A method of making a cleaning-roll body having a core and a jacket on the core. The method has the steps of forming the core of a first polymer by injection molding in a first injection mold, removing the injection molded from the first mold, inserting the formed core into a second mold and overmolding the jacket on the formed core.

A method for manufacturing a foil having a variable strip geometry, which makes it possible to supply a foil that bears a complex security feature. Varying of the geometry is effected by means of a movement of a position-variable distributor rail of the extruder.

Presented are hybrid metal and fiber-reinforced polymer (FRP) composite wheels for vehicle wheel assemblies, methods for making/using such wheels, and motor vehicles equipped with such wheels. A wheel for a motor vehicle wheel assembly includes a wheel face with multiple spokes that are circumferentially spaced about and project radially outward from a central hub. The central hub rotatably attaches to the vehicle's body, e.g., via a corner module. The wheel face is fabricated, e.g., as a one-piece structure, from an FRP material. A wheel barrel, which circumscribes the wheel face, includes an annular rim that mounts thereon an inflatable tire. The wheel barrel is fabricated, e.g., as a one-piece structure, from a metallic material. Multiple overmold through holes and/or inset tabs are circumferentially spaced about the annular rim. The FRP material extends through and/or surrounds the overmold through holes/inset tabs and thereby mounts the wheel face to the wheel barrel.

Disclosed are reinforced structures. The structures are comprised of reinforced elements that have continuous fibers embedded in a matrix material. The reinforced elements are combined in a matrix material to form a desired shape of reinforced structure.

A method of manufacturing a composite rim includes following steps of: disposing a composite material on an outer surface of an air bag to form a semi-formed rim, wherein the air bag is a completely closed annular tube without any through opening on the outer surface and contains a thermal expansion material thereinside; disposing the semi-formed rim in a mold; and heating the thermal expansion material so that the thermal expansion material expands and inflates the air bag and the semi-formed rim is then solidified.

A composite wheel structure includes a single continuous fiber reinforcement layer extending axially between inner and outer ends of the wheel structure. The single fiber reinforcement layer is impregnated with different matrix materials at different axial portions of the reinforcement layer to account for specific locations where high strength or high temperature performance is needed, with other portions having different matrix materials where low temperature performance and/or low strength is sufficient. The matrix materials may be provided as separate resin films that are applied side-by-side on the single reinforcement layer, or they may be provided on a single resin film. The matrix materials may be applied to the reinforcement layer in a direct coating process. The reinforcement layer may be prepregged with the matrix materials prior to a wheel layup process, or the reinforcement layer and matrix materials may be consolidated by resin film infusion during the wheel layup process.

A method of manufacturing a bicycle component having a component body formed at least partially of a fibrous composite material in a shaping mold. A shaping area of the shaping mold which serves to shape an outer section of the component body is provided with at least one intended surface roughness. At the same time, an intentional surface roughness is provided for the outer section by means of the surface roughness of the shaping area during manufacture of the outer section, to inhibit surface imperfections of the shaped outer section.

A method of manufacturing a composite rim includes following steps of: disposing a composite material on an outer surface of an air bag to form a semi-formed rim, wherein the air bag is a completely closed annular tube without any through opening on the outer surface and contains a thermal expansion material thereinside; disposing the semi-formed rim in a mold; and heating the thermal expansion material so that the thermal expansion material expands and inflates the air bag and the semi-formed rim is then solidified.

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.

The invention is directed to a method for manufacturing a foil having a variable strip geometry, which makes it possible to supply a foil that bears a complex security feature. The varying of the geometry is effected by means of an adaptation of a melt flow of the extruder.