REASON FOR LONG AND THIN FAULTS

REASON FOR LONG AND THIN FAULTS

1. Excessive incidence of web falling, partial or full in cards. This is due to cotton used with higher mic value, or poor Rh%, or higher web tension draft.

2. Too high a creel draft, or break draft, or web tension draft in drawing.

3. Excessive variation in top roller pressure in drawing.

4. Worn out top roller end bushes, or worn out shells in draw frame.

5. Disturbance for the free rotation of creel calendar roller.

6. Sliver stretch on the creel ,of the simplex due high creel tension draft, or creel roller drive struck up.

7. Too high a break draft in simplex.

8. Excessive roving stretch, due to improper function of builder motion mechanism.

9. Use of empty roving bobbin in simplex, with wide variation in bare bobbin diameter.

10. Sliver splitting in simplex, while drafting, or sliver splitting on the creel.

11. Sliver not running, in the center of the top arm.

12. Creel stretch of roving in ring frame due to obstruction in free rotation of the bobbin holder.

13.  Roving stretched in the roving condenser, due to waste chocking in the roving condenser.

14. Due to lower tape tension, lower tpi inserted in the yarn, it causes stretch at further process.

15. Excessive speed of coiler in draw frame.

16. Larger diameter trumpet selection in drawing, also causes creel stretch in simplex.

17. Life ended false twister will insert lower tpi, comparing to good condition false twister, resulting in roving stretch in further process.