EP0630667A2 - Verfahren zur Herstellung eines Ski, sowie Vorrichtung zur Durchführung dieses Verfahrens - Google Patents

Verfahren zur Herstellung eines Ski, sowie Vorrichtung zur Durchführung dieses Verfahrens Download PDF

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Publication number
EP0630667A2
EP0630667A2 EP94108721A EP94108721A EP0630667A2 EP 0630667 A2 EP0630667 A2 EP 0630667A2 EP 94108721 A EP94108721 A EP 94108721A EP 94108721 A EP94108721 A EP 94108721A EP 0630667 A2 EP0630667 A2 EP 0630667A2
Authority
EP
European Patent Office
Prior art keywords
shell
shell material
mold
ski
filling
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Withdrawn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
EP94108721A
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German (de)
English (en)
French (fr)
Other versions
EP0630667A3 (cs
Inventor
Franz Schenner
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.)
Blizzard GmbH
Original Assignee
Blizzard GmbH
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 Blizzard GmbH filed Critical Blizzard GmbH
Publication of EP0630667A2 publication Critical patent/EP0630667A2/de
Publication of EP0630667A3 publication Critical patent/EP0630667A3/xx
Withdrawn legal-status Critical Current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 invention relates to a method for producing skis with a sliding surface, a core and a surface shell. Furthermore, the invention relates to a device which is produced according to this method.
  • a method for producing a ski has become known, in which a shell material forming the side surfaces and surface is placed flat over a counter mold and is pressed into the counter mold by the prefabricated core after heating. This pressing process plastically deforms the shell material (which can also consist of several layers, such as reinforcing layers or thermoplastic filler materials) into the desired final contour or with the formation of ridges or depressions on the outside of the ski.
  • the shell material which can also consist of several layers, such as reinforcing layers or thermoplastic filler materials
  • DE-A-39 14 189 describes a method for producing a ski in which a cover layer which forms the side surface and surface consists of a preformed thermoplastic shell or layers which are flexible at ambient pressure and temperature. Both the thermoplastic shell, in the course of thermoforming, and the layers which are flexible before the final molding process at ambient pressure and ambient temperature, in the course of the pressing process, are subjected to a plastic deformation.
  • a disadvantage of the processes described is that only processes and materials can be used for printing on the shell materials, which usually takes place before plastic forming, which allow plastic deformation (flow of the shell material) in sufficient form.
  • DE-C 38 03 483 a process in which this decoration is carried out by supplementation (thermal diffusion printing).
  • the printing of the flat shell material before the deformation can also be carried out conventionally using the screen printing process if appropriate elastic screen printing inks are used.
  • the selection of the applicable colors in this process is very limited and the print sharpness in the two described decoration processes is very different due to the subsequent thermoplastic flow of the shell material, so that only simple and not sharply delimited designs can be used.
  • EP 0 498 963 in turn describes a method for producing a ski, in which an upper part element consisting of a stretchable outer skin with a small thickness and elasticity consists of a lower part element consisting of a tread covering, lateral steel edges, a core and upper and lower flange Synthetic resin foam is arranged, the synthetic resin foam being arranged between the stretchable outer skin. Due to the fact that the material has to be stretchable for the outer skin, it is also not possible with this process to use customary design processes in ski construction, e.g. to use the screen printing process or the shell material must always be preformed in a separate operation.
  • EP 0 526 353 A1 describes a method for producing a ski in which a shell material is pressed against the contour of the upper molded part via the driving force of the foam system.
  • the disadvantage of this method is that the shell material has to be preformed accordingly in a separate operation so that during the subsequent molding process the filler (foam) cannot escape into the space between the upper part of the mold and the shell material.
  • the shell material Due to the fact that the geometry of the shell to be pre-shaped varies over the length of the ski, the shell material must be pre-shaped thermoplastic (i.e. flowing), which is why the partially necessary flow of the shell material must be taken into account when designing the design. In the case of these processes as well, as in the previously described processes, this leads to a severe restriction of the printing processes and printing inks.
  • the object of the present invention is to develop a method of the type mentioned at the outset such that no thermoplastic or plastic deformation of the shell material is necessary when shaping the ski shell, so that the above-mentioned restrictions due to the printing method no longer apply or are not necessary to pre-deform the shell material accordingly three-dimensionally.
  • a generic method for producing a shell ski is used according to the invention, which has the method steps mentioned in the characterizing part of the main claim. This allows the shell material forming the side and surface to adapt to the contour given by the shape during the shaping of the surface and side surface structure without elastic or thermoplastic or thermoset deformation.
  • the ski is preferably produced using the polyurethane injection process or another mold filling process which has sufficient expansion pressure of the filler to form the shell material or the composite, as described below, against the inner contour of the upper molded part.
  • the shell material can be in the area of the surface reinforcement materials along the length of the ski.
  • the reinforcing materials are either previously glued to the shell material or glued in a punctiform manner and subsequently connected to the shell material during the mold filling process or reinforced by belt materials which are permeable to the filling material and are placed near the surface of the shell via spacers.
  • 1 denotes an upper part of an outer shape or foam shape, which is used to produce a ski when interacting with a lower part 2 of the outer shape or foam shape.
  • the later shell material 3 forming the ski side and surface is provided in the central region with a reinforcement 4, preferably made of epoxy fiber glass, epoxy prepreg, aluminum, carbon laminate, etc.
  • the surface of this composite can be transparent with printing on the back or opaque or colored with printing on the top and is preferably provided on the surface with a protective or release film which is removed after the ski has been removed from the mold or finished.
  • the shell composite 3, 4 forms a cover lying parallel over the ski substructure, consisting of the running surface 6, steel edges 7, lower flange 8.
  • the lower flange 8 can consist, for example, of epoxy fiberglass, epoxy prepreg, aluminum, spring steel or glass mats, etc.
  • the ski completed with the device according to FIG. 1 is shown in section in FIG. 2 lying in the device. It can be seen here that the shell composite 3, 4 is pressed against the inner contour of the upper part of the outer mold during the mold filling process by the expansion pressure of the filling material 9, the shell material 3 being simultaneously pulled inwards in the lateral grooves between the upper and lower parts of the mold. In this way, there is no plastic deformation (flowing deformation) of the shell material, so that the design of the shell material already applied to the top and bottom sides in the printing process is changed or destroyed in the course of shaping the end contour of the side and surfaces.
  • FIG. 3 Another possibility of producing a ski using this method is shown in FIG. 3.
  • the reinforcement 10 applied to the shell material 3 in the central region is connected to the shell material only at points with spacers 11 and is connected to the surface of the filling material 9 during the mold filling process.
  • the embodiment shown in FIG. 4 shows a ski manufactured according to a modified method.
  • the reinforcement layer 12 arranged in the middle region of the shell material 3 over the ski length is perforated here or permeable to the film material and is pressed against the shell material via spacers 13.
  • the reinforcement layer is then pressed against the upper mold part 1 by the expansion pressure of the filler material 9 with the shell material 3, the filler material 9 also penetrating through the reinforcement layer 12 and connecting the reinforcement layer 12 to the shell.
  • the reinforcement layer 12 e.g. perforated spring steel or correspondingly stiff reinforcement fabric that is sufficiently permeable to the filling material can be used.
  • depressions and / or elevations of the inner surface of the outer mold 1 can be formed by mold parts which can be laid, as is indicated schematically in FIG. 5 by 14.
  • Molding 14 would thus be possible to provide an additional increase in the surface area in the central area of the ski, it being immediately apparent from this that various covers, the areas corresponding to the depressions 15 and 16, provide a wide variety of three-dimensional designs of the surface structure of the surface shell 3 completed skis are achievable.
  • the surface of the shell material 3 can be structured if the inner surface of the outer mold 1 is provided with a corresponding structure 17.
  • these structures 17 can be, for example, wood or leather grain, or fish scale-like shapes, longitudinal grooves or cross-edging or the like. In addition to the optical effect, this also achieves the technical advantage of higher abrasion resistance.
EP94108721A 1993-06-09 1994-06-07 Verfahren zur Herstellung eines Ski, sowie Vorrichtung zur Durchführung dieses Verfahrens Withdrawn EP0630667A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4319245 1993-06-09
DE19934319245 DE4319245A1 (de) 1993-06-09 1993-06-09 Verfahren zur Herstellung eines Ski, sowie Vorrichtung zur Durchführung dieses Verfahrens

Publications (2)

Publication Number Publication Date
EP0630667A2 true EP0630667A2 (de) 1994-12-28
EP0630667A3 EP0630667A3 (cs) 1995-01-18

Family

ID=6490051

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94108721A Withdrawn EP0630667A2 (de) 1993-06-09 1994-06-07 Verfahren zur Herstellung eines Ski, sowie Vorrichtung zur Durchführung dieses Verfahrens

Country Status (2)

Country Link
EP (1) EP0630667A2 (cs)
DE (1) DE4319245A1 (cs)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2878756A1 (fr) * 2004-12-07 2006-06-09 Salomon Sa Procede de fabrication d'une planche de glisse en structure composite et a noyau injecte et planche obtenue par la mise en oeuvre du procede
FR2879939A1 (fr) 2004-12-29 2006-06-30 Salomon Sa Procede de fabrication d'une planche de glisse ou de roulage a structure composite

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2916985B1 (fr) * 2007-06-07 2009-11-06 Skis Dynastar Soc Par Actions Planche de glisse sur neige et procede de fabrication d'une telle planche.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4705471A (en) * 1985-08-02 1987-11-10 Mobil Oil Corporation Mold for producing a plate
FR2654644B1 (fr) * 1989-11-22 1992-03-13 Salomon Sa Procede de fabrication d'un ski injecte, et structure de ski obtenue par ce procede.
FR2672810B1 (fr) * 1991-02-14 1993-04-23 Salomon Sa Ski alpin destine a glisser sur la neige et sur la glace.
FR2677918A1 (fr) * 1991-06-18 1992-12-24 Rossignol Sa Procede pour la fabrication d'une structure moulee complexe comportant un noyau de mousse en matiere plastique et ski obtenu par la mise en óoeuvre de ce procede.
GB2259883A (en) * 1991-09-28 1993-03-31 Rover Group Moulding against a shape or surface imparting film liner
DE4233631C2 (de) * 1992-10-06 1994-09-29 Head Sport Ag Verfahren zur Herstellung von Ski sowie Vorrichtung zur Durchführung dieses Verfahrens

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2878756A1 (fr) * 2004-12-07 2006-06-09 Salomon Sa Procede de fabrication d'une planche de glisse en structure composite et a noyau injecte et planche obtenue par la mise en oeuvre du procede
EP1669111A1 (fr) * 2004-12-07 2006-06-14 Salomon S.A. Procédé de fabrication d'une planche de glisse en structure composite et à noyau injecté et planche obtenue par la mise en oeuvre du procédé
FR2879939A1 (fr) 2004-12-29 2006-06-30 Salomon Sa Procede de fabrication d'une planche de glisse ou de roulage a structure composite

Also Published As

Publication number Publication date
DE4319245A1 (de) 1994-12-15
EP0630667A3 (cs) 1995-01-18

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