EP0630667A2 - Method of manufacturing a ski and device to carry out this method - Google Patents

Method of manufacturing a ski and device to carry out this method Download PDF

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Publication number
EP0630667A2
EP0630667A2 EP94108721A EP94108721A EP0630667A2 EP 0630667 A2 EP0630667 A2 EP 0630667A2 EP 94108721 A EP94108721 A EP 94108721A EP 94108721 A EP94108721 A EP 94108721A EP 0630667 A2 EP0630667 A2 EP 0630667A2
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EP
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Prior art keywords
shell
shell material
ski
mould
mold
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EP94108721A
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German (de)
French (fr)
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EP0630667A3 (en
Inventor
Franz Schenner
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Blizzard GmbH
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Blizzard GmbH
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Publication date
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Publication of EP0630667A2 publication Critical patent/EP0630667A2/en
Publication of EP0630667A3 publication Critical patent/EP0630667A3/xx
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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

Definitions

  • the invention relates to a method for producing skis with a sliding surface, a core and a surface shell. Furthermore, the invention relates to a device which is produced according to this method.
  • a method for producing a ski has become known, in which a shell material forming the side surfaces and surface is placed flat over a counter mold and is pressed into the counter mold by the prefabricated core after heating. This pressing process plastically deforms the shell material (which can also consist of several layers, such as reinforcing layers or thermoplastic filler materials) into the desired final contour or with the formation of ridges or depressions on the outside of the ski.
  • the shell material which can also consist of several layers, such as reinforcing layers or thermoplastic filler materials
  • DE-A-39 14 189 describes a method for producing a ski in which a cover layer which forms the side surface and surface consists of a preformed thermoplastic shell or layers which are flexible at ambient pressure and temperature. Both the thermoplastic shell, in the course of thermoforming, and the layers which are flexible before the final molding process at ambient pressure and ambient temperature, in the course of the pressing process, are subjected to a plastic deformation.
  • a disadvantage of the processes described is that only processes and materials can be used for printing on the shell materials, which usually takes place before plastic forming, which allow plastic deformation (flow of the shell material) in sufficient form.
  • DE-C 38 03 483 a process in which this decoration is carried out by supplementation (thermal diffusion printing).
  • the printing of the flat shell material before the deformation can also be carried out conventionally using the screen printing process if appropriate elastic screen printing inks are used.
  • the selection of the applicable colors in this process is very limited and the print sharpness in the two described decoration processes is very different due to the subsequent thermoplastic flow of the shell material, so that only simple and not sharply delimited designs can be used.
  • EP 0 498 963 in turn describes a method for producing a ski, in which an upper part element consisting of a stretchable outer skin with a small thickness and elasticity consists of a lower part element consisting of a tread covering, lateral steel edges, a core and upper and lower flange Synthetic resin foam is arranged, the synthetic resin foam being arranged between the stretchable outer skin. Due to the fact that the material has to be stretchable for the outer skin, it is also not possible with this process to use customary design processes in ski construction, e.g. to use the screen printing process or the shell material must always be preformed in a separate operation.
  • EP 0 526 353 A1 describes a method for producing a ski in which a shell material is pressed against the contour of the upper molded part via the driving force of the foam system.
  • the disadvantage of this method is that the shell material has to be preformed accordingly in a separate operation so that during the subsequent molding process the filler (foam) cannot escape into the space between the upper part of the mold and the shell material.
  • the shell material Due to the fact that the geometry of the shell to be pre-shaped varies over the length of the ski, the shell material must be pre-shaped thermoplastic (i.e. flowing), which is why the partially necessary flow of the shell material must be taken into account when designing the design. In the case of these processes as well, as in the previously described processes, this leads to a severe restriction of the printing processes and printing inks.
  • the object of the present invention is to develop a method of the type mentioned at the outset such that no thermoplastic or plastic deformation of the shell material is necessary when shaping the ski shell, so that the above-mentioned restrictions due to the printing method no longer apply or are not necessary to pre-deform the shell material accordingly three-dimensionally.
  • a generic method for producing a shell ski is used according to the invention, which has the method steps mentioned in the characterizing part of the main claim. This allows the shell material forming the side and surface to adapt to the contour given by the shape during the shaping of the surface and side surface structure without elastic or thermoplastic or thermoset deformation.
  • the ski is preferably produced using the polyurethane injection process or another mold filling process which has sufficient expansion pressure of the filler to form the shell material or the composite, as described below, against the inner contour of the upper molded part.
  • the shell material can be in the area of the surface reinforcement materials along the length of the ski.
  • the reinforcing materials are either previously glued to the shell material or glued in a punctiform manner and subsequently connected to the shell material during the mold filling process or reinforced by belt materials which are permeable to the filling material and are placed near the surface of the shell via spacers.
  • 1 denotes an upper part of an outer shape or foam shape, which is used to produce a ski when interacting with a lower part 2 of the outer shape or foam shape.
  • the later shell material 3 forming the ski side and surface is provided in the central region with a reinforcement 4, preferably made of epoxy fiber glass, epoxy prepreg, aluminum, carbon laminate, etc.
  • the surface of this composite can be transparent with printing on the back or opaque or colored with printing on the top and is preferably provided on the surface with a protective or release film which is removed after the ski has been removed from the mold or finished.
  • the shell composite 3, 4 forms a cover lying parallel over the ski substructure, consisting of the running surface 6, steel edges 7, lower flange 8.
  • the lower flange 8 can consist, for example, of epoxy fiberglass, epoxy prepreg, aluminum, spring steel or glass mats, etc.
  • the ski completed with the device according to FIG. 1 is shown in section in FIG. 2 lying in the device. It can be seen here that the shell composite 3, 4 is pressed against the inner contour of the upper part of the outer mold during the mold filling process by the expansion pressure of the filling material 9, the shell material 3 being simultaneously pulled inwards in the lateral grooves between the upper and lower parts of the mold. In this way, there is no plastic deformation (flowing deformation) of the shell material, so that the design of the shell material already applied to the top and bottom sides in the printing process is changed or destroyed in the course of shaping the end contour of the side and surfaces.
  • FIG. 3 Another possibility of producing a ski using this method is shown in FIG. 3.
  • the reinforcement 10 applied to the shell material 3 in the central region is connected to the shell material only at points with spacers 11 and is connected to the surface of the filling material 9 during the mold filling process.
  • the embodiment shown in FIG. 4 shows a ski manufactured according to a modified method.
  • the reinforcement layer 12 arranged in the middle region of the shell material 3 over the ski length is perforated here or permeable to the film material and is pressed against the shell material via spacers 13.
  • the reinforcement layer is then pressed against the upper mold part 1 by the expansion pressure of the filler material 9 with the shell material 3, the filler material 9 also penetrating through the reinforcement layer 12 and connecting the reinforcement layer 12 to the shell.
  • the reinforcement layer 12 e.g. perforated spring steel or correspondingly stiff reinforcement fabric that is sufficiently permeable to the filling material can be used.
  • depressions and / or elevations of the inner surface of the outer mold 1 can be formed by mold parts which can be laid, as is indicated schematically in FIG. 5 by 14.
  • Molding 14 would thus be possible to provide an additional increase in the surface area in the central area of the ski, it being immediately apparent from this that various covers, the areas corresponding to the depressions 15 and 16, provide a wide variety of three-dimensional designs of the surface structure of the surface shell 3 completed skis are achievable.
  • the surface of the shell material 3 can be structured if the inner surface of the outer mold 1 is provided with a corresponding structure 17.
  • these structures 17 can be, for example, wood or leather grain, or fish scale-like shapes, longitudinal grooves or cross-edging or the like. In addition to the optical effect, this also achieves the technical advantage of higher abrasion resistance.

Abstract

In a method of manufacturing a ski, a partially reinforced surface shell material is horizontally inserted into the mould between the mould upper part and the mould lower part or is laterally guided between the mould upper part and the mould lower part in a groove which is so designed that the shell material or composite can move during the mould filling operation and unmould, without plastic deformation, the contour exactly predetermined by the inner surface of the mould upper part. The surface shell material used in this method is reinforced with high-strength materials, preferably partially, but in the middle region over the length of the ski. In a device for implementing the method, recesses or protuberances of the inner surface of the outer mould are formed by insertable mould parts.

Description

Die Erfindung bezieht sich auf ein Verfahren zur Herstellung von Ski mit einer Gleitfläche, einem Kern und einer Oberflächenschale. Weiterhin bezieht sich die Erfindung auf eine Vorrichtung, die gemäß diesem Verfahren hergestellt ist.The invention relates to a method for producing skis with a sliding surface, a core and a surface shell. Furthermore, the invention relates to a device which is produced according to this method.

Aus der DE-C 38 03 483 ist ein Verfahren zur Herstellung eines Ski bekanntgeworden, bei welchem ein die Seitenflächen und Oberfläche bildendes Schalenmaterial flach über eine Gegenform gelegt und durch den vorgefertigten Kern nach Erwärmung in die Gegenform gepreßt wird. Durch diesen Preßvorgang wird das Schalenmaterial ( das auch aus mehreren Schichten, wie z.B. Verstärkungsschichten bzw. thermoplastischen Füllmaterialien bestehen kann) plastisch in die gewünschte Endkontur bzw. mit Ausbildung von Erhöhungen oder Vertiefungen an der Außenseite des Ski verformt.From DE-C 38 03 483 a method for producing a ski has become known, in which a shell material forming the side surfaces and surface is placed flat over a counter mold and is pressed into the counter mold by the prefabricated core after heating. This pressing process plastically deforms the shell material (which can also consist of several layers, such as reinforcing layers or thermoplastic filler materials) into the desired final contour or with the formation of ridges or depressions on the outside of the ski.

Die DE-A-39 14 189 wiederum beschreibt ein Verfahren zur Herstellung eines Ski, bei dem eine, die Seitenfläche und Oberfläche bildende Deckschicht als vorgeformte Thermoplastschale oder bei Umgebungsdruck und Umgebungstemperatur flexiblen Schichten besteht. Sowohl die Thermoplastschale, im Zuge des Thermoformens, als auch die vor dem endgültigen Formvorgang bei Umgebungsdruck und Umgebungstemperatur flexiblen Schichten, im Zuge des Verpreßvorgangs, werden einer plastischen Verformung unterzogen.DE-A-39 14 189, in turn, describes a method for producing a ski in which a cover layer which forms the side surface and surface consists of a preformed thermoplastic shell or layers which are flexible at ambient pressure and temperature. Both the thermoplastic shell, in the course of thermoforming, and the layers which are flexible before the final molding process at ambient pressure and ambient temperature, in the course of the pressing process, are subjected to a plastic deformation.

Ein Nachteil dieser beschriebenen Verfahren ist es, daß für die Bedruckung der Schalenmateralien, die üblicherweise vor dem plastischen Umformen erfolgt, nur Verfahren und Materialien eingesetzt werden können, die eine plastische Verformung (Fließen des Schalenmaterials) in ausreichender Form erlauben. So beschreibt z.B. die DE-C 38 03 483 ein Verfahren, bei dem diese Dekorierung durch Supplimation (Thermodiffusionsdruck) erfolgt. Die Bedruckung des ebenen Schalenmaterials vor der Verformung kann jedoch auch herkömmlich im Siebdruckverfahren erfolgen, wenn entsprechende elastische Siebdruckfarben angewandt werden. Allerdings ist bei diesem Verfahren die Auswahl der anwendbaren Farben sehr begrenzt und die Druckschärfe bei beiden beschriebenen Dekorationsverfahren durch das nachfolgende thermoplastische Fließen des Schalenmaterials sehr unterschiedlich, so daß nur einfache und nicht scharf abgegrenzte Gestaltungen angewandt werden können.A disadvantage of the processes described is that only processes and materials can be used for printing on the shell materials, which usually takes place before plastic forming, which allow plastic deformation (flow of the shell material) in sufficient form. For example, DE-C 38 03 483 a process in which this decoration is carried out by supplementation (thermal diffusion printing). However, the printing of the flat shell material before the deformation can also be carried out conventionally using the screen printing process if appropriate elastic screen printing inks are used. However, the selection of the applicable colors in this process is very limited and the print sharpness in the two described decoration processes is very different due to the subsequent thermoplastic flow of the shell material, so that only simple and not sharply delimited designs can be used.

Die EP 0 498 963 beschreibt wiederum ein Verfahren zur Herstellung eines Ski, bei dem auf ein aus einem Laufflächenbelag, seitlichen Stahlkanten, einem Kern und Ober- und Untergurt bestehenden untenliegenden Teilelement, ein oberes Teilelement, das aus einer dehnbaren Außenhaut mit geringer Dicke und elastischem Kunstharzschaum besteht, angeordnet wird, wobei der Kunstharzschaum zwischen der dehnbaren Außenhaut angeordnet wird. Bedingt durch die Tatsache, daß das Material für die Außenhaut dehnbar sein muß, ist es auch bei diesem Verfahren nicht möglich, im Skibau übliche Gestaltungsverfahren, wie z.B. das Siebdruckverfahren einzusetzen bzw. muß das Schalenmaterial in einem eigenen Arbeitsgang grundsätzlich vorgeformt werden.EP 0 498 963 in turn describes a method for producing a ski, in which an upper part element consisting of a stretchable outer skin with a small thickness and elasticity consists of a lower part element consisting of a tread covering, lateral steel edges, a core and upper and lower flange Synthetic resin foam is arranged, the synthetic resin foam being arranged between the stretchable outer skin. Due to the fact that the material has to be stretchable for the outer skin, it is also not possible with this process to use customary design processes in ski construction, e.g. to use the screen printing process or the shell material must always be preformed in a separate operation.

Die EP 0 526 353 A1 beschreibt ein Verfahren zur Herstellung eines Ski, bei dem ein Schalenmaterial über die Treibkraft des Schaumsystems gegen die Kontur des oberen Formteils gedrückt wird. Der Nachteil dieses Verfahrens ist, daß das Schalenmaterial in einem eigenen Arbeitsgang entsprechend vorgeformt werden muß, damit beim nachfolgenden Formvorgang kein Austritt des Füllmittels (Schaum) in den Zwischenraum zwischen Formoberteil und Schalenmaterial erfolgen kann. Bedingt durch die Tatsache, daß die Geometrie der vorzuformenden Schale über die Skilänge unterschiedlich ist, muß das Schalenmaterial thermoplastisch (d.h. fließend) vorgeformt werden, weshalb bei der Gestaltung des Designs das teilweise notwendige Fließen des Schalenmaterials berücksichtigt werden muß. Dies führt auch bei diesen Verfahren genauso wie bei den vorher beschriebenen Verfahren zu einer starken Einschränkung der Druckverfahren und Druckfarben.EP 0 526 353 A1 describes a method for producing a ski in which a shell material is pressed against the contour of the upper molded part via the driving force of the foam system. The disadvantage of this method is that the shell material has to be preformed accordingly in a separate operation so that during the subsequent molding process the filler (foam) cannot escape into the space between the upper part of the mold and the shell material. Due to the fact that the geometry of the shell to be pre-shaped varies over the length of the ski, the shell material must be pre-shaped thermoplastic (i.e. flowing), which is why the partially necessary flow of the shell material must be taken into account when designing the design. In the case of these processes as well, as in the previously described processes, this leads to a severe restriction of the printing processes and printing inks.

Aufgabe der vorliegenden Erfindung ist es, ein Verfahren der eingangs genannten Art dahingehend weiterzubilden, daß bei der Ausformung der Skischale kein thermoplastisches oder plastisches Verformen des Schalenmaterials notwendig ist, so daß die oben erwähnten Einschränkungen durch das Bedruckungsverfahren nicht mehr gelten bzw. es nicht notwendig ist, das Schalenmaterial entsprechend dreidimensional vorzuverformen.The object of the present invention is to develop a method of the type mentioned at the outset such that no thermoplastic or plastic deformation of the shell material is necessary when shaping the ski shell, so that the above-mentioned restrictions due to the printing method no longer apply or are not necessary to pre-deform the shell material accordingly three-dimensionally.

Zur Lösung dieser Aufgabe wird erfindungsgemäß ein gattungsgemäßes Verfahren zur Herstellung eines Schalenski angewandt, welches die im kennzeichnenden Teil des Hauptanspruchs genannten Verfahrensschritte aufweist. Dieses erlaubt es dem, die Seite und Oberfläche bildenden Schalenmaterial, sich während des Ausformens der Oberflächen- und Seitenflächenstruktur ohne elastische bzw. thermoplastische oder duromere Verformung der durch die Form vorgegebenen Kontur anzupassen.To achieve this object, a generic method for producing a shell ski is used according to the invention, which has the method steps mentioned in the characterizing part of the main claim. This allows the shell material forming the side and surface to adapt to the contour given by the shape during the shaping of the surface and side surface structure without elastic or thermoplastic or thermoset deformation.

Vorzugsweise erfolgt bei diesen Verfahren die Herstellung des Ski im Polyurethaninjektionsverfahren bzw. einem anderen Formfüllverfahren, das ausreichenden Expansionsdruck des Füllmittels aufweist, um das Schalenmaterial bzw. den Verbund, wie nachfolgend beschrieben, gegen die innere Kontur des oberen Formteils auszuformen.In these processes, the ski is preferably produced using the polyurethane injection process or another mold filling process which has sufficient expansion pressure of the filler to form the shell material or the composite, as described below, against the inner contour of the upper molded part.

Damit eine ausreichende Festigkeit des nach diesem Verfahren hergestellten Ski erreicht wird, kann das Schalenmaterial im Bereich der Oberfläche über die Skilänge mit Verstärkungsmaterialen versehen werden. Die Verstärkungsmaterialien werden entweder vorher mit dem Schalenmaterial verklebt bzw. punktförmig verklebt und nachfolgend beim Formfüllvorgang mit dem Schalenmaterial verbunden bzw. durch, für das Füllmaterial durchlässige Gurtenmaterialien, die über Distanzhalter nahe der Schalenoberfläche plaziert werden, verstärkt.In order for the ski produced by this method to have sufficient strength, the shell material can be in the area of the surface reinforcement materials along the length of the ski. The reinforcing materials are either previously glued to the shell material or glued in a punctiform manner and subsequently connected to the shell material during the mold filling process or reinforced by belt materials which are permeable to the filling material and are placed near the surface of the shell via spacers.

Bevorzugte Ausgestaltungen des Verfahrens sind in den sich an den Hauptanspruch anschließenden Unteransprüchen wiedergegeben.Preferred embodiments of the method are given in the subclaims following the main claim.

Eine bevorzugte Vorrichtung zur Durchführung des Verfahrens ergibt sich jeweils aus den Ansprüchen 5 bzw. 6.A preferred device for carrying out the method results from claims 5 and 6, respectively.

Weiter Einzelheiten und Vorteile der Erfindung werden anhand von in der Zeichnung schematisch dargestellten Ausführungsbeispielen von für die Durchführung des Verfahrens geeigneten Vorrichtungen sowie von durch dieses Verfahren erhaltenen Ski erläutert.Further details and advantages of the invention are explained on the basis of exemplary embodiments schematically shown in the drawing of devices suitable for carrying out the method and of skis obtained by this method.

Es zeigen:

  • Fig. 1: einen schematischen Schnitt eine Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens,
  • Fig. 2: einen schematischen Schnitt durch die Vorrichtung gemäß Fig. 1 mit darin eingesetzten fertiggestellten Ski,
  • Fig. 3: eine andere Vorrichtung zur Ausführung eines anderen Ausführungsbeispiels des erfindungsgemäßen Verfahrens in schematischem Schnitt,
  • Fig. 4: einen Schnitt durch eine weitere Ausführungsform einer Vorrichtung zur Durchführung eines alternativen Verfahrens,
  • Fig. 5: einen schematischen Schnitt durch eine modifizierte Vorrichtung zur Durchführung einer weiteren Ausführungsform des erfindungsgemäßen Verfahrens und
  • Fig. 6: einen schematischen Schnitt durch eine modifizierte Vorrichtung für eine weitere Ausführungsform des erfindungsgemäßen Verfahrens.
Show it:
  • 1 shows a schematic section of a device for performing the method according to the invention,
  • 2: a schematic section through the device according to FIG. 1 with the finished ski inserted therein,
  • 3: another device for carrying out another embodiment of the method according to the invention in a schematic section,
  • 4 shows a section through a further embodiment of a device for carrying out an alternative method,
  • 5: shows a schematic section through a modified device for carrying out a further embodiment of the method according to the invention and
  • 6: a schematic section through a modified device for a further embodiment of the method according to the invention.

In der in Fig. 1 dargestellten Ausführungsform ist mit 1 ein Oberteil einer Außenform bzw. Schäumform bezeichnet, welcher beim Zusammenwirken mit einem Unterteil 2 der Außenform bzw. der Schäumform zur Herstellung eines Ski eingesetzt wird. Das spätere die Skiseiten- und -oberfläche bildende Schalenmaterial 3 ist im Mittelbereich mit einer verstärkung 4 vorzugsweise aus Epoxifiberglas, Epoxiprepreg, Aluminium, Carbonlaminat usw. versehen. Die Oberfläche dieses Verbundes kann transparent mit rückseitiger Bedruckung bzw. opak oder eingefärbt mit obenseitiger Bedruckung ausgeführt sein und ist vorzugsweise an der Oberfläche mit einer Schutz- oder Trennfolie versehen, die nach dem Entformen bzw. der Endbearbeitung des Ski abgezogen wird. Der Schalenverbund 3, 4 bildet erfindungsgemäß einen parallel über den Skiunteraufbau, bestehend aus Lauffläche 6, Stahlkanten 7, Untergurt 8 liegenden Deckel.In the embodiment shown in FIG. 1, 1 denotes an upper part of an outer shape or foam shape, which is used to produce a ski when interacting with a lower part 2 of the outer shape or foam shape. The later shell material 3 forming the ski side and surface is provided in the central region with a reinforcement 4, preferably made of epoxy fiber glass, epoxy prepreg, aluminum, carbon laminate, etc. The surface of this composite can be transparent with printing on the back or opaque or colored with printing on the top and is preferably provided on the surface with a protective or release film which is removed after the ski has been removed from the mold or finished. According to the invention, the shell composite 3, 4 forms a cover lying parallel over the ski substructure, consisting of the running surface 6, steel edges 7, lower flange 8.

Der Untergurt 8 kann auf beispielsweise aus Epoxifiberglas, Epoxiprepreg, Aluminium, Federstahl oder Glasmatten usw. bestehen. Der mit Vorrichtung gemäß Fig. 1 fertiggestellte Ski ist in Fig. 2 in der Vorrichtung liegend im Schnitt dargestellt. Hier zeigt sich, daß der Schalenverbund 3, 4 beim Formfüllvorgang durch den Expansionsdruck des Füllmaterials 9 gegen die Innenkontur des Oberteils der Außenform gedrückt wird, wobei gleichzeitig das Schalenmaterial 3 in den seitlichen Nuten zwischen Formober- und -unterteil nach innen gezogen wird. Auf diese Weise kommt es zu keiner plastischen Deformation (fließenden Verformung) des Schalenmaterials, so daß das bereits im Druckverfahren ober- und unterseitig aufgebrachte Design des Schalenmaterials im Zuge der Ausformung der Endkontur von Seiten- und Oberflächen verändert oder zerstört wird.The lower flange 8 can consist, for example, of epoxy fiberglass, epoxy prepreg, aluminum, spring steel or glass mats, etc. The ski completed with the device according to FIG. 1 is shown in section in FIG. 2 lying in the device. It can be seen here that the shell composite 3, 4 is pressed against the inner contour of the upper part of the outer mold during the mold filling process by the expansion pressure of the filling material 9, the shell material 3 being simultaneously pulled inwards in the lateral grooves between the upper and lower parts of the mold. In this way, there is no plastic deformation (flowing deformation) of the shell material, so that the design of the shell material already applied to the top and bottom sides in the printing process is changed or destroyed in the course of shaping the end contour of the side and surfaces.

Eine andere Möglichkeit, einen Ski nach diesem Verfahren herzustellen, ist in Fig. 3 dargestellt. Die im Mittelbereich am Schalenmaterial 3 aufgebrachte Verstärkung 10 wird nur punktförmig mit Abstandhaltern 11 mit dem Schalenmaterial verbunden und beim Formfüllvorgang mit dem Füllmaterial 9 oberflächig verbunden.Another possibility of producing a ski using this method is shown in FIG. 3. The reinforcement 10 applied to the shell material 3 in the central region is connected to the shell material only at points with spacers 11 and is connected to the surface of the filling material 9 during the mold filling process.

Die in der Fig. 4 dargestellte Ausführungsform zeigt einen nach einem modifizierten Verfahren hergestellten Ski. Die im Mittelbereich des Schalenmaterials 3 über die Skilänge angeordnete Verstärkungslage 12 ist hier perforiert bzw. für das Filmmaterial durchlässig und wird über Distanzhalter 13 gegen das Schalenmaterial angedrückt. Beim Formfüllvorgang wird dann die Verstärkungslage durch den Expansionsdruck des Füllmaterials 9 mit dem Schalenmaterial 3 gegen den Formoberteil 1 gedrückt, wobei das Füllmaterial 9 auch durch die Verstärkungslage 12 dringt und die Verstärkungslage 12 mit der Schale verbindet. Als Verstärkungslage 12 kann z.B. perforierter Federstahl oder entsprechend steifes und für das Füllmaterial ausreichend durchlässiges Verstärkungsgewebe eingesetzt werden. Als Distanzhalter 13 kann z.B. ein dreidimensionales, leicht zusammendrückbares Gewebe aus Polyester, Glasfaser, Polyamidfasern und Stahldrähten fungieren.The embodiment shown in FIG. 4 shows a ski manufactured according to a modified method. The reinforcement layer 12 arranged in the middle region of the shell material 3 over the ski length is perforated here or permeable to the film material and is pressed against the shell material via spacers 13. During the mold filling process, the reinforcement layer is then pressed against the upper mold part 1 by the expansion pressure of the filler material 9 with the shell material 3, the filler material 9 also penetrating through the reinforcement layer 12 and connecting the reinforcement layer 12 to the shell. As the reinforcement layer 12 e.g. perforated spring steel or correspondingly stiff reinforcement fabric that is sufficiently permeable to the filling material can be used. As a spacer 13, e.g. a three-dimensional, easily compressible fabric made of polyester, glass fiber, polyamide fibers and steel wires act.

Um eine Anpassung an unterschiedliche geometrische Anforderungen hinsichtlich der Oberflächengestaltung zu ermöglichen, können, wie in Fig. 5 dargestellt, Vertiefungen und/oder Erhebungen der Innenfläche der Außenform 1 durch enlegbare Formteile gebildet sein, wie dies schematisch in Fig. 5 mit 14 angedeutet ist. Durch Wegnahme des Formteils 14 wäre es somit möglich, eine zusätzliche Erhöhung der Oberfläche im zentralen Bereich des Ski vorzusehen, wobei daraus unmittelbar einsichtig ist, daß durch verschiedene Abdeckungen, der den Vertiefungen zu 15 bzw. 16 entsprechenden Bereiche, unterschiedlichster dreidimensionale Gestaltungen der Oberflächenstruktur der Oberflächenschale 3 beim fertiggestellten Ski erzielbar sind. Weiters kann die Oberfläche des Schalenmaterials 3 strukturiert werden, wenn die Innenfläche der Außenform 1 mit einer entsprechenden Struktur 17 versehen wird. Durch den Expansionsdruck des Füllmaterials 9 wird die Oberfläche des Schalenmaterials 3 in die struktierierte Innenfläche der Außenform 17 gepreßt, die sich nach dem Aushärten oder Erstarren des Füllmaterials 9 an der Oberfläche abbildet, wie dies in Fig. 6 dargestellt ist. Diese Strukturen 17 können z.B. Holz- oder Ledernarbungen, oder fischschuppenartige Ausformungen, Längsrillen oder Kreuzrandrierungen oder dergleichen sein. Dadurch wird neben der optischen Wirkung auch noch der technische Vorteil einer höheren Abriebfestigkeit erreicht.In order to enable adaptation to different geometric requirements with regard to the surface design, as shown in FIG. 5, depressions and / or elevations of the inner surface of the outer mold 1 can be formed by mold parts which can be laid, as is indicated schematically in FIG. 5 by 14. By removing the Molding 14 would thus be possible to provide an additional increase in the surface area in the central area of the ski, it being immediately apparent from this that various covers, the areas corresponding to the depressions 15 and 16, provide a wide variety of three-dimensional designs of the surface structure of the surface shell 3 completed skis are achievable. Furthermore, the surface of the shell material 3 can be structured if the inner surface of the outer mold 1 is provided with a corresponding structure 17. Due to the expansion pressure of the filling material 9, the surface of the shell material 3 is pressed into the structured inner surface of the outer mold 17, which is shown on the surface after the filling material 9 has hardened or solidified, as shown in FIG. 6. These structures 17 can be, for example, wood or leather grain, or fish scale-like shapes, longitudinal grooves or cross-edging or the like. In addition to the optical effect, this also achieves the technical advantage of higher abrasion resistance.

Claims (6)

1. Verfahren zur Herstellung von Ski mit einer Gleitfläche, einem Kern und einer Oberflächenschale, dadurch gekennzeichnet, daß ein horizontal zwischen Formober- und -unterteil eingelegtes Oberflächenschalenmaterial bzw. ein Oberflächenschalenverbund seitlich zwischen dem vom Oberteil und dem Formunterteil in einer derart gestalteten Nut geführt wird, daß es dem Schalenmaterial bzw. Schalenverbund möglich ist, sich während des Formfüllvorgangs zu bewegen und die durch die Innenfläche des Formoberteils exakt vorgegebene Kontur ohne plastische Deformation des Schalenmaterials auszuformen.1. A process for the production of skis with a sliding surface, a core and a surface shell, characterized in that a surface shell material or a surface shell composite inserted horizontally between the upper and lower mold part or a surface shell composite is guided laterally between the upper part and the lower part in such a groove that the shell material or shell composite is able to move during the mold filling process and to shape the contour which is exactly predetermined by the inner surface of the upper mold part without plastic deformation of the shell material. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die eingesetzte Oberflächenschale teilweise, bevorzugt jedoch im Mittelbereich über die Skilänge mit Materialien hoher Festigkeit (E-Modul > 6.000 N/mm2) verstärkt ist.2. The method according to claim 1, characterized in that the surface shell used is partially, but preferably in the central region over the ski length reinforced with materials of high strength (modulus of elasticity> 6,000 N / mm 2 ). 3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die eingesetzte Verstärkung punktförmig mit Abstandhaltern am Schalenmaterial befestigt wird und nachfolgend im Zuge des Formfüllvorgangs mit dem Schalenmaterial vollflächig verbunden wird.3. The method according to claim 1 or 2, characterized in that the reinforcement used is point-fixed with spacers on the shell material and is subsequently connected over the entire area in the course of the mold filling process with the shell material. 4. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß ein für das Füllmaterial durchlässiges Verstärkungsmaterial über Distanzhalter gegen das Schalenmaterial gedrückt wird und das Füllmaterial im Zuge des Formfüllvorgangs durch das Verstärkungsmaterial dringt und das Verstärkungsmaterial mit dem Schalenmaterial verbindet.4. The method according to claim 1 or 2, characterized in that a permeable for the filling material reinforcing material is pressed via spacers against the shell material and the filling material penetrates through the reinforcing material in the course of the mold filling process and connects the reinforcing material with the shell material. 5. Vorrichtung zur Durchführung eines Verfahrens nach einem der Ansprüche 1-4, dadurch gekennzeichnet, daß Vertiefungen und/oder Erhebungen der Außenschale von austauschbaren Einlegeformteilen gebildet sind.5. A device for performing a method according to any one of claims 1-4, characterized in that depressions and / or elevations of the outer shell are formed by interchangeable insert moldings. 6. Vorrichtung zur Durchführung eines Verfahrens nach einem der Ansprüche 1-4, dadurch gekennzeichnet, daß die Innenflächen der Außenform mit Strukturen versehen sind, die sich dann nach dem Aushärten oder Erstarren des Füllmaterials an der Oberfläche abbilden.6. Device for carrying out a method according to any one of claims 1-4, characterized in that the inner surfaces of the outer shape are provided with structures which then form on the surface after the filling material has hardened or solidified.
EP94108721A 1993-06-09 1994-06-07 Method of manufacturing a ski and device to carry out this method Withdrawn EP0630667A2 (en)

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DE4319245 1993-06-09
DE19934319245 DE4319245A1 (en) 1993-06-09 1993-06-09 Method for producing a ski, and device for carrying out this method

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FR2878756A1 (en) * 2004-12-07 2006-06-09 Salomon Sa Sliding board e.g. ski, manufacturing method, involves constructing upper reinforcement sub-assembly having upper layer and pierced reinforcement plate, by connecting plate with layer using pins maintaining space between plate and layer
FR2879939A1 (en) 2004-12-29 2006-06-30 Salomon Sa Sliding board e.g. alpine ski, fabricating method, involves disposing interposed layer between reinforcement and top layer, where former layer has low temperature fusion phase to bring stack to temperature closer to its melting temperature

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FR2916985B1 (en) * 2007-06-07 2009-11-06 Skis Dynastar Soc Par Actions SNOWBOARD BOARD AND METHOD OF MANUFACTURING SUCH BOARD.

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US4705471A (en) * 1985-08-02 1987-11-10 Mobil Oil Corporation Mold for producing a plate
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FR2677918A1 (en) * 1991-06-18 1992-12-24 Rossignol Sa Process for the manufacture of a composite (complex) moulded structure including a foam core made of plastic and ski obtained by the implementation of this process
GB2259883A (en) * 1991-09-28 1993-03-31 Rover Group Moulding against a shape or surface imparting film liner

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FR2672810B1 (en) * 1991-02-14 1993-04-23 Salomon Sa ALPINE SKI FOR SLIDING ON SNOW AND ICE.
DE4233631C2 (en) * 1992-10-06 1994-09-29 Head Sport Ag Method for producing skis and device for carrying out this method

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US4705471A (en) * 1985-08-02 1987-11-10 Mobil Oil Corporation Mold for producing a plate
EP0428886A1 (en) * 1989-11-22 1991-05-29 Salomon S.A. Method of fabrication of an injected ski and structure of a ski
FR2677918A1 (en) * 1991-06-18 1992-12-24 Rossignol Sa Process for the manufacture of a composite (complex) moulded structure including a foam core made of plastic and ski obtained by the implementation of this process
GB2259883A (en) * 1991-09-28 1993-03-31 Rover Group Moulding against a shape or surface imparting film liner

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2878756A1 (en) * 2004-12-07 2006-06-09 Salomon Sa Sliding board e.g. ski, manufacturing method, involves constructing upper reinforcement sub-assembly having upper layer and pierced reinforcement plate, by connecting plate with layer using pins maintaining space between plate and layer
EP1669111A1 (en) * 2004-12-07 2006-06-14 Salomon S.A. Process for a composite glide board with injected core and board obtained by this process
FR2879939A1 (en) 2004-12-29 2006-06-30 Salomon Sa Sliding board e.g. alpine ski, fabricating method, involves disposing interposed layer between reinforcement and top layer, where former layer has low temperature fusion phase to bring stack to temperature closer to its melting temperature

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EP0630667A3 (en) 1995-01-18

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