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 polyurethane based filament winding resin reaction mixture, a resin bath and a filament winding apparatus are set forth. The reaction mixture comprises an isocyanate component including one or more isocyanates and an isocyanate-reactive component including from 5 wt % to 95 wt % of one of more polyols having a number acerage molecular weight from 50 g/mol to 8,000 g/mol, from 2 wt % to 30 wt % of one or more propane based triols, and from 1 wt % to 15 wt % of one or more trimester-phosphates, based on the total weight of the isocyanate-reactive component. A ratio of a total weight of the one or more propane based triols to a total weight of the one or more trimester-phosphates is between 1.1 and 5.0.

A polyurethane based filament winding resin reaction mixture, a resin bath and a filament winding apparatus are set forth. The reaction mixture comprises an isocyanate component including one or more isocyanates and an isocyanate-reactive component including from 5 wt % to 95 wt % of one of more polyols having a number acerage molecular weight from 50 g/mol to 8,000 g/mol, from 2 wt % to 30 wt % of one or more propane based triols, and from 1 wt % to 15 wt % of one or more trimester-phosphates, based on the total weight of the isocyanate-reactive component. A ratio of a total weight of the one or more propane based triols to a total weight of the one or more trimester-phosphates is between 1.1 and 5.0.

A method optimizes production of a rotor spinning machine having a plurality of identical spinning units, with each spinning unit having a spinning rotor driven by a rotor drive at a rotor speed to produce yarn at a delivery speed. A permissible range with a minimum delivery speed and a maximum delivery speed for the delivery speed of the spinning units is specified. Operation of the spinning units is started with a starting delivery speed within the permissible range. Current production capacity of the spinning units or the rotor spinning machine is continuously calculated. Current delivery speed of the yarn is regulated as a function of the current production capacity in such a manner that a maximum production capacity is achieved. A rotor spinning machine in accordance with method is also provided.

A method optimizes production of a rotor spinning machine having a plurality of identical spinning units, with each spinning unit having a spinning rotor driven by a rotor drive at a rotor speed to produce yarn at a delivery speed. A permissible range with a minimum delivery speed and a maximum delivery speed for the delivery speed of the spinning units is specified. Operation of the spinning units is started with a starting delivery speed within the permissible range. Current production capacity of the spinning units or the rotor spinning machine is continuously calculated. Current delivery speed of the yarn is regulated as a function of the current production capacity in such a manner that a maximum production capacity is achieved. A rotor spinning machine in accordance with method is also provided.

In the case of a textile machine (1), in particular a spinning machine or winder, comprising a plurality of adjacently arranged workstations (3), which are combined to form multiple sections (2) and each include multiple communication-capable units, wherein the sections (2) each comprise a section control system (13), and wherein the communication-capable units of the workstations (3) of a section (2) are connected to a section bus (15, 16) for communication with the section control system (13), the sections (2) each comprise at least two section busses (15, 16) connected to the section control system (13). A first portion of the communication-capable units of the workstations (3) is connected to a first one (15) of the at least two section busses (15, 16) and a second portion of the communication-capable units of the workstations (3) is connected to a second one (16) of the at least two section busses (15, 16). In the case of a corresponding method for controlling such a textile machine (1), a first portion of the communication-capable units of the workstations (3) communicates via a first one (15) of the at least two section busses (15, 16) with the section control system (13) and/or further communication-capable units of the workstations (3), and a second portion of the communication-capable units communicates via a second one (16) of the at least two section busses (15, 16) with the section control system (13) and/or further communication-capable units of the workstations (3).

In the case of a textile machine (1), in particular a spinning machine or winder, comprising a plurality of adjacently arranged workstations (3), which are combined to form multiple sections (2) and each include multiple communication-capable units, wherein the sections (2) each comprise a section control system (13), and wherein the communication-capable units of the workstations (3) of a section (2) are connected to a section bus (15, 16) for communication with the section control system (13), the sections (2) each comprise at least two section busses (15, 16) connected to the section control system (13). A first portion of the communication-capable units of the workstations (3) is connected to a first one (15) of the at least two section busses (15, 16) and a second portion of the communication-capable units of the workstations (3) is connected to a second one (16) of the at least two section busses (15, 16). In the case of a corresponding method for controlling such a textile machine (1), a first portion of the communication-capable units of the workstations (3) communicates via a first one (15) of the at least two section busses (15, 16) with the section control system (13) and/or further communication-capable units of the workstations (3), and a second portion of the communication-capable units communicates via a second one (16) of the at least two section busses (15, 16) with the section control system (13) and/or further communication-capable units of the workstations (3).