A machine for making covered elastic yarns, including a plurality of covering units, where each of the covering units has a spool for feeding an elastic yarn, a system for feeding a non-elastic yarn, a member for tensioning the covered elastic yarn and a bobbin for collecting the covered elastic yarn, where the system for feeding the non-elastic yarn has a microspindle which rotates about an axis and at least one bobbin for feeding the non-elastic yarn separated by and arranged upstream of the microspindle along the sliding path of the non-elastic yarn and arranged outside the rotation axis of the microspindle, the microspindle including a channel which is coaxial to the rotation axis for the passage of the elastic yarn.

A machine for making covered elastic yarns, including a plurality of covering units, where each of the covering units has a spool for feeding an elastic yarn, a system for feeding a non-elastic yarn, a member for tensioning the covered elastic yarn and a bobbin for collecting the covered elastic yarn, where the system for feeding the non-elastic yarn has a microspindle which rotates about an axis and at least one bobbin for feeding the non-elastic yarn separated by and arranged upstream of the microspindle along the sliding path of the non-elastic yarn and arranged outside the rotation axis of the microspindle, the microspindle including a channel which is coaxial to the rotation axis for the passage of the elastic yarn.

A wire stranding apparatus, comprising: a core wire moving mechanism configured to move a core wire in an axial direction; a spool configured to feed a wound wire by rotation; a revolving mechanism configured to revolve the spool about the core wire; a rotation driving mechanism configured to feed the wire by rotating the spool, the wire fed from the spool being spirally wound on an outer periphery of the core wire moving in the axial direction by revolution of the spool; and a control device including a wire speed obtaining unit configured to obtain a speed of the wire to be wound on the core wire and a rotation driving mechanism control unit configured to control the rotation driving mechanism such that the speed of the wire obtained by the wire speed obtaining unit has a predetermined value.

A wire stranding apparatus, comprising: a core wire moving mechanism configured to move a core wire in an axial direction; a spool configured to feed a wound wire by rotation; a revolving mechanism configured to revolve the spool about the core wire; a rotation driving mechanism configured to feed the wire by rotating the spool, the wire fed from the spool being spirally wound on an outer periphery of the core wire moving in the axial direction by revolution of the spool; and a control device including a wire speed obtaining unit configured to obtain a speed of the wire to be wound on the core wire and a rotation driving mechanism control unit configured to control the rotation driving mechanism such that the speed of the wire obtained by the wire speed obtaining unit has a predetermined value.

A multiple nozzle connection that is connectable to a central suction duct of a textile machine includes a connecting piece configured to connect to a compaction device of the textile machine or to a suction tube device that is in communication with the central suction duct. The connecting piece includes three connections, wherein at least one of the connections is closable by one of the connected compaction device or the connected suction tube device.

A multiple nozzle connection that is connectable to a central suction duct of a textile machine includes a connecting piece configured to connect to a compaction device of the textile machine or to a suction tube device that is in communication with the central suction duct. The connecting piece includes three connections, wherein at least one of the connections is closable by one of the connected compaction device or the connected suction tube device.

A textile machine comprising a plurality of workstations for processing fibres and/or threads; at least one unit through which air flows, located centrally and/or at the individual workstations; and an energy recovery device. In order to provide a textile machine having an energy recovery device which has high energy efficiency, the energy recovery device has a rotational element which: can be fluidically connected to a supply air line and/or exhaust air line of the unit; can be driven by an air flow; and is connected to a generator for electricity generation.

A textile machine comprising a plurality of workstations for processing fibres and/or threads; at least one unit through which air flows, located centrally and/or at the individual workstations; and an energy recovery device. In order to provide a textile machine having an energy recovery device which has high energy efficiency, the energy recovery device has a rotational element which: can be fluidically connected to a supply air line and/or exhaust air line of the unit; can be driven by an air flow; and is connected to a generator for electricity generation.

Graphene fibers made from a graphene film formed into an elongated fiber-like shape and composite materials made from the graphene fibers. The graphene film has amine groups formed on at least an outer surface of the graphene film and epoxide groups formed on at least one edge of the graphene film. The amine groups are formed in a functionalized area on the outer surface of the graphene film that is within about 10 microns from the at least one edge of the graphene film, or the functionalized area may extend the entire width of the graphene film. The graphene film may also have holes formed through the graphene film. The elongated fiber-like shapes may be the graphene film in a rolled spiral orientation or the graphene film in a twisted formation.

Graphene fibers made from a graphene film formed into an elongated fiber-like shape and composite materials made from the graphene fibers. The graphene film has amine groups formed on at least an outer surface of the graphene film and epoxide groups formed on at least one edge of the graphene film. The amine groups are formed in a functionalized area on the outer surface of the graphene film that is within about 10 microns from the at least one edge of the graphene film, or the functionalized area may extend the entire width of the graphene film. The graphene film may also have holes formed through the graphene film. The elongated fiber-like shapes may be the graphene film in a rolled spiral orientation or the graphene film in a twisted formation.