DE2647877A1 - Plastics ski filled with expanded foam - has glass balls on inside of wall panels to increase shear strength between foam and wall panels - Google Patents

Plastics ski filled with expanded foam - has glass balls on inside of wall panels to increase shear strength between foam and wall panels

Info

Publication number
DE2647877A1
DE2647877A1 DE19762647877 DE2647877A DE2647877A1 DE 2647877 A1 DE2647877 A1 DE 2647877A1 DE 19762647877 DE19762647877 DE 19762647877 DE 2647877 A DE2647877 A DE 2647877A DE 2647877 A1 DE2647877 A1 DE 2647877A1
Authority
DE
Germany
Prior art keywords
wall panels
foam
ski
filled
glass balls
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.)
Pending
Application number
DE19762647877
Other languages
German (de)
Inventor
Wido F Schmitz
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.)
Fritzmeier AG
Original Assignee
Fritzmeier AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fritzmeier AG filed Critical Fritzmeier AG
Priority to DE19762647877 priority Critical patent/DE2647877A1/en
Publication of DE2647877A1 publication Critical patent/DE2647877A1/en
Pending legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00Skis or snowboards
    • A63C5/12Making thereof; Selection of particular materials

Landscapes

  • Laminated Bodies (AREA)

Abstract

The ski that is made from plastics, has four high density plastic panels (1-4) which form the outer walls of the ski. The internal space which is enclosed by the wall panels, is filled with expanded plastic foam. In order to increase the shear strength of the boundary layer between the expanded plastic foam and the wall panels, tiny glass balls are bonded to the inside of all wall panels. A permanent elastic adhesive is used to attach the glass balls to the wall panels, thus the elasticity of the ski is maintained within an acceptable range of bending.

Description

Kunststoffski Plastic skis

Die Erfindung bezieht sich auf einen Kunststoffski mit einem aus Oberplatte, Unterplatte und Seitenteilen Webildeten Gehäuse, das mit Kunststoffschaum ausgefüllt ist, zwischen dem und der Innenfläche des Gehäuses ein Verstärkungsmaterial vorgesehen ist, das: mit der Gehäuseinnenfläche verklebt und vom Kunststoffschaum durchschäumt ist. The invention relates to a plastic ski with a Upper plate, lower plate and side panels are woven with the housing, which is covered with plastic foam is filled, between the and the inner surface of the housing a reinforcing material is provided that: glued to the inner surface of the housing and from the plastic foam foams through.

Es sind Kunststoffski dieser Art bekannt, bei denen das Gehäuse mit einem Faserflies oder Nadelfilz ausgekleidet ist, der mit einem geeigneten Kleber mit den Gehäuseinnenflächen verklebt ist, und der vom Schaumstoff durchschäumt wird, so daß die Fasern dieses Materials sich im Schaumstoff verankern. Es hat sich herausgestellt, daß dieser Schaumstoff im Bereich des Verstärkungsmaterials insbesondere in Bereichen höchster Schubbeanspruchung zum Zerbröseln neigt, womit die Schubkraftübertragung zwischen Oberplatte, Unterplatte bei Biegebeanspruchung beeinträchtigt wird. There are plastic skis of this type known in which the housing with a fiber fleece or needle felt is lined with a suitable adhesive is glued to the inner surfaces of the housing, and which is foamed through by the foam, so that the fibers of this material are in the foam anchor. It has been found that this foam in the area of the reinforcement material tends to crumble, especially in areas with the highest levels of shear stress, which means the transmission of shear force between the upper plate and the lower plate in the event of bending stress is affected.

Aufgabe der Erfindung ist es, einen Ski in der Eingangs beschriebenen Gattung zu schaffen, bei der eine erhöhte Schubfestigkeit der Grenzschicht zwischen Verstärkungsmaterial und Schaumstoff erreicht wird. The object of the invention is to provide a ski described in the opening paragraph Generate to create in which an increased shear strength of the boundary layer between Reinforcement material and foam is achieved.

Diese Aufgabe ist dadurch gelöst, daß das Verstärkungsmaterial von einer Schicht aus kleinen Glasperlen gebildet ist, die mit der Gehäuseinnenfläche durch einen dauerelastischen Leim verklebt sind. Diese Kugeln werden allseitig umschäumt, so daß sich der Schaumstoff an ihnen verankern kann. Durch die dauerelastische Verbindung der Kugeln mit den Gehäuseinnenflächen wird eine begrenzte Beweglichkeit und damit eine Art Kugellagerwirkung erreicht, die schonende Belastung gewährleistet und zu starke Belastungen infolge zu unterschiedlicher Elastizitätsmodule zwischen Gehäuse und Kern vermeidet. This object is achieved in that the reinforcing material of a layer of small glass beads is formed, which is connected to the inner surface of the case are glued by a permanently elastic glue. These balls are foamed on all sides, so that the foam can anchor itself to them. Due to the permanently elastic connection of the balls with the inner surfaces of the housing is limited mobility and thus a kind of ball bearing effect is achieved, which ensures and protects the load heavy loads as a result of too different moduli of elasticity between the housing and core avoids.

Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen. Further developments of the invention emerge from the subclaims.

Die Erfindung wird im folgenden anhand einer schematischen Querschnittsdarstellung näher erläutert. The invention is illustrated below with the aid of a schematic cross-sectional illustration explained in more detail.

Der Ski besteht im wesentlichen aus einer Oberplatte 1, einer Unterplatte 2 und zwischen diesen angeordneten Seitenteilen 3 und 4, wobei Ober- und Unterplatte mit zusätzlichen Belägen und im übrigen an den Rändern mit Metallkanten ausgerüstet sein können, die der Einfachheit halber nicht dargestellt sind. Die Innenfläche des so gebildeten Kastens ist mit einem dauerelastischen Leim 5 versehen, mit dessen Hilfe eine Schicht aus Glaskugeln 6 an der Innenfläche des Gehäuses verankert ist. Der verbleibende Raum ist mit einem Zweikomponenten-Kunststoff schaum 7 aus gefüllt, der sich in den Zwischenräumen zwischen den Kugeln verankert. Die Kugeln haben vorzugsweise eine Größe von 700 bis 800>i und sind vorteilhaft gehärtet, so daß sie eine mhos-Härte von 7,8 bis fast 8 erreichen. The ski essentially consists of an upper plate 1, a lower plate 2 and between these arranged side parts 3 and 4, with top and bottom plate with additional coverings and also equipped with metal edges on the edges which, for the sake of simplicity, cannot be are shown. The inner surface of the box formed in this way is covered with a permanently elastic glue 5 provided, with the help of which a layer of glass balls 6 on the inner surface of the Housing is anchored. The remaining space is made with a two-component plastic foam 7 filled, which anchors itself in the spaces between the balls. The balls preferably have a size of 700 to 800> i and are advantageous hardened so that they reach a mhos hardness of 7.8 to almost 8.

Claims (3)

Patentansprüche Ö Kunststoffski mit einem aus Oberplatte, Unterplatte und Seitenteilen gebildeten Gehäuse, das mit Kunststoffschaum ausgefüllt ist, zwischen dem und der Innenfläche des Gehäuses ein Verstärkungsmaterial vorgesehen ist, das mit der Gehäuseinnenfläche verklebt und vom Schaumstoff durchschäumt ist, dadurch gekennzeichnet, daß das Verstärkungsmaterial von einer Schicht aus kleinen Glasperlen (6) gebildet ist, die mit Gehäuseinnenfläche durch einen dauerelastischen Leim (5) verklebt sind. Patent claims Ö plastic ski with a top plate, bottom plate Housing formed and side parts, which is filled with plastic foam, between the and the inner surface of the housing a reinforcing material is provided which is glued to the inner surface of the housing and foamed through by the foam, thereby characterized in that the reinforcement material consists of a layer of small glass beads (6) is formed, the inner surface of the housing by a permanently elastic glue (5) are glued. 2. Ski nach Anspruch 1, dadurch gekennzeichnet, daß die Glasperlen (6) eine Größe von 700 bis 800 P haben, 2. Ski according to claim 1, characterized in that the glass beads (6) have a size of 700 to 800 P, 3. Ski nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Glasperlen auf eine Härte von 7,8 bis 8 mhos gehärtet sind.3. Ski according to claim 1 or 2, characterized in that that the glass beads are hardened to a hardness of 7.8 to 8 mhos.
DE19762647877 1976-10-22 1976-10-22 Plastics ski filled with expanded foam - has glass balls on inside of wall panels to increase shear strength between foam and wall panels Pending DE2647877A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19762647877 DE2647877A1 (en) 1976-10-22 1976-10-22 Plastics ski filled with expanded foam - has glass balls on inside of wall panels to increase shear strength between foam and wall panels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762647877 DE2647877A1 (en) 1976-10-22 1976-10-22 Plastics ski filled with expanded foam - has glass balls on inside of wall panels to increase shear strength between foam and wall panels

Publications (1)

Publication Number Publication Date
DE2647877A1 true DE2647877A1 (en) 1978-04-27

Family

ID=5991149

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19762647877 Pending DE2647877A1 (en) 1976-10-22 1976-10-22 Plastics ski filled with expanded foam - has glass balls on inside of wall panels to increase shear strength between foam and wall panels

Country Status (1)

Country Link
DE (1) DE2647877A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0409108A1 (en) * 1989-07-14 1991-01-23 GERMINA SKIFABRIK SCHMALKALDEN GmbH Body for a gliding device, in particular for a ski and method of making same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0409108A1 (en) * 1989-07-14 1991-01-23 GERMINA SKIFABRIK SCHMALKALDEN GmbH Body for a gliding device, in particular for a ski and method of making same

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