A reinforced substrate is provided for use in molding a composite material. The reinforced substrate has a reinforcing layer having reinforcing fibers extending in a fiber direction that is aligned in a single direction and auxiliary fibers laminated on only one surface of the reinforcing layer so as to extend in only one direction that intersects with the fiber direction. The auxiliary fibers are joined to the reinforcing fibers to hold the reinforcing layer. The auxiliary fibers have a higher tensile elongation at break than do the reinforcing fibers. The reinforcing layer is arranged with fiber bundles of large tows being aligned in an unopened state. The large tows have a higher fiber count of the reinforcing fibers than does a regular tow.

A stitched article includes a substrate and a first strand portion formed from a bundle of fibers. The substrate has a first region and a second region. The first strand portion is attached to the substrate in the first region and in the second region via a series of stitches formed with a thread and forms a first layer on the substrate. The article has a first concentration of the stitches in the first region along a first length of the strand portion and a second concentration of the stitches different than the first concentration in the second region along a second length of the first strand portion.

The present invention relates to a method of producing a ribbon comprising bamboo fibers. The method comprises positioning the fibers on a conveyor and conveying the fibers in a transport direction, interconnecting the fibers by covering the fibers with thread and/or particles of a sticky material with at least one web forming device which is positioned above and/or below the conveyor and which ejects thread and/or particles. The formed thread and/or particles attaches to the fibers and forms a web which interconnects the fibers in order to form the ribbon and/or stitching the fibres together with at least one stitching device which is configured to stitch the individual fibers together in order to form the ribbon.

The invention refers to a vehicle rim (1) with a rim body (2) made of fiber composite material, comprising a first subpreform (3) at a first axial end and a third subpreform (5) at the opposite second axial end, wherein a second subpreform (4) is arranged between the first subpreform (3) and the third subpreform (5), wherein the second subpreform (3) engages into a front connecting cavity (6) formed by the first subpreform (3) as well as also into a rear connecting cavity (7) being formed by the third subpreform (5). The invention also refers to a method for the production of a vehicle rim (1) with a rim body (2) made of fiber composite material, wherein an NCF material (19) comprising carbon fibers, glass fibers and/or aramid fibers is created respectively for the formation of a first subpreform (3) for a first axial end of the rim body (2) and of a third subpreform (5) for the opposite axial end of the rim body (2) with a connecting cavity (6, 7), respectively, wherein a second subpreform (4) made of a same or a similar NCF material (19) is inserted into the connecting cavity (6 and/or 7) and is fixed thereat.

A composite armour for a flexible pipe includes a composite profile and a reinforcement tape. The composite profile includes longitudinally oriented reinforcement fibres embedded in a polymer matrix. The reinforcement tape includes a woven tape comprising fibres impregnated with a polymer material, in such a way that the weft thread of the reinforcement tape is orthogonal to the longitudinal direction of the profile, and the warp thread is parallel to the longitudinal direction of the profile.

A textile substrate made from reinforcing fibers for the production of composite-material preforms, Including an unidirectional composite consisting of at least one flat layer of multifilament reinforcing yarns arranged alongside and parallel to one another and joined by transverse threads, whereby a nonwoven of thermoplastic polymer material is arranged on the at least one flat layer of multifilament reinforcing yarns and is adhesively bonded to the flat layer of multifilament reinforcing yarns. The textile substrate wherein the transverse threads have a core/sheath structure with a first component forming the sheath and a second component forming the core, wherein the first component has a lower melting point than the second component, the first component is a fusible thermoplastic polymer material and the multifilament reinforcing yarns arranged alongside one another are joined together via the first component of the transverse threads by meltbonding.

A stitched article includes a substrate and a first strand portion formed from a bundle of fibers. The substrate has a first region and a second region. The first strand portion is attached to the substrate in the first region and in the second region via a series of stitches formed with a thread and forms a first layer on the substrate. The article has a first concentration of the stitches in the first region along a first length of the strand portion and a second concentration of the stitches different than the first concentration in the second region along a second length of the first strand portion.

A composite structure is fabricated using a preform comprising a stack of unidirectional prepreg plies that are stitched together. During curing of the prepreg, the stitches melt and dissolve.

A composite structure is fabricated using a preform comprising a stack of unidirectional prepreg plies that are stitched together. During curing of the prepreg, the stitches melt and dissolve.

Method for producing a textile unidirectional fabric, wherein at least one planar layer of multi-filament reinforcement threads arranged parallel to each other are woven with each other over transverse threads, wherein transverse threads having core-sheath structure and titer of 10 to 40 tex are used as transverse threads, wherein transverse threads have a first component, which structures sheath, and second component, which structures core, wherein first component has lower melting temperature than second component, first component is meltable thermoplastic polymer material and, via first component of transverse threads, adjacently arranged multi-filament reinforcement threads are connected to each other by hot melting, wherein alleys are formed in unidirectional fabric by interweaving multi-filament reinforcement threads together with transverse threads, by means of which a permeability of 10 to 600 l/dm2/min can be established. Preferred embodiment relates to method for producing unidirectional fabric having fleece. Further, a fiber preform, produced from unidirectional fabric.