EP2353670A2 - Planche de surf sur neige - Google Patents

Planche de surf sur neige Download PDF

Info

Publication number
EP2353670A2
EP2353670A2 EP11153117A EP11153117A EP2353670A2 EP 2353670 A2 EP2353670 A2 EP 2353670A2 EP 11153117 A EP11153117 A EP 11153117A EP 11153117 A EP11153117 A EP 11153117A EP 2353670 A2 EP2353670 A2 EP 2353670A2
Authority
EP
European Patent Office
Prior art keywords
fibers
snow
sole
snow 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.)
Granted
Application number
EP11153117A
Other languages
German (de)
English (en)
Other versions
EP2353670A3 (fr
EP2353670B1 (fr
Inventor
Simon Jacomet
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.)
ZAI TEC AG
Original Assignee
Zai 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
Application filed by Zai AG filed Critical Zai AG
Publication of EP2353670A2 publication Critical patent/EP2353670A2/fr
Publication of EP2353670A3 publication Critical patent/EP2353670A3/fr
Application granted granted Critical
Publication of EP2353670B1 publication Critical patent/EP2353670B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A63C5/04—Structure of the surface thereof
    • A63C5/056—Materials for the running sole
    • 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
    • A63C5/12—Making thereof; Selection of particular materials
    • A63C5/126—Structure of the core

Definitions

  • the present invention relates to snow gliding boards, such as skis or snowboards, which are mainly used as winter sports equipment. It relates to snow sliding boards according to the preamble of independent claim 1.
  • skis and snowboards are known from the prior art in which an attempt is made to increase the torsional stiffness or to reduce the torsional deformation of the ski or of the snowboard about the longitudinal axis. This is intended to improve the power transmission between the binding - as an interface between ski boot and ski - and the ski edge.
  • the bending stiffness of the skis is also to be increased in order to achieve better control stability, above all at high speeds.
  • the snow sliding board comprises a supporting sole which has a thickness of at least 0.5 mm and consists of a composite material of continuous fibers embedded in a thermoplastic material.
  • the sole extends over the entire width of the snowboard.
  • the sole may form the sliding surface or be coated with a thin sliding coating, as is known from the prior art.
  • the continuous fibers in the sole are present as unidirectional continuous fibers, scrims of fiber bundles, fabrics, fabrics of fiber bundles and combinations thereof.
  • the soles are formed by a laminate of a plurality of fiber layers, wherein the orientation of the fibers in the laminate relative to the longitudinal axis of the snow gliding board is anisotropic or quasi-isotropic.
  • the fibers are oriented in the following directions with respect to the longitudinal axis of the snowboard: 0 °, + 45 °, 90 °, -45 °.
  • the fibers are oriented in the following directions with respect to the longitudinal axis of the snowboard: 30 °, -10 °, 50 °, -60 °.
  • the direction of the fibers in adjacent fiber layers preferably changes relative to one another.
  • Thermoplastics are preferably used for the production of the snow sliding boards according to the invention, which are selected from the group: high density polyethylene (HDPE), polyamide (PA), polyphenylene sulfide (PPS), polyethyleneimine (PEI), polyetherketone (PEKK) or polyetheretherketone (PEEK) ,
  • the preferably used continuous fibers are selected from the group: carbon fibers, basalt fibers, aramid fibers, glass fibers or steel fibers.
  • the combination of polyether ketone (PEEK) and carbon fibers has proven to be an extremely efficient combination of materials. Despite the relatively high price of these materials, especially the polyether ketone, this combination is particularly preferred because it opens up completely new ways by their excellent mechanical properties in the lightweight construction of snowboard.
  • the adhesive is preferably a thermoplastic that can be melted at a temperature that is below the softening temperature of the thermoplastic in the composite.
  • the high stability of the sole is used to positively and / or non-positively connect the correspondingly shaped sole with a core and / or a top flange / or a top layer.
  • a tongue and groove joint between sole and core and / or upper flange which extends substantially over the entire length of the Schneegleitbretts be used to connect the individual components together.
  • This type of connection allows the sole and the core and / or upper belt to be relatively movable relative to each other. Designated When the sole and the top chord are used as chassis, the mobility in the axial direction allows the core to slide in relation to the chassis, as a result of which the damping properties can be purposefully influenced and improved.
  • Corresponding locking means prevent the mated components from disengaging when using the snowboard.
  • the components can also be locally adhesively bonded or welded together. This combination of components allows Schneegleitbretter, for example, produce skis, where the entire surface can be easily replaced. Even when interchangeable coating, the edges are preferably glued to the sole.
  • the snow gliding boards are made in one piece from a sole having only sides attached to both edges, a thin tread covering and means for attaching bonds.
  • the novel material combination according to the invention makes it possible to produce a ski or a snowboard which consists, as it were, monolithically of the composite material of continuous fibers embedded in a thermoplastic material. The orientation of the fibers in the thermoplastic material allows the properties of the ski or the snowboard to be adjusted so that - as already described above - both the stability and the damping properties meet the highest demands.
  • the targeted attachment of recesses in the inventive snow gliding boards, at least in the soles, on the one hand can reduce the weight
  • the mechanical-physical properties of the snow gliding board can be specifically influenced locally.
  • the recesses penetrated the Schneegleitbrett in its entire thickness, so that locally removed material and thus the inertial mass is reduced.
  • the local weakening leads to a reduction in the stiffness of the snow gliding board.
  • the snow gliding boards according to the invention can be formed thermally, such a local weakening can be fully or partially compensated or even overcompensated by corresponding spatial deformation.
  • Local recesses that reduce the torsional stiffness can be compensated, for example, by a bulge of the sole.
  • the recesses in the soles are arranged such that they have continuous struts.
  • the term continuous strut is to be understood as meaning a region of the sole which runs without interruptions from one edge region to the other edge region.
  • individual struts intersect and form nodes in the region of the central longitudinal axis.
  • the recesses are shaped such that in the front and in the rear ski area of the struts a cable pattern is formed.
  • the recesses may be individual large-area openings or fields formed by a number of perforations or slots.
  • a multilayer laminate is produced as a plate-shaped semi-finished product, which is then processed by cutting and thermoforming to form the sole according to the invention.
  • the consolidated laminate in sheet form can be thermoformed in a first step, wherein, for example, the later blade area bent front and rear if necessary, and the bias of the Schneegleitbretts is adjusted.
  • the outer contour of the snow gliding board is cut from the pre-bent plate. If, as described above, additional recesses are provided, these are cut or milled simultaneously or subsequently.
  • the consolidated laminate in sheet form is cut in a first step and thermoformed in a subsequent step.
  • the choice of material according to the invention in one or more further steps makes it possible to set the curvature and / or torsion of at least the sole, preferably of the entire snow gliding board, by means of thermoforming as desired.
  • the snow gliding boards in particular skis, are shaped such that in a rest position - d. H. without the action of external forces and moments - have at least one torsion in the longitudinal direction.
  • torsion is meant here a geometric shape in which the snow sliding board is twisted or twisted along its longitudinal axis, as if a torsional moment acting on a possibly known from the prior art, unbundled snow sliding board. At least one area of the snow gliding board thus has a helical shape - but with a large pitch.
  • the maximum angle between two skewed straight lines is between about 0.2 ° and 60 °, for example between about 2 ° and 40 ° and preferably between about 8 ° and 20 ° in the snow sliding board according to the invention.
  • the pitch of the helical shape of a snow gliding board according to the invention is in the range between about 3 m and 3600 m, for example between about 4.5 m and 360 m, and preferably between about 9 m and 90 m.
  • Such a twist angle can be adjusted in the snow sliding board according to the present invention solely by heating over the softening temperature of the thermoplastic used, setting the desired angle of rotation and cooling and change almost any number of times.
  • the convex bias in the central region of the gliding board, the deflections in the area of the front blade and the rear end and the curvature in the transverse direction can be changed.
  • an essential feature of the aforementioned embodiments of the present invention is that the lower sole or sliding layer is not only intrinsically stable, but contributes significantly to the mechanical stability of the Schneegleitbretts. This becomes a considerable one Part is ensured by the new combination of materials whose properties are characterized in more detail below with reference to some characteristics.
  • the preferably used thermoplastic composite material has a specific strength of at least 3 times higher than titanium, 4 times higher than aluminum and 5 times higher than steel.
  • the CF / PEEK composite materials according to the invention have a fabric density of, for example, 1.56 g / cm 3 and a fiber basis weight of 145 g / m 2 .
  • the content of thermoplastic is 34% wt at a prepreg basis weight of 220 g / m 2 .
  • the nominal thickness of the commercially available prefabricated prepregs, which have proven to be advantageous, is 0.136 mm, whose fiber density is 1.77 g / cm 3 .
  • the density of the thermoplastic material is preferably 1.32 g / cm 3 .
  • the flexural strength was 1890 MPa and the attenuation was at least 15% higher than CF / epoxy composites.
  • thermosets In order to investigate differences in the energy consumption between thermosets and thermoplastics, drop weight tests were carried out. In this experiment, a sample is clamped onto a device. A weight repeatedly falls with increasing energy in the same place of the sample, whereby the introduced kinetic energy and the energy consumed by the breaking processes are measured. The energy balance shows that the CF / PEEK material is superior to the fiber-reinforced thermosets. CF / PEEK can both elastically and irreversibly absorb much more energy than the carbon fiber reinforced epoxides compared herewith.
  • Another advantage of the snow gliding boards according to the invention is that the materials used are very readily recyclable, at least for the sole.
  • the recycling of fiber-reinforced thermoplastics is much more advantageous because theoretically the matrix can be melted in as often as desired.
  • the endless fiber-reinforced thermoplastics used it must be taken into consideration that the fiber structure in hammer or knife mills is largely destroyed by a process of material recycling and that only discontinuous long fibers with different fiber lengths are produced as starting material for further processing.
  • This recycled material is therefore a material with poorer mechanical properties as the original material according to the invention. It has been shown that the mechanical property potential of pressed recycled material is well below the properties of continuous fiber reinforced thermoplastics, but far exceeds that of injection molded short fiber reinforced materials.
  • FIG. 1 is a ski 1 according to a first embodiment with a large approximately rectangular recess 20 in the front region of the ski 1 in a view obliquely from below on the tread 30 shown.
  • the ski 1 is preferably made monolithically from a composite material of continuous fibers embedded in a thermoplastic material. Due to the large recess 20 in the front region of the ski 1, the weight and thus the inertia in this area is substantially reduced. However, the edge portions remain in full length, so that in this respect the handling characteristics are not degraded compared to a full length solid ski. In order not to produce any undesirable resistance in the region of the trailing edge 21 of the recess 20, this edge is tapered forward or slightly bent. Without deviating from the basic idea of the invention, the underside 30 of the ski can be coated with a thin sliding coating.
  • FIG. 2 is an exploded view of a ski 2 according to another embodiment shown in a view obliquely from below.
  • the ski is made up of a sole 10 a Core 11 and a top layer 12 together, the sole 10 is provided on both sides with steel edges 13.
  • the core 11 is provided on the longitudinal side 111, 112 in each case with a continuous groove and dimensioned such that it can be inserted completely positively into a recess formed by recesses 121 and 101 in the sole 10 and top flange 12.
  • the two recesses 121, 101 have on their longitudinal sides in each case an undercut, which engage in the grooves 111, 112 on the core and thus can produce the desired form fit.
  • the individual parts 10, 11 and 12 can be glued or welded together.
  • a sole 100 according to the invention can also be used with a ski 3 in sandwich construction. On the supporting sole 100 in turn edges 13 are arranged. A thin tread 17 made of suitable material is not intrinsically stable. An intermediate layer 14 of two side cheeks and a central support rod is located between a top flange 15, which in turn is covered by a cover layer. According to the present invention, it is essential that the sole 100, which has a thickness of at least 0.5 mm and consists of a composite material of continuous fibers embedded in a thermoplastic material, significantly affects the properties of the ski and by their high stability, a significant weight reduction through the use lighter and less stable materials in the remaining assemblies 14, 15 and 16 allowed.
  • FIG. 6 is shown in a perspective view from above on a front portion of a ski 4 with a number of recesses 122, 123, 124 and 125. These recesses are arranged so that two struts 126, 127 interconnect the laterally extending edge regions 1218, 129. The two struts 126, 127 intersect and form a node in the region of the central longitudinal axis. Since a number of further recesses form further struts, a pattern arises in the front region of the ski that resembles a symmetrically entangled two-strand braid. The blade and the area in front of the formation area of the ski 4, which is shown only partially, have further recesses for weight reduction.
  • FIG. 7 is shown in an enlarged detail, the front end of a ski 5 according to another embodiment.
  • recesses 131, 132, 133, 134 are shown, which are each formed by a plurality of transverse slots, which pass through the ski completely or partially.
  • the recesses 131, 132, 133, 134 in turn form two struts 135, 136 which extend without interruption from the left to the right edge region 137, 138.
  • the two struts 135, 136 intersect at the apex of the curved ski 5.
  • the weight-reducing recesses can be advantageously arranged both in the front and in the rear of the ski. In the illustrated embodiment, only the education remains free of recesses.
  • FIG. 11 In the plan view according to FIG. 11 from the top to the front of the ski 4, as he also in the FIGS. 6 and 8th is shown, an advantageous embodiment of the inventive recess becomes clear.
  • the struts in the planar projection preferably do not run linearly but are each slightly curved in an S-shape. In the FIG. 11 this S-shaped curve is dashed for two shown crossing struts. From the FIG. 11 is yet another type of recesses evident.
  • the recess 90 passes through in the illustrated embodiment such that the upper and the lower opening in the planar projection are not congruent.
  • FIG. 9 Such a recess is shown in the region of the rear end of a ski in a perspective view. The hidden edges are partly drawn fictitious.
  • FIG. 10 is clearly that the upper and lower openings of the recess are arranged approximately mirrored. This results in that the lateral walls 51, 52 of the recess do not run vertically with respect to the lower sliding surface of the ski but are strongly twisted.
  • a torsion about its longitudinal axis. This torsion causes the upper edge 53 and the lower edge 54 to intersect each other in planar projection into a node.
  • FIG. 12 is a ski according to another embodiment shown, in which two weight-saving recess of the type described above are arranged.
  • these recesses can also be arranged next to one another at other locations in the front and rear regions of the ski, or depending on the size, and that the advantages of the novel recesses also apply to other types of snow gliding boards let realize.
  • the recesses can thereby the boards completely or only partially enforce. If the boards are completely penetrated, it is advantageous to tilt the rear walls of the recesses so that the snow is not guided into the recess.

Landscapes

  • Laminated Bodies (AREA)
  • Reinforced Plastic Materials (AREA)
EP20110153117 2010-02-05 2011-02-02 Planche de surf sur neige Not-in-force EP2353670B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1522010A CH702663A2 (de) 2010-02-05 2010-02-05 Schneegleitbrett.

Publications (3)

Publication Number Publication Date
EP2353670A2 true EP2353670A2 (fr) 2011-08-10
EP2353670A3 EP2353670A3 (fr) 2013-05-15
EP2353670B1 EP2353670B1 (fr) 2014-10-15

Family

ID=43971269

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20110153117 Not-in-force EP2353670B1 (fr) 2010-02-05 2011-02-02 Planche de surf sur neige

Country Status (2)

Country Link
EP (1) EP2353670B1 (fr)
CH (1) CH702663A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014117200A1 (fr) * 2013-01-31 2014-08-07 Atomic Austria Gmbh Semelle d'un article de sport d'hiver de type planche
WO2014117199A1 (fr) * 2013-01-31 2014-08-07 Atomic Austria Gmbh Procédé de fabrication d'une semelle d'un article de sport d'hiver de type planche
US20200282291A1 (en) * 2019-03-08 2020-09-10 Völkl Sports Gmbh Sliding board with fiber composite material
US11390008B2 (en) 2017-06-15 2022-07-19 Arkema Inc. Production of semicrystalline parts from pseudo-amorphous polymers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020005203B4 (de) 2020-08-25 2024-02-22 Head Technology Gmbh Gleitbrettkörper sowie Herstellungs- und Recyclingverfahren dafür

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2626778B1 (fr) * 1988-02-09 1990-07-13 Atochem Nouvelles semelles de ski, leur procede de fabrication et skis equipes de ces semelles
AT393458B (de) * 1988-04-27 1991-10-25 Isosport Verbundbauteile Verfahren zum herstellen von laufflaechenbelaegen fuer skier, laufflaechenbauteil fuer alpinskier sowieski mit einem laufflaechenbelag
AT397207B (de) * 1991-09-26 1994-02-25 Isosport Verbundbauteile Verfahren zur herstellung eines bandförmigen skibelagsmaterials aus ultrahochmolekularem polyethylen und skibelag
WO2004067118A1 (fr) * 2003-01-30 2004-08-12 Isosport Verbundbauteile Gesellschaft M.B.H. Revetement de ski en polyethylene comprenant un/des additif(s)
ATE395115T1 (de) * 2004-12-23 2008-05-15 Florian Felix Gleitbelag für wintersportgeräte

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014117200A1 (fr) * 2013-01-31 2014-08-07 Atomic Austria Gmbh Semelle d'un article de sport d'hiver de type planche
WO2014117199A1 (fr) * 2013-01-31 2014-08-07 Atomic Austria Gmbh Procédé de fabrication d'une semelle d'un article de sport d'hiver de type planche
US11390008B2 (en) 2017-06-15 2022-07-19 Arkema Inc. Production of semicrystalline parts from pseudo-amorphous polymers
US11890800B2 (en) 2017-06-15 2024-02-06 Arkema Inc. Production of semicrystalline parts from pseudo-amorphous polymers
US20200282291A1 (en) * 2019-03-08 2020-09-10 Völkl Sports Gmbh Sliding board with fiber composite material
US11452931B2 (en) * 2019-03-08 2022-09-27 Völkl Sports Gmbh Sliding board with fiber composite material

Also Published As

Publication number Publication date
CH702663A2 (de) 2011-08-15
EP2353670A3 (fr) 2013-05-15
EP2353670B1 (fr) 2014-10-15

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