Die Erfindung betrifft ein Verfahren zum Betreiben einer Offenend-Rotorspinnmaschine (1), die eine Vielzahl von Arbeitsstellen (4) aufweist, welche jeweils über eine Spinnvorrichtung (5) mit einem unterdruckbeaufschlagbaren Rotorgehäuse (21), in dem ein Spinnrotor (23) mit hoher Drehzahl umläuft, zur Fertigung eines Fadens (16) sowie eine Spulvorrichtung (7) zur Herstellung einer Kreuzspule (18) verfügen, wobei die Verbindung der Arbeitsstellen zu einer zentralen Unterdruckversorgung abschaltbar ist.

Erfindungsgemäß ist vorgesehen, dass das Beaufschlagen des Rotorgehäuses mit Unterdruck auf die Spinnvorrichtungen, die Garn produzieren sowie die Spinnvorrichtungen, die neu anspinnen, beschränkt wird.

This disclose relates to dope for spinning lyocell including cotton linter pulp and an aqueous solution of N-methylmorpholine-N-oxide (NMMO), a method for manufacturing lyocell filament fiber using the dope, lyocell filament fiber manufactured by the method, a method for manufacturing lyocell staple fiber using the dope, and lyocell staple fiber obtained by the manufacturing method. According to the present invention, fiber that exhibits a low orientation degree and fibrillation degree, and a high elongation, and thus may be applied for fiber for high grade clothing, may be provided without conducting additional processes.

A spinning unit includes a drafting section (2) adapted to draft a fiber bundle (F), a spinning section (3) adapted to twist the fiber bundle (F) drafted by the drafting section (2), a pneumatic actuator (38) adapted to move the spinning section (3) in a direction away from the drafting section (2), and an elastic member (39) adapted to move the spinning section (3) in a direction towards the drafting section (2).

A spinning machine (100) includes a drafting section (2) adapted to draft a fiber bundle (F), and a spinning section (3) adapted to twist a fiber bundle (F) drafted by the drafting section (2). The spinning section (3) includes a passage (FP) adapted to guide the fiber bundle (F) and prevent accumulation of the fiber bundle (F) at a gap formed between the drafting section (2) and the spinning section (3).

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.

Eine Maschine zur Herstellung von Maschenware mit einer Vielzahl von Maschenbildungselementen und mit mindestens einer Maschenbildungsstelle (15, 15.1, 15.2, 15.3), der eine Spinneinrichtung (12, 12.1, 12.2, 12.3) zugeordnet ist, die jeweils aus einem Vorgarn (VG) einen Faserverband (FB) oder ein Garn herstellt und dieses den Maschenbildungselementen (14) zuführt, wobei jede Spinneinrichtung (12, 12.1, 12.2, 12.3) über separate Antriebseinrichtungen (30, 31, 30.1, 31.1, 30.2, 31.2, 30.3, 31.3) verfügt, die derart ansteuerbar sind, dass mit jeder Spinneinrichtung (12, 12.1, 12.2, 12.3) aus dem Vorgarn (VG) ein Faserverband (FB) oder ein Garn variabler Dicke herstellbar und den Maschenbildungselementen (14) zuführbar ist.

A yarn producing apparatus 1 is an apparatus for producing carbon nanotube (CNT) yarn Y by aggregating CNT fibers F and includes a front roller 3 configured to continuously draw the CNT fibers F from at least one CNT forming substrate S, a yarn producing unit 4 configured to aggregate the CNT fibers F drawn by the front roller 3, and a status monitor (yarn thickness detecting sensor 6) configured to monitor a state of the CNT fibers F drawn from the CNT forming substrate S, or the CNT yarn Y

A spinning unit 1 includes a draft device 5, a spinning device 6, a tension stabilizing device 8, a winding device 9, and a yarn defect detecting device 7. The draft device 5 drafts a fiber bundle F. The spinning device 6 produce a spun yarn Y from the fiber bundle F drafted by the draft device 5. The tension stabilizing device 8 stabilizes tension of the spun yarn Y produced by the spinning device 6. The winding device 9 winds a package 91 of the spun yarn Y fed from the tension stabilizing device 8. The yarn defect detecting device 7 can detect a yarn defect in the spun yarn Y. The yarn defect detecting device 7 is arranged between the spinning device 6 and the tension stabilizing device 8.