Page 29 - Shawl Weaving Artisan - TP

Textile & Handloom Exercise 1.2.14
Shawl Weaving Artisan - Winding and Warping

Yarn winding for warp making process (pre warping activity)

Objectives : At the end of this exercise you shall be able to
• calculate the minimum amount of yarn required for making the warp for weaving.

Requirements

Tools/Equipment’s/Instruments Materials
• Empty double flanged bobbin - 1 No. • Yarn samples:wool - as reqd.
• Yarn winding machine - 1 No.

PROCEDURE

TASK 1: Calculate the minimum amount of yarn (in kilograms) required for making the warp for weaving
• Warp ends Yarn length per kg = Yarn Count × 840 × 0.9144

Each vertical thread in the fabric is called an “end.” (This converts yards per pound to meters per kg for
• EPI (Ends Per Inch) cotton yarn count Ne)
Example
This means how many warp threads are present in
one inch of fabric width. Given

• Fabric width • Fabric Width = 40 inches
The width of the fabric you want to weave (in inches). • EPI = 50
• Warp length • Warp Length = 500 meters
The total length of warp you want to prepare (in • Yarn Count = 40s Ne (cotton count)
meters).
Step 1: Calculate Total Ends:
• Yarn count 50×40=2000 ends
The thickness of the yarn (example: 30s Ne, 40s Ne, Step 2: Calculate Yarn Length per kg:
etc.).
For 40s Ne cotton yarn:
Formula
40×840=33,600 yards per pound
Step 1
Converting yards to meters:
First, calculate the total number of ends
33,600×0.9144=30,700 meters per kg (approx)
Total Ends = EPI × Fabric Width (inches)
Step 3: Calculate Total Yarn Weight:
Step 2
2000×500 / 30700 ≈ 32.6 kg.
Now, calculate minimum yarn weight (in kg)
Need about 33 kg of yarn for this warp.
Total Ends × Warp Length (meters)
Warp Weight (kg )
Yarn length per kg (meters per kg )

TASK 2: Calculate total warp required

Total Yarn Weight (kg) Example: If total yarn weight is 50 kg and you wind it
Winding Weight (kg) into 10 packages, each package weighs 50/10 = 5 kg.
Number of Packages

17