Processing of cotton double filament core-spun siro yam was discussed.Polyester filament and spandex filament were selected as core yam,cotton was used as covering fiber.Spinning frame was moditied,filament unwinding mode was optimized and spinning processing was selected correctly,finally cotton double filament core-spun sire yarn can be spun successfully.It is considered that control of filament unwinding tension is the key.The two fdaments should be unwinding respectively.Traditional creel stand active unwinding should be used for spandex filament,pre-tension should be selected rationally.Larger package creel axial passive unwinding should be used for polyester filament,tension controller should be used as well.
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