Analysis is done to the nontreatment cot DP-65 regarding resile,anti-abrasion,anti-entangling and spinnability. Comparative production with another domestic product shows that the cot DP-65 is of excellent performance for upgrading spinning quality and CV value.
As to the poor anti-entangling and anti-static performance of the domestic nontreatment cots,Comparison analysis comes to a conclusion that nontreatment cot XLC-WJ465 is advantageous over some domestic products as to the spinning index when spinning yarn CJ 14.6 tex. Production proves that the cot is excellent in anti-entangling,elasticity,anti-abrasion,anti-aging,wide application and stable spinning quality.
Description is given to the development and application of surface non treated seperating roll with low hardness NFR W999 regarding preparation and sorting of raw materials,new tech and new testing means. Time tested practice shows that the roll above said is of good anti entangling property,stable operation and quality products. It is recommended that the products can be used as a substitution of the same kind from abroad for good CV values.
Through spinning practice with different type of machines or the same type of machines for production of different yarns or the same yarns,conclusion is made that the two non surface treatment cots WJ465,WJ468 are excellent im yarn holding,stable anti entangling and CV value improvement . The products are worthy of being generalized.
The anti-lapping property and yarn quality have been obviously improved, service life prolonged. For example, when spinning P/C with 849 cots,their service life is prolonged from 1.5—2 months to 4—6 months.