DE202005010747U1 - Body of a canoe or a kayak is formed in a mold, by application of heat and vacuum, as a thin shell out of several layers of an originally thick and soft woven matting of mixed fibers - Google Patents

Abstract

The body of a canoe or a kayak is formed in a mold, by application of heat and vacuum, as a thin shell out of several layers of an originally thick and soft woven matting of mixed fibers including fibers consisting of glass and polypropylene.

Description

The The present invention relates to a boat in the form of a boat Canoes, kayaks or canadiers. Such boats are made of plastic known. In most cases, these boat body made of plastic in general produced in the laminated layer structure, wherein over a mold layer by layer is constructed with interposed glass fiber mats. It deals mostly liquid applied duoplast.

So will in DE 7710 847 U1 a Canadians described, the boat shell is formed in this way from glass fiber reinforced plastic. Incidentally, this document relates to the attachment of a spray ceiling Süllrand. The DE 8600276 U1 describes a whitewater kayak from the upper and lower shell, in which attention is paid primarily to the seat hatch and the exit option from this hatch. Today's whitewater kayaks are heavy and physically demanding, especially for carrying passages. Attempting to develop portable kayaks that can be stored in a backpack, as described, for example, in AT PS 341 364, has not yielded practical results because these designs are too unstable. Also touring kayaks are prone to deformation during driving and storage with increasing length.

The The present invention is directed to lightness and durability a canadier or kayak through the use of a new material. US Pat. No. 6,568,971 proposes a lightweight one Paddle made of polypropylene glass fiber reinforced produce and it is At the edge of this revelation also mentions that you may have one similar to whole kayak to produce this method, but without describing such a boat detail.

From the DE 33 28 596 C 2 is a water sports vehicle with a shell body known, the sub-layers are made by extrusion. Such a manufacturing method with only short fibers has the serious disadvantage of insufficient stability, moreover, the materials used there such as ABS (Acrylbutadienstyrol) prove to be photosensitive, so that a UV-protective outer layer is required.

The DE 198 09 264 C1 describes a very closely observable fiber layer arrangement for the production of moldings in general. The boatbuilding is only given as an example in addition to the obviously higher quality demanding use in the aerospace industry. This production is carried out with a complex and thus expensive forming process, is unsuitable for the simple boat, because only hot melt adhesive and fiber fabric must first be converted with heat energy in a floating structure, then to be brought in a mold under pressure in the desired shape. Such a kayak would be priceless.

The DE 102 01 457 also describes the preparation of a general purpose composite article by extrusion and subsequent application of pressure, even depending on the nature of a polymer. Only at the end of the description in the application examples in addition to table surfaces, pallets, golf carts and ship hulls are called, so that the actual suitability for kayaks or similar boats is not anticipated. The DE 19 44 680 U1 on the other hand, it merely refers to coloring a hull uniformly.

From the DE 696 05 428 T2 Finally, a sandwich plate is known, whose sandwich structure consists of rectangular or trapezoidal pipe sections, wherein the same are connected to a carrier fabric or tissue. Disadvantage of such a sandwich plate, however, is that it is not easy to bring in the desired shape because of their rigid character.

outgoing of the problem set forth in the prior art, it is Accordingly, the object of the present invention to provide a solution which allows a boat hull for a Canoe, kayak or Canadier make in a first step without big ones Effort and without using unnecessary energy a scrim made of simple fiber mats is placed in a mold, to then bring in a second step in a hard shell mold.

These Task is solved by that to soft and thick mats braided mixed fibers of glass fiber threads and Polypropylene fibers in several layers inserted into a mold are. These mats are about 2.5 to 4 mm thick per layer, very soft, due to the braided structure very elastic and adaptable and can therefore be very advantageous in a form of put into it and trap. Because these mats besides not particularly ordered Glass fibers also polypropylene fibers or other plastic fibers exist, the further addition of molten material is the further Processing process not necessary.

Another advantage of the braided mats is that with several layers, the desired thickness of the hull is precisely predetermined and thereby the risk of unwanted material distribution as in a heat-activated, floating structure is excluded. Already in the preliminary planning, the number of mats to be used for each section of the hull can be predetermined. As before In part, it has been proven to use three to four mats for the walls of the hull, while six mats are recommended for the floor, bow and stern. Advantageously, the mats can be pre-cut and fitted to the mold in the preform.

In a second step then a tear-off fabric is applied and about that placed a Saugvlies. The demolition tissue takes on two functions on: On the one hand leaves the formative structure the outside of the tissue on the adjacent mat to the tissue structure of the Tear-off tissue inversely embossed, non-slip surface the inside of the pressed mats, on the other hand is the demolition fabric helpful and necessary in the processing process as that soft absorbent fleece during the melting process not with the braided Matt glued and can be easily removed with the demolition tissue.

After this the mats have been formatted into the preform are, tear fabric and absorbent fleece airtight placed on the mats could be over one connected to one side or the bottom of the preform Valve below the mat layering so made a vacuum be that between the absorbent mat and preform located mats very tight and tightly pressed together. At the same time Here, with an applied temperature of about 165 ° C, the soft thick Mats to a hard thin Shell fused and cured. After the curing process the tear-off fabric is peeled off, whereby at the same time the absorbent fleece residue was removed.

While now one side due to the predetermined structure through the tear-off fabric a non-slip surface structure The other side facing the preform is smooth and hard. For example, one before the process of five to six Mat layers for a boat bottom existing deposit, which together about 17.5 mm apply can, under the vacuum creates a solid and shock-resistant layer from only 2.5 to 3.5 mm thick. A boat body shell is done with it and is preferably in only one operation in only one piece been prepared.

advantageously, neither is the application of UV-protective layers nor of color necessary for decoration, because the glass fiber mats are used not UV sensitive and the desired Color design is through the use of colored polypropylene threads or others soaked Thermoplastics achieved, also receives the hull through the braided structure of the mats used a definable, varied surface structure.

This Manufacturing process is both technically and from the point of view the energy consumption is very economical; the canoes made in this way, Kayaks or Canadians are characterized by a low weight, are still stable, impact and wear resistant. By use of very long fibers and also in a previously determined exactly Kind of come to rest sensitive areas of a kayak are made very sturdy and extremely resistant to torsion and dimensionally stable hull be made. With the precise Specification of how many mats should be used at which position, On the one hand, it can be processed very sparingly, on the other hand can the necessary places by placing additional mats in the manufacturing process strengthens become. Because the individual mats transitionless merge together, no edges.

Further Details, features and advantages will be apparent from the following Description of an embodiment shown in the drawing.

It demonstrate:

1 a schematic perspective view of a Canadiers with the new hull,

2 a top view,

3 a side view and

4 a front view.

The hull 10 is made from one-piece, seamless components for the hull 30 and thus is free of all weak points in the seam area. Depending on the purpose, the stability of the boat is determined by the number of glass mats fused together. It can be introduced mats with defined and undefined fiber arrangement. Particularly stressed zones, such as bow 14 , Rear 16 and floor area 14 are simply reinforced by additional layers. In a kayak, an access hatch for the paddler is designed so that a Süllrandprofil 12 by joining with the hull 10 connected is.

In a Canadier shown as an example seats are in a similar manner 20 , Support 22 or 24 with the Süllrand 12 connected. If desired, the execution of the hull may be made partially or entirely in sandwich construction with an intermediate layer of foam. This increases the stiffness and buoyancy when the kayak is full of water.

Another advantage of the invention is that over conventional kayaks in the Mon In addition, the kayak seat can be dispensed with for days on additional stiffening of the fuselage, which leads to further weight savings 20 Made of glass matte reinforced thermoplastic material, the weight can be lowered again.

The color of the surface of the hull 30 leads to a further improvement of the kayak made of glass mat reinforced thermoplastic. Colored cover layers and colored thermoplastics are suitable.

Usually for the hull 30 used a material having resin content of about 40% by weight and glass fiber volume of about 60% by volume.

Claims (14)

Canoe, kayak or canadin boat shaped article produced under vacuum and heat from a plurality of layers placed in a mold, characterized in that the layers prior to deformation consist solely of thick, soft mats of braided mixed fibers with glass fiber threads and polypropylene fibers which, after being deformed Extract from under the covered layers of mats to form a thin boat shell. Boat moldings according to claim 1, characterized in that a plurality of layers depending on the location in the boat, where for the wall of the hull about three layers, for Ground, bow and stern are inserted into the mold about six layers are. Boat moldings according to claim 1 and 2, characterized in that the braided Tailored mats in multiple layers in the mold are. Boat moldings according to claims 1 to 3, characterized in that the long-fiber glass and polypropylene threads are intertwined into a mat and the mats have a thickness per layer from about 2.5 mm to 4 mm. Boat moldings according to claim 3, characterized in a layer of five to six layers a finished bowl with a stick from 2.5 to 3.5 mm. Boat moldings according to one or more of claims 1 to 5, characterized in that the glass and polypropylene threads are just as long as the boat body itself. Boat moldings according to one or more of claims 1 to 6, characterized in that the glass and polypropylene threads are differently intertwined in their layers and the boat shaped body so obtains a particularly torsion-resistant shape. Boat moldings Claim 7, characterized in that the braided strands of Mats are interwoven at right angles to each other Boat moldings according to one or more of claims 1 to 8, characterized in that the boat shaped body made from only one part. Boat molding according to one or more of claims 1 to 9, characterized in that the polypropylene content 40 Weight percent and glass fiber content 60 Percent by volume. Boat moldings according to one or more of claims 1 to 19, characterized in that the structure of polypropylene threads is visible and the boat shaped body a corresponding surface structure give. Boat moldings according to one or more of claims 1 to 11, characterized in that the polypropylene threads are colored and the boat shaped body dyed accordingly is. Boat moldings according to one or more of claims 1 to 12, characterized in that Fiberglass and polypropylene are braided in a certain way and so after the manufacturing process on the surface of the desired pattern looming. Boat moldings according to one or more of claims 1 to 13, characterized in that a demolition fabric with a specific structure on the layers is placed on mats before sucking, which is the inside of the hull a non-slip surface structure gives.