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
  • A63C5/003—Structure, covering or decoration of the upper ski surface
• • 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 multilayer film for the construction of skis, in particular for application to a base body of an Aipin ski, water skis, wakeboards, kiteboards, surfboards or a snowboard, a ski, in particular an alpine ski or a snowboard, a method for producing a multi-layer film for the construction of skis and a method for producing a ski.
• the invention is now based on an embodiment of a ski as described in WO 2/28491 A1.
• the ski consists of a base body that is formed from a piece of wood and of several elements that are applied to this base body.
• the underside of the base body has a thin metal layer and two steel edge elements on the sides.
• a tread made of a plastic material is applied underneath the metal layer.
• On the surface of the base body a connecting layer consisting of a glass fiber fabric is applied, which is connected to the metal layer above and to the surface by means of a resin Basic body is glued. Graphic elements can then be applied to the metal layer.
• the metal layers consist of steel, aluminum, aluminum alloys or titanium.
• the thickness of the metal layers is 0.008 inches to 0.02 inches.
• the ski is manufactured as follows: The metal layer is glued to the side parts using connecting strips. The connection layer impregnated with resin is applied to the base body. As already described above, the connection layer created in this way has adhesive
• the prefabricated element consisting of the metal layer, the side parts and the connecting strips is applied to the connecting layer and pressed on by means of a mold, so that the prefabricated element is connected to the base body by the connecting layer.
• the invention is based on the object of improving the production of skis, in particular Aipin skis and snowboards.
• a multilayer film for the construction of skis which has a multilayer transfer or laminating film consisting of two or more thin layers, on one surface of which a mechanically load-bearing layer with a preferably high modulus of elasticity is arranged and on the other surface a cover layer is arranged.
• the invention further relates to a ski, in particular an alpine ski or a snowboard, in which such a multilayer film is applied to a basic ski body.
• the invention further relates to a method for producing a multilayer film for the construction of skis, in which a multilayer transfer or laminating film consisting of two or more thin layers is applied to a surface of a mechanically load-bearing layer with a high modulus of elasticity, and in which a a cover layer is applied to the mechanically load-bearing surface of the multilayer transfer or laminating film.
• the invention further relates to a method for producing a ski, in which a multilayer film as described above is applied to a ski base body.
• Transfer or laminating film in the sense of the invention is to be understood as the functional film body of a transfer or laminating film, which may be a carrier film that may be used to manufacture or apply such a transfer or laminating film to an object (and then usually removed at least in the case of transfer films) not included.
• Ski in the sense of the invention is to be understood to mean all possible types of skis, for example aipin skis, cross-country skis, snowboards, water skis, wakeboards, kiteboards or surfboards.
• the invention has the advantage that a variety of optical design options are opened while maintaining a high functional standard.
• the decoration process is simplified, a variety of design elements can be inserted without great effort.
• the functional properties of the ski such as, for example, the parameters torsion resistance, the desired weight distribution and the desired bending characteristic, are supported by the multilayer film according to the invention.
• Another advantage is that the manufacturing process for the production of skis with an attractive design is accelerated and cheaper.
• Another advantage is that the graphic design elements of the ski are retained over a long period of time, even when used intensively, which cannot be achieved by the previously usual methods.
• a transfer film as the transfer or laminating film, which has an adhesive layer, a functional layer and a release layer.
• the adhesive layer is used to glue the film structure to the mechanically load-bearing layer.
• the release layer is advantageously built up from a layer which enables good adhesion to the cover layer.
• the functional layer can be made up of one or more layers. Particularly effective design options for the ski can be achieved if one or more of the following layers are used as a functional layer, alone or in combination:
• a colored lacquer layer guarantees a good look and shine.
• a metal layer in combination with a decorative print can serve as a further design element.
• a metal optic can be achieved by means of a metal layer, further optically very interesting effects being achieved if a colored metal is used or a colored lacquer layer is arranged in front of the metal layer.
• Hologram representations can be used as further design elements.
• thermoformable, in particular thermoformable, film is used as the transfer or laminating film. This makes it possible to make the ski manufacturing process even more efficient.
• cover layer and the mechanically load-bearing layer thicker than the transfer or laminating film, preferably in each case at least 5 times thicker than the transfer or laminating film.
• Advantageous thickness ranges of the cover layer lie in a thickness range of 50 to 125 ⁇ m.
• Advantageous thickness ranges of the mechanically load-bearing layer are in the range from 100 ⁇ m to 2 mm.
• the multilayer film is connected to the base body of the ski, it is advantageous to emboss or structure the mechanically load-bearing layer or the cover layer.
• emboss or structure supports the functional properties on the one hand and can also serve as an interesting optical design element on the other.
• cover layer from thermoplastic material or from a screen printing ink or a cast lacquer. This guarantees good mechanical and chemical resistance. This also ensures good adhesion to the layers underneath.
• the mechanically load-bearing layer of the multilayer film or the cover layer of the multilayer film can be connected to the ski base body. If the cover layer is connected to the base body of the ski, the scratch resistance of the decorative elements is generally increased due to the generally greater layer thickness of the mechanically load-bearing layer.
• FIG. 1 shows an illustration of a section through a ski designed according to the invention.
• Fig. 2 shows a schematic representation of the structure of a multilayer film according to the invention for a first embodiment.
• FIG. 3 shows a schematic representation of the structure of a multilayer film according to the invention for a second exemplary embodiment.
• FIG. 4 shows a schematic illustration of a transfer film which is used in a multilayer film according to the invention.
• FIG. 5 shows the representation of a section through a multilayer film according to the invention.
• the ski has two edge elements 12
• Tread element 11 a metal layer 13, a ski base 14 and a multilayer film 15.
• the tread element 11 is made of a plastic material.
• the edge elements 12 are made of steel. They are in the usual form
• the metal layer 13 preferably consists of a high-strength steel, a high-strength aluminum alloy or titanium.
• the thickness of the metal layer 13 is preferably between 0.25 and 0.5 mm.
• the basic ski body 14 is made of wood.
• the ski base body 14 is made of a different material, for example a plastic material. It is also possible that the ski base body 14 is constructed from several layers. It exists for example, from a wooden core, which is covered by a glass fiber fabric. It is possible that this covering does not cover the entire surface of the wooden core and is therefore only partially formed.
• the basic ski body is constructed from a surface made of thermoplastics with an upper chord made of glass fiber fabrics or laminates, possibly in combination with a layer of Titanal. These layers are either applied to a wooden core or to a PU injection foam core.
• the multilayer film 15 is shaped in such a way that it covers the side of the ski base body 14 opposite the running surface of the Aipin ski 1 and the side surfaces of the ski base body 14.
• the multilayer film 15 preferably has a thickness of 0.25 to 2 mm. It is also possible that the multilayer film 15 has a planar shape and is thus applied, for example, only to the side opposite the running surface or to the side surfaces of the ski base body 14. It is also possible for the multilayer film 15 to completely enclose the basic ski body 14.
• the multilayer film 15 is preferably brought into the appropriate shape by means of a thermoforming process and then glued to the ski base body 14. However, it is also possible for the multilayer film 15 to be pressed onto the ski base body 14 and for this press operation to give the film 15 the shape shown in FIG. 1 and for it to be glued to the ski base body 14 at the same time.
• FIGS. 2 and 3 each disclose the structure of a film that can be used as a multilayer film 15.
• the mechanically load-bearing layer 24 consists of a thermoplastic material which has a high modulus of elasticity.
• the modulus of elasticity of the mechanically load-bearing layer 24 is preferably in the range from 800 to 2500 MPa.
• the thickness of the mechanically load-bearing layer is preferably 100 ⁇ m to 2 mm. In the preferred exemplary embodiment, which is shown in FIG. 2, the thickness of the mechanically load-bearing layer 24 is 1.8 mm.
• the thickness of the VF chrome foil used is approx. 5 ⁇ m. It consists of four layers.
• a release layer which is formed by a clear lacquer layer (polyacrylate) of approx. 2 ⁇ m thickness.
• a functional layer which is formed by an approximately 1 ⁇ m thick layer of a lacquer suitable for vapor deposition and a thin, vapor-deposited chrome layer.
• a chrome layer other metal layers can also be used. Then an adhesive layer with a thickness of approx. 2 ⁇ m is applied.
• UV protection for example cerium oxide, TiO 2 , HALS, etc.
• additional UV protection for example cerium oxide, TiO 2 , HALS, etc.
• the transfer film 23 can also be screen-printed or additionally decorated using the thermal transfer process. It is also possible to print the transfer film 23 by means of a gravure printing process or a flexographic printing process or other common printing processes.
• PC plastic polycarbonate
• PMMA polymethyl methacrylate
• ABS / TPU blends as cover layer 22.
• layer 22 is one u. U. pattern-shaped colored layer, consisting of a screen printing ink or a cast lacquer.
• the layer 21 is a layer made of a transparent cast lacquer, a transparent screen printing ink or a layer made of a thermoplastic, for example PMMA.
• the thickness of the entire cover layer is preferably 50 to 125 ⁇ m.
• layer 22 has a thickness of 50 ⁇ m and layer 21 has a thickness of 70 ⁇ m.
• the cover layer can not only be smooth but also structured.
• the mechanically load-bearing layer can be smooth or structured, for example embossed, brushed and / or scratched.
• the outer surface of the multilayer film 2 formed by the mechanically supporting layer 24 is connected to the ski base body.
• FIG. 3 shows the structure of a multilayer film 3, which can also be applied as a multilayer film 15 to the ski base body 14.
• the multilayer film 3 has a cover layer 33, a multilayer transfer or laminating film 32 and a mechanically load-bearing layer 31. When the multilayer film 3 is applied to the ski base body 14, it is after this
• the cover layer 33 is connected to the ski base body 14.
• the mechanically load-bearing layer 31 is configured like the layer 24 according to FIG. 2 and thus consists of a mechanically load-bearing thermoplastic layer made of a plastic with a high modulus of elasticity.
• the transfer or laminating film 32 is designed like the transfer or laminating film 23 according to FIG. 2.
• the cover layer 33 is a screen printing and / or cast lacquer layer, which is designed like the corresponding layer according to FIG. 2. It is also possible that the layer 33 is a layer of printing ink.
• the layer structure shown above makes it possible to connect the individual layers of the multilayer film to one another without additional adhesive.
• the mechanically load-bearing layer is connected to the transfer film or laminating film by means of an extrusion process or a hot pressing or hot stamping process.
• the mechanically load-bearing layer can be transparent or opaque.
• the cover layer is then applied, for example by means of a screen printing process.
• the use of other processes, for example dipping, spraying, flexographic printing, pad printing, gravure printing, offset printing, etc., is also possible.
• the transfer film 4 shows a transfer film 4 and a carrier 41.
• the carrier 41 preferably consists of PET and is removed when the transfer film 4 is applied to the mechanically load-bearing layer of the multilayer film.
• the transfer film 4 has a release layer 42, a replication layer 43, two thin film layer sequences 44 and 45, a metal layer 46 and an adhesive layer 47.
• the release layer 42 serves to ensure the best possible release of the transfer film 42 from the carrier 41. As already explained above, it is advantageous here to use a material for the release layer 42 that is good
• Adhesion of the top layer of the multilayer film is guaranteed. This is achieved when a layer of polyacrylate is used as the release layer 42.
• the preferred thickness of the release layer 42 is in the range of 1 to 3 microns.
• the release layer 42 thus has a double function, on the one hand as a release layer to ensure the detachment of the multilayer film 4 from the carrier 41 and on the other hand as an adhesion promoting layer for the cover layer of the multilayer film.
• the replication layer 43 preferably consists of a replication lacquer or a thermoplastic.
• the thickness of the replication layer 43 is on the order of magnitude in the range between 1 and 20 ⁇ m, preferably in the range from 5 ⁇ m to 12 ⁇ m.
• Polycarbonates or polyacrylates can be used as thermoplastic materials for the replication layer 42.
• One or more diffractive structures are embossed into the replication layer 43 by means of a transfer tool.
• a diffractive structure can be used to generate a hologram, for example, by means of optical diffraction effects. It is also possible that macro structures or symmetrical achromatic
• the thin film layers 44 and 45 form a thin film layer sequence by means of which color shifts dependent on the viewing angle can be generated.
• the layer 44 is an absorption layer which is formed, for example, by a very thin metal layer.
• Layer 45 is a spacer layer, the optical thickness of which corresponds to the ⁇ ⁇ A or ⁇ V ⁇ condition. The resulting optical interference phenomena result in color shifts that are dependent on the viewing angle.
• the thickness of the absorption layer 43 is approximately 30 to 150 A.
• the absorption layer 43 is in this case made from a semi-opaque material, for example from a chromium, nickel, titanium, vanadium, cobalt or palladium alloy. educated.
• the semi-opaque material can be formed from metal fluorides, metal oxides, metal sulfides or metal nitrides.
• Highly refractive materials that can be used are, for example, zinc sulfide (ZnS), zinc oxide (ZnO), zirconium oxide (ZrO 2 ), magnesium oxide (MgO) or silicon nitride (Si 3 N).
• Materials that can be used for a low-refractive index layer are, for example, silicon oxide (SiO x ), aluminum oxide (Al 2 O 3 ) and metal fluorides, such as, for example, magnesium fluoride (MgF 2 ).
• the spacer layer 44 can be colored. It is also possible to arrange a thin film layer sequence consisting of a plurality of alternately arranged high refractive and low refractive index thin film layers instead of the two thin film layers 44 and 45. Color shifts depending on the viewing angle can also be achieved in this way.
• the metal layer 46 is formed, for example, by a chrome layer or an aluminum layer.
• the adhesive layer 47 can be formed from an acrylic-based polymer or the like.
• a laminating film can also be used.
• the release layer 42 is replaced by an adhesion-promoting layer which, for example, is designed like the adhesive layer 47.
• the use of a laminating film makes it possible to connect a layer of thermoplastic plastic used as a covering layer to the laminating film without the application of an additional adhesive.
• the multilayer film 5 shows the structure of a multilayer film 5.
• the multilayer film 5 has a cover layer 51, a transfer film 56 and a mechanically load-bearing layer 57.
• the transfer film 56 has a release layer 52, a colored lacquer layer 53, a metal layer 54 and an adhesive layer 55.
• the cover layer 51 consists of a layer of ABS / TPU blend with a thickness of 75 ⁇ m.
• the release layer 52 consists of a polyacrylate layer with a
• the colored lacquer layer 53 consists of an evaporable lacquer and has a thickness of approximately 1 ⁇ m.
• the metal layer 54 consists of chrome and has a thickness of approximately 10 nm.
• the adhesive layer 55 consists of a pressure-activatable adhesive and has a layer thickness of approximately 2 ⁇ m.
• the mechanically load-bearing layer 57 consists of an ABS layer with a thickness of 100 ⁇ m, which preferably has a high modulus of elasticity.

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• Laminated Bodies (AREA)

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• 2002
  • 2002-08-13 DE DE10236959A patent/DE10236959B4/de not_active Expired - Fee Related
• 2003
  • 2003-08-09 EP EP03750272A patent/EP1528951A1/de not_active Withdrawn
  • 2003-08-09 US US10/524,328 patent/US7393001B2/en not_active Expired - Fee Related
  • 2003-08-09 CA CA002495273A patent/CA2495273A1/en not_active Abandoned
  • 2003-08-09 JP JP2004531673A patent/JP2005535427A/ja active Pending
  • 2003-08-09 WO PCT/DE2003/002691 patent/WO2004020054A1/de active Application Filing
  • 2003-08-09 AU AU2003269674A patent/AU2003269674A1/en not_active Abandoned

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