WO2009027026A1

WO2009027026A1 - Method for the production of large-surface parts and of molded bodies, and molded bodies produced according to said method

Info

Publication number: WO2009027026A1
Application number: PCT/EP2008/006757
Authority: WO
Inventors: Dirk Schäfer
Original assignee: Schaefer Dirk
Priority date: 2007-08-24
Filing date: 2008-08-18
Publication date: 2009-03-05
Also published as: DE102007040027A1

Abstract

Large-surface parts and molded bodies are produced in that a release agent is applied to the entire surface of a mold, and a resin layer is subsequently applied. A fiber/resin layer is applied onto the resin layer. The fibers are high-strength and differently aligned, and the composite made of the resin layer and fiber/resin layer is pneumatically or mechanically compacted, released from the mold, and reinforced by heat treatment. The molded bodies in the form of transport containers are formed in one piece and have an opening and a locking element on fronts thereof.

Description

Process for producing large-area parts and foπnkörpern and Formkδrper produced thereafter

The invention relates to a method for producing large-area parts and foπnkörpern containing fibers and a hollow shaped body in the form of a container which is suitable for the transport of cargo, with an opening on one side of the container and a closure element for the opening a ceiling, a floor, a back and parallel side walls.

Such containers are particularly suitable as cargo containers in which a weight reduction and an increase in strength over metallic containers such as aluminum containers play an essential role.

Aluminum containers are lightweight compared to other metallic containers, but their mechanical strength is considerably lower.

In aviation, it is assumed that a weight reduction of 100 kg over a distance of 1000 km results in a fuel saving of about 30 l.

From EP 0 852695 B1 an explosion-proof container of at least three material bands is known, of which a first inner band is nested in a second band and this in turn in a third band. The bands are mutually arranged so that they enclose a volume and form a container wall with a thickness which corresponds to the sum of the thickness of at least two bands of material. The bands are superimposed. The longitudinal axes of the three material bands extend substantially perpendicular to one another, wherein the bands each have a substantially polygonal cross-section. The single material strip is produced in such a way that a mandrel with at least one flexible sheet of a high-strength fiber material is wrapped in a multi-layered manner under such a tension that no cavities can form between successive layers. The layers of material are bonded together to form a seamless first band and then the band is pulled off the mandrel. The connection of Layers of material are made in such a way that the high-strength fiber material is brought into contact with a resin matrix and the layers of the high-strength fiber material and the resin matrix are solidified on the mandrel. The high strength fiber material may be contacted with the resin matrix prior to wrapping or wrapping. It is also possible that the high-strength Faseπnaterial comes into contact with the resin matrix after wrapping. An adhesive is applied to the fabric at least on one side prior to wrapping with the tapes.

From EP 0 617 687 B1 an air cargo container is known, which consists of several sheet-like plates, and which has a device for attenuating an explosion pressure wave. This device comprises one or more expandable regions that stretch under the explosive load and thereby absorb some of the explosive energy. The expandable regions have one or more non-planar bodies which are provided on a surface with absorbent, defoπnierbarem or compressible material. This material may be disposed between the plates and / or on a surface of one of the plates or on two plates. Instead of sheet-like plates and plates of woven or knitted fabric material can be used. In this case, the fiber material is embedded within a matrix of a polymeric synthetic resin or an elastomer. As a polymeric resin, for example, epoxy resin is used. The fibers have high tensile strength and aramid fibers or glass fibers or a combination of these two types of fibers are suitable.

DE 4408 193 C1 relates to an air cargo container with a container bottom, on which a housing is arranged with a parallel to the container bottom roof, consisting of a cuboid, the container door having main portion on the bottom plate and a protruding over the bottom plate side portion with upwardly inclined bottom part exists on one side of the main section. The housing is detachably connected to the container bottom and consists of three connectable in two mutually parallel vertical planes plastic moldings. A middle cuboid shaped part has the container door. The bottom of one of the two side moldings is from the connection plane to the outside, while the second side mold part has the shape of a flat cuboid. The housing is made of molded parts Made of plastic, which contains short fibers for reinforcement, eg. As glass or carbon, these fibers can be up to three inches long. The fibers are oriented in the main load direction. The plastic materials are also added to make it incombustible, as is common in plastic parts in aircraft. The moldings are preferably made by deep drawing, but can also be made for example by blow molding.

Conventional methods of producing air cargo containers generally employ elongate glass or carbon fiber material, which is very expensive. In this case, the fiber material is connected in successive layers to form a tape which is wound up with a tensile stress of at least 1.8 kg / m to 893 kg / m. The winding of the tape under tension requires a technical process step, which makes the production complex and expensive.

Using short glass or carbon fibers having lengths less than 30 mm in a single layer, the short fibers being obtained by cutting long fibers reduces the strength of a container compared to a container containing long fibers.

The object of the invention is to provide a method with which large-area parts and moldings can be produced very inexpensively, have low weight and high strength and dimensional stability despite the use of short fibers.

This object is achieved by a method in which a) a release agent is applied over the entire surface on or in a form, b) a resin layer is applied to the release agent, c) a laminate layer of high-strength fibers of short lengths and different orientations and a Resin is applied, and d) the composite resin layer according to b) and the laminate layer according to c) is compressed mechanically or pneumatically. In one embodiment of the method, the laminate layer consists of alternating strips of fiber fabric and fiber mat on which a resin is applied. The fibers used for this purpose are selected from the group of glass fibers, carbon fibers, polyamide fibers, aramid fibers and mixtures thereof.

hi embodiment of the method, the composite of resin layer and laminate layer is released from or out of the mold and then solidified by heat treatment.

The further embodiment of the method results from the subclaims 4 to 18.

In the context of the object of the invention, a molding in the form of a container is to be created, which has low weight with high dimensional stability and can be manufactured at lower cost than comparable cargo containers.

Such a hollow shaped body in the form of a container, which is suitable for the transport of cargo, with an opening on one side of the container and a closure element for the opening, comprising a ceiling, a bottom, a rear, two parallel side walls and optionally a sloping wall, characterized in that the container is integrally formed and that the ceiling, the bottom, the back and the side walls of a resin and a laminate layer in the form of a fiber-resin matrix, wherein the fiber-resin matrix one to contains three superposed layers of high strength fibers.

In one embodiment of the invention, the closure element comprises a resin / fiber resin matrix containing one to three superposed layers of high strength fibers in the fiber-resin matrix.

The invention achieves the advantages of applying the resin, hardener and fiber components to or in the mold by spraying, thereby reducing manufacturing time and employing short cut fibers available on the market either as recycled or as virgin material of specific quality , The invention will be explained in more detail below with reference to the drawings. Show it:

FIG. 1 schematically shows a basic arrangement for coating surfaces with a resin and with a laminate layer of a fiber-resin matrix,

Figure 2 schematically shows an arrangement similar to that in Fig. 1 for coating a

Surface with a resin and a laminate layer,

FIG. 3 is a schematic plan view of the alignment of short fibers in multiple layers;

Figure 4 is a perspective view of a mold on the outside of release agent, a

Resin layer and a laminate layer of alternating strips of glass fiber fabric and fiberglass mat are applied,

FIG. 5 schematically shows a shaped body in the form of a transport container in a perspective view,

Figures in section the engagement of a left and right supernatant of a standard

Sa and 5b base plate of the transport container in rails,

Figure 6 is a perspective view of a mold for the outer coating, with hinged plates positioned by rotatable clamping elements during the manufacture of a molded article to the mold,

FIG. 7 shows a perspective view of a mold for the inner coating, with hinged plates which are joined to the mold by means of clamping closures fastened to the abutting edges during the production of a shaped body,

8 shows a perspective view of a shaped body as a clothing transport container with a two-part closure element, FIG. FIG. 9 shows a perspective view of a shaped body as in FIG. 8, with a closure element in the form of a one-part sliding door,

9a shows a perspective view of a molded body as in FIG. 8, with a closure element in the form of a two-part sliding door, FIG.

FIG. 10 shows a perspective view of a shaped body as a value freight transport container, with a hinged door as a closure element,

11 is a perspective view of a molding according to FIG. 10, with a sliding door as the closure element, FIG.

Figure 12 is a perspective view of a large-capacity transport container with doors as

Closure element,

13 shows a perspective view of a molded body as an animal transport container, and

Figure 14 is a perspective view of a shaped body similar to that in Figure 8, with a plate and a folding element as closure elements.

In the method according to the invention, a resin / fiber spraying process is used, which is a partially mechanized manual process for coating large-area parts. Here, the fibers used for mechanical reinforcement are sprayed together with a resin on or in a mold. Since only short fibers can be sprayed, if no additional reinforcements are provided, the process is limited to the production of low loaded components. In a resin / fiber spraying device, the material components resin, hardener and rovings are brought together and injected by compressed air into or onto the mold. Since the rovings are contiguous continuous fiber strands, which are usually used in composite materials, they are previously cut in a cutting to about 10 to 30 mm long short fibers, since only these can be sprayed. To avoid curing reactions in the spray device are Usually for the resin, which is mixed with a hardener or with a catalyst, and for the short fibers separate nozzles present, so that the mixing of resin and short fibers takes place only in the free jet or in or on the mold. The achievable fiber content is between 20 to 60% by weight of the total weight of the part made by coating. To achieve a uniform wall thickness, a uniform guidance of the spray nozzles is required.

Fig. 1 shows schematically a basic arrangement for coating a sheet-like part 1 with a coating 2. The fiber injection device comprises a first resin container 3, a second resin container 4, a compressed air supply 5 and a fiber supply 6. In the first resin container 3 is a resin which is mixed with a catalyst. The resin in the second resin container 4 contains a hardener for accelerating resin hardening. The fiber stock 6 consists of rovings, which are guided over a pulley and a pair of transport rollers to a cutting unit 13, which cuts the rovings into short fibers of 10 to 25 mm in length. Behind the cutting unit 13 is a second pressure branch line 26, which opens into a pressure main 28 in a pressure regulator 28. Above the main pressure line a short fiber container 15 is arranged, which is connected via a first pressure branch line 16 to the main pressure line 11. The resin / fiber spray device can process either short fibers from the short fiber container 15 or short fibers cut rovings. Preference is given to using short-cut fibers which are available on the market either as recycled material or as fresh material of specific quality. From the short fiber container 15, a line 16 'leads to the pressure regulator 28. In the line 1 & the short fibers reach the fiber spray nozzle 18 via the pressure regulator 28.

The first resin container 3 is connected via a pressure branch line 7 to the main pressure line 11. Similarly, the second resin container 4 is connected via a pressure branch line 8 to the main pressure line 11.

From the first resin container 3 via a pressure regulator 9, a spray nozzle line 17 to a pivotable spray nozzle 12. Furthermore, a pivotable spray nozzle 14 via a spray nozzle line 27 and a pressure regulator 10 to the second resin container 4 is connected. Between the two spray nozzles 12 and 14 for the application of a resin, a pivotable fiber spray nozzle 18 is arranged, which is connected via a pressure regulator 28 to the main pressure line 11. The individual process steps in the fiber spraying process are the application of a release agent to the flat part 1, the spraying of a catalyst-equipped resin from the first resin container 4 by means of the spray nozzle 12. A resin layer is formed on the release layer. On this resin layer, the simultaneous spraying of short fibers from the fiber spray nozzle 18 and the resin mixed with a hardener from the second resin container 4 by means of the spray nozzle 14. Both the resin layer and the laminate layer are injected by means of compressed air, via the main pressure line 11 and the spray nozzle lines 17, 27, the spray nozzles 12, 14 and the fiber spray nozzle 18 acted upon. In this case, the resin added with a hardener and the short fibers for the laminate layer are separately sprayed onto the resin layer in a free jet. The mixing of resin and short fibers takes place in a free jet on the previously applied resin layer.

The spray nozzle 14 and the fiber spray nozzle 18 are initially aligned horizontally and are pivoted horizontally to coat the entire width of the part 1 with a fiber / resin matrix. Thereafter, the nozzles are displaced vertically as often and again pivoted horizontally until the total height of the part 1 is coated with a fiber / resin matrix. Thereafter, the composite of resin layer and fiber / resin matrix is mechanically smoothed and compacted with a roller 19. Instead of the mechanical compression and a pneumatic compression can be made by the fiber spray nozzle is acted upon exclusively with compressed air and this compressed air evenly sweeps over the coating 2 of the sheet part 1. The pressure lines of the fiber spraying device are designed to be flexible, so that the nozzles can be displaced vertically and swiveled without problems.

To reinforce the mechanical strength of the composite of the resin layer and the fiber / resin matrix, a second and also a third fiber layer are provided in the fiber / resin matrix in addition to a first fiber layer, as shown in FIG. 3 in a cross section through a fiber / resin matrix is. This is done by first applying a first fibrous layer, as described above, in the fiber / resin matrix. Thereafter, the fiber spray nozzle 18, which is for example a slot die, from the Horizontal position rotated by an angle greater than 0 ° to less than 180 ° and applied a second layer of fiber. If necessary, a third fiber layer is applied in the same way by the fiber spray nozzle 18 is again rotated by an angle greater than 0 ° to less than 180 ° and in this position, the third fiber layer is applied. After the application of the second or third fiber layer, this is covered with a resin layer.

The high-strength short fibers have an average fiber length of 10 to 30 mm and are selected from the group of glass fibers, carbon fibers, polyamide fibers, aramid fibers and mixtures thereof. The high-strength fiber content is 20 to 60% by weight of the total weight of the resin layer-fiber / resin matrix composite. The tensile strength of the high-strength fibers is 500 to 4500 N / mm ² . The modulus of elasticity is in the range of 30 to 500 kN / mm ² . The elongation ε at room temperature is between 0.5 and 5% of the normal length. For the fiber / resin matrix of the laminate layer, a thermoplastic resin is selected from the group consisting of polypropylenes, propylene-ethylene copolymers, polyethylenes, polystyrenes, polyvinyl chlorides, polyamides, polyurethanes, ABS resins, polysulfones, acrylates.

The apparatus shown in Fig. 2 is similar to that of Fig. 1 for coating a sheet member 1 with a resin / laminate layer of a fiber / resin matrix. In this apparatus, the spray nozzles 12, 14 and the fiber spray nozzle 18 are aligned vertically or obliquely to apply a second fiber layer to the sheet-like member 1 on the first fiber layer of the laminate layer. All parts of this device coincide with the corresponding parts of the same numbering of the device according to FIG. 1, so that they will not be described again.

From Fig. 3, the different orientations of the fibers arranged in three layers can be seen.

Referring to Fig. 4, the coating of a mold 20 having a resin layer and a fiber / resin matrix will be described. On the mold 20, a release agent 21 is applied and then a resin layer 22. Suitable release agents are waxes based on aliphatic hydrocarbon compounds, which generally contain surfactants. The mold 20 is characterized by a mold Reinforcement 25 reinforced. To achieve additional strength on mechanically highly stressed surfaces or edges of the coating on the mold 20, the laminate layer is reinforced with alternating strips of fiber fabric 24 and fiber mat 23. If necessary, a resin is applied to these strips. The strip material is selected from the group consisting of glass, carbon, polyamide, aramid fibers and mixtures thereof.

The application of the coating takes place in principle with a device as described with reference to FIG. 1 or FIG. 2. The mechanical solidification of the coating is done by laminating the coating by means of a roller or by pressurizing the coating with compressed air via the fiber spray nozzle.

In Fig. 5, a shaped body in the form of a transport container 29 is shown schematically. The transport container 29 comprises a standard bottom plate 30, mutually parallel side walls 33, 34, a rear wall 35, a front wall 37, a ceiling 38 and extending between the one side wall 34 and the bottom plate 30 inclined wall 36. At the front of the transport container 29 is located an opening 39. The standard bottom plate, which may be for example up to 304 cm long and up to 210 cm wide, has a left overhang 31 and a right projection 32 on. As can be seen from the detail drawings of FIGS. 5a and 5b, the left projection 31 engages a rail 40 and the right projection 32 with a rail 40. Such rails 40, 40 are for example in the cargo holds of aircraft and serve for fixing of transport containers in their position. The bottom plate 30 may also be shaped without such protrusions.

The opening 39 may be closed by a two-part door, the parts of which are hinged to the upper edge and lower edge of the opening 39 or closed by a one-piece or two-part sliding door, as will be explained later with reference to FIGS. 8, 9 and 9a.

Shaped bodies or hollow shaped bodies are to be understood as meaning the containers of different configurations described below, whose bottom plates are formed with or without protrusions. The production of foπnkörpern takes place optionally using an inner or outer mold, by means of which the individual walls of a container are made by coating. The coating process proceeds according to the process steps as described with reference to FIGS. 1, 2 and 4.

The perspective view of a so-called inner mold 41 in Fig. 6 consists of hinged part plates, which position a clamping device 32 and clamping elements 43 to the inner mold 41.

The term inner mold 41 refers to the fact that the mold is located inside the hollow molded body during its manufacture. This inner mold 41 is used for the production of the transport container 29 shown in Fig. 5. It consists of hinged sub-plates 33 ', 33 "to 38', 38", which are positioned by the clamping device 42 and rotatable clamping elements 43 to the inner mold 41. The paired sub-panels 33 ', 33 "to 38', 38" each form the underlay for the production of the parallel side walls 33, 34, the rear wall 35, the inclined wall 36, the front wall 37 and the ceiling 38 of the transport container 29 of FIG. 5. The coating of these sub-panels is carried out from the outside according to the method described above. The sub-plates 33 'and 33 "are connected, for example hinges, not shown, with the sub-plates 38" and 30 ", but can also be firmly connected without such hinges with adjacent sub-panels.

The detailed drawing A shows in cross-section the interaction of the partial plates 33 'and 33 "at their common abutment edge 44. The following explanations also apply mutatis mutandis to all other pairwise cooperating partial plates 34', 34" to 38 ', 38 " the abutment edge 44 is anchored at one end in the partial plate 33 'while the other end is connected to the tensioning device 42. The partial plate 33' has an entry or cut near the abutting edge, while the partial plate 33 "has an incision in the region of the abutting edge has congruent complementary projection. In the erected state of the sub-plate 33 ', 33 ", as shown in the detail drawing A, the entry and the projection are aligned, so that the sub-plates 33', 33" form a continuous smooth surface. During the outer coating of the inner mold 41 according to the inventive method for producing the molded body or the transport container 29, larger amounts of short cut fibers are applied to the edges and bump corners of the inner mold 41 than to the outer surfaces of the partial plates. After the densification of the shaped body produced by the coating on the inner mold 41, the clamping device 42 and the clamping elements 43 are loosened and removed so that in each case two partial plates connected by a hinge can be folded and removed from the molded body or the transport container. By using the inner mold 41 for the production of the molded body whose inner surfaces are smooth.

In Fig. 7, a so-called outer mold 45 is shown, the inner sides for the production of a shaped body or the transport container 29 shown in FIG. 4, are procedurally coated. The bottom plate 30 '', side wall plates 33 '' ', 34' '', rear wall plate 35 '', oblique wall plate 36 '' ', front wall plate 37' 'and ceiling plate 38' 'hold snap fasteners 46 together to form the outer mold 45 After the densification of the coating applied to the insides of the plates, the quick-release closures 46 are opened so that the plates can be folded outwards and the shaped body in the form of a transport container The outer surfaces of the molded body are largely smooth in this manufacturing process.

The molded articles, whether produced by means of the inner or outer molds 41 and 45 respectively, are subjected to a final heat treatment in order to completely cure the composite of resin layer and laminate layer.

8 is a perspective view of a molded article in the form of a garment 47 whose outline is similar to that of the transport container 29 according to Figure 5, with the difference that a two-part closure element 50 is provided for closing and opening the openings of the garment 47 , The two-part closure element 50 is in the directions of the double arrows 51, 52 up and hinged plates 48, 49, which close the opening of the garment 47. The lower plate 48 is connected via a hinge, not shown, with the bottom plate 30 and the upper plate via a hinge to the ceiling 38. Along the abutting edge 53, the two plates 48, 49 lie on one another either with smooth surfaces or are in engagement with each other with a projecting / projecting area cross-section, similar to the detailed drawing A in FIG.

Fig. 9 shows a further embodiment of a garment container 57, similar to the clothing container 47 of Fig. 8. The opening of this garment 57 closes a one-piece sliding door 54 which is mounted in vertical slots 55, 56 in the parallel side walls 33, 34 of the garment 57 and is guided. In Fig. 9, the sliding door 54 is shifted to the right outside the garment so as to partially open the opening. The detail B in FIG. 9 shows the sliding door 54 pushed into the vertical slot 56.

In a further embodiment of a garment container 57, as shown in Fig. 9a, a two-part sliding door 58 is provided instead of the one-piece sliding door. The two sliding door parts 59, 60 are also guided in vertical slots in the parallel side walls and in the collapsed state by a groove / spring connection with each other in engagement, d. H. at their abutment surfaces, they have tongue and groove, which interlock.

All the closure elements of the moldings, whether it is the hinged plates 48, 49 or the sliding doors 54, 58, expediently consist of the same material as the moldings and are manufactured by the method according to the invention. Of course, instead of hinged plates and sliding doors also closure elements made of other materials can be used, such. B. flexible, werter- and tear-resistant fabric made of plastics.

FIGS. 10 and 11 each show a value-freight container 61 or 62, which has a one-piece folding door 63 or a vertically movable sliding door 64 as the closure element. The hinged door 63 of the value-freight container 61 is fastened by a hinge to the ceiling of the container. The sliding door 64 of the container 62 passes through a horizontally extending slot 65 in the ceiling of the container. In Fig. 11, the sliding door 64 is lifted slightly so as to partially release the opening of the container. In Fig. 12, a further embodiment of a transport container 66 for large-sized goods and goods is shown. The dimensions of this transport container 66 are up to L 223 x W 305 x H 154 cm, with L = length, B = width and H = height. The opening of the container 66 closes a four-part door 68, the outer parts left and right aligned hinges 69, 70 is hinged to the side walls 71, 72. The two internal parts of the door 68 are also attached by means of hinges 69, 70 on the outer parts of the door. The dimensions of the bottom plate 67 are up to L 223 x W 305 cm.

The transport container 66 and the door 68 are manufactured separately from each other, wherein the transport container 66 by means of an inner or outer mold, as described with reference to the figures 6, 7, is prepared. The separately made door 68 made of the same material as the transport container is attached to the transport container 66 by means of the hinges 69, 70. The side walls 71, 72, rear wall 74, ceiling 73 and bottom plate 67 can also be manufactured individually and then assembled to the transport container 66.

For animal transport, in particular horse transports, is suitable for up to three horses designed animal transport container 75, as shown in Fig. 13. The dimensions of this container are up to W 188 x D 234 x H 332 cm, with B = width, T = depth and H = height. The animal transport container 75 has on one of the two narrow sides 79 a through the narrow side continuous, overhead opening 76, and at the rear on one of the two longitudinal sides 80 a door 77 as an access door in the interior of the container 75. The door 77 has a door opening 78 at the top, which extends across the door and is reinforced by means of transverse struts. The two mutually parallel narrow sides 79 of the cuboid animal transport container 75 are expediently reinforced externally by longitudinal struts 81. At the mutually parallel longitudinal sides 80 transverse struts 82 are arranged in addition to the longitudinal struts 82 as reinforcing elements.

FIG. 14 is a schematic perspective view of a transport container 83, similar to the container in FIG. 8. For closing the opening of the transport container 83, closure elements 84, 85 are provided. The opening of the transport container 83 extends over a part of the front side. The closure member 84 is shaped as a rectangular plate and slanted at the two lower corners of a foot portion 86 different degrees. To close the transport container 83, the closure element 84 is placed in front of the opening in the front of the transport container 83 and then the other closure element 85, which is a two-part folding element, in which the two parts are hinged to each other via hinges 87, on the outside the closure element 84 folded down. The further closure element 85 is articulated via hinges 88 on the upper edge of the front side and by means of the hinges 88 via this upper edge pivotable or rotatable.

Claims

claims

1. A process for the production of large-scale parts and of moldings containing fibers, wherein

a) a release agent is applied over the entire surface on or in a mold, b) a resin layer is applied to the release agent, c) a laminate layer of high-strength fibers of short lengths and different orientations and a resin is applied to the resin layer, and d) the composite the resin layer according to b) and the laminate layer c) is compressed mechanically or pneumatically.

2. The method according to claim 1, characterized in that the laminate layer is reinforced from alternating strips of fiber fabric and fiber mat, on which a resin is applied.

3. The method according to claim 1, characterized in that the resin of the laminate layer, a curing agent for accelerating the Harzaushärtung is added.

4. The method according to claim 1, characterized in that the resin layer, a catalyst is added.

5. The method according to claim 1, characterized in that the resin layer and the laminate layer are sprayed onto or into the mold by means of compressed air.

6. The method according to claim 1 or 2, characterized in that the composite of resin layer and laminate layer is released from or out of the mold and then solidified by heat treatment.

7. Process according to claim 1, characterized in that the resin, the hardener and the short fibers for the laminate layer are applied separately to the resin layer in the free jet. 07/029 DS \ η

are injected and that the mixing of resin and short fibers in free jet on or in the form takes place.

8. The method according to claim 1, characterized in that the high-strength fibers are applied in up to three layers one above the other on the resin layer.

9. The method according to claim 8, characterized in that the high-strength fibers of a layer are aligned differently from one another and that the fiber direction from one layer to the next layer include angles greater than 0 to less than 180 °.

10. The method according to any one of claims 1 to 9, characterized in that the high-strength fibers from the group glass fibers, carbon fibers, polyamide fibers, aramid fibers and mixtures thereof are selected.

11. The method according to any one of claims 1 to 10, characterized in that the high-strength fibers are cut into Kurzschnittfaseπi with an average fiber length of 10 to 30 mm.

12. The method according to any one of claims 1 to 11, characterized in that high-strength fibers are added to the resin with a proportion of 20 to 60 wt .-% of the total weight of the molding.

13. The method according to any one of claims 1 to 12, characterized in that for the fiber-resin matrix of the laminate layer, a thermoplastic resin from the group polypropylenes, propylene-ethylene copolymers, polyethylenes, polystyrenes, polyvinyl chlorides, polyamides, polyurethanes, ABS- Resins, polysulfones, acrylates is selected.

14. The method according to claim 10, characterized in that high-strength fibers are used with a tensile strength of 500 to 4500 N / mm ² .

15. The method according to claim 1, characterized in that along edges and at the corners of the mold larger amounts of high-strength fibers are applied to the resin layer than on the planar sides of the mold.

16. Hollow shaped body of a container having an opening on one side and a closure element for the opening, comprising a ceiling, a bottom, a rear, a front, mutually parallel side walls and optionally a sloping wall, characterized in that the Container is integrally formed and that the ceiling, the bottom, the rear, the front, the side walls and the inclined wall of a resin and a laminate layer in the form of a fiber-resin matrix, wherein the fiber-resin matrix one to three superimposed Contains layers of high-strength fibers of short lengths.

A hollow shaped article according to claim 19, characterized in that the closure element comprises a resin / fiber resin matrix containing one to three superposed layers of high strength fibers in the fiber-resin matrix.

18. A hollow molded article according to claim 19, characterized in that the closure element (50) of a container (47) consists of two hinged plates (48, 49) fixed with hinges on the ceiling (38) and on the bottom plate (30) are.

19. Hollow formed body according to claim 19, characterized in that the closure element of a container (53) is a one-piece sliding door (54) guided in vertical slots (55, 56) in the side walls (33, 34) of the container (53) ,

20. A hollow molded article according to claim 19, characterized in that the closure element of a container (57) is a two-part sliding door (58) made of sliding door parts (59, 60), in vertical slots (55, 56) of the side walls (33, 34) guided is.

21. Hollow shaped body according to claim 23, characterized in that the two sliding door parts (59, 60) are equipped at their abutment surfaces with tongue and groove.

22. A hollow molding according to claim 19, characterized in that the closure element of a container (61) is a one-piece flap door (63) which is fixed to the ceiling (38) via a hinge.

23. Hollow formed body according to claim 19, characterized in that the closure element of a container (62) consists of a vertically movable sliding door (64) which passes through a slot (65) in the ceiling (38) of the container (62).

24. Hollow Foπnkörper according to claim 19, characterized in that a four-part door (68) for closing the container (66) is provided, the outer parts left and right by hinges (69, 70) on side walls (71, 72) of the Container (66) are articulated and that inner parts of the door (68) by means of hinges (69, 70) are connected to the outer parts of the door (68).

25. Hollow shaped body according to claim 19, characterized in that the narrow sides (79) and longitudinal sides (80) of a cuboid container (75) have longitudinal struts (81).

26. Hollow shaped body according to claim 28, characterized in that the longitudinal sides (80) are equipped with transverse struts (81).

27. A hollow shaped body according to claim 28, characterized in that in one of the longitudinal sides (80) a door (77) is arranged with an overhead opening (78).

28. A hollow shaped body according to claim 28, characterized in that in one of the narrow sides (79) has a continuous, overhead opening (76) is present.

A hollow shaped article according to any one of claims 19 to 31, characterized in that the high-strength fibers have an average length of 15 to 30 mm.

30. A hollow shaped article according to any one of claims 19 to 32, characterized in that the fibers are arranged in one to three layers in the fiber / resin matrix and that within the individual layers, the fibers are aligned parallel to each other.

31 hollow shaped body according to claim 33, characterized in that the fiber directions in the individual layers angle greater than zero to less than 180 ° with each other.

32. A hollow shaped article according to any one of claims 19 to 34, characterized in that it is the fibers to glass fibers, carbon fibers, polyamide fibers, aramid fibers and mixtures thereof.

33. A hollow shaped article according to any one of claims 19 to 35, characterized in that as resin for the fiber / resin matrix, a thermoplastic resin of polypropylene, propylene-ethylene copolymers, polyethylenes, polystyrenes, polyvinyl chlorides, polyamides, polyurethanes, ABS resins, polysulfones , Acrylates is selected.

34. A hollow shaped article according to any one of claims 19 to 36, characterized in that the proportion of fibers is 20 to 60 wt .-% of the total weight of the molding.

35. A hollow shaped article according to any one of claims 19 to 37, characterized in that the average amount of fiber along the edges and bump corners is greater than in the walls of the molding.

36. Hollow shaped body according to claim 19, characterized in that the fibers have a tensile strength of 500 to 4500 N / mm ² .

37. A hollow shaped body according to claim 19, characterized in that the opening of the transport container (83) extends over a part of its front side and that on the upper edge of the front side a closure element (85) by means of hinges (88) is articulated.

38. A hollow shaped body according to claim 40, characterized in that the closure element (85) is a hinged element of two parts which are hinged to each other via hinges (87) and that a closure element (84) as a rectangular plate with bevelled lower corners in its foot (86) the opening of the transport container (83) closes and the folding element on the outside of the closure element (84) can be folded down.