Transcript Khadi Yarn Faults (PowerPoint)

KHADI YARN FAULTS
Pote
Figure of the
Definition
Causes
Remedy
fault
Undrafted and Broken
untwisted
tooth.
roving present
Damaged
in the yarn
of top roller.
gear Proper
maintenance.
cots Buffing of cots.
Insufficient
pressure on the
top roller.
Moree
Figure of the
Definition
Causes
Remedy
fault
Improperly
Improper
joined broken
piecing present in operator
ends.
sliver or roving.
piecing
Improper
importance.
piecing
by
Training to the
the
charkha operator.
about
and
its
Bakar
Figure of the
Definition
Causes
Remedy
fault
Trash (mainly
Improper
Good
seed coats)
ginning i.e. seeds practice.
present in the
broken
ginning
during Selection
yarn structure. ginning.
proper
of
cotton
Presence of too variety.
much
trash
in Proper cleaning
cotton fibre.
Insufficient
cleaning in blow
room.
in blow room.
Over Twisted Yarn
Figure of the
Definition
Causes
Remedy
fault
Presence of
Wrong selection Suitable action
excessive twist
of twist wheel.
in yarn
Wrong selection difficulties.
segments.
of spindle driving
pulley.
The yarn count
has
coarser.
become
to overcome these
Soft Twisted Yarn
Figure of the
Definition
Causes
Remedy
fault
It is the yarn
Wrong selection Select
portion having of twist wheel.
proper
twist wheel.
less twist than
Wrong selection Check
spindle
the normal.
of spindle driving slippage
at
pulley.
Cord
regular intervals.
slippage
on spindle wharve
Daghi
Figure of the
fault
Definition
Oil or stain
marks
present on
the yarn.
Causes
Remedy
Over flowing of oil Proper
oiling
from spindle bolster. and greasing.
Excessive oil on
ring
with
the
intention of running
the
traveller
smoothly.
Improper storage
of material.
Improper material
handling.
Proper material
storage.
Proper material
handling
Slub
Figure of the
fault
Definition
Causes
Remedy
places Poor
Better opening
having length individualization
and cleaning in
Thick
of 1 to 4 cm of fibres at the blow room and
and about 5 to card.
8 times larger Lack
than
the adequate
card.
of Replace
fibre defective aprons.
average
yarn control in the Adjust setting.
diameter at the drafting region.
Adjust
top
thickest
roller pressure.
portion.
Excessive
roving twist