SI22529A - Ski or snowboard as well as procedure for its manufacture - Google Patents

Abstract

The ski (1) or corresponding snowboard according to the invention is designed in such a way that it features a simple construction and is suitable for low-cost mass production while its physical and strength features at least approximately meet those of standard skis (1) or snowboards featuring a much more demanding concept. Apart from that the specified concept of ski (1) or snowboard thanks exclusively to the low-cost and simple measures provides the user with a commercially acceptable and attractive look of the ski (1) or snowboard. Subject of the invention is also the procedure of manufacturing such a ski (1) or snowboard which meets all the aforementioned criteria and additionally enables a simple recycling of damaged or worn skis (1). The ski according to the invention with the exception of the edges (15', 15'') integrated into it during its manufacture consists completely from thermoplastic polymer material, its basic thickness (t), meaning the distance between the sliding surface (14) and the upper surface (17) remain practically unchanged along the complete active length of the ski (1) or snowboard from the area in front (12) to the rear area (13) or vice-versa. Apart from this on its upper surface (16) the ski (1) or snowboard features at least two protuberances (17', 17''), which are mutually displaced and at least essentially running along the longitudinal direction of the ski (1) or snowboard, which remain in the central area (11) of the ski (1) or snowboard adapted for accepting or attaching of parts (21, 22) of ski bindings (2). During the production of such a ski (1) or snowboard in the area of engraving (33) with the tool (3) for the processing of thermoplastic polymer materials the edges (15', 15'') are inserted where they are held and then doused with plastified polymer material supplied into the engraving (33) for forming the ski (1) or snowboard, while after the solidification of the specified material the resulting ski (1) or snowboard in this following finalisation step directly after the removal from the engraving (33) tool (3) is subjected to coercive position of the required bending radius.

Description

A 63 C 5/12

A ski or snowboard and the process of making it

The invention relates to a ski or snowboard as well as to the process of making it. Such inventions are, in the context of consumer goods, classified as sports equipment, namely skis and ski boards, and processes for the manufacture of such products.

The invention is based on the problem of how to design a ski or a ski. a snowboard that will be structurally simple and suitable for inexpensive large-scale production, and its physical and strength characteristics should at least roughly correspond to those of conventional, much more complex skis or. snowboards, and at the same time, thanks to purely cheap and simple measures, this design is again intended to provide a commercially acceptable and attractive ski or ski appearance. snowboards, with the problem being reasonably related to the process of skiing or skiing. snowboards that would meet all of the above requirements and, in addition, make it easy to recycle damaged or worn out skis or for other reasons. snowboards.

The state of the art in the field of skiing comprises, on the one hand, the various designs of the skis and also the various processes of ski manufacture. The simplest embodiments of the skis are elongated plate beams with a curved front side, so-called tip, away from the base, and with a properly thickened central area intended to attach the ski link.

Thus, skis that were made entirely of wood were initially known, which is neither very simple nor cheap. With the availability of other materials, skis of light metal or their alloys, of fiber-reinforced synthetic resins and those made entirely of thermoplastic plastics, were then developed. However, in the past, it has always been shown that none of these skis fully meet the desired requirements for physical and strength properties. In this respect, it is necessary to emphasize the necessary toughness, flexibility, flexural and torsional rigidity, the possibility of mounting curbs and other mechanical connecting elements, the weight of the ski itself and, last but not least, the manufacturing technology itself. For these reasons, skis in recent years have been mainly made by either inserting the core and sliding lining together with curbs, if necessary, with various reinforcement additives into a suitable mold, where said components are poured and thereby interconnected with polyurethane foam, or alternatively by assembling said core. with sliding lining and curbs together with various layers, including the top lining and the side lining and various reinforcing elements, based on the interconnection of said components into a non-separable assembly, e.g. through gluing or similar process steps. This type of construction design allows, among other things, the achievement of a very wide range of physical and strength properties of the skis, due to the numerous costs involved in the preparation, assembly and assembly of these skis, which entails considerable costs. These are acceptable for a certain proportion of more demanding users, while the remaining ones, from the point of view of the less demanding users, often have the need for the availability of a ski, whose physical and strength characteristics should at least roughly correspond to the ski described above, while at the same time the price is significantly lower thanks to significantly lower manufacturing costs.

Such user desires have been tried in the past with various designs of skis, which could be quickly and easily manufactured on the basis of injection molding of thermoplastic plastics into suitable tools to avoid the time-consuming preparation and assembly of many components. The dashing idea sounds simple, in practice this way of making skis is associated with many problems.

Thus, in DE 2 136 363, it is proposed to carry out the ski according to a procedure in which a core is fitted in the appropriate tool and optionally other reinforcing elements, and then a thermoplastic plastic is heated into the tool at the flow temperature, the core being composed of e.g. made of polystyrene or polyolefin. For this purpose it is again necessary to prepare the aforementioned components in a reliable manner and to place them in the tool, because otherwise the movement or adhesion of the plastic could cause displacements and thus ejection. The process was basically designed to look for an alternative to a previously used wood or polyurethane core, so it is nevertheless relatively complex and also expensive.

In contrast, attempts are made to manufacture especially shorter children's skis by direct injection of thermoplastic mass into a mold whose inner surface corresponds to the outer surface of the ski as a final product. Such a procedure is really simple, but the products thus obtained, as a rule, do not meet even the minimum requirements. The reason for this is, on the one hand, the deformations that occur during cooling in the tool itself and even later when using the ski itself. It is also completely unpredictable that the ski is contracted, which means that, from the side, instead of a mild and to a certain extent a convex central area of the relaxed ski, this area is more pronounced in some products, less pronounced and often even concave in others. On top of this, these skis are usually made without metal curbs, which means that they are suitable only for walking in the snow and one for descending, as they practically do not provide any maneuverability.

Taking into account the requirements for flexural stiffness, the skis known so far have generally insisted on such a structural design of the ski, which is otherwise common in a composite ski and in which the thickness of the ski varies in length, which means that the thickness is greatest in the central region of the ski, towards the tip or . and the tail gradually shrinks. Due to the concentration of the melt in the central area, the skiing process is relatively slow to produce, because of the relatively heavy weight of the ski, so the machining cycles consisting of at least the steps of closing the tool, injecting thermoplastics, cooling, ejecting the product, closing the tool are extremely long. At the same time, due to the different temperature gradients in individual areas, this kind of thick-walled products produces additional and relatively difficult to predict deformations of the products, which affects the physical properties of the product and in particular its aesthetic appearance.

They tried to avoid this by (DE-OS 2 123 339) injecting polystyrene together with a polycarbonate resin into the tool, which then coated a plasticized polystyrene core before curing and even after cooling in the final product. In order to maintain the desired ratio between the core and the envelope, in particular during the advancement of the plasticized material along the cavity or. the engraving of the tool must be carefully controlled. However, the thickness of the envelope in different parts of the ski can be very different, which of course directly affects the mechanical properties and aesthetic appearance, and in particular the possibility of damage and damage to the product later in use. On top of all that, considering the sophisticated technology and the possibility of ejection, skiing in this way cannot be very cheap.

The variable thickness of the ski in the longitudinal direction can be avoided by deformations due to excessive wall thicknesses and, to a certain extent, by making a cavity in the ski in the central area, which also helps to reduce the weight of the ski and consequently the material consumption. Such a measure is suggested e.g. in EP 1 559 452 Al. For this purpose, an appropriate amount of material is injected into the engraving of the tool, namely a properly heated and therefore plasticized thermoplastic mass, into which air is then sucked in, which, on the one hand, leads to the tearing away of the material against the walls and, on the other, to the formation of a centrally distributed air bubble. cavities in the central area of the engraving. Seen in longitudinal cross-section, this gives at least a very advantageous structural design of the ski, which comprises two vertically spaced carrier layers, each of which has an airbag trapped. Taking into account the real situation, the situation is different. In the process mentioned, it is extremely difficult to provide at least approximately even walls, since the thickness of the wall depends on many factors. In addition, extremely critical areas are present in the region of glassing of said layers near the tail and the tip of the ski, where there is a jump transition from two layers to a single layer of significantly greater thickness. Due to the fact that during the bending of the ski, each of the aforementioned sites is exposed to the bending and shear stress, and, in the case of the pressure in the cavity of the trapped air, any significant deviation of the wall thickness can be quickly reflected in the mechanical damage of the ski during only regular use. -te. On this basis, therefore, it would be difficult to argue that the mechanical properties of such a ski are at least approximately equivalent to those of classic skis. In addition, no sliding surface is detected in the EP 1 559 452A1 ski, which affects its maneuverability.

The invention relates to a ski or a ski. a snowboard comprising a central area adapted for mounting parts of the ski link as well as a curved front area or sideways sideways use in use. tip and posterior area or. rep. This is the type of ski or ski. the snowboard is equipped with a sliding surface when used against the ground facing the side, which is surrounded by a sense along the entire active length of the ski or ski. snowboards i.e. between the front area and the rear area, the curbs run, while the upper surface of the ski or the ski runs opposite the sliding surface. snowboards in the central area adapted to accommodate parts of the ski link.

According to the invention, for a ski or a ski. snowboard characterized by the fact that, except for it, during the construction of the integrated edges, it consists entirely of thermoplastic polymer material and gives its basic thickness, namely the distance between the sliding surface and the upper surface, along the entire active length of the ski or the ski. snowboards all the way from the front area to the back area, or vice versa, virtually unchanged at the same time as skiing or skiing. the snowboard on its upper surface comprises at least two spaced apart and at least substantially extending projections in the longitudinal direction of the ski, which are in the central region of the ski or the ski. snowboards adapted to receive or. mounting parts of the ski link.

The arrangement of said protrusions is selected symmetrically with respect to the central longitudinal axis of the ski or. snowboards, but at the same time the preferred ski or snowboard design. According to the invention, the snowboard cross section of each projection is greatest in the central region of the ski or ski. snowboards and gradually decreases in the direction towards the front area as well as towards the rear area of the ski or ski. snowboards.

For other possible designs of the ski or. According to the invention, the number of said protrusions may in any case exceed two, with the upper surface of the ski or the ski. snowboards may provide at least one additional projection, which is inclined obliquely from said substantially longitudinal projections.

In the area of said projections, a suitable number of nests may be provided each time for fixing the parts of the ski link, each blanket having a blind hole surrounded by a wall.

In the further development of the ski or. Snowboards according to the invention are two longitudinal projections at least in the central region of the ski or the ski. the snowboards are parallel to each other and each is provided with its own guide, which is provided with gripping elements and adapted to receive with the complementary guide and the complementary lifting elements of the equipped ski link parts, such that said parts of the link are along said ski guides. snowboards movable in the longitudinal direction of the ski or. snowboards and, thanks to the clamping elements, make them firmly in the ski or ski position. snowboards.

Other than that ski or. The snowboard of the invention preferably comprises, on its upper surface in the area outside the projections, suitable decorative means which may be e.g. printed and / or pasted.

The subject of the invention is also a method of making a ski or a ski. a snowboard that meets the aforementioned characteristics, whereby in each area the desired shape of the ski or the ski. snowboards of the engraving of a tool consisting of at least two, either in close contact with one another or on a suitable spacing of the movable parts and which is suitable for processing thermoplastic polymer materials in a plasticized state, inserts the edges and is initially held there in the selected position by suitable After the tool parts are moved into tight mutual contact, they are filled with plasticized plastic material for engraving. snowboards. The aforementioned material then, in the said engraving, receives a custom-made engraving shape after the transition from plasticized to solid aggregate state.

After the material has been cured and the parts of the tool have been opened, the ski or the ski is thus formed. the snowboard with the edges integrated in it is removed from the engraving of the tool, and then the resulting ski or ski. the snowboard in this next step of finalization, immediately after removal from the engraving of the tool, forcibly holds the position of the desired conciseness, namely, the convex curvature of the central region of the ski or. snowboards in the direction from the sliding surface to the upper surface of the ski or. snowboards. This retention in the locked state lasts at least essentially for the ski to cool down. snowboards along the entire spectrum of transverse and longitudinal sections to a temperature at least approximately equivalent to room temperature.

The aforementioned step of finalizing the ski after cooling the ski or snowboards, when forced to remain in the locked state, at least include grinding of the side or. vertical edges of surfaces and grinding of the sliding surface, including grinding of the bottom or horizontal surfaces of the edges, and in addition to the above, the decoration of the upper surface by placing self-adhesive decorative agents and / or printing is preferred.

The invention will now be explained in greater detail on the basis of some examples of ski construction, which in a reasonable and understandable manner are undoubtedly feasible even in the case of a snowboard, in conjunction with the accompanying sketch showing

FIG. 1 FIG. 2 FIG. 3 FIG. 4 Fig. 5 FIG. 6 Fig. 7 Fig. 8 Fig. 9 Fig. 10 FIG. 11 Fig. 12 Fig. 13 Fig. 14 Fig. 15 Fig. 16 Fig. 17 Fig. 18

FIG. 19 Fig. 20 FIG. 21 Fig. 22 is a first embodiment of a ski according to the invention in perspective;

according to FIG. 1 in bottom view;

according to FIG. 1 in the outline;

according to FIG. 1 in top view;

according to FIG. 1 to 4 in explosion view;

according to FIG. 1 to 4, again in plan and marked cross-sections; according to FIG. 1 to 4 in longitudinal section in plane VII-VII of FIG. 6; according to FIG. 1 to 4 in cross-section in plane VIII-VIII of FIG. 6; according to FIG. 1 to 4 in cross-section in the plane ΙΧ-ΙΧ according to FIG. 6; according to FIG. 1 to 4 in cross-section in the plane Χ-Χ according to FIG. 6; a further embodiment of the ski according to the invention in perspective; according to FIG. 11 in floor plan;

according to FIG. 11 in cross-section in plane ΧΙΙΙ-ΧΙΙΙ according to FIG. 12;

a still further embodiment of the ski according to the invention in perspective;

according to FIG. 14 in floor plan;

according to FIG. 14 in longitudinal section in plane XVI-XVI according to FIG. 15;

according to FIG. 14 in longitudinal section in plane XVII-XVII of FIG. 15;

an embodiment of a ski according to the invention, provided with perspective elements for receiving the ski link;

according to FIG. 18 in floor plan;

according to FIG. 18 is a longitudinal cross-section in the plane ΧΧ-ΧΧ of FIG. 19;

detail A according to FIG. 19;

according to FIG. 18 is a longitudinal cross-section in the plane ΧΧΙΙ-ΧΧΙΙ of FIG. 19;

FIG. 23 is a ski according to FIG. 18 - 22 with integrated ski circuit;

FIG. 24 is a ski according to FIG. 18 - 22 during the installation phase of the ski link;

FIG. 27 is a ski according to FIG. 18 to 22 are sections in the plane XXV-XXV of FIG. 23;

FIG. 26 is a tool that allows the skiing process of the invention to be carried out;

FIG. 27 is a detail B in FIG. 26;

FIG. 28 shows one of the tool versions of FIG. 26;

FIG. 29 is a detail C in FIG. 28;

FIG. 30 is a further embodiment of the tool according to FIG. 26;

FIG. 31 detail D according to FIG. 29;

FIG. 32 is a perspective view of a ski according to the invention at a further stage of manufacture, namely during bending;

FIG. 33 is a ski according to FIG. 32, this time in the outline;

FIG. 34 is a perspective view of a ski according to the invention at a further stage of manufacture, namely, during sanding of curbs;

FIG. 35 is a ski according to FIG. 34, this time in the outline;

FIG. 36 also a ski according to FIG. 34, this time in floor plan;

FIG. 37 is a perspective view of a ski according to the invention at a further stage of manufacture, namely, during sanding of the sliding surface;

FIG. 38 and the ski according to FIG. 37, this time in the outline.

Ski 1 oz. meaningfully, the snowboard of the invention is essentially similar to other modern skis and in principle comprises a central area 11 which is provided for receiving and securing a ski link 2, with a curved front area 12 or 12 from the base. tip and posterior area 13 oz. the tail, which is also optionally at least slightly curved in the direction away from the base. It should be noted that ski 1 in FIG. 1 to 20 are illustrated in the semi-finished phase, while the ski 1 is, as a final product, in the central region 11, which is generally narrower than the rear region 13 and, in particular, of the generally widest front region 12, optionally more or less sideways away from the base .

The ski 1 is further provided with a sliding surface 14 on the facing side, which is bounded along the sides by ski runs 1 'practically along its entire length 15', 15. When the ski 1 is positioned on a flat surface as a finished product in a relaxed state , due to its location in the central region 12, only the front region 12 and the posterior region 13 are in contact with the substrate, while the central region 11 is located at the desired distance from the substrate. Only in the laden state of the ski 1, due to the bending deformation of the ski 1 due to the weight of the ski, contact is made with the base even in the central region 11 of the ski 1, which means that virtually the entire length of both edges 15 ', 15, respectively. in each turn the inner curb 15 'or. 15.

The ski 1 according to the invention consists of a homogeneous thermoplastic material in which curbs 15 ', 15 are already incorporated during the construction of ski 1, the thickness t of ski 1 being along the entire length of ski 1, namely in the central region 11 as well as in the front region 12 and the rear region 13 at least substantially invariable, but at the same time at the upper, from the base or. the sliding surfaces 14 in the side facing surface 16 of the ski 1 are provided with at least two spaced apart and at least substantially longitudinally preferably ribbed projections 17 ', 17 which are made simultaneously and of the same material as the ski 1 itself, with the exception of said curbs 15', 15.

In the embodiment of ski 1 according to FIG. 1 through 10, two projections 17 ', 17 are provided on the upper surface 16 of ski 1, which extend substantially along the entire active length of ski 1, namely along the entire active length of the curbs 15', 15. The cross section of each of the projections 17 ', 17, determined by the measurements of the respective projections in the transverse horizontal direction, i parallel to the sliding surface 14 and the upper surface 16, and in the vertical direction, namely in a direction perpendicular to the sliding surface 14 and the upper surface 16, should be larger in the central region 11 of the ski 1, in the direction of the front region 12 and towards the rear region 13 of the ski 1, however, is gradually decreasing. Furthermore, in the embodiment in question, in the area of said projections 17 ', 17, a suitable number of nests 18 are arranged in each case for fixing parts 20, 21 of the ski link 2 to the ski 1, wherein each nest 18 preferably comprises a blind hole 18', which is surrounded with a thick wall 18 and adapted for direct screwing in the sketch of the unscrewed self-tapping screws (Fig. 9), thereby securing parts 21,22 of the ski link 2 to the ski 1.

Such a design of ski 1, whose thickness / is practically the same length and over most of the upper surface 16, and for which at least two longitudinal projections 17 ', 17 of variable cross-section are available on the upper surface 16, provides perfectly acceptable predispositions for ski construction. 1 by the injection molding process of thermoplastic polymeric materials, while also achieving the physical characteristics of ski 1, which are at least approximately comparable to those of conventionally manufactured skis. Along the length of ski 1, at least a substantially constant thickness t, during the manufacturing process itself, ensures the controlled progression of the plasticized polymer material through the recess or the groove. engravings 33 of tool 3 (Fig. 26), thus avoiding any inhomogeneous structure while ensuring relatively uniform cooling, while also anticipating shrinkage and preventing excessive product deformation during cooling as well as later due to the release of residual internal stresses.

In a further embodiment of the ski 1 according to the invention (Figs. 11 to 13), several projections 17 ', 17 are provided on the upper surface 16 of the ski 1, specifically, at a distance from the central longitudinal projection 17' and at a mutual distance on each side of the ski 1. two more protrusions 17, in which case the nests may also be provided for fastening the ties, which are not shown separately in the sketch.

In a further embodiment of the ski according to the invention (Figs. 14 to 17), longitudinal projections 17 ', 17 are provided on the upper surface 16 of the ski 1, between which additional projections 17' are provided in the front area 12 and the rear area 13 of the ski 1. obliquely with respect to said longitudinal projections 17 ', 17. If said longitudinal projections 17', 17 substantially provide the necessary flexural rigidity of the ski 1, said oblique additional projections may be provided e.g. mainly to increase the torsional rigidity of ski 1 and / or to further increase flexural rigidity.

In the embodiment of the ski according to FIG. 18 to 25, the longitudinal projections 17 ', 17 on the upper surface of the ski 1 are adapted to receive both parts 21, 22 of the ski link 2 without screwing and with the possibility of quick and easy positioning and consolidation in each position selected. This allows the ski link 2 to be fitted to the ski 1 without screws being screwed into the slots 18 or 18. event. other measures, except that due to the possibility of changing the position of each of the two parts 21, 22 of the ski link 2, the ski 1 can be adapted quickly and easily to the respective requirements or. each ski boot available to each user. However, in this case, the projections 17 ', 17 on the upper surface 16 of the ski 1 must be mentioned at least in the central region 11 of the ski 1 or. at the point of attachment of the ski link 2 parallel to each other, at the same time there must be at each of them a suitable guide 19, which allows the movement of the respective with the complementary guide 210, 220 of the executed part 21, 22 of the ski link 2 in the longitudinal direction of the ski 1 and which at the same time after attaching each part 21, 22 of the link 2 to the ski 1, it then prevents any movement of the respective part 21, 22 of the link 2 in a direction perpendicular to the upper surface 16 of the ski, namely in the direction to the side of said surface 16. They must be further reinforced by the respective part 21, 22 ski ties 2 in each position selected at each of said guides 19 are provided with suitable clamping elements 19 ', which are optionally available as teeth and adapted for form-locking with the complementary clamping elements 210', 220 'of each part 21 , 22 ski ties 2. It will be appreciated by the person skilled in the art that each longitudinal projection 17, 17 is equipped with a guide 19 and a strainer. l elements 19 ' derived from the same material and at the same time i.e. in the same process as the rest of ski 1 except the curbs 15 ', 15, which preferably consist of metallic material.

1 oz ski. It is also possible, in principle, to make the snowboard according to the invention in an extremely simple manner by the injection molding process suitable for this purpose and at the temperature of the plasticization or. leakage of heated thermoplastic polymer material based on either unused industrially produced granulate or granulate obtained by grinding damaged or worn skis according to the invention after removal or removal. elimination of curbs 15 ', 15.

To this end, at least two parts 31, 32 of the tool consisting of 3, in which, in addition to the guides 35 and the inlet 36 for the inlet of the plasticized polymer material, an appropriately shaped and machined engraving 33, whose inlet 37 is available, is prepared prior to carrying out the process of the invention. hydraulically coupled to the aforementioned opening 34. The shape of said engraving 33, available either in only one part 31 or in both parts 31, 32 of tool 3, substantially corresponds to the shape of the ski 1 as a semi-finished product immediately prior to finalization. Tool 3 is further provided with holding means 38 adapted to cooperate with curbs 15 ', 15 when these are inserted in engraving 33 of tool 3 before injection of the plasticized polymer material. Said holding elements 38 are available either as mechanical (Figs. 28 and 29) or magnetic (Figs. 30 and 31), the latter being mounted in tool 3 near the position of the respective curb 15 ', 15 in tool 3, respectively. while the holding means 38 in the mechanical version in tool 3 are mounted in such a way that after inserting the curbs 15 ', 15 in the engraving 33 and closing the tool 3 in the position of mutual contact of the parts 31, 32 of the tool 3, the respective holding means 38 also rests directly on at least part of the curb 15 ', 15 and the latter pressure against the associated engraving surface 33.

The process of making a ski or ski. According to the invention, the snowboards according to the aforementioned characteristics roughly comprise two phases, viz.

- designing a ski 1 by injecting plasticized polymer material into a suitable tool 3 and

- fmalizing the ski 1 thus obtained, comprising the step of bending or. of skiing 1 immediately after leaving the tool 3 and subsequently grinding the vertical surfaces of the curbs 15 ', 15 and the sliding surface 14 including the grinding of the horizontal surfaces of said curbs 15', 15, and optionally decorating the upper surface 16 of the ski 1 or e.g. by printing and / or installing self-adhesive decorative elements 90; 91, 92, 93.

In the first stage, the tool 3, when installed in the usual manner and attached to a conventional device for processing plasticized thermoplastic materials of adequate capacity, is closed after the insertion of the curbs 15 ', 15 in the engraving 33 into a position of close contact between the two parts 31, 32 of the tool (Fig. 28), after which an adequate amount of plasticized polymers is injected through the inlet 36 into the engraving 33, which is essentially unobstructed along the ski 1, thanks to the ski 1, essentially unchanging thickness t of the ski 1 and the engraving 33. advances towards the anterior region of the engraving 33 corresponding to the anterior region 12 of ski 1 and the posterior region of an engraving 33 corresponding to the posterior region 13 of ski 1. In this case, the polymeric material encloses or engulfs the regions of both edges 15 ', 15 within the engraving. shaped longitudinal projections 17 ', 17 of ski 1 including possibly present guides 19 and pole flow members 19' The material does not have a significant effect, which could be reflected in different circumstances eg. in sudden changes in pressure or congestion and thus different flow rates in individual areas, or in the premature cooling and melting of plasticized material in individual areas or other undesirable effects in this step. When the engraving 33 is evenly and completely filled with polymeric material, the material is cooled and its aggregate state changes from liquid to liquid. plasticized into a solid. Thereafter, both parts 31, 32 of tool 3 are opened and the ski 1 in the semi-finished phase is removed from engraving 33. After inserting the curbs 15 ', 15 into engraving 33, the step is repeated cyclically.

On the other hand, the ski 1 undergoes a finalization phase immediately after removal from the engraving 33 of the tool, whereby by bending, the desired contraction or flexion is achieved. the convexity of the sliding surface 14, such that the ski in the central region 11 bends in the direction from the sliding surface to the upper surface 16. Leaving the ski 1 in such a condition at least until it is finally cooled over the entire cross-section and longitudinal section, at thus, its shape and structure of the thermoplastic material are finally being formed along the entire spectrum of transverse and longitudinal sections. Since the said step is performed immediately after the formation of the ski 1 as a semi-finished product, ie at a stage when the material of the ski 1 is fairly plastic and at least a certain proportion of the molecules of the polymeric material is still in the final stage of the final formation. The final formation of the shape of the ski 1 is thus carried out in its resolved position, thus forming its final shape during cooling to room temperature, while relaxing the material in terms of releasing internal stresses which are practically inevitable when cooling such products. This step is illustrated in FIG. 32 and 33.

Further, the step in the said finalization phase also comprises grinding of the lateral or. the vertical surfaces of curbs 15 ', 15 and / or ski 1 and grinding of the sliding surface 14 of ski 1 including grinding of the lower or the horizontal surfaces of the curbs 15 ', 15, the aforementioned steps being known from the manufacturing processes of conventional skis 1 and can also be carried out with the aid of already available abrasives 4 and transport means 5 and / or support means 6.

In the process of manufacturing the skis according to the invention, it is also possible to use material obtained from the recycling of used or damaged skis, which represents not only the possibility of further reducing the already significantly lower cost of ski production, but also an important contribution to the protection of the environment.

The ski (1) thus obtained. The snowboard is also reasonably finalized and ready for use with the carefully described quick and easy steps described above. sale. It will be appreciated by those skilled in the art that dyes and other additives can be used in the processing of thermoplastic materials, which help to achieve the desired visual effects of the product, while engraving of tool 33 can be prepared in advance to achieve the desired surface effects. . in addition, there is also the possibility that the upper surface 16 of the ski 1, especially in the areas between the longitudinal projections 17 ', 17, of the press, or in particular, be equipped with labels 9 or similar, preferably self-adhesive, inexpensive decorative means 91, 92, 93, which they can be produced in a variety of ways, thanks to appropriate graphic support, including the possibility of ad hoc personalization or similar commercially attractive measures.

Claims (15)

A ski or snowboard comprising, for mounting parts (21, 22) of the ski link (2), an adapted central area (11) and a curved front area (12) or sideways, when used in a direction away from the base. the tip as well as the rear area (13) or. the tail being the ski (1) or. The snowboard is equipped with a sliding surface (14), which is surrounded by a sense along the entire active length of the ski (1) and / or on the facing side. snowboards between the front area (12) and the rear area (13) running edges (15 ¹ , 15), while the upper surface (16) of the ski (1) or the ski (1) is opposite from the sliding surface (14). snowboards in the central region (11) of the ski (1) adapted to receive parts (21, 22) of the ski link (2), characterized in that, with the exception of them, during the construction of the integrated curbs (15 ', 15), from thermoplastic polymer material, that its basic thickness (t), namely the distance between the sliding surface (14) and the upper surface (17), over the entire active length of the ski (1) or. snowboards from the front area (12) to the rear area (13), or vice versa, virtually unchanged, with the ski (1) or the snowboard on its upper surface (16) comprises at least two spaced apart and at least substantially in the longitudinal direction of the ski (1) or. snowboards are ongoing protrusions (17 ', 17') which are in the central region (11) of the ski (1) or. snowboards adapted to receive or. mounting of ski link (21, 22) parts (2). A ski or snowboard according to claim 1, characterized in that the arrangement of said projections (17 ', 17) is selected symmetrically with respect to the central longitudinal axis of the ski (1) or. snowboards. A ski or snowboard according to claim 2, characterized in that the cross-section of each projection (17 ', 17') is largest in the central region (11) of the ski (1) or. snowboards and gradually decreases both towards the front area (12) and towards the rear area (13) of the ski (1) or. snowboards. A ski or snowboard according to one of claims 1 to 3, characterized in that the number of protrusions (17 ', 17) exceeds two. A ski or snowboard according to any one of claims 1 to 4, characterized in that on the upper surface (16) of the ski (1) or. the snowboards are provided with at least one additional protrusion (18) extending obliquely relative to said substantially longitudinal protrusions (17 ', 17). A ski or snowboard according to any one of claims 1 to 5, characterized in that a suitable number of nests (18) are provided in each area of said projections for fastening parts (21, 22) of the ski link (2), wherein each nest (18) is enclosed by a corresponding wall (18). blind hole (18 '). A ski or snowboard according to one of claims 1 to 5, characterized in that the two longitudinal projections (17, 17 ') are at least in the central region (11) of the ski (1) or. snowboards parallel to each other and each provided with a guide (19) provided with gripping elements (19 ') and adapted for receiving with a complementary guide (210,220) and complementary gripping elements (210', 220 ') fitted parts (21, 22) the ski ties (2) such that said parts (21, 22) of the ties (2) according to said guides (19) of the ski (1) or. snowboards movable in the longitudinal direction of the ski (1) or. snowboards and, thanks to the clamping elements (19 '), can be consolidated in the respective ski position (1) or. snowboards. A ski or snowboard according to any one of claims 1 to 7, characterized in that it comprises decorative means (9; 91, 92, 93) on its upper surface (16) in the area outside the projections (17 ', 17), which are glued to said surface (16). Ski according to any one of claims 1 - 7, characterized in that the upper surface (16) in the area outside the projections (17 ', 17) comprises decorative means (9; 91, 92, 93) printed on said surface (16). 10. A method of manufacturing a ski or snowboard according to any one of the preceding claims, characterized in that the ski shape (1) or the ski shape (1) in question is in each case desired. snowboards made of engraving (33) of at least two of them, either in close contact with one another or on a suitable spacing of the movable parts (31, 32) of the stand-alone tool (3) for the processing of thermoplastic polymeric materials in the plasticized state, insert the curb (15 ', 15) first hold them there in the selected position by means of suitable holding means (38), and then, after moving the parts (31, 32) of the tool (3), seal them in close mutual contact with plasticized polymeric forming material supplied into the engraving (33). ski (1) or. snowboards which, in the said engraving (33), after the transition from plasticized to solid aggregate state, receive the shape of a ski (1) or. snowboards adapted to the shape of the engraving (33), then after the parts (31, 32) of the tool (3) are formed, the ski (1) or the ski is thus formed. the snowboard with its integrated edges (15 ', 15) is removed from the engraving (33) of the tool (1), and then the resulting ski (1) or In this next step of fmalization, the snowboard is exposed, after removal from the engraving (33) of the tool (3), to a forced hold in the position of the desired conciseness, namely, the convex curvature of the central region (11) of the ski (1) or. snowboards in the direction from the sliding surface (14) to the upper surface (16) of the ski (1) or. snowboards, suitable for cooling the ski (1) or. snowboards along the entire spectrum of transverse and longitudinal sections to a temperature at least approximately equivalent to room temperature. Method according to claim 10, characterized in that the step of fmalizing the ski (1) or. snowboards after cooling down the ski (1) or. snowboards during forced holding in the locked state shall at least include grinding of the side or. the vertical surfaces of the edges (15 ', 15) and the grinding of the sliding surface (14), including grinding of the lower or horizontal surfaces of the edges (15 ', 15). A method according to claim 11, characterized in that after the step of fmalization by decorating and grinding the edges (15 ', 15) and the sliding surface (14), the upper surface (16) is further decorated. Method according to claim 12, characterized in that the decoration of the upper surface (16) of the ski (1) or. Snow boards are made by installing self-adhesive decorative materials (9; 91,92,93). A method according to claim 12, characterized in that the upper surface (16) of the ski (1) or. makes snowboards printable. A method according to claim 12, characterized in that the upper surface (16) of the ski (1) or. Snowboards are made by printing and installing self-adhesive decorative materials (9; 91, 92, 93).