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 panelsInfo
- 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
Links
- 239000011521 glass Substances 0.000 title claims abstract description 8
- 239000004033 plastic Substances 0.000 title claims abstract description 7
- 229920003023 plastic Polymers 0.000 title claims abstract description 7
- 239000006260 foam Substances 0.000 title claims description 9
- 239000002984 plastic foam Substances 0.000 claims abstract description 6
- 239000011324 bead Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 239000012779 reinforcing material Substances 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 238000005452 bending Methods 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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
Landscapes
- Laminated Bodies (AREA)
Abstract
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)
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)
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 |
-
1976
- 1976-10-22 DE DE19762647877 patent/DE2647877A1/en active Pending
Cited By (1)
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OHJ | Non-payment of the annual fee |