Flow diagram of the spinning process for textile yams

The main difference in the production of technical yams is die presence of a multiple drawing stage before winding, which is necessary to give the yam a higher tenacity. The melting and spinning phases are described in the same way as for the textile yams. 

The yam is then drawn on four rolling mills (godets) the hot godet causes some fumes that must be collected and sent to the treatment plant. 

Finally, the yams are wound up at high speed on special equipment (take-up), producing bobbins. The bobbins are then sorted and packed into cartons or wrapped in rows on pallets. 

The melting and spinning phases can be practically described in the same way as the textile 

The spin finish is carried out at the spin take-up wall, and then the filaments are passed over deflector rollers and combined into one tow. A haul-off unit conveys the tow to a sunflower unit that lays the tow into cans, then arranged under a creel. 

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Figure 9.9 Flow diagram of the spinning process for textile yams 9.2.3.3 Processing of technical yarns...

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