WO2024074635A1

WO2024074635A1 - Fibre-reinforced and recyclable structure component and method for providing same

Info

Publication number: WO2024074635A1
Application number: PCT/EP2023/077619
Authority: WO
Inventors: Bosse ROTHE; Moritz Jonathan REINERS
Original assignee: Holy Technologies Gmbh
Priority date: 2022-10-07
Filing date: 2023-10-05
Publication date: 2024-04-11
Also published as: DE102022125975A1

Abstract

The invention relates to a fibre-reinforced and recyclable structure component (1), having: - a resin system, which forms a matrix (2), - a fibre system (3) with a continuous fibre bundle (4) held in the matrix (2), wherein the arrangement and/or the orientation of the continuous fibre bundle (4) defines at least part of the shape of the structure component (1), wherein the resin system comprises at least one polymer material (6) for the matrix (2), wherein the resin system is configured such that it permits a de-polymerisation of the polymer material (6) after curing of the resin system, in particular so that the continuous fibre bundle (4) can be removed from the structure component (1) again.

Description

Patent application

Applicant: Holy Technologies GmbH, 22547 Hamburg

Fiber-reinforced and recyclable structural component and process for its provision

The invention relates to a fiber-reinforced and recyclable structural component and a method for providing a fiber-reinforced and recyclable structural component. In addition, a use of a corresponding structural component for providing a recyclable component for a bicycle is specified. The invention can advantageously be used to produce fiber-plastic composites more sustainably and, in particular, to recycle them better.

A fiber-plastic composite (FRP for short; also fiber-reinforced plastic or fiber-reinforced plastic, FRP for short) is a material that contains reinforcing fibers and a plastic matrix. The matrix surrounds the fibers, which are bonded to the matrix by adhesive interactions. Due to the use of fiber materials, fiber-plastic composites generally have a direction-dependent elastic behavior. Without a matrix material, the high specific strengths and stiffnesses of the reinforcing fibers are usually not usable. A new construction material is only created by the appropriate combination of fiber and matrix material. A combination suitable for many areas of application is resin-bonded fiber composite materials. The best-known fiber composite plastics are glass fiber reinforced plastic (GFRP for short) and carbon fiber reinforced plastic (CFRP for short). Fiber-plastic composites generally have high specific stiffnesses and strengths. This makes them suitable materials in lightweight construction applications. Fiber-plastic composites are mainly used to produce flat structures.

A disadvantage of most known fiber-plastic composites is that they cannot be recycled, and in particular not easily. Many fiber-plastic composites cannot be recycled at all and can only be disposed of after use. The recycling methods known to date mostly rely on shredding fiber-plastic composites or components made from them, such as mechanical shredding, in order to then thermally recycle the resulting fiber-plastic composite residues. In this process, the matrix is pyrolyzed and the shredded fibers can be consolidated into a random fiber mat in an additional process step. The main disadvantage of this process is that the recycled material experiences a significant loss of mechanical properties and thus cannot be used again for the original or a similar application. This downcycling means that only newly produced fibers can be used, particularly for structural, highly stressed components. In conventional recycling processes, the fibers are always significantly shorter than the fibers originally used to manufacture the recycled component. Due to the high resource intensity that the new production of the raw material entails, reuse of the fibers and the matrix should be sought.

Based on this, the object of the present invention is to at least partially solve the problems described with reference to the prior art. In particular, a structural component and a method for its production are to be specified which contribute to increasing the sustainability and/or recyclability of fiber-reinforced components. Furthermore, in particular, the waste during the production of fiber-reinforced components is to be minimized. A further aim can be to increase the production speed in the production of recyclable fiber-reinforced components. In addition, an object can be seen in increasing the mechanical performance of fiber-reinforced components.

These objects are achieved by the features of the respective independent patent claims. Further advantageous embodiments of the solution proposed here are specified in the dependent patent claims. It should be noted that the features listed individually in the dependent patent claims can be combined with one another in any technologically reasonable manner and define further embodiments of the invention. In addition, the features specified in the patent claims are specified and explained in more detail in the description, with further preferred embodiments of the invention being presented.

A fibre-reinforced and recyclable structural component contributes to this, comprising:

- a resin system that forms a matrix,

- a fiber system with a continuous fiber bundle held in the matrix, wherein the arrangement and/or orientation of the continuous fiber bundle defines at least part of the shape of the structural component, wherein the resin system comprises at least one polymer material for the matrix, wherein the resin system is designed such that it allows depolymerization of the polymer material after curing of the resin system, in particular in order to be able to remove the continuous fiber bundle from the structural component again.

The fiber system can be formed in the manner of a textile semi-finished product provided for reinforcing the component. The fiber system can comprise a continuous fiber bundle or several continuous fiber bundles. The fiber bundles can be formed in particular in the form of rovings. The rovings can be formed, for example, from a large number of individual fibers or monofilaments or threads that have been created by twisting individual fibers or fiber bundles. The fibers can be, for example, glass fibers, carbon fibers, polymer fibers or natural fibers. The fibers are preferably carbon fibers. The continuous fiber bundle can therefore preferably be a continuous carbon fiber bundle.

The fiber-reinforced components are, for example, carbon fiber-reinforced components. In addition to carbon fiber-reinforced components, other fiber types, such as flax or aramid fibers, can also be considered. The textile semi-finished products used to reinforce the materials are in particular fiber bundles in the form of rovings made of continuous fiber strands that are not cut off within the component.

In order to ensure that shorter fibers can be recycled in larger components, a large number of fiber strands are joined in the longitudinal direction. A total of 20 fiber strands per component should not be exceeded.

In terms of ecological and economic marginal benefit, this process can be used to produce fiber-reinforced components that have a component size of at least 5x5x10 cm [centimeters] and a thickness of at least 2 fiber layers. This results in a minimum total fiber length per component of 8 m [meters] with an exemplary fiber spacing of 2.5 mm [millimeters].

The term “continuous fiber” or “continuous fiber bundle” is not to be understood as meaning that the fibers have an infinite length or are actually endless. Rather, there is always a certain limitation to the length of the fiber due to the size of the component, such as in the example given above a total fiber length of 8 m [meters] in a component of 5x5x10 cm [centimeters]. The term “continuous fiber” or “continuous fiber bundle” is to be understood as meaning that understand that the fiber bundles in the component are arranged and designed in such a way that the component has the longest possible fiber lengths, which can later be recovered non-destructively (without affecting the fiber) in a recycling process. It is not necessary for there to be only one continuous fiber in a component for it to be considered a continuous fiber, although such an embodiment would be desirable in principle. Rather, it is necessary that the design of the fiber arrangement in the component is optimized in such a way that the fibers arranged in the component are as long as possible and suitable for financially attractive recycling. In particular, unnecessary interruptions of fibers in fibers in continuous fibers or in continuous fiber bundles are avoided or prevented. Preferably, there are a large number of deflections of continuous fibers in the component, which make it possible to arrange relatively long fibers in the component, which in this sense can be understood as continuous fibers or as continuous fiber bundles.

In a particularly advantageous manner, it can be provided that the continuous fiber bundle has a first section and a second section, wherein the first section and the second section are connected via the deflection or (in the case of several deflections) via one of the deflections. The first section and the second section can in particular be arranged straight. The first section and the second section can be aligned at an angle or parallel to one another. It is preferred if the first section and the second section are aligned substantially parallel to one another. The first section and the second section can be arranged specifically along load paths that run at an angle to one another, wherein the first section and the second section can be aligned at an angle to one another.

According to the invention, it can be provided that the continuous fiber bundle has a change in direction of the continuous fiber bundle in the area of the one or more deflections. For this purpose, the continuous fiber bundle can have a deflection angle in the area of the deflection. The deflection angle of at least one of the deflections can preferably be greater than 90° (particularly preferably greater than 135°) and/or less than 270° (particularly preferably less than 225°). According to the invention, it is preferred if several of the deflections and particularly preferably all of the deflections have a deflection angle greater than 90°, particularly preferably greater than 135°, and/or less than 270°, particularly preferably less than 225°. Advantageously, it can be provided that the matrix is formed as a solid material between the first section and the second section. The matrix has no cavity in the area between the first section and the second section. This further improves stability. With this design, since there is no cavity between the first and second sections, no goods to be stored can be introduced into a cavity at this point.

These are often flat components with two- or three-dimensional curvatures with, if necessary, individually adapted fiber directions that change within the component. Components can also have a different geometric nature. For example, components can also have flat or hollow cross-sections as well as bionic structures or bionic supporting structures. Continuous fiber bundles can be arranged in the component in such a way that the fiber directions in the continuous fiber bundles are adapted to the respective shape of the component. In addition, components can have integrated interfaces to other components. For example, so-called inserts can be integrated into the components, which enable connection to other components. Such insert components can, for example, be metal components that are integrated into the matrix of the component and which, for example,

Provide screwing points for connection to other components. Continuous fiber bundles are preferably arranged in the component in such a way that the transfer of forces from the insert components to the continuous fiber bundles is promoted. In particular, insert components can be arranged between individual strands of continuous fiber bundles.

In order to ensure recyclability, the invention focuses exclusively on resin systems that allow depolymerization after the component has hardened in order to be able to completely separate the fibers from the matrix in the recycling process. Depolymerization can be achieved, for example, by thermally or chemically splitting or dissolving the polymer material into shorter polymers or monomers. This makes the polymer material liquid or at least plastically deformable to such an extent that the continuous fibers of the continuous fiber bundles can be removed from the polymer material without destroying the fibers.

This can advantageously contribute to increasing the recyclability of fiber-reinforced components. In particular, it makes it possible to remove continuous fibers from the material. One or more of the following systems can be used as a resin system or matrix system:

- Recyclable thermosets such as epoxy resins;

- Thermoplastics; or

- Vitrimers.

Of particular note here is the group of vitrimers, which have particular advantages as a resin system or matrix system for the component described here.

Vitrimers are a class of plastics derived from classic thermosets and have strong similarities to them. They are made up of covalent networks that can change their topology through thermally activated bond exchange reactions. Vitrimers are strong glass formers. At high temperatures they flow and behave like a viscoelastic fluid. At low temperatures the exchange reactions are immeasurably slow ("frozen") and the vitrimers behave like classic thermosets. Due to the fact that vitrimers behave like liquids at high temperatures, they are particularly suitable for the components described here. Continuous fibers or continuous fiber bundles can be recycled particularly well from a matrix material.

Matrix materials which, for example, change from a solid phase to a liquid or highly viscous phase at a limit temperature above 80°C are preferred.

A matrix material is particularly preferred which only undergoes a transition to the liquid or highly viscous phase after a certain period of time in which the limit temperature acts on the matrix material (“exposure time”). It is also advantageous if additional properties and/or influences must be added in order to cause the matrix to dissolve. These are particularly preferred influences which do not act on the component under normal conditions of use of the component in order to avoid undesirable dissolution of the matrix. This can include, for example, the effect of a mild acid in combination with the introduction of heat, for example acetic acid.

Another preferred group of matrix materials are, for example, vitrimer resins. Such materials are an intermediate stage between thermosets and thermoplastics and can be dissolved, for example, under the influence of diethylenetriamine or propylamine at 60 °C to 100 °C. The patented process enables fiber-reinforced components to be manufactured without creating fiber waste when cutting and trimming the component, or when inserting openings in the semi-finished fiber product or hardened component. Preferably, after the composite of continuous fiber bundles and matrix material has been manufactured, no further processing takes place in the described component that could cause fibers of the continuous fiber bundles arranged in the component to be severed. In particular, preferably no material-removing processing steps are carried out that affect areas of the component in which the continuous fiber bundles are located.

One aspect of the invention is that inserts can be incorporated into the fiber semi-finished product in a way that is appropriate for the fibers, and thus a subsequent breakthrough through mechanical processing is no longer necessary. When inserting inserts, their effect on the recovery of the fibers from the continuous fiber bundles is particularly preferably taken into account. In particular, inserts and continuous fiber bundles are preferably aligned with one another in the component in such a way that, on the one hand, force can be transmitted from the inserts to the continuous fiber bundles and vice versa as desired, and, on the other hand, the inserts do not hinder the removal of continuous fibers. In design variants, inserts and continuous fiber bundles are, for example, incorporated into the matrix material in such a way that inserts can be removed after the matrix has dissolved without disturbing the position of the fibers, so that the continuous fibers can be removed after the inserts have been removed. In other design variants, continuous fibers and inserts are, for example, introduced into the matrix material in such a way that, after the matrix has been dissolved, continuous fiber bundles can be removed without the continuous fibers colliding with the inserts or being blocked by the inserts.

This can advantageously help to minimize waste during the production of fiber-reinforced components.

The invention can advantageously contribute to increasing the production speed in the manufacture of recyclable fiber-reinforced components. A manufacturing method designed for automated production that minimizes manual intervention and eliminates essential process steps such as cutting the fibers, trimming the semi-finished product and the finished component can achieve significant savings in process time. The use of the continuous fiber bundles described here can therefore be used in an optimized overall process. Savings in process time can partially compensate for additional costs that arise from the use of continuous fiber bundles.

A further aspect of the invention is the realization of fiber orientations and courses that are specifically adapted to the component and non-linear fiber arrangements through the manufacturing process with uncut fibers. The free manipulation of the fibers enables optimized, fiber-appropriate load introduction and distribution. This can advantageously contribute to increasing the mechanical performance of fiber-reinforced components.

According to an advantageous embodiment, it is proposed that the polymer material is such that after curing of the resin system it can be thermally and/or chemically dissolved into at least one monomer or shorter polymers.

According to a further advantageous embodiment, it is proposed that the continuous fiber bundle has a length of at least 5 m, preferably a length in the range of 5 m to 10,000 m.

According to a further advantageous embodiment, it is proposed that the continuous fiber bundle runs with one or more deflections and/or with one or more turns in the structural component.

According to a further advantageous embodiment, it is proposed that only a single continuous fiber bundle runs in at least one or more layers of the structural component.

Preferably, several layers with a continuous fiber bundle or a partial area of the continuous fiber bundle can be arranged one above the other. In this context, it can be provided that the continuous fiber bundles or partial areas of the continuous fiber bundle in layers lying one above the other are aligned differently to one another.

According to a further aspect, a method for providing a fiber-reinforced and recyclable structural component is provided, comprising at least the following steps: a) providing a continuous fiber bundle, b) arranging and/or aligning the continuous fiber bundle, c) Surrounding the arranged and/or aligned continuous fiber bundle with a polymer material to form a matrix for holding the continuous fiber bundle, wherein the polymer material is provided in such a way that it can be thermally and/or chemically broken down into shorter polymers or monomers and thus completely separated from the fiber bundle.

To carry out the method, steps a), b) and c) can be carried out, for example, at least once and/or repeatedly in the order given. Furthermore, steps a), b) and c), in particular steps a) and b), can be carried out at least partially in parallel or simultaneously.

According to an advantageous embodiment, it is proposed that the method is carried out to produce a structural component described here. The method can be carried out to produce a structural component described here.

According to an advantageous embodiment, it is proposed that the method further comprises the following steps: d) thermal and/or chemical dissolution of the matrix, e) removal and/or collection of the continuous fiber bundle.

The details, features and advantageous embodiments discussed in connection with the structural component can also occur in the process presented here and vice versa. In this respect, full reference is made to the explanations there for a more detailed characterization of the features.

According to a further aspect, a use of a structural component described here for providing a recyclable component for a bicycle is specified.

The details, features and advantageous embodiments discussed in connection with the structural component and/or the method can also occur in the use presented here and vice versa. In this respect, full reference is made to the explanations there for a more detailed characterization of the features.

The solution presented here and its technical environment are explained in more detail below using the figures. It should be noted that the invention is shown embodiments. In particular, unless explicitly stated otherwise, it is also possible to extract partial aspects of the facts explained in the figures and combine them with other components and/or findings from other figures and/or the present description. They show schematically:

Fig. 1: an example of a structure of a structural component described here.

Fig. 2: an exemplary sequence of a method described here.

Fig. 3: an example of an embodiment of an aspect of the method.

Fig. 4: an example of another embodiment of an aspect of the method.

Fig. 5: an example of an embodiment of another aspect of the

procedure.

Fig. 6: an example of an embodiment of another aspect of the

procedure.

Fig. 1 shows schematically an example of a structure of a fiber-reinforced and recyclable structural component 1 described here.

The structural component 1 has a resin system that forms a matrix 2, as well as a fiber system 3 with a continuous fiber bundle 4 held in the matrix 2. The arrangement and/or orientation of the continuous fiber bundle 4 helps to define at least part of the shape 5 of the structural component 1. The resin system comprises at least one polymer material 6 for the matrix 2. The resin system is designed in such a way that it allows depolymerization of the polymer material 6 after the resin system has hardened. This advantageously contributes to the continuous fiber bundle 4 being able to be removed from the structural component 1 and, if necessary, reused or recycled.

The polymer material 6 can be designed in such a way that after curing of the resin system, shorter polymers or monomers dissolve thermally and/or chemically and can thus be completely separated from the fiber bundle. The continuous fiber bundle 4 can have a length of at least 5 m. For example, the continuous fiber bundle 4 can have a length in the range of 5 m to 10,000 m.

The continuous fiber bundle 4 can run with one or more deflections 7 and/or with one or more turns in the structural component 1 or can be arranged and/or aligned accordingly.

As shown in Fig. 1, the continuous fiber bundle 4 has first sections 19 and second sections 20, which are each connected via a deflection 7, 7'. The deflections 7, 7' can be obtained by arranging and/or aligning the continuous fiber bundle 4 with one or more deflections 7, 7' of the continuous fiber bundle. The deflections 7, 7' can be formed with the deflection rollers 14 described below.

The first section 19 and the second section 20 are arranged straight. The first and second sections 19, 20 connected via the deflection 7 are aligned parallel to one another.

The continuous fiber bundle 4 has a change in direction of the continuous fiber bundle 4 in the area of the deflection 7, 7'. For this purpose, the continuous fiber bundle 4 has a deflection angle in the area of the deflection 7, 7'. The deflection angle of the deflection 7 is 180° in the embodiment shown. The continuous fiber bundle comprises a further deflection 7', wherein the deflection angle of the deflection 7' is less than 180°.

Between the first section 19 and the second section 20, the matrix 2 is formed as a solid material. The matrix 2 has no cavity in the area between the first section 19 and the second section 20.

It can be seen that the structural component has a U-shaped form 5. The fiber system 3 in the polymer component is formed by a continuous fiber bundle 4, which is continuous and embedded in a polymer material as a matrix. Sections of the same continuous fiber bundle 5 extend through both legs of the U-shape 5. The continuous fiber bundle 5 has individual strands, each of which is connected to one another by deflections 7. In order to be able to extend into the two legs of the U-shape, the continuous fiber bundle 5 is folded out at a central position. This arrangement allows the continuous fiber bundle to be efficiently set up so that it is adapted to the U-shape. Fig. 2 shows an example of a process described here. The process steps a), b), c) and possibly also d) and e) can be seen, which are carried out one after the other.

The method serves to provide a fiber-reinforced and recyclable structural component 1. The sequence of steps a), b) and c) shown in blocks 110, 120 and 130 is exemplary and can be used, for example, in a regular sequence of the method.

In block 110, according to step a), a continuous fiber bundle 4 is provided. In block 120, according to step b), the continuous fiber bundle 4 is arranged and/or aligned. In block 130, according to step c), the arranged and/or aligned continuous fiber bundle 4 is surrounded with a polymer material 6 to form a matrix 2 for holding the continuous fiber bundle 4, wherein the polymer material 6 is provided in such a way that it can be thermally and/or chemically dissolved into at least one monomer and/or shorter polymers.

The method can be carried out, for example, to produce the structural component 1 shown in Fig. 1.

Optionally, in a block 140 according to a step d), the matrix 2 can be thermally and/or chemically dissolved. Furthermore, optionally, in a block 150 according to a step e), the continuous fiber bundle 4 can be removed and/or picked up.

Fig. 3 shows schematically an example of an embodiment of an aspect of the method.

Fig. 3 shows a machine 10 for forming the fiber system 3. The view of the machine 10 is from above in Fig. 3a and from the side in Fig. 3b.

The fiber system 3 is clamped by a frame 11 with two frame segments 13. To clamp or orient the continuous fiber bundle 4, the frame segments 13 are moved apart in a clamping direction 18. By means of the shown arrangement of the deflection rollers 14, which are held on the frame segments 13, several deflection areas 7 are formed in the arrangement and orientation of the continuous fiber bundle 4. Furthermore, by means of the arrangement of the deflection rollers 14 shown, several partial areas 9, 9' and 9" of the continuous fiber bundle 4 can be arranged one above the other.

It can be provided that in at least one layer 8 of the structural component 1 only a single continuous fiber bundle 4 runs.

Furthermore, several layers 8 with a continuous fiber bundle 4 or a partial area 9 of the continuous fiber bundle 4 can be arranged one above the other. The continuous fiber bundles 4 or partial areas 9 of the continuous fiber bundle 4 can be aligned differently to one another in layers 8 lying one above the other.

For example, the subregions 9, 9’ and 9” can form three exemplary layers 8.

Fig. 4 shows schematically an example of a further embodiment of an aspect of the method.

Here, a machine 10 for forming a fiber system 3 is shown, with which several layers 8 of a roving can be formed, in which the fibers are each aligned differently (here at a 90° angle to each other) and which nevertheless form a continuous fiber bundle 4. Here, for example, there are a total of four frame segments 13 of a frame 11 with deflection rollers 14, which can each be moved apart in pairs in a tensioning direction 18. A continuous continuous fiber bundle 4 runs on the deflection rollers 14 of all four frame segments 13, the partial areas 9 of which are each extended by tensioning in the tensioning direction 18, so that the continuous fiber bundle 4 is produced from a fiber feed roller.

Fig. 5 shows schematically an example of an embodiment of a further aspect of the method.

In Fig. 5, the view from above is directed to a lower forming tool 15, into which the fiber system 3 is deposited by means of the frame segments 13. For example, individual deflection rollers 14 of a frame segment 13 can be moved in a targeted manner in order to adapt the shape of the continuous fiber bundle 4 and the shape of a forming tool 15 and to deposit the continuous fiber bundle 4 in the forming tool 15. Fig. 6 shows a schematic example of an embodiment of a further aspect of the method. Fig. 6 shows the closed mold with lower part 15 and upper part 16. In addition, resin inlets 17 are shown through which the polymer material 6 can be introduced.

List of reference symbols

1 structural component

2 Matrix

3 fiber system

4 continuous fiber bundles

5 Shape

6 Polymer material

7, 7' redirection

8 layer

9 Subsection

10 Machine

11 frames

12 Fiber feed roller

13 Frame segment

14 Deflection pulley

15 lower mold

16 upper mold

17 Resin inlet

18 Clamping direction

19 first section

20 second section

Claims

Patent claims

1. Fiber-reinforced and recyclable structural component (1), comprising:

- a resin system forming a matrix (2),

- a fiber system (3) with a continuous fiber bundle (4) held in the matrix (2), wherein the arrangement and/or orientation of the continuous fiber bundle (4) defines at least part of the shape (5) of the structural component (1), wherein the resin system comprises at least one polymer material (6) for the matrix (2), wherein the resin system is designed such that it allows depolymerization of the polymer material (6) after curing of the resin system, in particular in order to be able to remove the continuous fiber bundle (4) from the structural component (1) again.

2. Structural component (1) according to claim 1, wherein the polymer material (6) is such that after curing of the resin system, shorter polymers or monomers can be dissolved thermally and/or chemically.

3. Structural component (1) according to claim 1 or 2, wherein the continuous fiber bundle (4) has a length of at least 5 m, preferably a length in the range of 5 m to 10,000 m.

4. Structural component (1) according to one of the preceding claims, wherein the continuous fiber bundle (4) runs with one or more deflections (7, 7') and/or with one or more turns in the structural component (1).

5. Structural component (1) according to claim 4, characterized in that the continuous fiber bundle (4) has a first section (19) and a second section (20), wherein the first section (19) and the second section (20) are connected via the deflection (7, 7') or one of the deflections (7, 7').

6. Structural component (1) according to claim 5, characterized in that the first section (19) and the second section (20) are arranged straight.

7. Structural component (1) according to one of claims 4 to 6, characterized in that the continuous fiber bundle (4) in the region of the one or more deflections (7, 7') each has a change in direction of the continuous fiber bundle (4).

8. Structural component (1) according to one of claims 5 to 7, characterized in that between the first section (19) and the second section (20) the matrix (2) is formed as a solid material.

9. Structural component (1) according to one of the preceding claims, wherein only a single continuous fiber bundle (4) runs in at least one layer (8) of the structural component (1).

10. Structural component (1) according to claim 9, wherein a plurality of layers (8), each with a continuous fiber bundle (4) or a partial region (9) of the continuous fiber bundle (4), are arranged one above the other, and wherein the continuous fiber bundles (4) or partial regions (9) of the continuous fiber bundle (4) in superimposed layers (8) are aligned differently to one another.

11. Method for providing a fiber-reinforced and recyclable structural component (1), comprising at least the following steps: a) providing a continuous fiber bundle (4), b) arranging and/or aligning the continuous fiber bundle (4), c) surrounding the arranged and/or aligned continuous fiber bundle (4) with a polymer material (6) to form a matrix (2) for holding the continuous fiber bundle (4), wherein the polymer material (6) is provided such that it can be thermally and/or chemically dissolved into at least one monomer and/or short polymer chains.

12. Method according to claim 11, characterized in that the arrangement and/or alignment of the continuous fiber bundle (4) is carried out with one or more deflections (7, 7') of the continuous fiber bundle, wherein the one or more deflections (7, 7') are formed by means of deflection rollers (14).

13. The method according to claim 11 or 12, wherein the method for producing a structural component (1) is carried out according to one of claims 1 to 10. Method according to one of claims 11 to 13, further comprising the following steps: d) thermal and/or chemical dissolution of the matrix (2), e) removal and/or collection of the continuous fiber bundle (4). Use of a structural component (1) according to one of claims 1 to 10 for providing a recyclable component for a bicycle.