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Effect of Fiber Properties on Yarn Hairiness in Ring Spun
Yarn
Effect of the Type of Fibers and Their Properties on Yarn
Hairiness on Ring Spun YarnS.SivakumarProduction Manager
Oxford Amalgated PLC, Ethiopia
Email skumars72ss@gmailcom
Yarn Hairiness
Yarn hairiness is the amount of fi!ers protruding from the
"arn !od" measured in terms of itslength and num!er of fi!ers #o$ a
da"s hairiness pla"s a %ital role in accessing the "arn
&ualit"
as it hea%il" influences the &ualit" of the fa!ric produced
from the spun "arn in knitting as $ell
as $ea%ing 'he essential fa!ric properties of pilling
resistance and a!rasion resistance are
affected !" the "arn hairiness Also the performance of (arping
machine, Si!ing machine, highspeed knitting and high speed $ea%ing
machines are also affected !" the "arn hairiness
)arn hairiness
"easure of Hairiness *airiness is measured in t$o methods
#. Hairiness $nde% &H' +'E- introduced this method of
testing .t is the %alue represents thetotal length in CMs of the
protruding fi!ers in / CM length of "arn
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(. Hairiness $nde% &S)' 0(E.1LE counts the num!er of
protruding fi!ers of different lengths
separatel" %alue is the sum of the num!er of fi!ers of mm and
longer length of protruding
fi!ers
*airiness is $idel" influenced !" fi!er properties, process
parameters, spindle speed, tra%eller
selection, machiner" conditions, -elati%e humidit" and amount of
t$ist 3ut in this article $e arediscussing a!out the fi!er
properties 'he" are,
/ 'orsional rigidit"
2 4i!er length
4i!er fineness
5 hort fi!er content
6 +niformit"
4i!er cross section 8 shape
*. Torsional Rigidity.t is the ratio of the tor&ue applied
a!out the central axis of the "arn at one end of the "arn to
the
resulting torsional angle, $hen the other end is held fixed On
other hand, it is the resistance of the textile fi!er or "arn
against t$isting 'he torsional rigidit" of the cotton fi!ers are
%er" much
depends on their fi!er fineness .t is %er" sensiti%e to the
-elati%e humidit"
'his is the prime propert" $hich affects the hairiness of "arn
'he fi!ers $ith higher 'orsional
rigidit" ha%e higher "arn hairiness and %ice %ersa
+. Fiber length'he "arn hairiness reduces $ith increase in fi!er
length 'he reason is the reduction in num!er of
fi!er ends protruding from the "arn surface resulting in less
hairiness (hile using longer fi!ers,the fi!ers tend to o%erlap on
the "arn surface in a !etter manner and hence impro%e the
compactness of "arn $hich results less hairiness
). Fiber fineness'he "arn hairiness is less for finer fi!er and
higher for coarser fi!er 'he torsional rigidit" is the
most essential propert" of the fi!ers contri!utes to the
formation of hairiness 1enerall" the finer fi!er $ill ha%e
less torsional rigidit" and hence the hairiness $ill !e less 'he
coarser fi!er has
higher torsional rigidit" and higher hairiness in "arn (hen the
"arn deli%ering to the front roller
nip and $hile t$ist insertion, the higher centrifugal force
acting upon the coarser fi!er leads to
higher hairiness
,. Short fiber content
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4C has positi%e correlation $ith the "arn *airiness .ncrease in
4C $ill increase "arn hairiness
and %ice %ersa 'he increase in num!er of protruding ends in "arn
surface due to shorter fi!er
length leads to increase the "arn hairiness
-. niformity RatioAs the increase in +niformit" ratio impro%es
the mean fi!er length and hence this propert"ha%ing a negati%e
correlation $ith "arn *airiness
/. Fiber cross section 0 ShapeComparing the circular and
non9circular cross sectional fi!ers, the "arn hairiness is less
$ith the
"arn spun $ith circular cross sectional fi!ers 'he compactness
of fi!ers $hile using circular
cross section fi!ers is !etter than that of other and hence the
hairiness is less $ith circular crosssection fi!ers
3ut the impact of t$ist on hairiness in non9 circular cross
section fi!ers is !etter than circular
cross section fi!ers *igher the t$ist $ill reduce the *airiness
to more extent in non9 circular cross sectional fi!ers
References
/ .nfluence of fi!er length and denier on properties of
pol"ester ring and air :et spun "arns
; A 3asu< = P Chellamani ; .>4'- ; ?ol269ep 2
2 .nfluence of Pol"ester fi!er shape and sie on the hairiness
and some mechanical properties of "arns ; - = ?ashne", ? =
=othari < Bhani:a ; .>4'- ; ?ol ;Mar
2/5
'he +se of Monte Carlo 'echni&ues to stud" "arn hairiness
for -ing spun "arns ;
-M+'P .nternational conference9 'extiles < 4ashion 2/2 ;
>ul" 2/2
5 'orsional properties of staple D!re plied "arns ; B 1
Phillips, ( 3 4raser and 1 * M?an der *ei:den ; #o% 2
6 'he -ieter Manual of spinning ; ?ol/ ; 'echnolog" of short
staple spinning ; (erner
=lein
-ead moreF
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