FR2878447A1 - Sliding/rolling board e.g. caisson type ski, decorating method for e.g. alpine skiing, involves applying physical decorative components against resin coated reinforcements, where components are encrusted in resin and cover board surface - Google Patents

Abstract

The method involves applying, during a manufacturing cycle, physical decorative components (18, 19) against reinforcements (11-14) coated with resin at non-polymerized state. The components cover only a part of the surface of a sliding or rolling board such that they are encrusted in the resin during pressing of a superposition of layers of the board. The component (18) is deposited between a sole (8) and the reinforcement (12). The decorative component (19) is deposited between the reinforcement (14) and an external layer (15). The physical decorative components can be dried natural components such as flowers, tree leaves, lace ends, fabric piece, paper piece, aluminum film, flakes, powders and metal grid. An independent claim is also included for a sliding or rolling board.

Description

Method of decorating a gliding or rolling board

  The invention relates to a method of decorating a board for gliding or rolling composite material. The invention also relates to a board for gliding or rolling by said decoration process.

  The upper and / or lower surface of a gliding or rolling board is required to have a number of features, various aesthetic markings and designs, the trade name, model identification and others. markings.

  Enriching the décor by creating attractive and new effects is an increasingly important concern for ski manufacturers. The upper or lower outer layer of a gliding or rolling board must also take into account the constraints of use and in particular the stresses of resistance of the surface and the decor to the mechanical aggressions, in particular strokes and scratches, and physicochemicals. especially temperature variations, ultraviolet, solvents, humidity.

  In the field of downhill skiing or snowboarding, an outer layer is used as a layer of thermoplastic material, for example polyurethane, polyamide-11, ABS, ABS / PU which is decorated on one or both sides.

  Two main modes of decoration are used, serigraphy and sublimation.

  To create a relief effect or a depth of field, additional contrast layers or perforated elements such as grids or lattices were added under the decorative layer. Patent applications FR2741008, FR2754450 and FR2841147 describe such decorative techniques.

  The realization of such scenery is however relatively complex and expensive. In addition to such decorations pose constraints related to the nature of the materials used, and they require the use of solvents that weaken the upper layer of ski structure.

  Also for reasons of cost they are implemented on large series, and are difficult to customize the decoration.

  An object of the invention is to achieve an original decoration by a simplified technique.

  Another object of the invention is to provide a decoration technique which facilitates the realization of personalized decorations.

  Other objects and advantages of the invention will become apparent from the following description.

  The method for decorating a gliding or rolling board made of composite material applies to a board comprising a superposition of layers assembled by pressing, and to at least one of its external faces at least one reinforcement coated with a matrix of polymerizable resin covered with a transparent covering layer. It is characterized in that during the production cycle a physical element of decoration is deposited against the resin-coated reinforcement in the unpolymerized state, said physical element covering only part of the surface of the board, such way that the physical element of decoration is encrusted in the resin of the reinforcement during the pressing of the superposition of layers.

  The gliding or rolling board has a composite structure having at least one of its outer face at least one reinforcement embedded in a polymerizable resin matrix covered with a transparent covering layer. The board is characterized in that at least one physical decorative element covering only a portion of the surface of the board is embedded in the resin of a reinforcement.

  The invention will be better understood by reference to the description below and attached drawings attached thereto.

  Figure 1 shows a ski according to the invention in plan view.

  Figure 2 shows the superposition of the elements of the ski construction of Figure 1.

  Figure 3 illustrates the implementation of the decoration method.

  FIG. 4 represents the stack of FIG. 2 after pressing the stack of FIG.

  Figure 5 relates to an alternative embodiment of the invention.

  FIG. 1 shows a top view of a ski 1. In a conventional manner, the ski is an elongate beam with a spatula 2 curved upwardly at the front, a heel 3 at the rear and a central zone 4 whose width is reduced in relation to the width of both ends.

  The ski 1 has a traditional structure, a sandwich type structure is shown in Figure 2 by way of example, but this structure is not limiting. The ski may also be of the box type or hull construction, cap construction or other.

  Thus, according to FIG. 2, the ski has a central core 5 covered above and below by sub-assemblies of upper reinforcement 6 and lower 7.

  The lower subassembly comprises a gliding sole 8 which is for example polyethylene, two side edges 9, 10 which line the sole, and one or more reinforcing layers. The reinforcements are either metal strips or fiber sheets coated with a thermosetting or thermoplastic resin. Two layers 11 and 12 are shown in Figure 2, this number is however not limiting.

  The upper subassembly similarly comprises reinforcements 13, 14 and an outer protective layer 15.

  The method of manufacturing the ski is also traditional, that is to say that the different layers of the upper 6 and lower subsets 7 and the core 5 are superimposed and pressed into a mold.

  The decoration method according to the invention can be implemented indifferently at each of the upper or lower subsets.

  Preferably a wooden core 5 is used, but a foam core machined or injected in situ in the mold could also be used. The wood core is preferred because as it will be visible at least in part, it gives a better effect of aesthetics and contrast.

  Since the core will be at least partially visible by transparency, it may itself be decorated or locally carry at least one marking made by any suitable means, dyeing, painting, ink deposit, pyrography, or other.

  Also on the side where the decoration process is implemented fiber reinforcements coated with polymerizable resin preferably metal reinforcements. These fiber reinforcements become transparent after polymerization of the resin.

  The resin used is, for example, an epoxy or acrylic resin, and the reinforcements used are reinforcements pre-impregnated with unpolymerized resin and kept at low temperature, or they are wet reinforcements impregnated with wet resin before being put into a mold. Preferably the resin is colorless, but it is also possible to use a colored resin. Also preferably a resin is used which is resistant to ultraviolet radiation.

  In the case where the method is applied to the lower subset, preferably the sliding sole 8 is transparent, in this case vis-à-vis the decoration it plays the same role as the outer layer of protection of the subassembly superior.

  According to the method of the invention, at the time of making the stack of at least one of the subsets is introduced between the outer transparent layer and the adjacent reinforcing layer or between two adjacent reinforcing layers a physical element of decoration.

  Thus, unlike a decoration by sublimation or screen printing, a physical element of decoration is used here which is physically included in the stack forming the structure of the ski. By way of example, such a physical element may be an element of a nature dried like a flower, a leaf of a tree, a piece of lace, a piece of cloth, a piece of paper, aluminum film, glitter, powders, a metal grid or not or other.

  To illustrate this, FIG. 2 shows two decorative elements 18 and 19. The element 18 is placed in the stack between the sole 8 and the reinforcement 12, and the element 19 between the outer layer 15 and the reinforcement 14. Figure 1 shows the element 19 in the form of a flower with its stem and leaves.

  The decorative element can be placed flat or partially folded on itself to give a depth effect and reinforce the contrasts in a natural way. Preferably it is a thin member or can be compressed to a small thickness. The decorative element covers only part of the surface of the ski decorated according to this process between 5 and 85% of the surface of the ski, preferably 5 and 60%, to leave the core transparent at least in part and to make visible from the outside if necessary the marking or the decoration that is the face of the core oriented towards the decorative element. The core creates a contrast effect that enhances the element of decoration.

  The rest of the face of the ski can however be partially decorated by a traditional technique applied to the outer layer of protection or the sole depending on the case.

  To illustrate this, Figure 5 shows a ski whose rear portion 23 is decorated by a traditional technique, including screen printing or sublimation, and whose front portion is decorated according to the method of the present invention. According to what is illustrated, the decoration of the front part consists of a piece of lace 25 and glitter 26.

  Naturally one could adopt any other provision of the traditionally decorated area and the decorated area according to the method of the invention.

  The decorative element is included in a resin layer between the reinforcement and the top, the resin being at its stage where it is uncured. If it is porous, such as a fabric, a lace, a dried flower, the decorative element itself impregnates the resin reinforcement.

  If it is non-porous, such as a piece of aluminum film, the decorative element is simply coated with the resin. If necessary, the adhesion can be improved by a surface treatment such as, for example, anodization on an aluminum film or a primer on a steel. In addition, on any metallic element of reinforcement or decoration, the final result can be improved by bringing a film of resin deposited by brush, spray, coating, bath or any other suitable technique.

  Naturally one can use several decorative elements of the same nature or of different nature on the same ski face.

  For the implementation of the method, the decorative element is deposited manually or with the aid of a temporary support on the outer layer or the reinforcement, or by mechanical means.

  FIG. 3 thus shows the element 19 which has been deposited on the reinforcement layer 14 in the shell 20 of the mold, before introduction of the outer layer 15 and the closing wall 21 of the mold.

  Upon closure of the mold the decorative element is compressed with the rest of the stack to be included in the resin of the reinforcing layer with which it is in contact. To illustrate this, FIG. 4 shows the ski of FIG. 3 after assembly, with the decorative elements inlaid respectively in layers 12 and 14.

  For a decoration of the lower face of the ski, the decorative element would be deposited directly on the outer layer which forms the sole or between two reinforcements if necessary.

  The decoration of the ski thus produced has a unique appearance with a certain randomness. Its implementation is very simple and can be easily integrated into the current stages of the manufacture of a ski. It can be modified at any time without calling into question the ski manufacturing process.

  Naturally, the present description is given only as an indication and other embodiments of the invention could be adopted without departing from the scope thereof.

  In particular, it is possible to provide additional glue films in the structure of the ski. Also the invention is not limited to the field of skiing, it can be applied also to the field of snow surfing and more generally to any board gliding or rolling having a composite structure with or without a central core.

Claims (10)

  1- Method of decorating a board for gliding or rolling composite material, the board comprising a superposition of layers assembled by pressing, and to at least one of its outer faces at least one reinforcement (11, 12, 13, 14 ) coated with a polymerizable resin matrix covered with a transparent covering layer (8, 15), characterized in that during the production cycle a physical decorative element (18, 19) is applied against the reinforcement resin coating in the unpolymerized state, said physical element (18, 19) covering only a part of the surface of the board, such that the physical decorative element is embedded in the resin of the reinforcement during pressing layer layering.   2- Method according to claim 1, characterized in that the physical decoration element (18, 19) is deposited on a transparent outer layer (8).   3- A method according to claim 1, characterized in that the physical decorating element (18, 19) is deposited on a reinforcing layer (14).   4. Process according to claim 1, characterized in that one chooses the physical element of decoration among the group comprising a dried element of nature, a fabric, lace, paper, aluminum film.   5- sliding or rolling board having a composite structure having to at least one of its external face at least one reinforcement (11, 12, 13, 14) embedded in a polymerizable resin matrix covered with a transparent covering layer ( 8, 14), characterized in that at least one physical decorative element (18, 19) covering only a part of the surface of the board is embedded in the resin of a reinforcement (11, 12, 13, 14 ).   6 - Board according to claim 5, characterized in that the physical element of decoration (18, 19) covers at least one face of the board between 5 and 85% of its surface.   7- Board according to claim 5, characterized in that the physical element of decoration (18, 19) is selected from the group comprising a dried element of nature, a fabric, lace, paper, aluminum in film.   8- Board according to claim 5, characterized in that the physical element of decoration (18, 19) is disposed between a reinforcement (12, 14) and a transparent outer layer (8, 15).   9- Board according to claim 5, characterized in that the physical element of decoration (18, 19) is disposed between two adjacent reinforcing layers (11-12, 13-14).   10- Board according to claim 5 comprising a central core, characterized in that the face of the core facing the physical element of decoration (18, 19) carries locally at least one marking or a visible decoration by transparency.