  • this board is characterized in that it also comprises at least one incorporated part.
  • This piece has its lower and upper faces coming into contact with the respectively lower and upper sets, and the entirety of the rest of the surface of this incorporated part is in contact with the material forming the core.
  • the invention consists in producing a board by injection, incorporating an insert which is held tight between the lower assembly and the upper assembly, and without any other contact with fixed elements of the structure, especially the side edges, or another element that would itself be fixed relative to the mold.
  • the gliding board comprises an integral part, whose entire lateral periphery is in contact with the core so that this incorporated element forms an island isolated inside the core, and opening on the upper faces. and lower of the latter.
  • the part incorporated may be made of a translucent or transparent material, and may advantageously be located in an area where the upper or lower assembly is translucent or transparent.
  • the embedded part is positioned so that it is aligned with areas of the upper assembly and / or the soleplate, which allows for transmission of light from one face to the other ski. It follows an original aesthetic effect.
  • this incorporated part may be made of a material chosen from thermoplastic polyurethane (TPU), acrylonitrile butadiene styrene (ABS), polycarbonate, these materials being taken alone or optionally mixed.
  • TPU thermoplastic polyurethane
  • ABS acrylonitrile butadiene styrene
  • polycarbonate these materials being taken alone or optionally mixed.
  • the positioning of the part incorporated inside the mold before injection can be done in different ways.
  • the incorporated part may come into contact with the upper or lower assembly via a layer of adhesive material.
  • This adhesive material may be on a layer of glue applied to the appropriate places the upper and lower assemblies, and the incorporated part. It may also be an adhesive film present on the lower or lower assembly, or on the incorporated part.
  • this incorporated part may be glued on the upper or lower assembly.
  • the upper assembly has transparent or translucent areas, it may be advantageous to position the part incorporated under the upper assembly, aligning it precisely with the transparent or translucent areas of the upper assembly, all before the inserting the upper assembly into the mold.
  • the part incorporated in accordance with the invention may be disposed at any point of the board, and in particular at a raised end of the board, so as to benefit from the light transmission through the sole, at the level of the board. spatula or heel of the board.
  • the board has a seal present between the lower or upper face of the incorporated part and respectively the lower or upper assembly. In other words, it prevents any infiltration of the material forming the core between the incorporated part and the whole higher or lower, by the presence of this seal disposed on the periphery of the contact zone between the incorporated part and the upper or lower assembly.
  • this seal may be an insert, whose shape matches that of the periphery of the lower or upper face of the incorporated part.
  • the seal may also form an outgrowth of the incorporated part located on the periphery of the lower or upper face of this incorporated part.
  • the incorporated part has a peripheral bead, which ensures an overpressure on the whole lower or higher than its contact, when the mold is closed, thus preventing core material from interfering between the incorporated part and the upper or lower set concerned.
  • a ski 1 is made by assembling a lower assembly 2 and an upper assembly 7, defining between them a space filled by the core.
  • the lower assembly 2 is composed of a sliding sole 3 on which are placed a reinforcing layer 4, which is bordered by the side edges 5, 6.
  • a reinforcing layer 4 which is bordered by the side edges 5, 6.
  • the upper assembly 7 is composed of a top decorative layer 8, associated with one or more reinforcing layers 12, represented on the figure 3 .
  • the decorative layer may also comprise a protective layer made for example of plastic, transparent or not.
  • the upper decorative layer 8 has zones 9, having a certain degree of transparency, thus allowing the user to perceive the lower layers, and to let some of the light pass through the assembly. of the structure of the ski, to give a transparency effect to the board, this in the case where the lower and upper reinforcing layers are also transparent or translucent, which is the case with reinforcements made of fiberglass composite materials.
  • the composite reinforcements used for the molding of the ski are glass fibers embedded in an already polymerized resin and are in the form of laminates.
  • the reinforcements could be perforated metal layers to let the expansive foam through these openings.
  • the upper reinforcements are glued under the decorative layer, while the reinforcements lower are glued on the upper layer of the sole.
  • the expansive foam injected ensures the bonding of all the elements of the structure between them, in particular the bonding of the upper assembly with the lower assembly and also with the edges.
  • the embodiment of this core conventionally comprises the injection into the interior of this volume of chemical components that react with one another to give an expansive foam and in particular a polyurethane foam, which presses the lower assembly 2 and the assembly together. upper 7 against the walls of the mold.
  • This injection is made according to traditional methods, at one or more points of entry inside the mold, allowing these components to flow within the volume defined between the upper and lower sets, until filling of the last.
  • this polyurethane foam is generally opaque and does not allow light to pass and does not create vertical transparency zones in an injected ski.
  • the structure of the ski comprises, as illustrated in FIG. figure 1 incorporated parts 20, 21, which are interposed between the lower assembly 2, and the upper assembly 7. More specifically, the lower face of these elements 20, 21 rests on the upper face of the lower assembly, which can be the upper face of the highest reinforcing layer or a possible additional layer intended to form an interface, and forming the upper surface of the lower assembly 2.
  • the upper face of the elements 20, 21 comes into contact with the lower face of the upper assembly 7, namely the lower face of the lower reinforcement layer of the upper assembly or a possible interface layer.
  • these parts 20, 21 are arranged in such a way that they are embedded inside the core, that is to say that the material constituting the core comes into contact with all the lateral faces of these parts 20, 21 .
  • the portions of the parts 20, 21 which are facing the nearest songs are separated from the latter by a portion 16, 18 of the core and the parts 20 and 21 are separated from each other by another portion of the core 17.
  • the parts 21, 20 thus form islands of a material different from the core, and form a junction between the upper and lower sets.
  • the incorporated parts 20, 21 may be in various materials chosen according to the desired properties. Thus, these parts may have a role mainly mechanical reinforcement or anchoring elements mounted on the board, and then be made of rather rigid materials, and metal in particular. We can also look for lightening effects, with very low density materials. Transparency effects can be obtained if the material of the incorporated parts is transparent, as for example with the use of a material based on thermoplastic polyurethane (TPU) or ABS + TPU or a polycarbonate.
  • TPU thermoplastic polyurethane
  • ABS + TPU polycarbonate
  • the material of the parts 20, 21 is transparent or translucent, it may be advantageous for these parts to be placed in line with the zones 9, which are also translucent or transparent, of the decoration layer, so as to allow the light to penetrate inside the structure of the board.
  • the gliding sole also has translucent or even transparent zones, as well as glass fiber laminates that are also translucent or even transparent, then the light can pass completely through the thickness of the structure of the board, giving a aesthetically interesting transparency effect.
  • the parts 20 and 21 are L-shaped, symmetrical with respect to each other along the longitudinal axis of symmetry of the ski, and are of shorter length than the ski core. But any other shape, of rounded or angular type, may be envisaged for these parts 20, 21. These parts 20, 21 are of constant thickness because they are located in an area of the spatula where the spacing between the lower set and the upper set is constant. However, these incorporated parts could also be of variable thickness and in particular follow the separation curve between the lower and upper sets.
  • the parts 20,21 may be in accordance with the part 30.
  • the part 30 can be assembled to the lower face of the upper assembly 7, before the introduction of this set into the mold. This assembly can be carried out either by bonding or by the use of an adhesive film enabling the part 30 to be accurately positioned with respect to the transparent zones 9 formed in the upper decorative layer 8.
  • the part 30 comes in direct contact with the upper face of the lower assembly, in the absence of bonding.
  • the lower face of the part 30 comprises a seal 32, which comes into contact with the lower assembly when the mold is closed, and which is then compressed to prevent penetration of the material of the expanding core, between the piece 30 and the lower assembly 2 during molding.
  • This seal creates a zone of overpressure in the vertical direction, on the periphery or around the part 30 to limit and preferably block the passage of the polyurethane foam injected under the incorporated part 30. It should be noted in Indeed, since the pressures observed during molding are high and since the incorporated part rests directly on the lower assembly, it is preferable to avoid any passage of material from the core below the characteristic part 30, in order to to obtain a ski of good quality, without defects, and to preserve the best possible level of transparency for the whole structure, and all the more so since the material commonly used to make the core is a dark and more generally black polyurethane.
  • This peripheral seal 32 is thus disposed on the outer contour of the lower face of the piece 30.
  • the invention also covers other positioning variants, in which, in particular, the characteristic parts are assembled on the lower assembly before being placed in the mold, and in which the peripheral seal is disposed on the upper face of this mold. same room.
  • This characteristic piece is in direct contact with the upper assembly, and is maintained under pressure, to prevent any infiltration of polyurethane foam between the upper face of this part and the lower face of the upper assembly.
  • the incorporated parts 20, 21 may conform to the part 40.
  • the characteristic part 40 is also glued under the upper assembly 7.
  • the periphery of the part 40 has a slight extra thickness 42 which is an integral part of the piece 40, and which forms a seal against the penetration of the core material between the characteristic part and the lower assembly.
  • This extra thickness is low and is between 0.1 and 0.4mm.
  • the shape of this protrusion 42 can be obtained either directly during the manufacture of the characteristic part by injection, or even by machining thereof.
  • this protrusion 42 causes additional support, or even a slight deformation of the reinforcement layers of the lower assembly or a slight deformation in compression of this protrusion, which creates an overpressure zone and thus allows to prevent penetration of the material forming the core during its expansion, under the embedded part 40.
  • the invention also covers variants in which this peripheral protrusion is present on the upper face of the characteristic part, which is then glued on the lower assembly.
  • the invention allows the production of injected skis whose core incorporates characteristic elements or incorporated parts ensuring a bridging between the upper and lower assemblies, without requiring anchoring relative to the songs of the board, or other intermediate structures fixed relative to the rigid portions of the board, creating in particular a pressure zone around the periphery of at least one of the faces of the characteristic element after closure of the mold and during the molding of the ski.
  • the characteristic element is surrounded around all its transverse faces by the core foam. It additionally makes it possible to achieve particularly advantageous transparency effects.
  • the elements incorporated into the structure of an injected ski may be in a variable number depending on the application and may be positioned in the area of the lift of the ski spatula, but also in any position between the heel zone and the spatula zone. ski.

Landscapes

  • Injection Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
EP19150269.9A 2018-01-19 2019-01-03 Eingespritztes gleitbrett Withdrawn EP3513845A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1850425A FR3077006B1 (fr) 2018-01-19 2018-01-19 Ski injecte transparent

Publications (1)

Publication Number Publication Date
EP3513845A1 true EP3513845A1 (de) 2019-07-24

Family

ID=62143334

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19150269.9A Withdrawn EP3513845A1 (de) 2018-01-19 2019-01-03 Eingespritztes gleitbrett

Country Status (2)

Country Link
EP (1) EP3513845A1 (de)
FR (1) FR3077006B1 (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0300403A1 (de) 1987-07-20 1989-01-25 Giacomini S.p.A. Profilierter Dichtring für Absperrhähne mit Kugelküken
FR2696126A1 (fr) 1992-09-29 1994-04-01 Rossignol Sa Procédé pour la fabrication d'un ski injecté, élément pour la mise en Óoeuvre de ce procédé et ski ainsi obtenu.
FR2725910A3 (fr) * 1994-10-20 1996-04-26 Kaestle Ag Planche de surf des neiges et procede pour sa realisation
EP1504796A1 (de) 2003-08-04 2005-02-09 Skis Rossignol S.A. Herstellungsverfahren für ein Schneegleitbrett mit seitlichen Verstärkungselementen
EP2384964A1 (de) * 2010-05-07 2011-11-09 Salomon S.A.S. Gleitbrett
EP3028749A1 (de) 2014-12-02 2016-06-08 Skis Rossignol Gleitbrett, in dessen kern ein element mit hoher flexibilität eingebaut ist
FR3046732A1 (fr) * 2016-01-15 2017-07-21 Rossignol Sa Planche de glisse sur neige

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0300403A1 (de) 1987-07-20 1989-01-25 Giacomini S.p.A. Profilierter Dichtring für Absperrhähne mit Kugelküken
FR2696126A1 (fr) 1992-09-29 1994-04-01 Rossignol Sa Procédé pour la fabrication d'un ski injecté, élément pour la mise en Óoeuvre de ce procédé et ski ainsi obtenu.
FR2725910A3 (fr) * 1994-10-20 1996-04-26 Kaestle Ag Planche de surf des neiges et procede pour sa realisation
EP1504796A1 (de) 2003-08-04 2005-02-09 Skis Rossignol S.A. Herstellungsverfahren für ein Schneegleitbrett mit seitlichen Verstärkungselementen
EP2384964A1 (de) * 2010-05-07 2011-11-09 Salomon S.A.S. Gleitbrett
EP3028749A1 (de) 2014-12-02 2016-06-08 Skis Rossignol Gleitbrett, in dessen kern ein element mit hoher flexibilität eingebaut ist
FR3046732A1 (fr) * 2016-01-15 2017-07-21 Rossignol Sa Planche de glisse sur neige

Also Published As

Publication number Publication date
FR3077006B1 (fr) 2020-01-03
FR3077006A1 (fr) 2019-07-26

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