The way of Yarn Count

Theory:

                To indicate fineness/coarseness of a yarn by numerical value is called count. Count is the no. That indicates length per unit mass or mass per unit length.
Two system for measuring yarn count :
            1. Direct system: Length fixed but wt variable. Example: Tex, Denier

            2. Indirect system: Wt fixed but length variable. Example: English count.

Yarn no. length & wt unit

Indirect System	Direct System	Length Unit	Wt. Unit	Definition
English count		840 Yds	1 lbs	No. Of hank of 840 yds
Metric count		1 Km	1 kg	No. Of hank of 1km/kg
Woollen count		256 Yds	1 lbs	No. Of hank of 256 yds
Worsted count		560 Yds	1 lbs	No. Of hank of 560 yds
Linen count		300 Yds	1 lbs	No. Of hank of 300 yds
Dewsbury Count		1 Yds	1 Oz	No. Of yds/oz
	Tex	1 Km	1 Gm	No. Of gms/km
	Decitex	10 Km	1 Gm	No. Of gms/10km
	Jute	1440 Yds	1 lbs	No. Of lbs/hank of 1440 yds
	Denier	9 Km	1 Gm	No. Of gms/9km

Objectives:

·        To determine the fineness of the yarn.

·        To know the properties of yarn.

Instruments:

1.     Warp reel.

2.     Balance.

warp reel

Working procedure:   

First of all, we took yarn in yards by warp reel.

Then determined the weight of the yarn taken.

Observed the length & weight of the yarn taken.

Lastly calculated the yarn count according to the formula.

 Calculation:



Indirect System: N = L*w/  l*W

Direct System: l/L*W

Here,

L= Sample length
l = Unit length
W = Wt. Of sample
w = Unit wt of system = 1lbs

No. of obs	Sample Length (yds)	Sample wt (lbs)	Count
1.	26	22	29.45 (Indirect) 15.4 (Direct)

Conclusion:

After this experiment we have a clear idea about how to measure yarn fineness/coarseness by warp reel & balanced method.