EP3885009B1 - Corps de planche de glisse avec un noyau en bois et des couches de liaison en mousse de pu sous et/ou au-dessus du noyau - Google Patents

Corps de planche de glisse avec un noyau en bois et des couches de liaison en mousse de pu sous et/ou au-dessus du noyau Download PDF

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Publication number
EP3885009B1
EP3885009B1 EP20165635.2A EP20165635A EP3885009B1 EP 3885009 B1 EP3885009 B1 EP 3885009B1 EP 20165635 A EP20165635 A EP 20165635A EP 3885009 B1 EP3885009 B1 EP 3885009B1
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EP
European Patent Office
Prior art keywords
board body
sliding board
wood core
reinforcement
layer
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EP20165635.2A
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German (de)
English (en)
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EP3885009A1 (fr
Inventor
Nikolaus Hotter
Kai HIßBACH
Andreas Ametsbichler
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Head Technology GmbH
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Head Technology GmbH
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    • 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
    • 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

Definitions

  • the present invention relates to a gliding board body, in particular a ski or snowboard body, and a method for producing such a gliding board body.
  • gliding board bodies are also known in which the core consists of a synthetic material, for example polyurethane (PU) foam.
  • PU polyurethane
  • the core consists of both PU foam and a wooden core. The production of such a gliding board body with a PU foam core is significantly cheaper than using a wooden core.
  • the present invention is directed, inter alia, to a gliding board body with a longitudinal axis, which has a wooden core with an upper side, an underside and at least two side surfaces. Furthermore, the gliding board body has at least two side walls connected to the respective side surfaces of the wood core. Above the top of the wood core is a top chord with one or more top chord layers and a top layer, which can also serve as a design support. Below the underside of the wood core is a bottom chord with one or more bottom chord layers and a tread with side edges.
  • a first tie layer is provided which is (i) between the top side of the wood core and the top chord and/or (ii) between the top chord and the cover layer and/or (iii) between a first top chord layer and a second top chord layer (of the several top chord layers) and the respective adjoining layers are glued together.
  • a second connection layer is provided, which is arranged (i) between the underside of the wood core and the lower belt and/or between the lower belt and the tread and/or (iii) between a first lower belt layer and a second lower belt layer (of the several lower belt layers) and the adjacent layers are glued together.
  • the first and/or the second connecting layer has a polyurethane (PU) foam.
  • the invention is based, among other things, on the idea of combining two fundamentally different technologies with one another in order to thus benefit from the advantages of both technologies.
  • the gliding board body according to the invention thus has the mechanical advantages and the value of a gliding board body with a classic wooden core in a sandwich construction.
  • the gliding board body according to the invention can be produced more simply and cost-effectively, since machines that are already known for producing gliding board bodies with a PU core or PU-coated wooden core can be used for this purpose.
  • the present invention is based on producing a sandwich ski using the PU process.
  • the first and/or the second connecting layer has a PU foam and not PU resin as an adhesive (usually an epoxy resin is used for this purpose), as has already been practiced in isolated cases in the prior art Sandwich construction is used. It is a solid foam with gas bubbles separated by solid PU walls. Such a foam has a density of less than 1 g/cm 3 , preferably less than 0.9 g/cm 3 and particularly preferably less than 0.8 g/cm 3 .
  • Such a PU foam can be easily injected with the known PU process into the corresponding gaps between the layers adjoining the connecting layer and also completely fills irregularly shaped gaps, so that a dimensionally stable connection is generated between the individual layers of the gliding board body. Due to the low density of the PU foam, the weight of the gliding board body is not unnecessarily increased.
  • the first connecting layer extends continuously in a cross section perpendicular to the longitudinal axis of the gliding board body from one side panel to the opposite side wall and/or from an outer side edge of the gliding board body to the opposite outer side edge of the gliding board body.
  • the second connecting layer also extends in a cross section perpendicular to the longitudinal axis of the gliding board body continuously from one side wall to the opposite side wall and/or from one side edge of the running surface to the opposite side edge of the running surface and/or from one side edge of the gliding board body to the opposite side edge of the gliding board body.
  • the wood core is connected directly to the side walls on both of its side surfaces, for example glued.
  • the side panels can be made of different materials such as acrylonitrile butadiene styrene copolymers (ABS) or phenol.
  • a connecting layer is arranged between layers A and B does not rule out the connecting layer coming into contact with further layers and adhering these further layers to one another or to one of layers A and B.
  • the first connecting layer between the top of the wood core and the top chord can connect the top chord both to the top of the wood core and to the tops of the side walls.
  • the first connection layer can be in contact both with the first upper belt layer and with the second upper belt layer.
  • the second connecting layer between the underside of the wood core and the underbelt can also be in contact with part of the tread and/or its side edges and/or with the undersides of the sidewalls.
  • the second connection layer can also be in contact with part of the tread and/or its side edges and/or with the undersides of the sidewalls.
  • the maximum thickness of the first and/or second connecting layer is less than the maximum thickness of the wood core, particularly preferably less than the minimum thickness of the wood core.
  • the mechanical properties should primarily be dominated by the wood core, at least along the first longitudinal section of the gliding board body. It's in this
  • connection further preferred that at least along a second longitudinal section of the gliding board body for each cross section perpendicular to the longitudinal axis of the gliding board body, the average thickness of the first and / or second connecting layer is smaller than the average thickness of the wood core.
  • the thickness of the PU foam layer is as thin as possible. However, a certain minimum thickness is required in order to be able to introduce the foam-forming PU material into the appropriate spaces.
  • the average thickness of the first and/or second connecting layer is less than 4 mm, more preferably less than 3 mm and particularly preferably less than 2 mm for each cross section perpendicular to the longitudinal axis of the gliding board body.
  • the ratio of the cross-sectional area of the wood core to the total cross-sectional area of the first and second connecting layer is at least 1.0, preferably at least 1.5 and particularly preferably at least 2. is 0.
  • the first to fourth longitudinal sections are not mutually adjoining sections, but the various longitudinal sections overlap with one another and can also be partially identical.
  • the first longitudinal section preferably extends at least 60%, more preferably at least 70% and most preferably at least 80% of the length of the planing board body (measured from the blade tip to the rear end of the rear end turn).
  • the first longitudinal section preferably extends over at least 80%, more preferably at least 90% and particularly preferably at least 95% of the length of the wood core.
  • the second longitudinal section preferably extends over at least 60%, more preferably at least 70% and particularly preferably at least 80% of the length of the gliding board body.
  • the second longitudinal section preferably extends over at least 80%, more preferably at least 90% and particularly preferably at least 95% of the length of the wood core.
  • the third longitudinal section preferably extends over at least 60%, more preferably at least 70% and particularly preferably at least 80% of the length of the gliding board body.
  • the third longitudinal section preferably extends over at least 80%, more preferably at least 90% and particularly preferably at least 95% of the length of the wood core.
  • the fourth longitudinal section preferably extends over at least 60%, more preferably at least 70% and particularly preferably at least 80% of the length of the gliding board body.
  • the fourth longitudinal section preferably extends over at least 80%, more preferably at least 90% and particularly preferably at least 95% of the length of the wood core.
  • the wood core preferably extends over at most 95%, more preferably at most 90% and particularly preferably at most 85% of the length of the gliding board body and/or over at least 50%, preferably at least 60% and particularly preferably at least 70% of the length of the gliding board body.
  • the present invention is also aimed at a method for producing a gliding board body, in particular a gliding board body as described above.
  • an upper cover layer, an upper belt with one or more upper belt layers, a tread, a lower belt with one or more lower belt layers and a wood core with an upper side, an underside and at least two side surfaces and at least two side walls connected to the respective side surfaces of the wood core are introduced a form such that (i) between the top chord and the top side of the wood core and/or (ii) between the top chord and the cover layer and/or (iii) between a first top chord layer and a second top chord layer there is a first intermediate space and that ( i) there is a second gap between the tread and the underside of the wood core and/or (ii) between the underside of the wood core and the base ply and/or (iii) between a first base ply and a second base ply.
  • a PU material is then injected into the first and second spaces to form a PU foam in the first and second spaces in order to bond the layers adjoining the spaces to one another.
  • the first intermediate space and the second intermediate space are preferably completely filled with PU foam.
  • the first intermediate space also extends between the upper flange and the top side of the respective side panel and/or the second intermediate space also extends between the lower flange and the bottom side of the respective side panel.
  • the side walls are connected, for example glued, to the wood core before being introduced into the mold.
  • the PU material is preferably injected in such a way that the first material front in the first intermediate space moves forward during the injection process at approximately the same speed as the second material front in the second intermediate space. This prevents the geometric arrangement of the individual components within the mold from being jeopardized by a corresponding expansion of the PU foam due to the hasty advance of a material front. It is preferred that the distance in the longitudinal direction of the gliding board body between the first material front and the second material front during the injection process is always less than 10 cm, preferably less than 7 cm and particularly preferably less than 5 cm.
  • the PU material is preferably injected into the interstices from a longitudinal end of the mold.
  • the thickness of the wood core tapers at the front and/or rear end of the wood core.
  • the gliding board body according to the invention can also be used as preferred features within the scope of the manufacturing process and vice versa.
  • the first and second spaces are designed in such a way that the preferred dimensions of the sliding board body according to the invention can be achieved.
  • the average thickness of the first and/or second gap is less than 4 mm, preferably less than 3 mm and particularly preferably less than 2 mm.
  • figure 1 shows a cross section through a gliding board body according to a preferred embodiment of the present invention.
  • An alternative according to a further preferred embodiment is in figure 2 to see.
  • the longitudinal axis of the gliding board body shown extends perpendicularly to the plane of the drawing.
  • the gliding board body has a wooden core 1 with a top 1a, a bottom 1b and two side surfaces 1c. Respective side walls 2 of the gliding board body are connected to the two side surfaces 1c of the wooden core.
  • the side panels 2 are usually glued to the two side surfaces 1c of the wood core 1 .
  • other connection methods are also conceivable.
  • the gliding board body also has a top chord 3 with a first top chord layer 3a and a second top chord layer 3b and a cover layer 3c, which can also serve as a design support, among other things.
  • the first and second upper belt layer can have a different extent in the transverse direction, as shown in figure 1 can be seen, but can also have identical dimensions (cf. e.g figure 6 ).
  • the gliding board body also has a bottom chord 5 with a first bottom chord layer 5a and a second bottom chord layer 5b and a running surface 6 with respective side edges 6a.
  • the first and second bottom chord layer can have an identical extent in the transverse direction, as shown in figure 1 can be seen, but can also have different dimensions (cf. e.g figure 7 ).
  • the top chord 3 (strictly speaking, the complete first top chord layer 3a and part of the second top chord layer 3b) is glued to the top 1a of the wood core 1 and the two side walls 2 by means of a first connecting layer 7.
  • the lower chord 5 (or the first lower chord layer 5a) is glued to the underside 1b of the wood core 1 and the two side walls 2 by means of a second connecting layer 8.
  • the first connecting layer 7 or the second connecting layer 8 or both connecting layers 7 and 8 should have a PU foam.
  • the second connecting layer 8 also glues the underside 1b of the wood core 1 and the two side walls 2 to a part of the tread 6 and its side edges 6a.
  • the first or second connection layer is used to connect the upper or lower chord to the wood core and optionally the side walls.
  • the PU foam according to the invention replaces the resin connection customary in sandwich constructions.
  • the manufacturing process becomes simpler and, accordingly, more cost-effective.
  • PU foam - in contrast to the resins commonly used - is extremely well suited to compensating for corresponding variabilities in the distance between the wood core on the one hand and the upper and lower flanges on the other.
  • the thickness of the first connecting layer 7 varies quite significantly, among other things, because the upper belt 3 (together with the cover layer 4) has a concave section 20, which in the present case is approximately V-shaped. This specific shape of the upper belt 3, the thickness of the first Connection layer 7 in the edge areas may be many times larger than in the central area of the cross section.
  • FIG 4 an embodiment can be seen in which the wood core 1 has a regular pattern of projections 8 and depressions 9 .
  • These projections 8 and depressions 9 are provided both on the upper side 1a and the lower side 1b of the wood core 1 in the illustrated embodiment. However, they could also be provided on only one of the two sides.
  • the use of a conventional resin compound is problematic.
  • the PU foam used within the scope of the present invention easily fills the corresponding depressions 9 in the wooden core 1 and thus ensures a consistently stable connection between the wooden core 1 and the upper chord 3 or the lower chord 5 as well as a corresponding mechanical stability of the gliding board body.
  • first and/or second connecting layer extends continuously from one side panel 2 to the opposite side panel 2 in a cross section perpendicular to the longitudinal axis of the gliding board body.
  • first and/or second connecting layer can be used to compensate for variabilities in the distance between the wood core and the upper chord or lower chord by means of a thick profile
  • first and/or second connecting layer PU foam forms a thin layer of adhesive and does not dominate the mechanical properties, as is the case with conventional PU gliding board bodies.
  • the maximum thickness of the first and/or second connecting layer is smaller than the maximum thickness of the wood core, preferably smaller than the minimum thickness of the wood core.
  • the corresponding Thicknesses are merely exemplary in a cross-section perpendicular to the longitudinal axis of the gliding board body according to FIG figure 3 registered.
  • the maximum thickness D7 max of the first connecting layer 7 and the maximum thickness D8 max of the second connecting layer 8 are each smaller than the maximum thickness D1 max of the wood core 1 and the minimum thickness D1 min of the wood core 1.
  • this relation should not only be according to an illustrated cross section figure 3 apply, but for each cross-section perpendicular to the longitudinal axis of the gliding board body along a certain longitudinal section of the gliding board body, which can extend, for example, over at least 60% of the length of the gliding board body.
  • the ratio of the cross-sectional area of the wood core to the total cross-sectional area of the first and second connecting layer is at least 1.0, preferably at least 1.5 and particularly preferably at least 2. is 0.
  • FIG. 5 shows a longitudinal section through a mold for producing a sliding board body according to the invention.
  • the mold 10 shown essentially consists of an upper mold half 14 and a lower mold half 15, into which the upper and lower flanges (including the cover layer and tread), the wood core 1 and the side walls connected to the respective side surfaces of the wood core 1 are introduced.
  • the course of the mold halves 14 and 15 reflects the three main components of a gliding board body, namely the middle part 11, the blade tip 12 and the rear end 13 Should form 11 of the sliding board body are each enlarged longitudinal sectional drawings in the Figures 5a to 5c pictured.
  • the wood core 1 has a substantially constant thickness (or a thickness that varies only very slightly) in the illustrated embodiment, so that a space with a substantially constant thickness is formed above and below the wood core 1, which in the will be filled with PU foam during the procedure.
  • the cross-section through the sliding board body according to the invention can be at any point of the in Figure 5c shown portion of the central part to be substantially identical and one of the cross sections according to the Figures 1 to 4 correspond.
  • the wood core 1 tapers towards the tip of the blade or the rear end (cf. Figures 5a and 5b ), so that the cross-sections in these edge sections of the central part can vary significantly under certain circumstances.
  • the mold 10 formed by the two mold halves 14 and 15 is closed in the region of the rear end—apart from an outlet (not shown) for the air displaced by the foam (cf. Figure 5b ), whereas in the area of the blade head (cf. Figure 5a ) an inlet 17 for injecting a PU material through the gap 16 into the first gap 18 and the second gap 19 is provided on the top and bottom of the wood core 1, respectively.
  • a PU foam is formed from the PU material in the first space 18 and in the second space 19, so that the upper chord of the gliding board body according to the invention is connected to the upper side of the wooden core 1 and the lower chord of the Gliding board body according to the invention is glued to the underside of the wood core 1.
  • An advantage of the method according to the invention is that it can be carried out using conventional PU foaming systems.
  • a PU high-pressure reaction molding machine HK for processing rigid integral skin foam from the manufacturer Hennecke was used.
  • this machine allows the production of all types of rigid foams and especially integral foams.
  • the integral foam system consisting of Modipur ® US452 black and isocyanate US20 available from Hexcel was used as the PU material. This is a propellant-free system for foams with a high modulus of elasticity.
  • the two components of this integral foam system were mixed in the mixing head at a processing temperature of 28 to 32 °C and the mixture was injected through the injection opening 17 on the blade head (cf.
  • Figure 5a of the mold 10 at a pressure of 140 to 145 bar into the first and second cavities.
  • the mold was heated to a temperature of 50 to 54 °C. After a setting time of approx. 40 to 45 s, the mold halves were separated from one another and the gliding board body was removed from the mould. The entire foam cycle took about 5 to 8 minutes.
  • the viscosity of the mixture during injection is as low as possible to ensure that the PU material can easily penetrate small gaps.
  • the viscosity at 25°C is less than 1000 mPas, more preferably less than 800 mPas and most preferably less than 700 mPas.
  • first connecting layer is provided between the top side of the wood core and the top chord and a second connecting layer is provided between the bottom side of the wood core and the bottom chord.
  • a first connecting layer can also be arranged between the upper belt and the cover layer and/or between a first upper belt layer and a second upper belt layer and a second Connection layer can be arranged between the bottom belt and the tread and/or between a first bottom belt layer and a second bottom belt layer.
  • the first connecting layer 7 is arranged between the upper belt 3 (or the second upper belt layer 3b) and the cover layer 4 and the second connecting layer 8 is arranged between the lower belt 5 (or the second lower belt layer 5b) and the tread 6.
  • the two upper chord layers 3a and 3b and the two lower chord layers 5a and 5b each have identical dimensions, but this is not necessary. However, it is preferred that at least one of the two upper belt layers extends on both sides to the lateral edge of the gliding board body, as is shown in figure 6 you can see.
  • the individual top and bottom belt layers can be connected to one another, for example via a resin layer.
  • the upper and lower belt layers are separated from each other and connected to each other via the two connecting layers. Accordingly, the first connecting layer 7 is arranged between the first upper belt layer 3a and the second upper belt layer 3b and the second connecting layer 8 is arranged between the first lower belt layer 5a and the second lower belt layer 5b.
  • the upper and lower belt layers can have different dimensions than the lower belt layers 5a and 5b or can extend the same distance in the transverse direction as the upper belt layers 3a and 3b.
  • top and bottom belt layers do not have to be treated analogously with regard to their arrangement, as is the case in figures 6 and 7 is shown. Rather, the arrangement of the upper chord layers figure 6 with the arrangement of the lower chord layers figure 7 be combined, etc.

Claims (13)

  1. Corps de planche de glisse avec un axe longitudinal, qui présente:
    un noyau en bois (1) avec un côté supérieur (la), un côté inférieur (1b) et deux faces latérales (1c);
    deux chants latéraux (2) reliés aux faces latérales (1c) respectives du noyau en bois (1);
    un renfort supérieur (3) avec une ou plusieurs lames de renfort supérieur (3a, 3b) au-dessus du côté supérieur (1a) du noyau en bois (1);
    une couche de couverture supérieure (4) au-dessus du renfort supérieur (3);
    un renfort inférieur (5) avec une ou plusieurs lames de renfort inférieur (5a, 5b) au-dessous du côté inférieur (1b) du noyau en bois (1);
    une semelle (6) avec des bordures latérales (6a) au-dessous du renfort inférieur (5);
    une première couche de liaison (7) qui est disposée (i) entre le côté supérieur (1a) du noyau en bois (1) et le renfort supérieur (3) et/ou (ii) entre le renfort supérieur (3) et la couche de couverture (4) et/ou (iii) entre une première lame de renfort supérieur (3a) et une deuxième lame de renfort supérieur (3b) des plusieurs lames de renfort supérieur (3a, 3b) et qui colle entre elles les lames voisines de celle-ci dans chaque cas; et
    une deuxième couche de liaison (8) qui est disposée (i) entre le côté inférieur (1b) du noyau en bois (1) et le renfort inférieur (5) et/ou (ii) entre le renfort inférieur (5a) et la semelle (6) et/ou (iii) entre une première lame de renfort inférieur (5a) et une deuxième lame de renfort inférieur (5b) des plusieurs lames de renfort inférieur (5a, 5b) et qui colle entre elles les lames voisines de celle-ci dans chaque cas;
    où la première et/ou la deuxième couche de liaison (7, 8) présente de la mousse de PU;
    où la première couche de liaison (7) s'étend dans une coupe transversale perpendiculairement à l'axe longitudinal du corps de planche de glisse en continu d'un chant latéral (2) au chant latéral (2) opposé et/ou d'un bord latéral du corps de planche de glisse au bord latéral opposé du corps de planche de glisse, et/ou
    où la deuxième couche de liaison (8) s'étend dans une coupe transversale perpendiculairement à l'axe longitudinal du corps de planche de glisse en continu d'un chant latéral (2) au chant latéral (2) opposé et/ou d'une bordure latérale (6a) de la semelle (6) à la bordure latérale (6a) opposée de la semelle (6) et/ou
    d'un bord latéral du corps de planche de glisse au bord latéral opposé du corps de planche de glisse.
  2. Corps de planche de glisse selon la revendication 1, où au moins le long d'un premier tronçon longitudinal du corps de planche de glisse pour chaque coupe transversale perpendiculairement à l'axe longitudinal du corps de planche de glisse, l'épaisseur maximale de la première et/ou de la deuxième couche de liaison (7, 8) est inférieure à l'épaisseur maximale du noyau en bois (1), de préférence inférieure à l'épaisseur minimale du noyau en bois (1).
  3. Corps de planche de glisse selon l'une des revendications précédentes, où au moins le long d'un deuxième tronçon longitudinal du corps de planche de glisse pour chaque coupe transversale perpendiculairement à l'axe longitudinal du corps de planche de glisse, l'épaisseur moyenne de la première et/ou de la deuxième couche de liaison (7, 8) est inférieure à l'épaisseur moyenne du noyau en bois (1).
  4. Corps de planche de glisse selon l'une des revendications précédentes, où au moins le long d'un troisième tronçon longitudinal du corps de planche de glisse pour chaque coupe transversale perpendiculairement à l'axe longitudinal du corps de planche de glisse, l'épaisseur moyenne de la première et/ou de la seconde couche de liaison (7, 8) est inférieure à 4 mm, de préférence inférieure à 3 mm, de manière particulièrement préférée inférieure à 2 mm.
  5. Corps de planche de glisse selon l'une des revendications précédentes, où au moins le long d'un quatrième tronçon longitudinal du corps de planche de glisse pour chaque coupe transversale perpendiculairement à l'axe longitudinal du corps de planche de glisse, le rapport de la surface en coupe transversale du noyau en bois (1) à la surface en coupe transversale totale de la première et de la deuxième couche de liaison (7, 8) est au moins 1,0, de préférence au moins 1,5 et de manière particulièrement préférée au moins 2,0.
  6. Corps de planche de glisse selon l'une des revendications 2 à 5, où le premier, le deuxième, le troisième et/ou le quatrième tronçon longitudinal s'étend sur au moins 60 %, de préférence au moins 70 %, de manière particulièrement préférée au moins 80 % de la longueur du corps de planche de glisse et/ou où le premier, le deuxième, le troisième et/ou le quatrième tronçon longitudinal s'étend sur au moins 80 %, de préférence au moins 90 %, de manière particulièrement préférée au moins 95 % de la longueur du noyau en bois.
  7. Corps de planche de glisse selon l'une des revendications précédentes, où le noyau en bois (1) s'étend sur au plus 95 %, de préférence au plus 90 %, de manière particulièrement préférée au plus 85 % de la longueur du corps de planche de glisse et/ou sur au moins 50 %, de préférence au moins 60 %, de manière particulièrement préférée au moins 70 % de la longueur du corps de planche de glisse.
  8. Procédé de fabrication d'un corps de planche de glisse, en particulier d'un corps de planche de glisse selon l'une des revendications précédentes, qui présente:
    a) l'introduction d'une couche de couverture supérieure (4), d'un renfort supérieur (3) avec une ou plusieurs lames de renfort supérieur (3a, 3b), d'une semelle (6), d'un renfort inférieur (5) avec une ou plusieurs lames de renfort inférieur (5a, 5b) et d'un noyau en bois (1) avec un côté supérieur (la), un côté inférieur (1b) et deux faces latérales (1c) ainsi que de deux chants latéraux (2) reliés aux faces latérales (1c) respectives du noyau en bois (1) dans un moule (10) de telle sorte que (i) entre le renfort supérieur (3) et le côté supérieur (1a) du noyau en bois (1) et/ou (ii) entre le renfort supérieur (3) et la couche de couverture (4) et/ou (iii) entre une première lame de renfort supérieur (3a) et une deuxième lame de renfort supérieur (3b), il existe un premier espace intermédiaire (18) et en ce que (i) entre la semelle (6) et le côté inférieur (1b) du noyau en bois (1) et/ou (ii) entre le côté inférieur (1b) du noyau en bois (1) et le renfort inférieur (5) et/ou (iii) entre une première lame de renfort inférieur (5a) et une deuxième lame de renfort inférieur (5b) il existe un deuxième espace intermédiaire (19); et
    b) l'injection d'un matériau PU dans le premier et le deuxième espace intermédiaire (18, 19) avec formation d'une mousse de PU dans le premier et le deuxième espace intermédiaire (18, 19) pour coller entre elles les lames voisines des espaces intermédiaires (18, 19) dans chaque cas.
  9. Procédé selon la revendication 8, où le premier espace intermédiaire (18) s'étend dans chaque cas également entre le renfort supérieur (3) et le côté supérieur du chant latéral (2) respectif et/ou dans lequel le deuxième espace intermédiaire (19) s'étend dans chaque cas également entre le renfort inférieur (5) et le côté inférieur du chant latéral (2) respectif.
  10. Procédé selon la revendication 8 ou 9, où les chants latéraux (2) sont reliés au noyau en bois (1) avant l'introduction dans le moule (10).
  11. Procédé selon l'une des revendications 8 à 10, où l'injection du matériau PU a lieu de telle sorte que le premier front de matériau dans le premier espace intermédiaire (18) se déplace vers l'avant pendant le processus d'injection sensiblement aussi vite que le deuxième front de matériau dans le deuxième espace intermédiaire (19), où de préférence la distance dans la direction longitudinale du corps de planche de glisse entre le premier front de matériau et le deuxième front de matériau pendant le processus d'injection est toujours inférieure à 10 cm, de préférence inférieure à 7 cm, de manière particulièrement préférée inférieure à 5 cm.
  12. Procédé selon l'une des revendications 8 à 11, où le matériau PU est injecté dans les espaces intermédiaires (18, 19) depuis une extrémité longitudinale (12; 13) du moule (10).
  13. Procédé selon l'une des revendications 8 à 12, où l'épaisseur du noyau en bois (1) se rétrécit à l'extrémité antérieure et/ou postérieure du noyau en bois.
EP20165635.2A 2020-03-25 2020-03-25 Corps de planche de glisse avec un noyau en bois et des couches de liaison en mousse de pu sous et/ou au-dessus du noyau Active EP3885009B1 (fr)

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EP20165635.2A EP3885009B1 (fr) 2020-03-25 2020-03-25 Corps de planche de glisse avec un noyau en bois et des couches de liaison en mousse de pu sous et/ou au-dessus du noyau

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EP20165635.2A EP3885009B1 (fr) 2020-03-25 2020-03-25 Corps de planche de glisse avec un noyau en bois et des couches de liaison en mousse de pu sous et/ou au-dessus du noyau

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EP3885009B1 true EP3885009B1 (fr) 2022-03-23

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO870539L (no) * 1986-02-21 1987-08-24 Rohrmoser Alois Skifabrik Forsterkningselement for inkorporering i en harpiks og anvendelse av dette elementet.
FR2611518B1 (fr) * 1987-02-27 1989-11-17 Salomon Sa Ski a amortissement reparti
DE4322300C2 (de) * 1992-07-16 2002-12-19 Atomic Austria Gmbh Altenmarkt Ski mit einer Schale, einem Untergurt sowie einem vorzugsweise in die Schale integrierten Obergurt und Verfahren zum Herstellen eines Skis
FR2703915B1 (fr) * 1993-04-16 1995-06-02 Rossignol Sa Ski comportant des chants et une coque supérieure.
FR2847483B1 (fr) * 2002-11-22 2004-12-24 Rossignol Sa Planche de glisse et procede de fabrication d'une telle planche de glisse

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