[Script Info]
Title: 
[Events]
Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
Dialogue: 0,0:00:03.73,0:00:07.68,Default,,0000,0000,0000,,Air jet spinning first appeared for production use in the early '80s.
Dialogue: 0,0:00:07.81,0:00:10.08,Default,,0000,0000,0000,,It has continued to grow in popularity,
Dialogue: 0,0:00:10.45,0:00:13.05,Default,,0000,0000,0000,,especially for cotton and polyester blend yarns.
Dialogue: 0,0:00:13.75,0:00:18.49,Default,,0000,0000,0000,,The largest end use market up to this point has been for sheeting and print cloth.
Dialogue: 0,0:00:19.03,0:00:21.14,Default,,0000,0000,0000,,Recent advancements in the latest generation
Dialogue: 0,0:00:21.14,0:00:23.54,Default,,0000,0000,0000,,of machines have made this high production
Dialogue: 0,0:00:23.54,0:00:27.71,Default,,0000,0000,0000,,system more forgiving to shorter fiber length and thus to cotton use.
Dialogue: 0,0:00:28.27,0:00:30.78,Default,,0000,0000,0000,,This has broadened the technology's versatility and
Dialogue: 0,0:00:30.78,0:00:33.26,Default,,0000,0000,0000,,appeal to more end-use possibilities.
Dialogue: 0,0:00:34.45,0:00:37.53,Default,,0000,0000,0000,,This spinning system uses sliver as its input,
Dialogue: 0,0:00:37.96,0:00:40.92,Default,,0000,0000,0000,,thereby taking advantage of the cost-savings afforded by
Dialogue: 0,0:00:40.92,0:00:43.73,Default,,0000,0000,0000,,deleting the roving step required by ring spinning.
Dialogue: 0,0:00:44.20,0:00:45.43,Default,,0000,0000,0000,,Much like rotor spinning,
Dialogue: 0,0:00:45.59,0:00:47.96,Default,,0000,0000,0000,,it also produces a wound package that is
Dialogue: 0,0:00:47.96,0:00:50.59,Default,,0000,0000,0000,,ready for subsequent use in weaving or knitting.
Dialogue: 0,0:00:51.00,0:00:53.68,Default,,0000,0000,0000,,This negates the need for a separate winding step.
Dialogue: 0,0:00:54.62,0:00:57.59,Default,,0000,0000,0000,,The air jet machine uses roller drafting as the
Dialogue: 0,0:00:57.59,0:01:00.66,Default,,0000,0000,0000,,means for reducing linear mass in the fed sliver.
Dialogue: 0,0:01:01.07,0:01:03.38,Default,,0000,0000,0000,,The drafting system is not unlike the drafting
Dialogue: 0,0:01:03.38,0:01:05.79,Default,,0000,0000,0000,,configuration found on the ring spinning system.
Dialogue: 0,0:01:06.80,0:01:09.48,Default,,0000,0000,0000,,After exiting the front pair of drafting rolls,
Dialogue: 0,0:01:09.63,0:01:13.35,Default,,0000,0000,0000,,the fiber is pulled into an orifice by a suction airflow
Dialogue: 0,0:01:13.35,0:01:16.52,Default,,0000,0000,0000,,created by the vortex that will perform the twist insertion.
Dialogue: 0,0:01:17.58,0:01:19.61,Default,,0000,0000,0000,,As the fiber enters the vortex zone,
Dialogue: 0,0:01:19.86,0:01:24.28,Default,,0000,0000,0000,,it is literally spun into a yarn structure by the whirling air currents.
Dialogue: 0,0:01:24.74,0:01:25.77,Default,,0000,0000,0000,,Like rotor spinning,
Dialogue: 0,0:01:25.94,0:01:30.13,Default,,0000,0000,0000,,there is some degree of random fiber entanglement that is also involved.
Dialogue: 0,0:01:30.74,0:01:33.54,Default,,0000,0000,0000,,This is the main reason for the somewhat lower yarn strengths
Dialogue: 0,0:01:33.54,0:01:37.10,Default,,0000,0000,0000,,of air jet yarns when compared to their ring-spun counterparts.
Dialogue: 0,0:01:37.91,0:01:39.34,Default,,0000,0000,0000,,Just as in rotor spinning,
Dialogue: 0,0:01:39.51,0:01:43.01,Default,,0000,0000,0000,,this process is highly automated with automatic piecing of broken
Dialogue: 0,0:01:43.01,0:01:47.47,Default,,0000,0000,0000,,ends and automatic doffing, or removal, of full yarn packages.