EP1530538B1 - Surfing device - Google Patents

Description

The invention relates to a device for surfing or the like, in particular a surfboard, with a laminate-coated foam core and a top and bottom having board-like body.

Typically, surfacing devices with a board-like body, so-called surfboards, comprise a laminate-coated foam core having top and bottom surfaces. If the resin of the laminations consists of a polyester, then the foam cores have a lath-shaped device, usually made of wood, the so-called "stringer" for stabilizing the surfboard.

The disadvantage here, however, is the fact that such surfboards are usually subject to high wear, which manifests itself in irreversible surface irregularities to fractures of the boards.

Furthermore, surfboards are known, the laminate layers usually contain fiberglass fabric and epoxy resin, but these can only be produced in prefabricated forms, without going into the needs of the individual surfer. These surfboards usually have no stringer, as can be accomplished by the epoxy resin in conjunction with commonly used glass fiber fabrics sufficient strength.

US 5,514,017 In particular, a surfboard substantially constituted by a core constituting a honeycomb-shaped structure with tensile-strength fibers and a laminate coating surrounding the core discloses a surfboard considered as the closest prior art.

DE 41 28 957 A1 discloses a surfboard with a composite body formed by a lightweight body made of a foamed plastic, applied to the core surface hard support layer of a laminating resin or a plastic foam higher density with an embedded plastic in the plastic fabric and an outer skin of an impact resistant, UV Resistant plastic film is formed from a thermoplastic material, wherein the support layer of the board body in the standing area for the surfer contains over the width of the board body extending reinforcing insert through a core layer of a honeycomb material with two outer layers of a single or multi-layer synthetic fiber fabric is formed, this results in a very heavy surfboard sailboard.

CH 597 032 apparently a windsurfing board, comprising a laminate-coated foam core and a top and bottom having board-like body, wherein at least the edge region of the left and right side end of the board-like body has at least two fabric laminate layers, one of the bottom to the top to the profile of the corresponding End runs and thus arise in the side edges several cut laminate layers that abut each other, so that no protruding edges.

A disadvantage of this, however, is the fact that the joining of two moldings on the Foam core to a surfboard at the seam between the two halves traditionally a vulnerability to the effect occurs that at low surface damage in this area, the foam core can absorb up to about 10% water, which is very difficult to remove by the rapid distribution in the foam body itself This leads to long repair and service life and repairs are possible only to a very limited extent.

Problem of the present invention is to avoid, at least in part, the above-mentioned disadvantages, in particular to provide devices and methods for producing generic, in particular these devices for surfing with a board-like body, which have a much longer life compared to conventional surfboards, thus the Risk of board breakage is greatly reduced, with an individual adaptation to the individual surfer is possible.

This problem is solved by a device according to claim 1 and a method according to claim 21.

The inventive device for surfing or the like has a board-like body having a laminate-coated foam core and a top and bottom. At least the edge region of the front and / or rear longitudinal end and / or the left and / or right side end of the board-like body has - if appropriate in each case (ie if front and rear longitudinal end and / or right and left side end are concerned) - at least two layers of fabric laminate of which at least one extends from the top to the bottom or vice versa around the profile of the longitudinal end. Furthermore, it is according to the invention if in each case at least one fabric laminate layer of the top and bottom run around the profile of the front and / or rear longitudinal end and / or the left and / or right side end of the top to bottom or vice versa, as in this way a high breaking strength in both Elongationsrichtungen is accomplished.

Due to this special embodiment, the device according to the invention has, at least at one of its ends, a substantially increased elasticity compared to conventional surfboards. Due to the multiple - especially double - lamination, the edge regions, in particular the longitudinal ends and / or side ends are considerably more resistant, so that the areas of greatest loads now have a lower probability of breakage. With essential to the invention is the fact that the present devices for surfing in particular at their longitudinal ends and / or side ends have a larger compared to conventional surfboards reversible elongation about the longitudinal axis or transverse axis, so that bumps on the wave to be surfed quasi as a shock absorber be "cushioned". The devices according to the invention are thus faster and more controllable to surf and withstand even the strongest loads in the shaft with deformations up to 30 cm. Furthermore, the devices according to the invention adapt to the ever-changing waveforms of the waves with regard to their longitudinal and / or transverse profile. In addition, the weight is only half of conventional boards.

In order to promote a uniform elongation in both directions of elongation, it is advantageous if the respective at least one fabric laminate layers of the upper and underside in the edge region of the front and / or rear longitudinal end and / or the left and / or right side end directly to each other.

Moreover, it is advantageous if the ratio of total laminate layer thicknesses from top to bottom is in the range of 6: 4 to 5: 5, in particular if the total laminate layer thicknesses of the top and bottom are the same, since these embodiments achieve excellent service lives could, because both an up and a swinging of the longitudinal and / or side ends, at least in almost the same extent possible.

Furthermore, it is advantageous if the number of laminated fabric layers of the top and bottom are the same size, moreover, if the layer thicknesses of the individual fabric layers are at least almost identical and / or the fabric are chemically similar, so in this way also one allow high and controlled pivoting of the longitudinal and / or side ends.

This is realized in an advantageous manner reinforced to absorb the bending and tensile stresses occurring evenly, that at least one part in particular all fabric layers of the upper and lower sides in the edge region of at least one front and / or rear longitudinal end and / or left and / or right side end in their layer sequence alternately (alternating lamination of fabric layers of the top and bottom or vice versa) are arranged.

Here, it has proved to be extremely advantageous in practice, if the tissues consist of glass fibers and / or aramid.

Aramids are polyamides of aromatic diamines and aromatic dicarboxylic acids, which may also contain imide groups in addition to amide. Aramids are characterized by high thermal and chemical resistance, strength and elasticity as well as good flame resistance and dimensional stability.

In practice, advantageously have tissue area weights in the glass fibers in the amount of 80 g / m ² to 330 g / m ² and aramid in the amount of 60 g / m ² to 240 g / m ² and tissue, the at least one weave from the Group linen, twill 1/3, Twill 2/2, unidirectional correspond, proven. Fabrics, such as fiberglass and aramid fiber fabrics, are web-made webs of continuous yarns or twists, the yarns being usually spun with a slight twist (10 to 40 turns per meter), and twines usually being more twisted (100 to 200 turns per meter).

Frequently, an adhesive is applied to the fabric, which serves the better connection with in particular epoxy resins (epoxy resins). Such laminates show higher strengths and better water and aging resistance.

The weave is the type of thread binding in warp (longitudinal) and weft (cross) direction. The linen weave is a simple ground weave in which the weft crosses one warp thread at a time. It ensures good dimensional stability and low fraying when cutting. The Twill weave skips several warp threads, resulting in highly conformable and drapeable fabrics that are particularly well-suited to curved shapes but are less easy to cut.

Tissues are called unidirectional if these contain thin weft threads, so that more warp threads can be accommodated at the same resin content in the laminate. Because of the thread stretch is thus obtained in the longitudinal direction a significantly higher strength and rigidity.

Good results could be achieved with polyurethane or polystyrene foam cores.

So that when the laminate layer is broken when the foam core is exposed, it does not swell excessively on contact with water or absorbs water, and the latter has a closed cell structure, which is accomplished by modifying the foam by means of customary additives.

In particular, it has been proven that the fabric layers of the laminate are soaked in epoxy resin and / or beyond the device is stringer-free, as in this way a particularly high pivotability about the longitudinal and / or transverse axis (bendability) and thus at considerable Weight saving a very high stability is achieved.

Finally, it is advantageous if the inner surface of the foam core is substantially dust-free, since in the lamination of the first fabric layer on the foam core in this way an extremely intimate connection is made, otherwise with existing dust particles, the adhesion of the laminate on the foam core greatly reduced would and would often lead to delamination.

When using an above-mentioned epoxy resin (epoxy resin) in the laminate layer, the forces are absorbed directly from the glass fibers or aramid (for example in the form of fibers), so that usually deformations up to about 30 cm (!) Are possible. The material thickness of the top and bottom could be significantly reduced due to the above-mentioned, at least in the edge region performed multiple lamination. The weight of the device according to the invention could be significantly reduced compared to conventional boards, with stringerfreier execution even by half. The life of these devices should have been increased by about a factor of 4 compared to conventional boards. In the embodiment of the invention, the board-like body of the device according to the invention after appropriate use footprints of the surfer (footprints) on. This gives the surfer a better stand and better control over his board. The resulting prints range from 2 to 8 mm in depth and then stagnate without adversely affecting the quality of the board, providing optimum transfer of force from the foot to the board. As a rule, the footprints do not lead, as usual, to later delaminations of the laminate from the foam core.

According to the invention, it is basically sufficient if the overlap of the fabric laminate layers in the edge region of the board-like body extends in the circumferential direction only over part of the length of the body in this direction. For example, the overlap may be formed in a plurality of short, circumferentially successive and spaced-apart areas. In order to achieve the properties and advantages of the invention in a particularly extensive extent, provides an extraordinarily advantageous development of the teaching of the invention, that the overlap of the fabric laminate layers in the edge region of the board-like body in the circumferential direction of the body over a substantial part of the length of the body, preferably in extends substantially over the entire length of the body in this direction.

In order to achieve a resistance of the board-like body against UV radiation, it is expedient that the board-like body is provided in the region of its surface, in particular on its surface, with a UV-resistant material.

In the aforementioned embodiment, the UV-resistant material may be contained in the laminate or form a coating of the board-like body.

In the inventive method for producing a device for surfing and the like, in particular for kite surfing and wake boarding, in particular for producing a device according to the invention, at least one edge region of the front and / or rear longitudinal end and / or the left and / or right side end of the foam core of the board-like body from top to bottom or vice versa coated around the profile laminating with at least one fabric layer, wherein after complete lamination of at least the at least one fabric layer having edge region of the corresponding end has at least one further fabric laminate layer.

This can be done manually, semi or fully automatically in dedicated machines (commonly known vacuum technologies).

The statements made with regard to the device according to the invention with regard to the advantageous embodiments also apply analogously to the subclaims set out with regard to the method according to the invention.

In addition, it is advantageous if resin and / or light filler is applied to the surface of the foam core before lamination, so that the surface the foam core is almost sealed and a defined surface is provided for laminating the respective fabrics.

The device according to the invention is preferably a surfboard. However, the device according to the invention may also be, for example, a skim board, a wake board, a wake skate, a kite board, a knee board, a body board, a windsurf board, a water ski, a monoski or other similar sports equipment.

1. 1. Formgebung eines Schaumstoffkerns,
2. 2. Reinigen der Oberfläche des Schaumstoffkerns,
3. 3. Auftragen von Harz und/oder Leichtfüller auf die Oberfläche des Schaumstoffkerns,
4. 4. Laminieren des Bodens,
5. 5. Schleifen der Randbereiche der Längsenden,
6. 6. Laminieren der Oberseite,
7. 7. Anschleifen der gesamten Oberfläche,
8. 8. Aufbringen von Harz,
9. 9. Schleifen der Oberfläche,
10. 10. Aufbringen eines Oberflächenlackes,
11. 11. Feinstschleifen der Oberfläche und Aufbringen einer Politur.

For example, the following process steps are carried out in the process according to the invention:

1. 1. shaping a foam core,
2. 2. cleaning the surface of the foam core,
3. 3. applying resin and / or light filler to the surface of the foam core,
4. 4. lamination of the soil,
5. 5. grinding the edge regions of the longitudinal ends,
6. 6. lamination of the top,
7. 7. sanding the entire surface,
8. 8. application of resin,
9. 9. grinding the surface,
10. 10. application of a surface finish,
11. 11. Finely sand the surface and apply a polish.

The following examples serve to illustrate the invention.

Fig. 1

eine skizzenhafte Darstellung einer ersten Ausgestaltung der erfindungsgemäßen Vorrichtung;

Fig. 2

eine zweite Ausgestaltung der erfindungsgemäßen Vorrichtung,

Fig. 3

eine stark schematisierte Draufsicht auf eine erfindungsgemäße Vorrichtung.

In the figures show:

Fig. 1

a sketchy representation of a first embodiment of the device according to the invention;

Fig. 2

a second embodiment of the device according to the invention,

Fig. 3

a highly schematic plan view of a device according to the invention.

Fig. 1 shows a sketch of a first embodiment of the device according to the invention.

In this, a foamed polyurethane foam core 1 is laminated at the right longitudinal end with two fabric webs 2, 3 in such a way that the upper fabric web 2 laminating from the top to the bottom and the lower fabric web 3 from bottom to top around the profile of the longitudinal end are arranged. The fabrics are glass filament fabrics with a basis weight of 163 g / m ² (weave: linen) (source: Lange + Ritter).

Fig. 2 shows a sketch of a second embodiment of the device according to the invention.

In this embodiment, an existing polyurethane foam core 1 is again on the right side end of two upper fabric webs 2, 2 'around the profile of the longitudinal end running around multiple laminated that both upper fabric webs 2, 2' extend from the top to the bottom. In the Figures 1 and 2 It is shown that the fabric webs 2, 3 overlap only in the region of the right end of the board-like body 1. Of course, the fabric webs 2, 3 may also overlap both on the right and on the left side end. Of course, it is also possible that the two fabric webs run from bottom to top. Furthermore, the figures can also be understood in that they do not - as above - the longitudinal profiles but show the cross sections and it is in the fabric webs shown there around lateral fabric sheets are.

Fig. 3 shows a highly schematic plan view of an inventive device in the form of a surfboard. In Fig. 3 a board-like body 4 of the device is shown, which is represented by a gray shading 5 that the basis of the Figures 1 and 2 described overlap of the fabric webs 2, 3 extends in the edge region of the board-like body 4 in the circumferential direction of the body 4 in this embodiment over the entire length of the body 4 in its circumferential direction. In this way, the properties and advantages of the invention are achieved to a particularly large extent.

In the above embodiments, an epoxy resin of the designation L-285 from Lange + Ritter is used. As lightweight filler, a product of the name Q-Cell (article number 12.87 of Lange + Ritter) can be used.

The foam used may be the marketed products of the names Surfoam, Clarkfoam, Bennett, Burford, Phenolic Megalite, Starwalt, Styrodur and Jackodur.

1. 1. Zunächst wird ein aus Polyurethanschaum hergestellter Schaumkörper in eine surfbrettartige Form gebracht (Shaping).
2. 2. Anschließend wird der in Form gebrachte Schaumkörper (Blank) von auf der Oberfläche sitzenden Staubteilchen mit Hilfe von Absaugturbinen oder Staubsaugern vom Staub befreit.
3. 3. Danach wird ein Epoxyharz oder ein sogenannter Leichtfüller auf die Oberfläche gebracht, um eine reproduzierbare Oberfläche herzustellen.
4. 4. Zunächst wird die Unterseite des Schaumstoffkörpers mit Hilfe eines Glasfilamentgewebes (163 g/m²) laminierend belegt. Hierbei kann auch ein Aramidfasergewebe mit einem Flächengewicht von 110 g/m² benutzt werden.
5. 5. Im Anschluß daran wird der Randbereich des laminierten Endes angeschliffen, um eine größere Oberfläche für die noch aufzulaminierende weitere Gewebeschicht bereitzustellen.
6. 6. Anschließend wird die Oberseite entsprechend mittels eines Gewebes laminiert.
7. 7. Danach wird die gesamte Oberfläche angeschliffen, um eine größere Oberfläche für die Aufbringung eines Oberflächenharzes (top coat) bereitzustellen.
8. 8. Ein entsprechend geeignetes Oberflächenharz, insbesondere ein Epoxyharz, wird auf die Oberfläche des Laminates aufgebracht.
9. 9. Weiterhin wird mit einer Körnung von 80 bis 400 die Oberfläche angeschliffen,
10. 10. ein Oberflächenlack, insbesondere ein Acryllack, aufgebracht und schließlich
11. 11. ein Feinstschliff mit anschließendem Aufbringen einer Politur durchgeführt.

Production of a stringerfreien surfboard according to the invention.

1. 1. First, a foam body made of polyurethane foam is brought into a surfboard-like shape (Shaping).
2. 2. Subsequently, the shaped foam body (blank) is freed of dust particles sitting on the surface with the aid of suction turbines or vacuum cleaners.
3. 3. Thereafter, an epoxy resin or a so-called lightweight filler is brought to the surface to a reproducible Surface produce.
4. 4. First, the underside of the foam body is laminated using a glass filament fabric (163 g / m ² ). Here, an aramid fiber fabric having a basis weight of 110 g / m ² can be used.
5. 5. Following this, the edge region of the laminated end is sanded to provide a larger surface area for the further layer of tissue still to be laminated.
6. 6. Then, the top is laminated by means of a fabric accordingly.
7. 7. Thereafter, the entire surface is sanded to provide a larger surface area for the application of a topcoat.
8. 8. A suitably suitable surface resin, in particular an epoxy resin, is applied to the surface of the laminate.
9. 9. Furthermore, the surface is sanded with a grain size of 80 to 400,
10. 10. a surface finish, in particular an acrylic paint applied, and finally
11. 11. a Feinstschliff performed followed by applying a polish.

However, steps 2, 3, 10 and 11 are to be understood as optional steps to optimize the product.

To apply the tissue surfaces, the classical procedure by hand rest as well as vacuum technologies (for example the well-known vacuum infusion technique, Vasi) is applicable.

Claims (40)

1. Device for surfing or the like, with a board-like body comprising a laminate-encased foam core and an upper side and a lower side, at least the edge area of the front and/or rear longitudinal end and/or the left and/or right side end of the board-like body comprising if necessary at least two fabric laminate layers, at least one of which runs from the upper side to the lower side or vice versa around the profile of the corresponding end, characterised in that at least one fabric laminate layer of the upper and lower side runs respectively around the profile of the front and/or rear longitudinal end and/or the left and/or right side end from the upper side to the lower side or vice versa.
2. Device according to claim 1, characterised in that the at least one fabric laminate layers of the upper and lower side respectively lie directly on top of one another in the edge area of the front and/or rear longitudinal end and/or the left and/or right side end.
3. Device according to claim 1 to 2, characterised in that the ratio of the thicknesses of the total laminate layer from the upper side to the lower side is in the range of from 6:4 to 5:5.
4. Device according to one of claims 1 to 3, characterised in that the total laminate layer thicknesses of the upper side and lower side are the same size.
5. Device according to one of the preceding claims 1 to 4, characterised in that the number of laminated fabric layers of the upper side and lower side is the same.
6. Device according to one of the preceding claims 1 to 5, characterised in that the layer thicknesses of the individual fabric layers are at least almost identical.
7. Device according to one of the preceding claims 1 to 6, characterised in that the fabrics are chemically similar.
8. Device according to one of the preceding claims 1 to 7, characterised in that at least a portion of the fabric layers of the upper side and the lower side in the edge area of at least one front and/or rear longitudinal end and/or left and/or right side end are arranged in an alternating layer sequence.
9. Device according to claim 8, characterised in that all of the fabric layers of the upper and lower sides in the edge area of at least one front and/or rear longitudinal end and/or left and/or right side end are arranged in an alternating layer sequence.
10. Device according to one of claims 1 to 9, characterised in that the fabrics consist of glass fibres and/or aramid.
11. Device according to one of the preceding claims 1 to 10, characterised in that the fabric weight per unit area is 80 to 330 g/m² for glass fibres and 60 to 240 g/m² for aramid.
12. Device according to one of claims 1 to 11, characterised in that the fabrics correspond to at least one type of weave selected from a group consisting of linen, twill 1/3, twill 2/2 and unidirectional.
13. Device according to one of claims 1 to 12, characterised in that the foam core is made of polyurethane or polystyrene.
14. Device according to one of claims 1 to 13, characterised in that the foam core has a closed cell structure.
15. Device according to one of claims 1 to 14, characterised in that the fabric layers of the laminate are impregnated with epoxy resin.
16. Device according to one of claims 1 to 15, characterised in that the latter has no stringer.
17. Device according to one of claims 1 to 16, characterised in that the inner surface of the foam core is essentially free of dust.
18. Device according to one of claims 1 to 17, characterised in that the overlap of the fabric laminate layers extends in the edge area of the board-like body in peripheral direction of the body over a substantial portion of the length of the body, preferably substantially over the entire length of the body in this direction.
19. Device according to one of claims 1 to 18, characterised in that the board-like body is provided with a UV-resistant material in the region of its surface, in particular on its surface.
20. Device according to claim 19, characterised in that the UV-resistant material is contained in the laminate or forms a coating of the board-like body.
21. Method for producing a device for surfing or the like according to one of claims 1 to 20, by encasing in a laminating manner at least one edge area of the front and/or rear longitudinal end and/or the left and/or right side end of the foam core of the board-like body from the upper side to the lower side or vice versa about the profile with at least one fabric layer, wherein after completing the lamination at least the edge area of the corresponding end that has the at least one fabric layer comprises at least one additional fabric laminate layer, characterised in that at least one fabric laminate layer of the upper and lower side runs around the profile of the front and/or rear longitudinal end and/or the left and/or right side end from the upper to the lower side or vice versa.
22. Method according to one of claims 20 to 21, characterised in that the at least one fabric laminate layers of the upper and lower side respectively lie directly on top of one another in the edge area of the front and/or rear longitudinal end and/or the left and/or right side end.
23. Method according to one of claims 20 to 22, characterised in that the ratio of the thicknesses of the total laminate layer from the upper side to the lower side is in the range of from 6:4 to 5:5.
24. Method according to one of claims 20 to 23, characterised in that the total laminate layer thicknesses of the upper side and lower side are the same size.
25. Method according to one of claims 20 to 24, characterised in that the number of laminated fabric layers of the upper side and lower side is the same.
26. Method according to one of claims 20 to 25, characterised in that the layer thicknesses of the individual fabric layers are at least almost identical.
27. Method according to one of claims 20 to 26, characterised in that the fabrics are chemically similar.
28. Method according to one of claims 20 to 27, characterised in that at least a portion of the fabric layers of the upper side and the lower side in the edge area of at least one front and/or rear longitudinal end and/or left and/or right side end are arranged in an alternating layer sequence.
29. Method according to claim 28, characterised in that all of the fabric layers of the upper and lower sides in the edge area of at least one front and/or rear longitudinal end and/or left and/or right side end are arranged in an alternating layer sequence.
30. Method according to one of claims 20 to 29, characterised in that the fabrics consist of glass fibres and/or aramid.
31. Method according to one of claims 20 to 30, characterised in that the fabric weight per unit area is 80 to 330 g/m² for glass fibres and 60 to 240 g/m² for aramid.
32. Method according to one of claims 20 to 31, characterised in that the fabrics correspond to at least one type of weave selected from a group consisting of linen, twill 1/3, twill 2/2 and unidirectional.
33. Method according to one of claims 20 to 32, characterised in that the foam core is made of polyurethane or polystyrene.
34. Method according to one of claims 20 to 33, characterised in that the foam core has a closed cell structure.
35. Method according to one of claims 20 to 34, characterised in that the layers of fabric of the laminate are impregnated with epoxy resin.
36. Method according to one of claims 20 to 35, characterised in that the device has no stringer.
37. Method according to one of claims 20 to 36, characterised in that the surface of the foam core is cleared of dust particles prior to lamination.
38. Method according to one of claims 20 to 37, characterised in that prior to the lamination resin and/or lightweight filler is applied onto the surface of the foam core.
39. Method according to one of claims 20 to 38, characterised in that the board-like body is provided with a UV-resistant material in the region of its surface, in particular on its surface.
40. Method according to claim 39, characterised in that the UV-resistant material is contained in the laminate or forms a coating of the board-like body.

Images