Page 26 - Shawl Weaving Artisan - TT

Bell-shaped cone Collapsed cone
In this type of defect, the cones are tightly built at the In this type of defect, the structure of the package itself
center and appear in the shape of a bell. Such type of gets collapsed. This kind of defect in the packages
defect in the packages leads to excessive breaks during causes excessive breaks during warping and tends to
subsequent processes. (Fig 8) generate a high level of hard waste. (Fig 10)

Fig 8 Fig 10

Sources
• Use of poor or damaged cones

Sources • Poor system of material handling
• The tension of the yarn is high during winding • Maintaining non-optimum unwinding tension
• Improper setting of cone holders with winding drum Corrective actions
• Paper cones being damaged at the middle • Tenters to be trained on correct work practices
Corrective measures • Proper material handling devices such as cone
transport trolleys to be used
• Cones are to be checked for quality during purchase
• Cone inserts to be used for paper cones
• The tension during unwinding is to be kept at required
level Ring-shaped cone
Nose bulging This defect results in the formation of a ring-shaped
bulge across the cross-section of the cone. It results in
It results in the bulging of bunches of yarn at the nose
of the cones. This leads to slough off during warping. more end breaks in the subsequent processes and also
(Fig 9) causes slough off during unwinding. (Fig 11)
Fig 11
Fig 9

Sources Sources
• Setting of cone holders to the winding drum is • Incorrect setting of a cone holder
incorrect • Wrong placement of tensioners in the tensioning
• Periodical inspection of settings in machines assembly
Corrective actions • Traverse of yarn affected due to defects in the grooves
of the drum
• Avoiding the use of damaged paper cones
Corrective measures
• Tenters to be instructed to adopt correct work
practices • Due replacement of defective drums and stop motion
wires to be ensured
• Periodic inspection of cone holder settings and tension
assembly to be carried out.

16 Textile & Handloom: Shawl Weaving Artisan : (NSQF - 2024) R.T. Ex.No 1.1.06