Winding defects, causes and their remedies
Stitches on This is due to improper laying out of ends onto the cone at reversal of yarn
cone path. It causes more end breakages in the subsequent processes and also leads
to excessive yarn waste.
Cause
● Cone holders that are improperly set and are vibrating
● Tension brackets misaligned with winding drum
● Wrapping of coils of thread around the bottom of cone holder
● Traverse restrictors fixed at incorrect position
Remedies
● Overhauling of cone winders to be done time to time
● Setting of cone holder and alignment of tension brackets with the drum
to be done regularly
Md. Sayful Islam, Lecturer, Textile Engineering College, Zorargonj, Chattogram Page 1
Ribboning or In this type of defect a ribbon like structure is formed on the circumference of
patterning the cone. It results in high level of slough off during unwinding, excessive yarn
waste and uneven dye pick up in the case of dye packages.
Causes
● Restriction in the rotation of the winding spindle
● Improper setting of cone holders
● Cam switch set improperly
● Loading of lint in the groove of builder cam
Remedies
● Cone winders are to be overhauled periodically
● Anti patterning device is to be checked regularly
● Cone holders are to be properly lubricated so as to ensure their free
movement
Soft Package It is caused due to abnormal softness of the structure of the package. In this
case the overall density of the package is lower. It results in soft packages
either at the base or at the nose of the cones.
Causes
● The winding spindle is not properly aligned to the improper alignment
of winding spindle to winding drum
● The tension during unwinding is inadequate
● Loading of the cradle is insufficient
Remedies
● The tension during unwinding is to be kept between 6-8% of single
yarn strength
● The pressure at the cradle is to be maintained at required level
Bell shaped In this type of defect, the cones are tightly built at centre and appear in the
cone shape of a bell. Such type of defect in the packages leads to excessive breaks
during subsequent processes.
Causes
● The tension of yarn is high during winding
● Improper setting of cone holders with winding drum
● Paper cones being damaged at the middle
Remedies
● Cones are to be checked for quality during purchase
● The tension during unwinding is to be kept at required level
Md. Sayful Islam, Lecturer, Textile Engineering College, Zorargonj, Chattogram Page 2
Nose Building It results in bulging of bunches of yarn at the nose of the cones. This leads to
slough off during warping.
Causes
● Setting of cone holders to winding drum is incorrect
● Periodical inspection of settings in machines
Remedies
● Avoiding use of damaged paper cones
● Tenters to be instructed to adopt correct work practices
Collapsed In this type of defect, the structure of the package itself gets collapsed. This
cone kind of defect in the packages cause excessive breaks during warping and tend
to generate a high level of hard waste.
Causes
● Use of poor or damaged cones
● Poor system of material handling
● Maintaining non optimum unwinding tension
Remedies
● Tenters to be trained on correct work practices
● Proper material handling devices such as cone transport trolleys to be
used
● Cone inserts to be used for paper cones
Md. Sayful Islam, Lecturer, Textile Engineering College, Zorargonj, Chattogram Page 3
