EP0231734A1 - Structural element, particularly for ski-cores and method for producing the same - Google Patents

Structural element, particularly for ski-cores and method for producing the same Download PDF

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Publication number
EP0231734A1
EP0231734A1 EP86890309A EP86890309A EP0231734A1 EP 0231734 A1 EP0231734 A1 EP 0231734A1 EP 86890309 A EP86890309 A EP 86890309A EP 86890309 A EP86890309 A EP 86890309A EP 0231734 A1 EP0231734 A1 EP 0231734A1
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Prior art keywords
ski
foils
core
corrugated
films
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EP86890309A
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German (de)
French (fr)
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EP0231734B1 (en
Inventor
Anton Schutti
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Atomic Austria GmbH
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Atomic Skifabrik Alois Rohrmoser
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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 a component, in particular for use as a ski core, preferably in a cross-country ski, which core is formed by joined and interconnected, corrugated or angled profiled films made of paper or plastic material.
  • the invention further relates to a component produced by this method, in particular for use as a ski core.
  • cores for skis in particular for cross-country skis, by superimposed layers, e.g. are made of wood.
  • cores are extremely heavy. If the ski is to have a low weight, it is also known to form its core as a reinforced foam from a plastic material.
  • Such cores made by foaming have only a low strength.
  • the invention is therefore based on the object of creating a core for a ski, in particular a cross-country ski, which has a very high strength despite a very low weight.
  • ski cores from corrugated or angled profiled foils from paper or plastic material, which cores have a kind of honeycomb structure.
  • cores have a kind of honeycomb structure.
  • the individual foils must be held in position in such a way that the apexes lie on top of one another or that the individual foils are prevented from lying one inside the other, whereby the desired structure with channels located between the foils could not be formed.
  • an approximately flat film is arranged between two angled profiled films, which comes to rest on the tops of one of the films and which in turn forms the basis for the support of the adjacent film forms.
  • the invention is therefore based on the object of specifying a method by which such a component can be manufactured in a simple manner, without the need to provide flat foils between the individual profiled foils, so that the disadvantages caused by these are avoided and regardless of this the desired Position bracket for connecting the films along their apex is guaranteed.
  • This is achieved according to the invention in that on the corrugated or angled profiled foils made of paper or plastic, spaced apart from each other, approximately parallel tension elements, such as threads Cotton, silk, glass, plastic, carbon or the like are attached, for example glued, and then the foils are placed on top of one another in the desired position and connected to one another.
  • the tension elements which extend transversely to the generatrix of the profiled foils, can be located at intervals of 10 cm to 30 cm, preferably at intervals of 20 cm.
  • the foils can be bonded in a manner known per se, e.g. be reinforced by impregnation, whereupon the packages formed by the layers which are stacked and connected to one another are divided into sections perpendicular to the generators of the films or parallel to the tension elements, the height of which approximates the height of the desired core for producing a ski, in particular one Cross-country skis.
  • the packets formed by the interconnected foils can be divided along such planes into sections which, with the normal planes, form an angle of 10 ° to 50 °, in particular an angle of 20 ° to 40 °, on the generatrix of the structure. Since the core can be divided into sections over the length of a ski, a core section that optimally corresponds to the loads can hereby be arranged in each area of the ski.
  • corrugated or angled profiled foils made of paper or plastic material are joined to one another with the interposition of threads and connected to one another, in particular glued, which results in a corrugated or honeycomb-like structure in cross section.
  • these packets of films stacked and connected to one another are divided into sections, the width of which is approximately equal to the height of a ski core.
  • the walls of these sections are approximately perpendicular to the tread or surface of the ski.
  • the core is thus formed by a structured body which is formed with channels running from top to bottom.
  • a component for the production of a core for a ski, in particular a cross-country ski is characterized according to the invention in that it consists of foils made of paper or a plastic material that are joined together and directly connected, corrugated or angled profiled foils.
  • the paper from which the component is made is preferably reinforced by impregnation using a plastic material. If the component is formed by corrugated foils, foils lying one against the other are displaced relative to one another in such a way that their apices lie against one another, wherein they are connected to one another along the apex.
  • At least some of the foils can be double-layered, with two foils lying one against the other in are placed one against the other, whereas the foils lying against the double layer are connected to them along their apex lines.
  • a component 1 according to the invention which can be used for the production of a ski core, consists of corrugated foils 2, foils lying next to one another being displaced relative to one another in such a way that their apex lines 3a, 3b come to lie on one another .
  • the foils 2 are connected to one another, for example glued, along these apex lines 3, thereby forming a structure in which continuous channels 4 are formed between the individual foils 2.
  • these channels 4 extend from the top of the ski to the bottom thereof.
  • the loads to be absorbed by the core are absorbed by the walls of the foils 2 which run from top to bottom. Due to the structure of this component 1, it has the strength required for use as a ski core.
  • the Foils can be made from paper or paper impregnated with a plastic. be made of rigid plastic material.
  • the exemplary embodiment according to FIG. 2 differs from the exemplary embodiment according to FIG. 1 only in that part of the foils 2 has a double layer to increase the strength of the component 1, two foils 2n, 2'n being placed one inside the other and connected to one another.
  • the adjacent foils 2m, 2o are opposite the first pair of foils. 2n, 2'n arranged displaced, whereby they can be connected to it along their apex lines 3m, 3o along the apex lines 3n, 3'n.
  • the remaining features and the manufacturing method correspond to those which were explained using the exemplary embodiment according to FIG. 1.
  • corrugated foils made of paper or plastic are placed on one side at intervals of 20 cm to 50 cm.
  • Tension elements such as threads made of cotton, silk, glass, carbon, plastic or the like, attached.
  • the tension elements run transversely to the generatrix of the corrugated foils.
  • the foils are then impregnated with a plastic, which significantly increases their strength. During the impregnation process, the tension elements serve to maintain the shape.
  • a large number of foils are then placed on top of one another in such a way that they touch along their apex lines and they are connected to one another along the apex, for example glued or welded.
  • the plates formed in this way are subdivided along cuts which are approximately normal to the generators, whereby sections are obtained which are suitable as cores in the production of skis.
  • the cuts are made along such planes which form an angle of 10 ° to 50 °, in particular an angle of 20 ° to 40 °, with the generators, whereby specific strength properties can be imparted to the ski core.
  • the foils used for the manufacturing process can have a width of 1 m, for example.
  • the impregnation is carried out in such a way that the foils are drawn through a resin bath, whereupon they are wound onto a spindle and inclined, which allows excess resin to drain off. Sections of the foils are then stacked on top of one another, whereby plates are formed. These plates are placed in a wind tunnel heated to a temperature of 130 ° C to 150 ° C, in which hot air is also passed through the channels in the plates. This causes the resin to harden and the foils to be firmly bonded to one another, thereby forming rigid plates. These plates are then divided into sections which are suitable as a core for skis, in particular cross-country skis.

Abstract

1. A process for the manufacture of a component, especially for use as a ski core, preferably in a cross-country ski, which core is formed of corrugated or serpentine shaped sheets of paper or plastics material fitted and connected together, characterized in that tension members (6), such as threads of cotton, silk, glass, plastics, carbon or the like, located at a distance from each other and running approximately parallel to each other, are attached e.g. glued, to the corrugated or serpentine shaped sheets (2) of paper or plastics and in that the sheets (2) are subsequently laid on top of each other and connected together, especially glued.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung eines Bauelementes insbesondere zur Verwendung als Skikern, vorzugsweise in einem Langlaufski, welcher Kern durch aneinandergefügte und miteinander verbundene, gewellte oder abgewinkelt profilierte Folien aus Papier- oder Kunststoffmaterial gebildet ist. Die Erfindung betrifft weiters ein nach diesem Verfahren hergestelltes Bauelement, insbesondere zur Verwendung als Skikern.The invention relates to a method for producing a component, in particular for use as a ski core, preferably in a cross-country ski, which core is formed by joined and interconnected, corrugated or angled profiled films made of paper or plastic material. The invention further relates to a component produced by this method, in particular for use as a ski core.

Es ist bekannt, Kerne für Skier, insbesondere für Langlaufskier, durch aufeinander gelegte Schichten, die z.B. aus Holz gefertigt sind, zu bilden. Derartigen Kernen kommt jedoch ein großes Gewicht zu. Soferne der Ski ein geringes Gewicht aufweisen soll, ist es weiters bekannt, dessen Kern als armierte Ausschäumung aus einem Kunststoffmaterial auszubilden. Derartige durch Ausschäumung gefertigte Kerne weisen jedoch eine nur geringe Festigkeit auf. Der Erfindung liegt demnach die Aufgabe zugrunde, einen Kern für einen Ski, insbesondere einen Langlaufski, zu schaffen, der trotz eines sehr geringen Gewichtes eine sehr hohe Festigkeit aufweist.It is known to use cores for skis, in particular for cross-country skis, by superimposed layers, e.g. are made of wood. However, such cores are extremely heavy. If the ski is to have a low weight, it is also known to form its core as a reinforced foam from a plastic material. Such cores made by foaming, however, have only a low strength. The invention is therefore based on the object of creating a core for a ski, in particular a cross-country ski, which has a very high strength despite a very low weight.

Es ist weiters bekannt, Skikerne durch gewellte oder abgewinkelt profilierte Folien aus Papier- oder Kunststoffmaterial zu fertigen, welche Kerne eine Art Wabenstruktur aufweisen. Bei der Herstellung derartiger Kerne besteht jedoch das Problem, daß eine Lagehalterung der einzelnen Folien dahingehend bewirkt werden muß, daß diese mit den Scheiteln aufeinander zu liegen kommen bzw. daß verhindert wird, daß die einzelnen Folien ineinander liegen, wodurch nicht die angestrebte Struktur mit zwischen den Folien befindlichen Kanälen gebildet werden könnte. Um dieses Problem zu lösen, ist z.B. bei einem Kern gemäß der AT-PS 231 323 jeweils zwischen zwei abgewinkelt profilierten Folien eine angenähert eben ausgebildete Folie angeordnet, welche auf den Scheiteln einer der Folien zu liegen kommt und die ihrerseits die Basis für die Auflage der anliegenden weiteren Folie bildet. Ein derartiger Kern ist allerdings insoferne nicht den Erfordernissen entsprechend, als durch die dazwischen befindlichen, durchgehenden,ebenen Folien dessen Gewicht nahezu verdoppelt wird, wogegen nur eine geringfügige Erhöhung in dessen Festigkeit erzielt wird. Zudem unterliegen die angenähert eben durchlaufenden Folien hohen Belastungen, weswegen sie bru-chanfällig sind, wodurch Beschädigungen eines aus diesem Bauelement gefertigten Kernes bedingt werden können.It is also known to manufacture ski cores from corrugated or angled profiled foils from paper or plastic material, which cores have a kind of honeycomb structure. In the production of such cores, however, there is the problem that the individual foils must be held in position in such a way that the apexes lie on top of one another or that the individual foils are prevented from lying one inside the other, whereby the desired structure with channels located between the foils could not be formed. In order to solve this problem, for example in the case of a core according to AT-PS 231 323, an approximately flat film is arranged between two angled profiled films, which comes to rest on the tops of one of the films and which in turn forms the basis for the support of the adjacent film forms. However, such a core does not meet the requirements insofar as the weight of the continuous, flat foils in between is almost doubled, whereas only a slight increase in its strength is achieved. In addition, the approximately evenly continuous foils are subject to high loads, which is why they are prone to breakage, which can cause damage to a core made from this component.

Der Erfindung liegt demnach die Aufgabe zugrunde, ein Verfahren anzugeben, durch welches in einfacher Weise ein derartiges Bauelement gefertigt werden kann, ohne daß zwischen den einzelnen profilierten Folien ebene Folien vorgesehen werden müssen, sodaß die durch diese bedingten Nachteile vermieden werden und dessen ungeachtet die angestrebte Lagehalterung zur Verbindung der Folien längs ihrer Scheitel gewährleistet wird. Dies wird erfindungsgemäß dadurch erzielt, daß an den gewellten oder abgewinkelt profilierten Folien aus Papier oder Kunststoff in Abständen voneinander befindliche, zueinander angenähert parallel verlaufende Zugelemente, wie Fäden aus Baumw-olle, Seide, Glas, Kunststoff, Kohlenstoff od.dgl., befestigt, z.B. verklebt, werden und anschließend die Folien in der gewünschten Lage aufeinandergelegt und miteinander verbunden werden.The invention is therefore based on the object of specifying a method by which such a component can be manufactured in a simple manner, without the need to provide flat foils between the individual profiled foils, so that the disadvantages caused by these are avoided and regardless of this the desired Position bracket for connecting the films along their apex is guaranteed. This is achieved according to the invention in that on the corrugated or angled profiled foils made of paper or plastic, spaced apart from each other, approximately parallel tension elements, such as threads Cotton, silk, glass, plastic, carbon or the like are attached, for example glued, and then the foils are placed on top of one another in the desired position and connected to one another.

Die Zugelemente, die sich quer zu den Erzeugenden der profilierten Folien erstrecken, können sich in Abständen von 10 cm bis 30 cm, vorzugsweise in Abständen von 20 cm, voneinander befinden. Nach Verbindung, insbesondere Verklebung, der Folien miteinander können die Folien in an sich bekannter Weise,z.B. durch Imprägnierung,verstärkt werden, worauf die durch die aufeinander geschichteten und miteinander verbundenen Folien gebildeten Pakete senkrecht zu den Erzeugenden der Folien bzw. parallel zu den Zugelementen in Abschnitte unterteilt werden, deren Höhe angenähert der Höhe des gewünschten Kernes zur Herstellung eines Skis, insbesondere eines Langlaufskis, entspricht.The tension elements, which extend transversely to the generatrix of the profiled foils, can be located at intervals of 10 cm to 30 cm, preferably at intervals of 20 cm. After the foils have been joined, in particular glued together, the foils can be bonded in a manner known per se, e.g. be reinforced by impregnation, whereupon the packages formed by the layers which are stacked and connected to one another are divided into sections perpendicular to the generators of the films or parallel to the tension elements, the height of which approximates the height of the desired core for producing a ski, in particular one Cross-country skis.

Nach einer Ausführungsvariante können die durch die miteinander verbundenen Folien gebildeten Pakete längs solcher Ebenen in Abschnitte unterteilt werden, die mit den Normalebenen auf die Erzeugenden der Struktur einen Winkel von 10° bis 50°, insbesondere einen Winkel von 20° bis 40°, einschließen. Da über die Länge eines Skis der Kern in Abschnitte unterteilt sein kann, kann hierdurch in jedem Bereich des Skis ein den Belastungen optimal entsprechender Kernabschnitt angeordnet werden.According to an embodiment variant, the packets formed by the interconnected foils can be divided along such planes into sections which, with the normal planes, form an angle of 10 ° to 50 °, in particular an angle of 20 ° to 40 °, on the generatrix of the structure. Since the core can be divided into sections over the length of a ski, a core section that optimally corresponds to the loads can hereby be arranged in each area of the ski.

Zur Fertigung eines solchen Bauelementes werden gewellte oder abgewinkelt profilierte Folien aus Papier-oder Kunststoffmaterial unter Zwischenlage von Fäden aneinandergefügt und miteinander verbunden, insbesondere verklebt, wodurch sich eine im Querschnitt gewellte oder wabenförmige Struktur ergibt. Hierauf werden diese Pakete von übereinander geschichteten und miteinander verbundenen Folien in Abschnitte unterteilt, deren Breite der Höhe eines Skikernes angenähert gleich ist. Bei Verwendung als Skikern stehen demnach die Wände dieser Abschnitte angenähert senkrecht zur Lauffläche bzw. zur Oberfläche des Skis. Somit ist der Kern durch einen strukturierten Körper gebildet, der mit von oben nach unten durchgehenden Kanälen ausgebildet ist.For the production of such a component, corrugated or angled profiled foils made of paper or plastic material are joined to one another with the interposition of threads and connected to one another, in particular glued, which results in a corrugated or honeycomb-like structure in cross section. Thereupon, these packets of films stacked and connected to one another are divided into sections, the width of which is approximately equal to the height of a ski core. When used as a ski core, the walls of these sections are approximately perpendicular to the tread or surface of the ski. The core is thus formed by a structured body which is formed with channels running from top to bottom.

Ein Bauelement zur Herstellung eines Kernes für einen Ski, insbesondere einen Langlaufski, ist erfindungsgemäß dadurch gekennzeichnet, daß es aus aneinandergefügten und miteinander direkt verbundenen, gewellten oder abgewinkelt profilierten Folien aus Papier oder einem Kuststoffmaterial besteht. Vorzugsweise ist das Papier, aus dem das Bauelement gefertigt ist, durch Imprägnierung mittels eines Kunststoffmaterials verstärkt. Soferne das Bauelement durch gewellte Folien gebildet ist, sind jeweils aneinander liegende Folien so gegeneinander verschoben, daß sie mit ihren Scheiteln aneinander liegen, wobei sie längs der Scheitel miteinander verbunden sind. Zur Verstärkung des Bauelementes bzw. des aus diesem gefertigten Skikernes kann zumindest ein Teil der Folien doppeltschichtig ausgebildet sein, wobei zwei aneinander liegende Folien ineinander gelegt sind, wogegen die an die Doppelschichte anliegenden Folien mit diesen längs deren Scheitellinien verbunden sind.A component for the production of a core for a ski, in particular a cross-country ski, is characterized according to the invention in that it consists of foils made of paper or a plastic material that are joined together and directly connected, corrugated or angled profiled foils. The paper from which the component is made is preferably reinforced by impregnation using a plastic material. If the component is formed by corrugated foils, foils lying one against the other are displaced relative to one another in such a way that their apices lie against one another, wherein they are connected to one another along the apex. To reinforce the component or the ski core made from it, at least some of the foils can be double-layered, with two foils lying one against the other in are placed one against the other, whereas the foils lying against the double layer are connected to them along their apex lines.

Das erfindungsgemäße Verfahren bzw. ein erfindungsgemäßes Bauelement sind nachstehend anhand von zwei in der Zeichnung dargestellten Ausführungsbeispielen näher erläutert. Es zeigen:

  • Fig. 1 eine erste Ausführungsform eines erfindungsgemäßen Bauelementes in Draufsicht und
  • Fig. 2 eine zweite Ausführungsform eines erfindungsgemäßen Bauelementes in Draufsicht.
The method according to the invention and a component according to the invention are explained in more detail below with reference to two exemplary embodiments shown in the drawing. Show it:
  • Fig. 1 shows a first embodiment of a component according to the invention in plan view and
  • Fig. 2 shows a second embodiment of a component according to the invention in plan view.

Wie aus Fig. 1 ersichtlich ist, besteht ein erfindungsgemäßes Bauelement 1, das zur Herstellung eines Skikernes verwendet werden kann, aus gewellten Folien 2, wobei jeweils nebeneinander liegende Folien so gegeneinander verschoben sind, daß sie mit ihren Scheitellinien 3a, 3b aufeinander zu liegen kommen. Längs dieser Scheitellinien 3 sind die Folien 2 miteinander verbunden, z.B. verklebt, wodurch eine Struktur gebildet ist, bei welcher zwischen den einzelnen Folien 2 durchgehende Kanäle 4 gebildet sind. Diese Kanäle 4 erstrecken sich bei einem Skikern von der Oberseite des Skis zu dessen Unterseite hin. Die durch den Kern aufzunehmenden Belastungen werden von den von oben nach unten durchgehenden Wänden der Folien 2 aufgenommen. Aufgrund der Struktur dieses Bauelementes 1 weist dieses die für die Verwendung als Skikern erforderliche Festigkeit auf. Die Folien können aus mittels eines Kunststoffes imprägniertem Papier-bzw. aus steifem Kunststoffmaterial gefertigt sein.As can be seen from FIG. 1, a component 1 according to the invention, which can be used for the production of a ski core, consists of corrugated foils 2, foils lying next to one another being displaced relative to one another in such a way that their apex lines 3a, 3b come to lie on one another . The foils 2 are connected to one another, for example glued, along these apex lines 3, thereby forming a structure in which continuous channels 4 are formed between the individual foils 2. In the case of a ski core, these channels 4 extend from the top of the ski to the bottom thereof. The loads to be absorbed by the core are absorbed by the walls of the foils 2 which run from top to bottom. Due to the structure of this component 1, it has the strength required for use as a ski core. The Foils can be made from paper or paper impregnated with a plastic. be made of rigid plastic material.

Zur Fertigung des durch aufeinandergelegte und miteinander verbundene Folien gebildeten Bauelementes werden zwischen den einzelnen Folien 2 in Abständen voneinander befindliche Zugelemente 6, wie z.B. Fäden aus Seide, Baumwolle, Glas, Kunststoff, Kohlenstoffod.dgl. angeordnet, die sich quer zu den Erzeugenden der Folien 2 erstrecken, wodurch die einzelnen Folien 2 in einfacher Weise aufeinander gelegt werden und miteinander längs ihrer Scheitellinien,insbesondere zur Klebung, verbunden werden können. Soferne die Höhe eines Bauelementes 1 zur Fertigung eines Skis geringer ist als der Abstand der Zugelemente 6 voneinander, scheinen nur in einzelnen der endgefertigten Kerne derartige Zugelemente 6 auf.To manufacture the component formed by superimposed and interconnected foils, tensile elements 6, e.g. Threads made of silk, cotton, glass, plastic, carbon or the like arranged, which extend transversely to the generatrix of the films 2, whereby the individual films 2 are placed on top of one another in a simple manner and can be connected to one another along their apex lines, in particular for gluing. If the height of a component 1 for the manufacture of a ski is less than the distance of the pulling elements 6 from one another, such pulling elements 6 only appear in some of the finished cores.

Das Ausführungsbeispiel gemäß Fig. 2 unterscheidet sich vom Ausführungsbeispiel gemäß Fig. 1 nur dadurch, daß ein Teil der Folien 2 zur Erhöhung der Festigkeit des Bauelementes 1 doppelschichtig ausgebildet ist, wobei jeweils zwei Folien 2n, 2'n ineinander gelegt und miteinander verbunden sind. Die anliegenden Folien 2m, 2o sind gegenüber dem ersten Folienpaar . 2n, 2'n verschoben angeordnet, wodurch sie mit diesem längs ihrer Scheitellinien 3m, 3o längs der Scheitellinien 3n, 3'n verbunden werden können. Die übrigen Merkmale und das Herstellungsverfahren entsprechen denjenigen, die anhand des Ausführungsbeispiels gemäß Fig. 1 erläutert wurden. Zur Herstellung derartiger Bauelemente zur Fertigung von Kernen für Skier werden auf einer Seite von gewellten Folien aus Papier oder Kunststoff in Abständen von 20 cm bis 50 cm. Zugelemente, z.B. Fäden aus Baumwolle, Seide, Glas, Kohlenstoff, Kunststoff od.dgl., befestigt. Die Zugelemente verlaufen dabei quer zu den Erzeugenden der gewellten Folien. Hierauf werden die Folien mittels eines Kunststoffes imprägniert, wodurch ihre Festigkeit maßgeblich erhöht wird. Beim Imprägniervorgang dienen die Zugelemente der Formhaltung. Anschließend wird eine Vielzahl von Folien so aufeinander gelegt, daß sie sich längs ihrer Scheitellinien berühren und werden sie miteinander längs der Scheitel verbunden, z.B. verklebt oder verschweißt. Schließlich werden die hierdurch gebildeten Platten längs angenähert normal zu den Erzeugenden geführter Schnitte unterteilt, wodurch Abschnitte erhalten werden, die als Kerne bei der Fertigung von Skiern geeignet sind.The exemplary embodiment according to FIG. 2 differs from the exemplary embodiment according to FIG. 1 only in that part of the foils 2 has a double layer to increase the strength of the component 1, two foils 2n, 2'n being placed one inside the other and connected to one another. The adjacent foils 2m, 2o are opposite the first pair of foils. 2n, 2'n arranged displaced, whereby they can be connected to it along their apex lines 3m, 3o along the apex lines 3n, 3'n. The remaining features and the manufacturing method correspond to those which were explained using the exemplary embodiment according to FIG. 1. For the production of such components for the production of cores for skis, corrugated foils made of paper or plastic are placed on one side at intervals of 20 cm to 50 cm. Tension elements, such as threads made of cotton, silk, glass, carbon, plastic or the like, attached. The tension elements run transversely to the generatrix of the corrugated foils. The foils are then impregnated with a plastic, which significantly increases their strength. During the impregnation process, the tension elements serve to maintain the shape. A large number of foils are then placed on top of one another in such a way that they touch along their apex lines and they are connected to one another along the apex, for example glued or welded. Finally, the plates formed in this way are subdivided along cuts which are approximately normal to the generators, whereby sections are obtained which are suitable as cores in the production of skis.

Nach einer Ausführungsvariante werden die Schnitte längs solcher Ebenen geführt, die mit den Erzeugenden einen Winkel von 10° bis 50°, insbesondere einen Winkel von 20° bis 40°, einschließen, wodurch dem Skikern spezifische Festigkeitseigenschaften erteilt werden können.According to one embodiment variant, the cuts are made along such planes which form an angle of 10 ° to 50 °, in particular an angle of 20 ° to 40 °, with the generators, whereby specific strength properties can be imparted to the ski core.

Die für den Herstellungsvorgang verwendeten Folien können z.B. eine Breite von 1 m aufweisen. Die Imprägnierung erfolgt derart, daß die Folien durch ein Harzbad hindurchgezogen werden, worauf sie auf eine Spindel aufgespult und schräggestellt werden, wodurch überschüssiges Harz abfließen kann. Hierauf werden Abschnitte der Folien aufeinander geschichtet, wodurch Platten gebildet werden. Diese Platten werden in einen auf eine Temperatur von 130° C bis 150° C beheizten Windkanal eingebracht, in welchem Heißluft auch durch die in den Platten befindlichen Kanäle hindurchgeleitet wird. Hierdurch wird eine Aushärtung des Harzes und eine feste Verbindung der Folien miteinander bewirkt, wodurch steife Platten gebildet werden. Diese Platten werden hierauf in solche Abschnitte unterteilt, die als Kern für Skier, insbesondere Langlaufskier, geeignet sind.The foils used for the manufacturing process can have a width of 1 m, for example. The impregnation is carried out in such a way that the foils are drawn through a resin bath, whereupon they are wound onto a spindle and inclined, which allows excess resin to drain off. Sections of the foils are then stacked on top of one another, whereby plates are formed. These plates are placed in a wind tunnel heated to a temperature of 130 ° C to 150 ° C, in which hot air is also passed through the channels in the plates. This causes the resin to harden and the foils to be firmly bonded to one another, thereby forming rigid plates. These plates are then divided into sections which are suitable as a core for skis, in particular cross-country skis.

Claims (7)

1. Verfahren zur Herstellung eines Bauelementes, insbesondere zur Verwendung als Skikern, vorzugsweise in einem Langlaufski, welcher Kern durch aneinandergefügte und miteinander verbundene gewellte oder abgewinkelt profilierte Folien aus Papier- oder Kunststoffmaterial gebildet ist, dadurch gekennzeichnet, daß an den gewellten oder abgewinkelt profilierten Folien (2) aus Papier oder Kunststoff in Abstand voneinander befindliche, zueinander angenähert parallel verlaufende Zugelemente (6), wie Fäden aus Baumwolle, Seide, Glas, Kunststoff, Kohlenstoff od.dgl., befestigt, z.B. verklebt, werden und anschließend die Folien (2) aufeinander gelegt und miteinander verbunden, insbesondere verklebt werden.1. A method for producing a component, in particular for use as a ski core, preferably in a cross-country ski, which core is formed by joined and interconnected corrugated or angled profiled films made of paper or plastic material, characterized in that on the corrugated or angled profiled films (2) made of paper or plastic spaced apart, approximately mutually parallel tension elements (6), such as threads made of cotton, silk, glass, plastic, carbon or the like, attached, for example are glued, and then the foils (2) are placed on top of one another and connected to one another, in particular are glued. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Folien (2) nach Befestigung der Zugelemente (6) durch Imprägnierung versteift werden.2. The method according to claim 1, characterized in that the films (2) are stiffened by impregnation after attachment of the tension elements (6). 3. Verfahren nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß die durch die miteinander verbundenen Folien (2) gebildeten Platten längs solcher Ebenen in Abschnitte unterteilt werden, welche Ebenen mit den Normalebenen auf die Erzeugenden einen Winkel von 10° bis 50°, vorzugsweise einen Winkel von 20° bis 40°, einschließen.3. The method according to any one of claims 1 and 2, characterized in that the plates formed by the interconnected films (2) are divided along such planes into sections, which planes with the normal planes on the generators an angle of 10 ° to 50 ° , preferably include an angle of 20 ° to 40 °. 4. Bauelement zur Herstellung eines Skikernes für einen Ski, insbesondere zur Herstellung eines Kernes für einen Langlaufski, bestehend aus aneinandergefügten und miteinander verbundenen, gewellten oder abgewinkelt profilierten Folien aus Papier oder Kunststoffmaterial, dadurch gekennzeichnet, daß die gewellten bzw. abgewinkelt profilierten Folien (2) miteinander unmittelbar verbunden sind. 4th Component for the production of a ski core for a ski, in particular for the production of a core for a cross-country ski, consisting of interconnected and interconnected, corrugated or angled profiled films made of paper or plastic material, characterized in that the corrugated or angled profiled films (2) with each other are directly connected. 5. Bauelement nach Anspruch 4, dadurch gekennzeichnet, daß das Papier in an sich bekannter Weise durch Imprägnierung mittels eines Kunststoffmaterials verstärkt ist.5. The component according to claim 4, characterized in that the paper is reinforced in a manner known per se by impregnation by means of a plastic material. 6. Bauelement nach einem der Ansprüche 4 und 5, dadurch gekennzeichnet, daß zwei aneinander liegende gewellte Folien (2) so gegeneinander verschoben sind, daß sie jeweils mit ihren Scheitellinien aneinander liegen sowie längs dieser miteinander verbunden sind.6. Component according to one of claims 4 and 5, characterized in that two adjacent corrugated foils (2) are shifted against each other so that they lie against each other with their apex lines and are connected to one another along this. 7. Bauelement nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, daß zumindest ein Teil der Folien (2) doppelschichtig ausgebildet ist.7. Component according to one of claims 4 to 6, characterized in that at least a part of the films (2) is double-layered.
EP86890309A 1985-11-13 1986-11-12 Structural element, particularly for ski-cores and method for producing the same Expired - Lifetime EP0231734B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT3297/85 1985-11-13
AT0329785A AT385469B (en) 1985-11-13 1985-11-13 METHOD FOR PRODUCING A COMPONENT, IN PARTICULAR FOR USE AS A SKI CORE, preferably IN A CROSS-COUNTRY SKI, AND COMPONENT FOR PRODUCING A SKI CORE

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EP0231734A1 true EP0231734A1 (en) 1987-08-12
EP0231734B1 EP0231734B1 (en) 1990-08-29

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0284878A1 (en) * 1987-03-17 1988-10-05 VEB Kombinat Sportgeräte Schmalkalden Light construction core, particularly a supporting core for skis
WO2000003769A1 (en) * 1998-07-15 2000-01-27 Fischer Gesellschaft Mbh Hockey stick
US6105991A (en) * 1997-11-20 2000-08-22 The Burton Corporation Core for a gliding board
US6502850B1 (en) 1999-10-12 2003-01-07 The Burton Corporation Core for a gliding board
AT503213B1 (en) * 2006-01-27 2007-10-15 Fischer Gmbh SKIKERN WITH HOLLY CONSTRUCTION

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3707296A (en) * 1970-01-09 1972-12-26 Westinghouse Electric Corp Modified phenolic resin system and laminates made therefrom
FR2248860A1 (en) * 1973-10-29 1975-05-23 Amf Inc
FR2536335A1 (en) * 1982-11-22 1984-05-25 Fischer Gmbh LIGHTWEIGHT CONSTRUCTION CORE WITH CELLULAR STRUCTURE
WO1985003642A1 (en) * 1984-02-15 1985-08-29 Isosport Verbundbauteile Ges. M.B.H. Light construction core, as well as connection construction part, particularly a ski, comprising this light construction core

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3707296A (en) * 1970-01-09 1972-12-26 Westinghouse Electric Corp Modified phenolic resin system and laminates made therefrom
FR2248860A1 (en) * 1973-10-29 1975-05-23 Amf Inc
FR2536335A1 (en) * 1982-11-22 1984-05-25 Fischer Gmbh LIGHTWEIGHT CONSTRUCTION CORE WITH CELLULAR STRUCTURE
WO1985003642A1 (en) * 1984-02-15 1985-08-29 Isosport Verbundbauteile Ges. M.B.H. Light construction core, as well as connection construction part, particularly a ski, comprising this light construction core

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0284878A1 (en) * 1987-03-17 1988-10-05 VEB Kombinat Sportgeräte Schmalkalden Light construction core, particularly a supporting core for skis
US6105991A (en) * 1997-11-20 2000-08-22 The Burton Corporation Core for a gliding board
US6520530B1 (en) 1997-11-20 2003-02-18 The Burton Corporation Core for a gliding board
WO2000003769A1 (en) * 1998-07-15 2000-01-27 Fischer Gesellschaft Mbh Hockey stick
US6502850B1 (en) 1999-10-12 2003-01-07 The Burton Corporation Core for a gliding board
AT503213B1 (en) * 2006-01-27 2007-10-15 Fischer Gmbh SKIKERN WITH HOLLY CONSTRUCTION

Also Published As

Publication number Publication date
AT385469B (en) 1988-04-11
EP0231734B1 (en) 1990-08-29
ATE55915T1 (en) 1990-09-15
DE3673805D1 (en) 1990-10-04
ATA329785A (en) 1987-09-15

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