A spinning preparation machine includes a consolidating means for producing a roving having a protective twist from a fiber bundle, a drafting system arranged upstream of the consolidating means, a winding device arranged downstream of the consolidating means, and a movably mounted traversing element adjacent the winding device to guide the roving being wound onto a tube. In a side view of the spinning preparation machine, the consolidating means is arranged vertically between at least one feed roller of the drafting system and the traversing element, and the feed roller and the traversing element are arranged on a same side of the consolidating means so that in operation of the spinning preparation machine, the roving experiences a change in direction after exiting the consolidating means and prior to being wound onto the tube.

A spinning preparation machine has consolidating means for producing a roving from a fiber bundle and a drafting system for drafting the fiber bundle. The drafting system is arranged upstream of the consolidating means in a transport direction of the drafting system. A guide is arranged upstream of the drafting system for guiding the fiber bundle between a container providing the fiber bundle and the drafting system. The guide has a feed segment opposite from the drafting system and a delivery segment facing the drafting system. The spinning preparation machine has a winding device for winding the roving onto a tube, and a tube transport device for providing empty tubes and/or for removing tubes loaded with roving by the winding device. The tube transport device has a conveyor for transporting empty tubes and/or tubes loaded with roving, wherein the conveyors are arranged at least in part between the feed segment of the guide and the drafting system.

A spinning preparation machine has consolidating means for producing a roving from a fiber bundle and a drafting system for drafting the fiber bundle. The drafting system is arranged upstream of the consolidating means in a transport direction of the drafting system. A guide is arranged upstream of the drafting system for guiding the fiber bundle between a container providing the fiber bundle and the drafting system. The guide has a feed segment opposite from the drafting system and a delivery segment facing the drafting system. The spinning preparation machine has a winding device for winding the roving onto a tube, and a tube transport device for providing empty tubes and/or for removing tubes loaded with roving by the winding device. The tube transport device has a conveyor for transporting empty tubes and/or tubes loaded with roving, wherein the conveyors are arranged at least in part between the feed segment of the guide and the drafting system.

The present invention provides a production process characterized in that a false twisting process is added between a spinning process and a winding process so that yarn slivers undergo excessive pre-torsion in an axial direction and twists which are same in quantity but different in twisting direction are generated on the yarn slivers. Absorption of glucose-containing sulfur dyestuff is performed in a dyeing process. An ammonia removal process is performed in a high-temperature and high-pressure tank so that residual ammonia in a fabric is evaporated. The evaporated ammonia is collected and then fed back to a mercerizing process for continuous use. The present invention also provides a production line including a spinning unit having a false twisting device, a dyeing unit configured to realize the dyeing process, and a liquid ammonia finishing unit consisting of a fabric mercerizing device, an ammonia removal device, an ammonia recycling device and a controller.

A method, system, and resulting linear fibrous formation are provided wherein a supporting linear formation defines a core that is transported through a spinning chamber. A coating of polymeric nanofibers enveloping the supporting linear formation in the spinning chamber. The coating of polymeric nanofibers comprises a flat stripe wound around the core into a helical form, the flat stripe created from a hollow electrically neutral nanofibrous plume generated in a spinning space above a spinning electrode during spinning by AC electric voltage in the spinning chamber.

A method, system, and resulting linear fibrous formation are provided wherein a supporting linear formation defines a core that is transported through a spinning chamber. A coating of polymeric nanofibers enveloping the supporting linear formation in the spinning chamber. The coating of polymeric nanofibers comprises a flat stripe wound around the core into a helical form, the flat stripe created from a hollow electrically neutral nanofibrous plume generated in a spinning space above a spinning electrode during spinning by AC electric voltage in the spinning chamber.

A device and a corresponding method produce a knitted fabric with a knitting machine and a roving drawing and strengthening unit. The device has a roving supply unit with a roving, a stretching unit linked to the roving supply unit, and a spinning nozzle device provided downstream from the stretching unit in a roving conveying direction of the device forming a fiber strengthening segment by applying compressed air. An end thread gripping roller pair rotatable in opposite directions is provided downstream from the spinning nozzle device in the roving conveying direction delimiting the fiber strengthening segment. The device has a blow-off device for blowing off the spinning nozzle device and/or the stretching unit and a suction device for suctioning off loose fibers from the spinning nozzle device and/or the stretching unit. The suction device and the blow-off device are interconnected in a blow-off and suction system.

Nanofiber based sensors are described that can be used to detect analytes in biological or non-biological contexts. Each sensor includes at least two nanofiber yarns that are spaced apart from one another so as to avoid electrical (or physical) contact. Each nanofiber yarn of the nanofiber sensor includes a sensing region that is in electrical contact with the rest of the corresponding nanofiber yarn. The sensing regions of the at least two nanofibers are treated with complementary sensing agents so that when the sensing regions (and the corresponding sensing agents) are exposed to the analyte to be detected, an electrical response is detected. This response is then communicated through one or more of the nanofiber yarns for interpretation by a processor.

Nanofiber based sensors are described that can be used to detect analytes in biological or non-biological contexts. Each sensor includes at least two nanofiber yarns that are spaced apart from one another so as to avoid electrical (or physical) contact. Each nanofiber yarn of the nanofiber sensor includes a sensing region that is in electrical contact with the rest of the corresponding nanofiber yarn. The sensing regions of the at least two nanofibers are treated with complementary sensing agents so that when the sensing regions (and the corresponding sensing agents) are exposed to the analyte to be detected, an electrical response is detected. This response is then communicated through one or more of the nanofiber yarns for interpretation by a processor.

Systems for controlling the movement of threads in systems for treating threads for carpets. Disclosed is a device for guiding a strand of at least two threads on a transporter structure, characterized in that the device employs a mechanism for generating false twists between the at least two threads of the strand.