Yarn Spinning Formulas
Formulas used for yarn spinning production including various yarn numbering system conversions.
Common Spinning Formulas
Types of Plackets in garment making
Type of plackets, parameters, and properties required for creating plackets
Grams per Meter | 0.5905 / Ne |
Grams per Yard | 0.54 / Ne |
Tex | den x .11 = 1000/Nm = Mic/25.4 |
Ne | Nm/1.693 |
DRAFT | (feed weight in g/m) / (delivery weight in g/m) |
DRAFT | Tex (feed)/Tex(delivery) |
DRAFT | delivery roll surface speed/feed roll surface speed |
No. of hanks delivered by m/c | (Length delivered in m/min)/1.605grams per meter = 0.5905/Ne |
Carding
Production in kgs / hr | ( L x 1.0936 x 60 x effy ) / (hank (Ne) x 36 x 840 x 2.2045)
L – delivery speed in m/min |
Production in kgs / hr | (L x Ktex x 60 x effy) / ( 1000 )
L – delivery speed in m/min |
Production in kgs / 8 hrs | (0.2836 x L x effy) / (Ne)
L – delivery speed in m/min |
Production / 8 hrs | (Hank x Nd) /( Ne x 2.2045)
Hank = no of hank (840 yards)delivered by the machine |
Total draft in card | (feed weight in g/m) / (sliver weight in g/m) |
Drawframe
Break draft | surface speed of 2nd roller / surface speed of back roller |
Main draft | surface speed of 1st roller / surface speed of 2nd( middle) roller |
Total draft | surface speed of delivery roller / surface of feed roller |
Production in kgs / 8 hrs | (0.2836 x L x effy x Nd) / (Ne)
L – delivery speed in m/min |
Production in kgs / hr | (FRD x FRrpm x 3.14 x 60 x effy x Nd) / (Ne x 840 x 36 x 2.2045)
FRD – front roller dia in inches |
Speedframe & Ringframe
Twist / Inch (TPI) | Spindle speed / FRS
FRS – front roller surface speed in inches/mi |
FRS = FRrpm x 3.14 x FRD | FRS – Front roller surface speed
FRD – front roller diamete |
T.P.I | T.M. x sqrt(count or hank)
T.M. – Twist multiplier |
Production in kgs / 8 hrs | (7.2 x SS x effy) / (TPI x Ne x 1000)
SS – spindle speed |
Spindle speed | m/min x TPI x 39.37 |
Hank delivered | spindle speed / ( tpi x 62.89) |
Ring traveller speed in m/sec | (spindle speed x ring dia in mm x 3.14) / (60 x 1000) |
Winding
Production in kgs / 8 hrs | (0.2836 x L x effy x Nd) / (Ne)
L – delivery speed in m/min |
Production in kgs / hr | ( L x 1.0936 x 60 x effy ) / (hank (Ne) x 36 x 840 x 2.2045)
L – delivery speed in m/min |
WHEN I GET DIFFERENCE BETWEEN FR SPEED BY TACHOMETER AND TO MACHINE DISPLAY THAN WHAT A PROBLEM I SUFFER IN MY MACHINE.
IS IT BY MECHANICAL SIDE OR ELECTRICAL SIDE?
EX. IN TACHOMETER FR SPEED IS 280
IN MACHINE DISPLAYED FR SPEED 250.
Ring Frame Ry4 ki front roller se spindle speed kesy nikaly geyn ??
The constant 3.14 how to create?
Sir,
Im very new to spinning and also unknown person to spinning. but due to covid 19 ,im joining spinning unit . as supervisor. plz let me know the formulaes.
R/SIR. HOW CALCULATE THE REWIDING BREKS IN AUTO CONER ANY ENGLISH COUNT.
In prodn calculation you have multiply the Ss with 7.2,what is this,how it is derived pl explain
Production :
Grams/Spdl/Shift
= 7.2 * Spdl. Speed/TPI * Count
Where 7.2
= 8 * 60 * 1000 * 1.0936/840 * 39.37 * 2.2046
How to calculate average speed(spinnin)?
im a investigator in rnd rnd formula all pls
dear sir,
I am training supervisor in the textile industry spinning plant, so plz tell me calculation ring frame, auto corner, cheese winding and (TFO) with calculation formula
It is base value
If one 840 yard yarn weighs one pound it will one count
Similarly if one pound of yarn give 840 yards of 49 times it will be 40 s count ne
36 in the calculation is wrong as you are converting meters into yards already by multiplying meters/m with 1.09.
yes absolutely right… you are
Why 840 Yard constant in textile
That is the question!. That is how someone was able to order the same weight of yarn agai and n!
I believe that was as much as a bobbin held back then, so it was a standard measurement. No one understands why!!
So if you were able tp get 16 hanks out of a pound, it was said to be “16 weight”, or size 16, That weight of yarn was a way for a customer to order the same weight of yarn again. Which is why we have 8 and 16 and 24 weight of yarns today.
Unfortunately, this doesn’t apply the same to all fibers — each has its own standard measurement.
At least, it seems plausible to me!
Dear Sir
I want and I you about profit and cost.
Pls can you explains me about quality formulas example (60×60×40)/(60×60×40)=61
Pls explain me?
If I know what quality I want use on looms how can I know production cost?
Best regards
dear sir,
I am training supervisor in the textile industry spinning plant, so plz tell me calculation ring frame, auto corner, cheese winding and (TFO) with calculation formula
how to increase noil percentage in comber e65 reiter
what is meant by propack in autoconer aerlicon
how to calculate TM for double yarn, say 2/60 cotton yarn.
Carding gauge in pv yarn
card Engeenir Muhammad esmaeel
Email
Yasiresmaeel@yahoo.com
wat is T.M explain twist multiplier