EP1004335B1 - Gleitbrett und Verfahren zur Herstellung desselben - Google Patents
Gleitbrett und Verfahren zur Herstellung desselben Download PDFInfo
- Publication number
- EP1004335B1 EP1004335B1 EP99120781A EP99120781A EP1004335B1 EP 1004335 B1 EP1004335 B1 EP 1004335B1 EP 99120781 A EP99120781 A EP 99120781A EP 99120781 A EP99120781 A EP 99120781A EP 1004335 B1 EP1004335 B1 EP 1004335B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- core
- sliding board
- stretched
- board according
- cell walls
- 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.)
- Expired - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 21
- 210000002421 cell wall Anatomy 0.000 claims abstract description 20
- 239000004033 plastic Substances 0.000 claims abstract description 17
- 229920003023 plastic Polymers 0.000 claims abstract description 17
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 15
- 239000011162 core material Substances 0.000 claims description 64
- 238000000034 method Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 8
- 239000004593 Epoxy Substances 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 6
- 239000011152 fibreglass Substances 0.000 claims description 6
- -1 polypropylene Polymers 0.000 claims description 6
- 239000002023 wood Substances 0.000 claims description 5
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 4
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 claims description 4
- 239000004793 Polystyrene Substances 0.000 claims description 3
- 238000005304 joining Methods 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 229920000515 polycarbonate Polymers 0.000 claims description 2
- 239000004417 polycarbonate Substances 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 229920002223 polystyrene Polymers 0.000 claims description 2
- 230000003116 impacting effect Effects 0.000 claims 1
- 238000002407 reforming Methods 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- 229920000114 Corrugated plastic Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000271 Kevlar® Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 229920006352 transparent thermoplastic Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000004584 weight gain Effects 0.000 description 1
- 235000019786 weight gain Nutrition 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Images
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
- A63C5/126—Structure of the core
-
- 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 gliding board for gliding on snow or another Underground, with a honeycomb-like lightweight core that can pass through a variety of Cell walls have limited cavities.
- the invention further relates to a method for the production of such a sliding board.
- Such a gliding board that a ski, a snowboard or other sports equipment for Gliding on snow, another solid surface or on water can, for example, is described in AT-PS 23 13 23.
- a ski with one between an upper and a lower outer plate
- This honeycomb structure formed by the plastic strips is with the glued upper and lower outer plate, so that between the two outer plates a weight-saving core, a so-called lightweight core, is created.
- the core consists of a stretched thermoplastic Plastic and the cavities and cell walls are due to stretching of the plastic shaped in the thickness direction of the sliding board.
- the through the thermoplastic The core structure produced by stretching is not only inherently more stable than the known one Structure made of corrugated plastic strips, but points to their top and bottom - According to the large contact area of the stretching used Metal components - essential compared to the conventional plastic strip structure larger areas of typically 50% of the full area, which for Gluing with upper and lower chord can be used and any tension that occurs and transfer loads. Therefore, the gliding board according to the invention much more stable against shear or impact loads. in view of the large adhesive surface, no additional fasteners are required. The weight and moment of inertia of a sliding board of this design are extremely small. Such a sliding board is even lighter in practical use rotatable and more maneuverable than known sliding boards according to the prior art Technology.
- thermoplastics from the group polystyrene, polypropylene, polycarbonate, ABS, polyacetate or Select polyethylene terephthalate.
- the cell walls extend the honeycomb structure inclined to the thickness direction.
- This version has compared to the previously known honeycomb structures with vertical Cell walls have the advantage of further increased strength against impact stress and shear.
- the top and bottom of the lightweight core is made of the material of the Core and the molded open cavities.
- the surface preferably exists the top and bottom are less than 80% voids.
- fill the end faces of the cell walls or integrally with them molded core material preferably more than 30%, in particular more than 40% of the surface of the top and bottom. Typically this is for gluing available area about 50% of the total upper or bottom of the core. For special applications such as Downhill Rennsportski the area of the core material can still be considerably larger than 50% his.
- the lightweight core is made of one layer and has the length of the Sliding boards seen different thicknesses.
- the core is in the middle of the sliding board is thicker than towards its front and rear ends.
- a preferred embodiment provides side walls that are flat with the thermoplastic stretched plastic are glued. These serve for additional Stabilization of the sliding board.
- the side walls can be advantageous Epoxy fiberglass, wood veneer or temperature-stable thermoplastics and thermosets exist.
- thermoplastic stretched plastic encloses a large number of cavities, it is advantageous if in a stretched through the thermoplastic Plastic and partial volume surrounded by cavities is a solid material is incorporated.
- Such massive materials for example within in the lightweight core milled channels are used for fastening binding screws or other holding devices more suitable than the one according to the invention, lightweight structure itself with cavities. Thanks to this embodiment the majority of the core volume can be filled in a way that saves material and weight without sacrificing pull-out strength.
- the above object is achieved according to the invention solved in that the core from a thermoplastic core blank is formed, which is thermally stretched in the thickness direction such that the Cavities and the cell walls delimiting them are formed.
- the core blank is placed between two heated plate-shaped tools and brought into contact with them. Once the surface of the core blank both melt and adhere to the plate-shaped tools Plates apart. By flowing the semi-melted plastic the blank is stretched in the thickness direction and the honeycomb structure with the Cavities and the cell walls delimiting them.
- the thickness profile of the Kerns formed without cutting causes damage avoided the honeycomb structure of the lightweight core, such as by Cutting, milling, planing or the like can be effected easily.
- the thickness curve of the same seen over the length of the sliding board the usually increases from both ends towards the middle of the board, without cutting into the core formed.
- the course of the thickness of the core can also in the width direction, in particular its top contour, can be molded without cutting, also special contour designs such as thickening in the bond area can be formed in this way become.
- the course of the thickness can occur directly when the core blank is stretched be formed.
- the core blank becomes different in the thickness direction severely stretched.
- the core blank is made in these sections just pulled stronger, i.e. stretched more in the thickness direction.
- the thickness profile of the core can also be formed by the Core blank initially to a substantially cuboid body Thickness is stretched and the stretched body by acting on it Pressure and heat are transformed into the desired thickness profile in a mold becomes.
- the core thickness distribution can coincide with the pressing process can be obtained by the stretched core body through the pressing process under pressure and temperature in a suitable form simultaneously with the Pressing the other ski components into the correct core thickness distribution becomes. At the same time for joining the outer layer or the outer layers this is brought to the core in the desired thickness profile.
- the previously described execution of the thickness training immediately at Stretching can advantageously also be used for materials that a subsequent formation of the thickness curve by applying heat and pressure not allow or difficult to allow.
- the top flange of the alpine ski shown here typically consists of layers of epoxy fiberglass 5, aluminum 6 and ABS 7.
- the side walls 3 are also made of ABS 7, while the tread 8 of the lower flange is laterally surrounded by steel edges.
- layers 5, 6 made of epoxy fiberglass and aluminum are between the running or sliding surface of the lower flange and the core 4.
- Fig. 2 an alpine ski is shown in sandwich construction, the lightweight core 4, the top and side of a trough-shaped upper flange 10 transparent thermoplastic and various epoxy GF prepreg reinforcements 11 is surrounded.
- the sliding surface 8 again consists of polyethylene, wherein the sliding surface is again bordered by steel edges 9.
- the alpine ski shown in Fig. 3 has a lightweight core 4, initially is glued on top and bottom with cover layers 15 with epoxy fiberglass. The so stabilized The core is then in a two-point process step in the polyurethane injection process with a themoplastic cover layer 10 and the lower flange have been connected, both on the side facing the core with Reinforcing inserts 12 are provided.
- the lower belt has one Slide surface 8 made of polyethylene, which is edged on the side with steel edges 9.
- the Cover layers of the thermoplastic stretched plastic core 4 preferably exist made of aluminum and technical synthetic fibers such as carbon or kevlar.
- Fig. 4 shows a lightweight core 4 with two solid blocks of material 13, the areas are introduced within the pre-milled channels in the lightweight core 4 and alone or with the help of inserts for receiving binding screws or the like serve.
- Typical core materials for these massive blocks of material 13 are wood, thermoplastics or thermosets.
- a thicker, preferably inclined side cheek 14 each inserted laterally become.
- the bonding of flat ski building materials such as epoxy fiberglass, laminates, Wood veneers or temperature-stable thermoplastics or thermosets can at the same time as the core and top and bottom chords are glued or in one own process step.
- FIG. 6 shows how sheets made of a thermoplastic Plastic 100 are placed between two heated steel plates 102.
- Out 7 shows that the steel plates 102 with the surface of the plastic 100 can be brought into contact. Even a little pressure creates an adhesion between the surface of the plastic and the heated plates.
- From the illustration 8 shows how the two plates 102 move away from one another and how the semi-melted plastic 100 begins to flow.
- the plastic expands and, as shown in FIG. 9, forms a geometric one uniform core structure, the appearance of which depends on how the surface of the heated plates is structured.
- the contact surfaces of the metal plates are actually Surface pattern with a variety of cutouts.
- the surfaces of such panels are made of approximately 50% solid material. It’s an important differentiator from the previously known honeycomb structures, a certain amount only by applying top layers Achieve bending strength. While the pure stretching is already a flexural strength causes 50 to 100 times that of the extruded starting plate lies, the value can be increased to 300 to 1000 times, if additional Cover layers are applied.
- the invention can be used in particular for alpine skiing in the "all mountain” area (skiing on and off the slopes). Build these universal skis in Comparison wider, because stronger waist radii are used here. That would fundamentally lead to a strong weight gain of the ski, which is disadvantageous affects rotatability and maneuverability. Because of the invention Weight reduction, however, can make the rotatability and maneuverability essential be improved. The trend in snowboarding is also towards lightweight construction, because even with snowboarding due to a lighter weight, the turning and Maneuverability can be improved significantly. The inventive one can also be used here Apply solution successfully.
Landscapes
- Laminated Bodies (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Description
- Fig. 1:
- Einen Querschnitt einer ersten Ausführungsform eines Gleitbretts mit einem Kern aus thermoplastisch verstrecktem Kunststoff,
- Fig. 2:
- eine weitere Ausführungsform im Querschnitt in Schalenbauweise mit wannenförmigem Obergurt,
- Fig. 3:
- eine weitere Ausführungsform der vorliegenden Erfindung im Querschnitt,
- Fig. 4:
- eine Ausführungsform der Erfindung im Querschnitt mit massiven, in den Leichtbaukern eingearbeiteten Werkstoffblöcken,
- Fig. 5:
- einen Querschnitt durch eine letzte Ausführungsform mit stabilisierenden Seitenwangen und
- Fig. 6-9:
- eine schematische Darstellung des Herstellverfahrens des Leichtbaukernes.
Claims (13)
- Gleitbrett zum Gleiten auf Schnee oder einem sonstigen Untergrund, mit einem wabenartigen Leichtbaukern, der eine Vielzahl von durch Zellwände begrenzten Hohlräumen aufweist,
dadurch gekennzeichnet, daß der Kern (4) aus einem verstreckten thermoplastischen Kunststoff besteht und die Hohlräume und Zellwände durch Verstreckung des Kunststoffs in Dickenrichtung des Gleitbretts geformt sind. - Gleitbrett nach Anspruch 1, wobei sich die Zellwände (16) zur Dickenrichtung geneigt erstrecken.
- Gleitbrett nach einem der vorhergehenden Ansprüche, wobei der Kem (4) einen spanlos geformten Dickenverlauf besitzt.
- Gleitbrett nach einem der vorhergehenden Ansprüche, wobei der Kern (4) über seine Länge gesehen in Dickenrichtung unterschiedlich stark verstreckt ist.
- Gleitbrett nach einem der vorhergehenden Ansprüche, wobei die Fläche der Ober- und/oder Unterseite des Kerns (4) zu mindestens 20%, vorzugsweise zu mehr als 40%, insbesondere etwa zu 50% vom Material des Kerns (4) ausgefüllt ist.
- Gleitbrett nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der thermoplastische Kunststoff aus der Gruppe Polystyrol, Polypropylen, Polycarbonat, ABS, Polyacetat oder Polyethylentereftalat ausgewählt ist.
- Gleitbrett nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Seitenflächen des Kerns mit Seitenwangen verklebt sind.
- Gleitbrett nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, daß die Seitenwangen aus Epoxifiberglas, Holzfurnier oder temperaturstabilen Thermo- und Duroplasten bestehen.
- Gleitbrett nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß in entsprechend ausgenommenen Hohlräumen des Kerns massive Kernwerkstoffe wie Holz-, Thermoplast oder Duroplast eingearbeitet sind.
- Verfahren zur Herstellung eines Gleitbretts aus einem wabenartigen Leichtbaukem (4) mit einer Vielzahl von durch Zellwände (16) begrenzten Hohlräumen und zumindest einer Außenschicht, bei dem der Kern geformt und mit der Außenschicht gefügt wird, dadurch gekennzeichnet, daß der Kern (4) aus einem thermoplastischen Kernrohling geformt wird, der in Dickenrichtung thermisch verstreckt wird derart, daß die Hohlräume und die diese begrenzenden Zellwände (16) ausgebildet werden.
- Verfahren nach dem vorhergehenden Anspruch, wobei der Dickenverlauf des Kerns spanlos geformt wird.
- Verfahren nach einem der vorhergehenden Ansprüche 10 bis 11, wobei der Kernrohling zur Formung seines Dickenverlaufs in Dickenrichtung unterschiedlich stark verstreckt wird.
- Verfahren nach einem der vorhergehenden Ansprüche 10 bis 12, wobei der Kernrohling zunächst zu einem im wesentlichen quaderförmigen Korpus gleichbleibender Dicke verstreckt wird und der verstreckte Korpus durch Beaufschlagung mit Druck und Wärme in einer Form in den gewünschten Dickenverlauf umgeformt wird, wobei vorzugsweise die Umformung gleichzeitig mit dem Fügen der Außenschicht bewerkstelligt wird.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853265 | 1998-11-18 | ||
| DE19853265A DE19853265C1 (de) | 1998-11-18 | 1998-11-18 | Gleitbrett |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1004335A2 EP1004335A2 (de) | 2000-05-31 |
| EP1004335A3 EP1004335A3 (de) | 2000-08-23 |
| EP1004335B1 true EP1004335B1 (de) | 2004-02-04 |
Family
ID=7888266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99120781A Expired - Lifetime EP1004335B1 (de) | 1998-11-18 | 1999-10-20 | Gleitbrett und Verfahren zur Herstellung desselben |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1004335B1 (de) |
| AT (1) | ATE258817T1 (de) |
| DE (2) | DE19853265C1 (de) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2387005A1 (en) | 2000-08-16 | 2002-02-21 | K-2 Corporation | Snowboard with partial sidewall |
| FR2865412B1 (fr) * | 2004-01-28 | 2006-02-17 | Skis Dynastar | Planche de glisse sur neige pour enfants et procede de fabrication |
| DE102007048562B4 (de) | 2007-10-09 | 2011-05-26 | Matthias Auer | Wassersportgerät, insbesondere Wasserski oder Surfbrett |
| DE202011000269U1 (de) | 2011-02-05 | 2012-05-16 | Jörg Kaufmann | Gleitsportgerät, insbesondere Snowboard, Ski und dergleichen |
| DE102012100965A1 (de) | 2012-02-06 | 2013-08-08 | Jörg Kaufmann | Gleitsportgerät, insbesondere Snowboard, Ski und dergleichen und Verfahren zu dessen Herstellung |
| DE102012110345B4 (de) | 2012-10-29 | 2015-07-09 | Head Technology Gmbh | Gleitbrett |
| DE202012104147U1 (de) | 2012-10-29 | 2013-01-25 | Head Technology Gmbh | Gleitbrett |
| WO2015139102A1 (pt) * | 2014-03-17 | 2015-09-24 | Ilmar Laurindo | Conjunto de forros em termoplástico, tipo perfil para desenvolvimento de móveis em geral |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT231323B (de) * | 1961-02-28 | 1964-01-27 | Anton Kaestle | Mehrschichtenschi |
| BE793429A (fr) * | 1971-12-29 | 1973-06-28 | Union Carbide Corp | Appareil de formage de matieres thermoplastiques |
| DE7405074U (de) * | 1973-02-22 | 1974-07-25 | Kaestle Gmbh | Ski in Verbundbauweise |
| JPS52147129A (en) * | 1976-06-02 | 1977-12-07 | Nippon Gakki Seizo Kk | Production method of ski |
| US4264293A (en) * | 1980-01-25 | 1981-04-28 | Norfield Corporation | Vented heated platen |
| US4269586A (en) * | 1980-01-25 | 1981-05-26 | Norfield Corporation | Heated platen |
| ATE8582T1 (de) * | 1980-03-20 | 1984-08-15 | N.V. Bekaert S.A. | Energieabsorbierende konstruktion, insbes. fuer skis. |
| DD280654A3 (de) * | 1987-03-17 | 1990-07-18 | Komb Sportgeraete Veb | Leichtbaukern |
| DE3931451A1 (de) * | 1989-09-21 | 1991-04-11 | Hoechst Ag | Dimensionsstabiler verbundkoerper, verfahren zu seiner herstellung und seine verwendung |
| US5544908A (en) * | 1994-05-06 | 1996-08-13 | K-2 Corporation | Thermoplastic composite ski and method of manufacture |
| CH686028A5 (de) * | 1994-05-31 | 1995-12-15 | Urs P Meyer | Snowboard in Mehrschichtenbauweise |
| DE9411810U1 (de) * | 1994-07-21 | 1994-09-22 | U.S.P. Unique Sports Products Marketing und Vertriebs GmbH, 81377 München | Snowboard |
-
1998
- 1998-11-18 DE DE19853265A patent/DE19853265C1/de not_active Expired - Fee Related
-
1999
- 1999-10-20 DE DE59908456T patent/DE59908456D1/de not_active Expired - Fee Related
- 1999-10-20 EP EP99120781A patent/EP1004335B1/de not_active Expired - Lifetime
- 1999-10-20 AT AT99120781T patent/ATE258817T1/de not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE19853265C1 (de) | 2000-07-20 |
| EP1004335A3 (de) | 2000-08-23 |
| EP1004335A2 (de) | 2000-05-31 |
| DE59908456D1 (de) | 2004-03-11 |
| ATE258817T1 (de) | 2004-02-15 |
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