KHADI YARN FAULTS

Figure of the

fault

Definition Causes Remedy

Undrafted and

untwisted

roving present

in the yarn

Broken gear

tooth.

Damaged cots

of top roller.

Insufficient

pressure on the

top roller.

Proper

maintenance.

Buffing of cots.

Pote

Moree

Figure of the

fault

Definition Causes Remedy

Improperly

joined broken

ends.

Improper

piecing present in

sliver or roving.

Improper

piecing by the

charkha operator.

Training to the

operator about

piecing and its

importance.

Bakar

Figure of the

fault

Definition Causes Remedy

Trash (mainly

seed coats)

present in the

yarn structure.

Improper

ginning i.e. seeds

broken during

ginning.

Presence of too

much trash in

cotton fibre.

Insufficient

cleaning in blow

room.

Good ginning

practice.

Selection of

proper cotton

variety.

Proper cleaning

in blow room.

Over Twisted Yarn

Figure of the

fault

Definition Causes Remedy

Presence of

excessive twist

in yarn

segments.

Wrong selection

of twist wheel.

Wrong selection

of spindle driving

pulley.

The yarn count

has become

coarser.

Suitable action

to overcome these

difficulties.

Soft Twisted Yarn

Figure of the

fault

Definition Causes Remedy

It is the yarn

portion having

less twist than

the normal.

Wrong selection

of twist wheel.

Wrong selection

of spindle driving

pulley.

Cord slippage

on spindle wharve

Select proper

twist wheel.

Check spindle

slippage at

regular intervals.

Daghi

Figure of the

fault

Definition Causes Remedy

Oil or stain

marks

present on

the yarn.

Over flowing of oil

from spindle bolster.

Excessive oil on

ring with the

intention of running

the traveller

smoothly.

Improper storage

of material.

Improper material

handling.

Proper oiling

and greasing.

Proper material

storage.

Proper material

handling

Slub

Figure of the fault

Definition Causes Remedy

Thick places

having length

of 1 to 4 cm

and about 5 to

8 times larger

than the

average yarn

diameter at

the thickest

portion.

Poor

individualization

of fibres at the

card.

Lack of

adequate fibre

control in the

drafting region.

Better opening

and cleaning in

blow room and

card.

Replace

defective aprons.

Adjust setting.

Adjust top

roller pressure.

Excessive

roving twist