Classification of Spinning
Wet Chemical Spinning
Wet spinning oldest method of spinning a fibre. Again, the polymer is dissolved suitable solvent. Either reacts chemically to coagulate (harden) the polymer, or it draws out the solvent from the polymer stream the filament can harden. Viscose. polyvinyl and certain elastomerie Fibres are wet spun.
Nylon, polyester, saran and sulfar are produced manner.
Melt spun fibers extruded from the spinneret cross-sectional shapes (round, trilobal, pentagonal, octagonal, and others). Trilobal-shaped fibexs reflect more light sparkle to textiles
involves the extrusion of liquid solution through the spinneret into an air chamber. The air reacts with the extruded streams causing them to solidify twisted and/or processed further wound onto spools. This method of spinning in manufacturing of acetate yarns.
the drawing out of an assembly of staple fibers to thickness and inserting twist to impart strength to the yarn. mechanical spinning process product single yarn
- To attenuate roving until fineness is reached.
in the last step of yarn production, the staple fibers are fed to the ring . after passing through the blow room (opening and cleaning) carding frame.
It is of further drawing out roving to yarn count needed, inserting twist to the fibres by means of a rotating spindle and winding the yarn on a bobbin. These three stages simultaneously and continuously.
A stationary ring is spindle, which holds the traveler. Yarn from the drafting unit is drawn under the traveler, led to the yarn package. to wind the twisted yarn on a bobbin tube carried by the Spindle, the traveler is required to cooperate with the spindle. The traveler moves on the ring physical drive. but is carried along by the yarn threaded with. The rotation rate oftraveler is the Spindle. and this difference speeds of traveler spindle enables the winding of the yarn on the tube. A controlled up and down movement of the ring determines of the yarn package, called Cop or Bobbin. Ring spinning technology provides the widest terms of the yarn counts it can produce..
Rotor spinning or Open end spinning
The fibres are sucked down a delivery tube and deposited groove of the rotor as ring of fibre. The fibre layer is stripped off the rotor groove The twist yarn being determined by the ratio of the rotational speed of the rotor linear speed of the yarn. post.
The fibres are then deposited into the rotor where and deposits them along the groove of the rotor where evenly distributed. The fibres are twisted together by the spinning action of the rotor, yarn is continuously drawn from the centre of the rotor.
Rotor spun yarns are more even.somewhat weaker and have a harsher feel than ring spim yams. Rotor spun yarns are mainly produced medium count (30 Ne, 20 tex) to coarse count (l0 Ne, 60 tex) range.
of has two basic advantages. fed by sliver, not the ringframe by roving. eliminates the speedframe from line. It be modified any remaining trash, thereby improving the yarn quality.
Open-end spinning produces type ofyam to ringframe spinning. Open-end yarns tend to be more uniform. lower in strength, more extensible, bulkier. more abrasion resistant and more absorbent. lt then with all ofthese differences, Of wich are beneficial, that open-end spinning replace ringspun yarn as originally thought. but a complimentary product.
Open-end spinning operates at a rate up times that of ring spinning be effectively used for cotton, polyester-cotton blends. as other short and medium staple systems. Synthetic staple fibers polyester alone be effectively open end spun dusting of oligomer from the fibers that interferes with the spinning action of the rotor.
Short stable spinning
In short staple spinning three spinning systems are available . In ring spinning carded and com bed yarn are produced of yarn quality. , price as we“ as time consumption.