Abstract: A method produces a flat semi-finished product from a fiber composite material that contains individual carbon fibers, carbon fiber bundles, or a mixture thereof in a defined anisotropic fiber orientation and a thermoplastic matrix material. The anisotropy of the carbon fibers is created in a carding process using the high orientability of admixed non-carbon textile fibers, at least some of the non-carbon textile fibers being thermoplastic, and the carbon fibers having been isolated from waste or used parts. The flat fibrous web which is produced by a carding process and which has a specific orientation of the carbon fibers in the longitudinal direction is compressed into a sheet material under the effect of heat. This enables the use of carbon fibers, for example from production waste, as reinforcing fibers, whereby a less expensive raw material is provided and the carbon fibers are contained in the waste materials are recycled.

Abstract: A method produces a flat semi-finished product from a fiber composite material that contains individual carbon fibers, carbon fiber bundles, or a mixture thereof in a defined anisotropic fiber orientation and a thermoplastic matrix material. The anisotropy of the carbon fibers is created in a carding process using the high orientability of admixed non-carbon textile fibers, at least some of the non-carbon textile fibers being thermoplastic, and the carbon fibers having been isolated from waste or used parts. The flat fibrous web which is produced by a carding process and which has a specific orientation of the carbon fibers in the longitudinal direction is compressed into a sheet material under the effect of heat. This enables the use of carbon fibers, for example from production waste, as reinforcing fibers, whereby a less expensive raw material is provided and the carbon fibers are contained in the waste materials are recycled.

Abstract: A fiber-based carrier structure is made of fractions of industrially produced reinforcing fibrous materials, which contains endless fibers in a tangled arrangement as a first reinforcing fiber component and which contains endless fiber bundles as a second reinforcing fiber component. The fiber-based carrier structure further has a pore system. Accordingly, the endless individual fibers and the endless fiber bundles are used as a mixture preferably in an isotropic tangled arrangement to produce a fiber-based carrier structure, the pore system of which is an open-cell pore system and is openly accessible from outside. The fiber-based carrier structure enables the absorption of liquids and/or solid particles by the selection of a defined mixture ratio of endless fiber bundles and endless individual fibers. A capacity to be impregnated with and the capacity to absorb liquid and/or solid powdery materials can be set by the mixture ratio.

Abstract: Device for mechanically splitting finite textile fiber bundles, comprising n individual fibers (n?2) in fiber bundles having less than n individual fibers and/or individual fibers, characterized in that in a milling chamber that is closed off from the outside and that has one or more dead spaces of at least 10% of the milling chamber volume and in which one or more rotating striking elements operate in a non-cutting manner and so as to reduce load peaks and at a rotational speed that can be adapted to the material but that is at least 200 r.p.m., the material is adjustably input in different amounts in batches, treated for an adjustable duration, and then discharged again from the milling chamber.

Abstract: The present invention relates to a method for the continuous production of laid staple fiber fabrics with aligned fiber orientation, in which method the laid fabrics are produced by continuous plaiting down of carded fiber web at defined laying angles onto a synchronized transport belt (1), wherein the carding machine (2) and plaiting means (3) arranged downstream of it are arranged at an acute angle with respect to the advancing direction of the transport belt. Said laid staple fiber fabrics are used for producing high-strength fiber-reinforced plastic composites, as are used in wind power plants, aircraft construction and the automotive industry. In particular in the loading direction, said composites have high composite strengths and rigidities, to which end a defined fiber orientation is required. In addition to a defined orientation of the finite fibers, the laid fabrics also have a defined mass per unit area.

Abstract: Device for mechanically splitting finite textile fiber bundles, comprising n individual fibers (n?2) in fiber bundles having less than n individual fibers and/or individual fibers, characterized in that in a milling chamber that is closed off from the outside and that has one or more dead spaces of at least 10% of the milling chamber volume and in which one or more rotating striking elements operate in a non-cutting manner and so as to reduce load peaks and at a rotational speed that can be adapted to the material but that is at least 200 r.p.m., the material is adjustably input in different amounts in batches, treated for an adjustable duration, and then discharged again from the milling chamber.

Abstract: A method produces a flat semi-finished product from a fiber composite material that contains individual carbon fibers, carbon fiber bundles, or a mixture thereof in a defined anisotropic fiber orientation and a thermoplastic matrix material. The anisotropy of the carbon fibers is created in a carding process using the high orientability of admixed non-carbon textile fibers, at least some of the non-carbon textile fibers being thermoplastic, and the carbon fibers having been isolated from waste or used parts. The flat fibrous web which is produced by a carding process and which has a specific orientation of the carbon fibers in the longitudinal direction is compressed into a sheet material under the effect of heat. This enables the use of carbon fibers, for example from production waste, as reinforcing fibers, whereby a less expensive raw material is provided and the carbon fibers are contained in the waste materials are recycled.

Abstract: A method produces pellets from fiber composite materials suitable for further processing in a plastics finishing method. The pellets contain individual carbon fibers, carbon fiber bundles, or a mixture thereof and at least one thermoplastic matrix material. The carbon fibers, carbon fiber bundles, or a mixture thereof are isolated from waste or used parts that contain carbon fiber, laid flat together with the thermoplastic matrix material, compressed into a sheet material under the effect of heat, and subsequently cooled and comminuted into pellets, platelets, or chips. This enables the use of carbon fibers, from production waste components, as reinforcing fibers, whereby an inexpensive raw material is provided and the carbon fibers that are contained in the waste materials are recycled. The final carbon fibers are brought into a pourable and readily meterable form and can be used as raw materials for extrusion or injection molding for example.

Abstract: The present invention relates to a method for the continuous production of laid staple fibre fabrics with aligned fibre orientation, in which method the laid fabrics are produced by continuous plaiting down of carded fibre web at defined laying angles onto a synchronized transport belt (1), wherein the carding machine (2) and plaiting means (3) arranged downstream of it are arranged at an acute angle with respect to the advancing direction of the transport belt. Said laid staple fibre fabrics are used for producing high-strength fibre-reinforced plastic composites, as are used in wind power plants, aircraft construction and the automotive industry. In particular in the loading direction, said composites have high composite strengths and rigidities, to which end a defined fibre orientation is required. In addition to a defined orientation of the finite fibres, the laid fabrics also have a defined mass per unit area.