Quality Standard for Ringframe Cop

Quality Standard for  Ringframe Cop :-

Quality Standard Value of Ring spun yarn are given below -

Yarn Characteristic	required value for 30S Combed	other  combed counts
Average count	30 ( 29.6 to 30.4)	nominal count plus or minus 1.3%
Count C.V%	less than  1.5	less than 1.5%
Twist Multiplier	3.5 to 3.6	3.5 to 3.6
TPI  C.V%	less than 2.5	less than 2.5%
U%	9.2 to 9.8	5 to 10 % Uster Stat . value
-50% thin place / 1000m	less than 4	5 to 10 % Uster Stat . value
-30% thin place / 1000m	less than 650	5 to 10 % Uster Stat . value
+50% thick place / 1000 m	less than 30	5 to 10 % Uster Stat . value
+200 Neps / 1000m	less than 50	5 to 10 % Uster Stat . value
Total Imperfection / 1000 m	less than 85	5 to 10 % Uster Stat . value
RKM ( tenacity) gms /tex	more than 16.5	more than 16.5
RKM C.V%	less than 7.5 %	5 to 10 % Uster Stat . value
Elongation %	more than 5.5	more than 5.5
Hairiness H	4.0 to 4.5	< 50% value of Uster Statistics
Hairiness Standard Deviation	less than 1.5	25% Uster stat value
Objectionable classimat faults(both short and long)	less than 1 per 100 km	less than 1 per 100 km
Total classimat faults	less than 150	5 to 10 % Uster Stat . value
H1- thin faults	less than 5 per 100 km	5 to 10 % Uster Stat . value
shade variation on cones in UV lamp	no shade variation	no shade variaition