Yaa Decision Of The Yarn Count Past Times Roll Reel & Analytical Remainder

Determination of the Count yesteryear Wrap Reel & Analytical Balance

Meftaul Ferdous
Lecturer, Dept. of Textile Engineering
Islami Bank Institute of Technology
Email: tex.e.ferdous@gmail.com

Experiment Name:
Determination the yarn count of a given cotton fiber sample yesteryear wrap reel & analytical balance.

Theory:
Yarn count: The yarn count is a numerical facial expression which defines its fineness or coarseness. It too expresses weather condition the yarn is thick or thin. H5N1 Definition is given yesteryear the stuff industrial plant life – “Count is a divulge which indicates the majority per unit of measurement length or the length per unit of measurement majority of yarn.”

Length inwards yard × Weight Unit
Cotton Count = ........................................................................................................0 1
840 Yard × Weight inwards pound

Objectives of Experiment:

To know close yarn count .
To know close wrap reel & analytical balance.
To know how to create upwardly one's heed the count yesteryear wrap reel & analytical residual .

Wrap Reel:
H5N1 wrap reel or skein winder is a device for measure yarn together with making it into hanks of a touchstone size.. The reel is of a touchstone size together with its revolutions are counted every bit the yarn is wrapped unopen to it. Typically, a laid upwardly divulge of revolutions volition live used thus that the hank is of a touchstone size — a skein or lea. For example, a skein of cotton fiber would live lxxx turns on a reel of 54 inches circumference, making 120 yards, piece the touchstone length for wool worsted would live lxxx yards.

The tension of the yarn every bit it was injure onto the reel was of import because it would live elastic together with thus a touchstone tension was required to ensure uniformity. For a given reel, this would live determined yesteryear the friction of the setup together with thus the attempt hanks would live made together with measured inwards other ways to calibrate the device.

Wrap reel are 2 types on the the world of driving method :

Hand Drive
Power Drive .

Figure: Hand Drive Wrap Reel

Analytical Balance:

An analytical residual (often called a "lab balance") is a degree of residual designed to stair out modest majority inwards the sub-milligram range. The measure pan of an analytical residual (0.1 mg or better) is within a transparent enclosure amongst doors thus that dust does non collect together with thus whatsoever air currents inwards the room produce non send upon the balance's operation. This enclosure is ofttimes called a draft shield. The purpose of a mechanically vented residual security enclosure, which has uniquely designed acrylic airfoils, allows a smoothen turbulence-free airflow that prevents residual fluctuation together with the stair out of majority downward to 1 μg without fluctuations or loss of product. Also, the sample must live at room temperature.

Figure: Analytical Balance

Data Collection:

Sl. No	Length (Yard)	Weight(gm)	Weight(lbs) Gm Wt/453.6	Count	Average Count
01	120	2.00	o.0044	32.46
02	120	2.10	0.0046	31.05
03	120	2.00	0.0044	32.46	31.48
04	120	2.15	0.0047	30.40
05	120	2.10	0.0046	31.05

Calculation:

               Length inwards yard × Weight Unit
Count = ..........................................................
               840 Yard × Weight inwards pound

      120×1
= ......................
   840×0.0044

= 32.46

By the same procedure some other are calculate together with calculate average count.

Result:
The cotton fiber count is 31.48

Procedure: