The present disclosure provides a ringspinning system for producing a yarn. It is provided a the ringspinning system comprising a bobbin holder for holding a bobbin from which a first filament is supplied, a drafting stage for drafting the first filament together with a second filament, which is fed to the drafting stage, and a spindle, the ringspinning system further contains at least one sensor for detecting a breakage of the first and/or second filament and/or a roving comprising the first and second filament, which roving comes out of the drafting stage, and a clamp assembly comprising a clamp for fixing the second filament in the case that the sensor detects the breakage, wherein the clamp is provided adjacent the bobbin holder. It is further provided a method for stopping the supply of filaments to a drafting stage of a ring spinning system.

A yarn spinning and/or twisting machine with multiple balls, comprising a yarn-feeding means (1), a yarn collection means for the yarn (4) with a rotation axis (V), a yarn guide (8) located between the yarn-feeding means (1) and the yarn collection means (4), means for the generation of the diameter of the ball (DB), motorised means linked to the yarn collection means (4), where the internal diameter of the yarn guide (8) is greater than the diameter of standard yarn guides (8) for each type of yarn, and smaller than 1.1 times the diameter of the ball generator (DB). Preferably, the internal diameter of the yarn guide (8) is between 0.01 and 0.9 times the diameter of the ball generator (DB). Preferably, the yarn spinning and/or twisting machine comprises several yarn guides (8, 8, 8), at least one of these with an internal diameter greater than the diameter of the standard yarn guide (8) for each type of yarn and smaller than 1.1 times the diameter of the ball generator (DB).

A yarn spinning and/or twisting machine with multiple balls, comprising a yarn-feeding means (1), a yarn collection means for the yarn (4) with a rotation axis (V), a yarn guide (8) located between the yarn-feeding means (1) and the yarn collection means (4), means for the generation of the diameter of the ball (DB), motorised means linked to the yarn collection means (4), where the internal diameter of the yarn guide (8) is greater than the diameter of standard yarn guides (8) for each type of yarn, and smaller than 1.1 times the diameter of the ball generator (DB). Preferably, the internal diameter of the yarn guide (8) is between 0.01 and 0.9 times the diameter of the ball generator (DB). Preferably, the yarn spinning and/or twisting machine comprises several yarn guides (8, 8, 8), at least one of these with an internal diameter greater than the diameter of the standard yarn guide (8) for each type of yarn and smaller than 1.1 times the diameter of the ball generator (DB).

Systems for fabricating nanofiber yarn at rates of at least 30 m/min (1.8 kilometers (km)/hour (hr)) using a false twist nanofiber yarn spinner and a false twist spinning technique are disclosed. In a false twist spinning technique, a twist is introduced to nanofibers in a strand by twisting the nanofibers at points between ends of the strand. This is in contrast to the true twist technique where one end of a strand is fixed and the opposing end of the strand is rotated to introduce the twist to intervening portions of yarn.

Systems for fabricating nanofiber yarn at rates of at least 30 m/min (1.8 kilometers (km)/hour (hr)) using a false twist nanofiber yarn spinner and a false twist spinning technique are disclosed. In a false twist spinning technique, a twist is introduced to nanofibers in a strand by twisting the nanofibers at points between ends of the strand. This is in contrast to the true twist technique where one end of a strand is fixed and the opposing end of the strand is rotated to introduce the twist to intervening portions of yarn.

Systems for fabricating nanofiber yarn at rates of at least 30 m/min (1.8 kilometers (km)/hour (hr)) using a false twist nanofiber yarn spinner and a false twist spinning technique are disclosed. In a false twist spinning technique, a twist is introduced to nanofibers in a strand by twisting the nanofibers at points between ends of the strand. This is in contrast to the true twist technique where one end of a strand is fixed and the opposing end of the strand is rotated to introduce the twist to intervening portions of yarn.

Systems for fabricating nanofiber yarn at rates of at least 30 m/min (1.8 kilometers (km)/hour (hr)) using a false twist nanofiber yarn spinner and a false twist spinning technique are disclosed. In a false twist spinning technique, a twist is introduced to nanofibers in a strand by twisting the nanofibers at points between ends of the strand. This is in contrast to the true twist technique where one end of a strand is fixed and the opposing end of the strand is rotated to introduce the twist to intervening portions of yarn.

The invention discloses a method for preparing a hollow textile with a core-spun yarn of short-staple wrapped microporous alkali-soluble polyester filament, which includes a foaming microcapsule preparation step, a preparation step of alkali-soluble chips containing foaming microcapsules, a melt foaming and spinning step, and a hollow textile preparation step. In the method for preparing the hollow textile with the core-spun yarn of short-staple wrapped microporous alkali-soluble polyester filament, a hollow yarn or a hollow fabric is made from a polyester filament having a microporous structure through alkali dissolution. The polyester filament having a microporous structure can effectively increase the contact area of the alkali dissolution and has the advantages of high dissolution rate, short dissolution time and complete dissolution. The hollow textile prepared from the hollow yarn or the hollow fabric obtained after dissolution has a comfortable hand feeling and has the characteristics of being fluffy, soft, warm and quick-drying.

The invention discloses a method for preparing a hollow textile with a core-spun yarn of short-staple wrapped microporous alkali-soluble polyester filament, which includes a foaming microcapsule preparation step, a preparation step of alkali-soluble chips containing foaming microcapsules, a melt foaming and spinning step, and a hollow textile preparation step. In the method for preparing the hollow textile with the core-spun yarn of short-staple wrapped microporous alkali-soluble polyester filament, a hollow yarn or a hollow fabric is made from a polyester filament having a microporous structure through alkali dissolution. The polyester filament having a microporous structure can effectively increase the contact area of the alkali dissolution and has the advantages of high dissolution rate, short dissolution time and complete dissolution. The hollow textile prepared from the hollow yarn or the hollow fabric obtained after dissolution has a comfortable hand feeling and has the characteristics of being fluffy, soft, warm and quick-drying.

A spool of yarn of natural, synthetic or artificial textile fibres, with the torsion value of the plied yarn (?) throughout the spool (1) being variable, and being associated with the instantaneous winding/unwinding diameter (DI) of the spool (1), equal to ? (tpm)=1/(DI*?) such that, on unwinding the yarn as twisted in a first direction N-S, the torsion value of the yarn, once unwound as twisted (?) is constant throughout the spool and is essentially equivalent to 0 tpm, and such that, on unwinding the yarn as twisted in a second direction S-N, opposite to the first direction, the torsion value of the yarn, once unwound as twisted (?), is variable throughout the spool and is equivalent to ? (tpm)=2/(DI*?). Process for the generation of the spool disclosed, and yarn twisting machine for the generation of the spool disclosed.