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EP0017792A1 - All synthetics ski - Google Patents

All synthetics ski Download PDF

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Publication number
EP0017792A1
EP0017792A1 EP80101497A EP80101497A EP0017792A1 EP 0017792 A1 EP0017792 A1 EP 0017792A1 EP 80101497 A EP80101497 A EP 80101497A EP 80101497 A EP80101497 A EP 80101497A EP 0017792 A1 EP0017792 A1 EP 0017792A1
Authority
EP
European Patent Office
Prior art keywords
ski
laminate
webs
gfk
fabric laminate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP80101497A
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German (de)
French (fr)
Inventor
Eberhard Plenk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gebrueder Plenk GmbH Langlaufskifabrik
Original Assignee
Gebrueder Plenk GmbH Langlaufskifabrik
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gebrueder Plenk GmbH Langlaufskifabrik filed Critical Gebrueder Plenk GmbH Langlaufskifabrik
Publication of EP0017792A1 publication Critical patent/EP0017792A1/en
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/12—Making thereof; Selection of particular materials

Definitions

  • the innovation concerns an all-plastic ski, especially cross-country skis, with a lower G F K laminate (laminate made of glass fiber reinforced plastic) bearing a tread surface on the underside, an upper GRP laminate forming the top surface and a filling arranged between the upper and lower GRP laminate made of foamed plastic.
  • a lower G F K laminate laminate made of glass fiber reinforced plastic bearing a tread surface on the underside
  • an upper GRP laminate forming the top surface
  • All-plastic cross-country skis of the type mentioned above are characterized by a relatively simple construction, but have the disadvantage that the tension of the ski required in the so-called impression zone of the ski (wax zone or no-wax zone of the ski) is difficult to achieve and can only be set relatively imprecisely.
  • a relatively large cross-section must be selected or the upper or lower GRP laminate reinforced, which undesirably increases the material expenditure and the weight of the ski.
  • the innovation is therefore based on the task of avoiding these disadvantages to design a full-plastic ski, especially cross-country skis, of the type mentioned in such a way that the medium tension of the ski (ie the tension of the ski in the impression zone) is reduced while reducing the amount of material and weight and simple manufacture wide limits and can be set very precisely.
  • This object is renewal according achieved in that at the two outer sides of the ski in the region of its A ballonszone each one arranged between the upper and the lower GRP laminate, the side profile of the ski in the area of the impression zone appropriately shaped web is provided from tissue laminate.
  • the production of the ski according to the invention can be carried out in a simple manner so that the two fabric laminate webs are fixed on the two side cheeks of the mold by means of adhesive before the mold is foamed.
  • At least the end of the two fabric laminate webs pointing towards the ski tip is tapered in height and thickness and has a slender, tapering design.
  • the two fabric laminate webs do not hinder the foaming of the interior, which is usually carried out from the ski tip.
  • the thickness of the fabric laminate webs can be between 0.4 and 1 mm.
  • the fabric laminate webs are made transparent, it is possible to print them on the inside, the print being protected against damage by the fabric laminate.
  • the fabric laminate webs provided according to the innovation provide a very desirable lateral protection of the ski against damage of all kinds, especially in the impression zone of the ski (containing the binding area).
  • the cross-country ski 1 contains a lower GRP laminate 3 carrying a tread surface 2 on its underside, an upper GRP laminate 4 forming the top surface, a filling 5 made of foamed plastic, in particular polyurethane, arranged between the upper and lower GRP laminate, and two Fabric laminate webs 6 and 7.
  • These fabric laminate webs 6 and 7 are arranged on the two outer sides of the ski in the region of its impression zone and are shaped corresponding to the side profile of the ski in the region of the impression zone (cf. FIG. 1).
  • the two ends of the fabric laminate webs 6 and 7 are tapered in height and thickness and have a slender, tapering design.
  • This ski is manufactured using a foaming process, with the entry being made at the tip of the ski.
  • the fabric laminate webs are fixed to the metallic side walls of the ski shape by means of adhesive before foaming.

Landscapes

  • Laminated Bodies (AREA)

Abstract

The ski (1), which is especially suitable as a cross-country ski, consists of a lower GFK laminate (3) bearing a running surface coating (2) on the underside, an upper GFK laminate (4) forming the covering surface, a filling (5) made of foamed plastic, arranged between the upper and the lower GFK laminates (4, 3), and two webs (6, 7) made of fabric laminate which are arranged at the two outsides of the ski (1) in the region of its mould zone between the upper and the lower GFK laminates (4, 3) and serve for the precise setting of the central tension of the ski (1). If the lateral webs (6, 7) are of transparent design, they can also be provided on the inside with a print, a decoration or a layer of colour which is protected against damage when the ski is used. <IMAGE>

Description

Die Neuerung betrifft einen Vollkunststoffski, insbesondere Langlaufski, mit einem an der Unterseite einen Laufflächenbelag tragenden unteren GFK-Laminat (Laminat aus glasfaserverstärktem Kunststoff), einem die Deckfläche bildenden oberen GFK-Laminat sowie einer zwischen dem oberen und unteren GFK-Laminat angeordneten Füllung aus geschäumtem Kunststoff.The innovation concerns an all-plastic ski, especially cross-country skis, with a lower G F K laminate (laminate made of glass fiber reinforced plastic) bearing a tread surface on the underside, an upper GRP laminate forming the top surface and a filling arranged between the upper and lower GRP laminate made of foamed plastic.

Vollkunststoff-Langlaufski der vorstehend genannten Art zeichnen sich durch eine verhältnismäßig einfache Bauweise aus, besitzen jedoch den Nachteil, daß sich die in der sog. Abdruckzone des Ski (Wachszone bzw. no-wax-Zone des Ski) erforderliche Spannung des Ski schwer erzielen und nur verhältnismäßig ungenau einstellen läßt. Bei den bisher bekannten Ausführungen muß zur Erreichung der notwendigen Mittelspannung des Ski ein verhältnismäßig großer Querschnitt gewählt oder das obere bzw. untere GFK-Laminat verstärkt werden, was den Materialaufwand und das Gewicht des Ski in unerwünschter Weise vergrößert. Der Neuerung liegt daher die Aufgabe zugrunde, unter Vermeidung dieser Nachteile einen Vollkunststoffski, insbesondere Langlaufski, der eingangs genannten Art so auszubilden, daß bei Verringerung von Materialaufwand und Gewicht und einfacher Fertigung die Mittelspannung des Ski (d.h. die Spannung des Ski in der Abdruckzone) in weiten Grenzen und sehr genau eingestellt werden kann.All-plastic cross-country skis of the type mentioned above are characterized by a relatively simple construction, but have the disadvantage that the tension of the ski required in the so-called impression zone of the ski (wax zone or no-wax zone of the ski) is difficult to achieve and can only be set relatively imprecisely. In the previously known designs, in order to achieve the necessary medium tension of the ski, a relatively large cross-section must be selected or the upper or lower GRP laminate reinforced, which undesirably increases the material expenditure and the weight of the ski. The innovation is therefore based on the task of avoiding these disadvantages to design a full-plastic ski, especially cross-country skis, of the type mentioned in such a way that the medium tension of the ski (ie the tension of the ski in the impression zone) is reduced while reducing the amount of material and weight and simple manufacture wide limits and can be set very precisely.

Diese Aufgabe wird neuerungsgemäß dadurch gelöst, daß an den beiden Außenseiten des Ski im Bereich seiner Abdruckzone je ein zwischen dem oberen und dem unteren GFK-Laminat angeordneter, dem Seitenprofil des Ski im Bereich der Abdruckzone entsprechend geformter Steg aus Gewebelaminat vorgesehen ist.This object is renewal according achieved in that at the two outer sides of the ski in the region of its A bdruckzone each one arranged between the upper and the lower GRP laminate, the side profile of the ski in the area of the impression zone appropriately shaped web is provided from tissue laminate.

Durch diese beiden Gewebelaminatstege läßt sich die Spannung des Ski in der Abdruckzone sehr genau und trotz Verringerung des Gesamt-Querschnittes auch recht hoch einstellen. Auf diese Weise läßt sich die gewünschte Mittelspannung des Langlaufski mit einer relativ niedrigen Bauhöhe des Ski erreichen.These two fabric laminate webs allow the tension of the ski in the impression zone to be set very precisely and, despite the reduction in the overall cross section, also quite high. In this way, the desired medium tension of the cross-country ski can be achieved with a relatively low overall height of the ski.

Die Fertigung des neuerungsgemäßen Ski läßt sich in einfacher Weise so durchführen, daß die beiden Gewebelaminatstege vor dem Ausschäumen der Form an den beiden Seitenwangen der Form mittels Kleber festgelegt werden.The production of the ski according to the invention can be carried out in a simple manner so that the two fabric laminate webs are fixed on the two side cheeks of the mold by means of adhesive before the mold is foamed.

Gemäß einer zweckmäßigen Ausgestaltung der Neuerung ist zumindest das zur Skispitze weisende Ende der beiden Gewebelaminatstege in der Höhe und Stärke verjüngt und schlank auslaufend ausgebildet. Auf diese Weise behindern die beiden Gewebelaminatstege nicht das Ausschäumen des Innenraumes, das üblicherweise von der Skispitze aus vorgenommen wird.According to an expedient embodiment of the innovation, at least the end of the two fabric laminate webs pointing towards the ski tip is tapered in height and thickness and has a slender, tapering design. In this way, the two fabric laminate webs do not hinder the foaming of the interior, which is usually carried out from the ski tip.

Die Stärke der Gewebelaminatstege kann - je nach der gewünschten Mittelspannung des Ski - zwischen 0,4 und 1 mm liegen.Depending on the desired medium tension of the ski, the thickness of the fabric laminate webs can be between 0.4 and 1 mm.

Werden die Gewebelaminatstege transparent ausgebildet, so besteht die Möglichkeit, sie auf der Innenseite zu bedrucken, wobei der Druck durch das Gewebelaminat gegenüber Beschädigung geschützt ist.If the fabric laminate webs are made transparent, it is possible to print them on the inside, the print being protected against damage by the fabric laminate.

Auch im übrigen stellen die neuerungsgemäß vorgesehenen Gewebelaminatstege einen gerade in der Abdruckzone des Ski (enthaltend den Bindungsbereich) sehr erwünschten seitlichen Schutz des Ski gegenüber Beschädigungen aller Art dar.In addition, the fabric laminate webs provided according to the innovation provide a very desirable lateral protection of the ski against damage of all kinds, especially in the impression zone of the ski (containing the binding area).

Ein Ausführungsbeispiel der Neuerung ist in der Zeichnung veranschaulicht.An embodiment of the innovation is illustrated in the drawing.

Es zeigen

  • Fig.1 eine Seitenansicht eines neuerungsgemäßen Langlaufski,
  • Fig.2 einen Querschnitt im Bereich der Abdruckzone (längs der Linie II-II in Fig.1, in vergrößertem Maßstab).
Show it
  • 1 shows a side view of a cross-country ski according to the invention,
  • 2 shows a cross section in the region of the impression zone (along the line II-II in FIG. 1, on an enlarged scale).

Der neuerungsgemäße Langlaufski 1 enthält ein an seiner Unterseite einen Laufflächenbelag 2 tragendes unteres GFK-Laminat 3, ein die Deckfläche bildendes oberes GFK-Laminat 4, eine zwischen dem oberen und unterem GFK-Laminat angeordnete Füllung 5 aus geschäumtem Kunststoff, insbesondere aus Polyurethan sowie zwei Gewebelaminatstege 6 und 7. Diese Gewebelaminatstege 6 und 7 sind an den beiden Außenseiten des Ski im Bereich seiner Abdruckzone angeordnet und dem Seitenprofil des Ski im Bereich der Abdruckzone entsprechend geformt (vgl. Fig.1).The cross-country ski 1 according to the invention contains a lower GRP laminate 3 carrying a tread surface 2 on its underside, an upper GRP laminate 4 forming the top surface, a filling 5 made of foamed plastic, in particular polyurethane, arranged between the upper and lower GRP laminate, and two Fabric laminate webs 6 and 7. These fabric laminate webs 6 and 7 are arranged on the two outer sides of the ski in the region of its impression zone and are shaped corresponding to the side profile of the ski in the region of the impression zone (cf. FIG. 1).

Die beiden Enden der Gewebelaminatstege 6 und 7 sind in der Höhe und Stärke verjüngt und schlank auslaufend ausgebildet.The two ends of the fabric laminate webs 6 and 7 are tapered in height and thickness and have a slender, tapering design.

Zur weiteren Erläuterung der Neuerung diene folgendes Ausführungsbeispiel eines mit Gewebelaminatstegen versehenen Polyurethan-Vollkunststoffski:

  • Skilänge: 195 cm
  • Skibreite: 55 mm
  • oberes GFK-Laminat: 0,7 mm stark, 55 mm breit, längs- und querverstärkt;
  • unteres GFK-Laminat: 0,5 mm stark, 55 mm breit, verbunden durch Epoxydharzkleber mit einem 1,4 mm starken nowax-Polyäthylenbelag;
  • seitliche Stege aus Gewebelaminat: Länge 800 mm, Höhe 23,8 mm, Stärke 0,5 mm;

die Stege beginnen 460 mm vom hinteren Skiende.The following exemplary embodiment of a polyurethane all-plastic ski provided with fabric laminate webs serves to further explain the innovation:
  • Ski length: 195 cm
  • Ski width: 55 mm
  • upper GFK laminate: 0.7 mm thick, 55 mm wide, lengthways and crosswise reinforced;
  • lower GFK laminate: 0.5 mm thick, 55 mm wide, connected by epoxy resin adhesive with a 1.4 mm thick nowax polyethylene covering;
  • lateral webs made of fabric laminate: length 800 mm, height 23.8 mm, thickness 0.5 mm;

the ridges start 460 mm from the rear end of the ski.

Die Herstellung dieses Ski erfolgt in einem Schäumungsverfahren, wobei der Einschuß an der Skispitze vorgenommen wird. Die Gewebelaminatstege werden vor dem Schäumen mittels Kleber an den metallischen Seitenwangen der Skiform festgelegt.This ski is manufactured using a foaming process, with the entry being made at the tip of the ski. The fabric laminate webs are fixed to the metallic side walls of the ski shape by means of adhesive before foaming.

Claims (5)

1. Vollkunststoffski, insbesondere Langlaufski, mit einem an der Unterseite.einen Laufflächenbelag tragenden unteren GFK-Laminat, einem die Deckfläche bildenden oberen GFK-Laminat sowie einer zwischen dem oberen und unteren GFK-Laminat angeordneten Füllung aus geschäumtem Kunststoff, dadurch gekennzeichnet,
daß an den beiden Außenseiten des Ski (1) im Bereich seiner Abdruckzone je ein zwischen dem oberen und dem unteren GFK-Laminat (4 bzw. 3) angeordneter, dem Seitenprofil des Ski im Bereich der Abdruckzone entsprechend geformter Steg (6, 7) aus Gewebelaminat vorgesehen ist.1. All-plastic ski, especially cross-country skis, with a lower GRP laminate bearing a tread surface on the underside, an upper GRP laminate forming the top surface and a filling made of foamed plastic arranged between the upper and lower GRP laminate, characterized in that
that on the two outer sides of the ski (1) in the region of its impression zone each have a web (6, 7) arranged between the upper and the lower GRP laminate (4 or 3) and corresponding to the side profile of the ski in the region of the impression zone Fabric laminate is provided. 2. Ski nach Anspruch 1, dadurch gekennzeichnet, daß zumindest das zur Skispitze weisende Ende der beiden Gewebelaminatstege (6, 7) in der Höhe und Stärke verjüngt und schlank auslaufend ausgebildet ist.2. Ski according to claim 1, characterized in that at least the end of the two fabric laminate webs (6, 7) pointing towards the tip of the ski is tapered in height and thickness and is designed to be slim and tapering. 3. Ski nach Anspruch 1, dadurch gekennzeichnet, daß die Stärke der Gewebelaminatstege (6, 7) zwischen 0,4 und 1 mm beträgt.3. Ski according to claim 1, characterized in that the thickness of the fabric laminate webs (6, 7) is between 0.4 and 1 mm. 4. Ski nach Anspruch 1, dadurch gekennzeichnet, daß die beiden Gewebelaminatstege (6, 7) transparent ausgebildet und auf der Innenseite bedruckt sind.4. Ski according to claim 1, characterized in that the two fabric laminate webs (6, 7) are transparent and are printed on the inside. 5. Ski nach Anspruch 1, dadurch gekennzeichnet, daß die Füllung (5) aus geschäumtem Polyurethan besteht.5. Ski according to claim 1, characterized in that the filling (5) consists of foamed polyurethane.
EP80101497A 1979-03-23 1980-03-21 All synthetics ski Withdrawn EP0017792A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE7908276 1979-03-23
DE7908276U 1979-03-23

Publications (1)

Publication Number Publication Date
EP0017792A1 true EP0017792A1 (en) 1980-10-29

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Application Number Title Priority Date Filing Date
EP80101497A Withdrawn EP0017792A1 (en) 1979-03-23 1980-03-21 All synthetics ski

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EP (1) EP0017792A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2654645A1 (en) * 1989-11-22 1991-05-24 Salomon Sa METHOD FOR PRODUCING A SKI BY INJECTION, AND SKI STRUCTURE OBTAINED BY THIS PROCESS.
FR2654644A1 (en) * 1989-11-22 1991-05-24 Salomon Sa PROCESS FOR MANUFACTURING AN INJECTED SKI, AND SKI STRUCTURE OBTAINED BY THIS PROCESS.
FR2679780A1 (en) * 1991-07-31 1993-02-05 Rossignol Sa Method for manufacturing a ski

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7143980U (en) * Heimgaertner H Foam composite ski
DE7146413U (en) * 1900-01-01 Hudora-Werk H Dornseif Multi-layer plastic or metal skis
DE6607252U (en) * 1968-08-08 1971-02-11 Fritzmeier Kg Georg SKI WITH A CORE MADE OF PLASTIC
DE2651991A1 (en) * 1976-11-15 1978-05-18 Fritzmeier Ag Sliding surface for skis - has small glass beads embedded in plastic and bonded to ski between steel strips at edges
DE2820382A1 (en) * 1977-05-20 1978-11-30 Adidas Sportschuhe SKI, IN PARTICULAR CROSS-COUNTRY SKI
DE7908276U1 (en) * 1979-06-28 Eberhard Plenk Gmbh & Co Skifabrik- Sportgrosshandel-Import-Export, 8222 Ruhpolding All-plastic skis

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7143980U (en) * Heimgaertner H Foam composite ski
DE7146413U (en) * 1900-01-01 Hudora-Werk H Dornseif Multi-layer plastic or metal skis
DE7908276U1 (en) * 1979-06-28 Eberhard Plenk Gmbh & Co Skifabrik- Sportgrosshandel-Import-Export, 8222 Ruhpolding All-plastic skis
DE6607252U (en) * 1968-08-08 1971-02-11 Fritzmeier Kg Georg SKI WITH A CORE MADE OF PLASTIC
DE2651991A1 (en) * 1976-11-15 1978-05-18 Fritzmeier Ag Sliding surface for skis - has small glass beads embedded in plastic and bonded to ski between steel strips at edges
DE2820382A1 (en) * 1977-05-20 1978-11-30 Adidas Sportschuhe SKI, IN PARTICULAR CROSS-COUNTRY SKI

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2654645A1 (en) * 1989-11-22 1991-05-24 Salomon Sa METHOD FOR PRODUCING A SKI BY INJECTION, AND SKI STRUCTURE OBTAINED BY THIS PROCESS.
FR2654644A1 (en) * 1989-11-22 1991-05-24 Salomon Sa PROCESS FOR MANUFACTURING AN INJECTED SKI, AND SKI STRUCTURE OBTAINED BY THIS PROCESS.
EP0428885A1 (en) * 1989-11-22 1991-05-29 Salomon S.A. Process for making a ski by injection, and ski structure
EP0428886A1 (en) * 1989-11-22 1991-05-29 Salomon S.A. Method of fabrication of an injected ski and structure of a ski
US5173226A (en) * 1989-11-22 1992-12-22 Salomon S.A. Process of manufacturing an injected ski
US5273696A (en) * 1989-11-22 1993-12-28 Salomon S.A. Process of forming a ski by injection
US5294139A (en) * 1989-11-22 1994-03-15 Salomon S.A. Ski
US5445403A (en) * 1989-11-22 1995-08-29 Salomon S.A. Ski structure formed by injection process
FR2679780A1 (en) * 1991-07-31 1993-02-05 Rossignol Sa Method for manufacturing a ski

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