# Textile Calculation

Problems and solutions of textile

## Calculate the Yarn Consumption of a Loom

Calculate the Yarn Consumption of a Loom
S. M. Hossen Uzzal
Production Officer
Monno Fabrics Ltd., Manikgonj
Email: uhossen@gmail.com

Yarn Consumption of a Loom
A loom is a device used to weave cloth. The basic purpose of any loom is to hold the warp threads under tension to facilitate the interweaving of the weft threads. The quantity of yarn which is required to produce fabric is called consumption of yarn for a loom. It is very important task for weaving master.

 Consumption of yarn
Problem-1:
Calculate the yarn consumption of a loom per hour running at 180 PPM for producing [(40 X 60)/(72 X 48)] X 56” fabric.

Solution:
180                  1
Production/hour/loom = ……… X 60 X …….
48                  36

= 6.25 yd

72 X 56 X 6.25 X 1.05 X 1.1
Required amount of warp = …………………………………………
840 X 40 X 2.004

= 0.393 kg

48 X 36 X 6.25 X 56 X 1.05 X 1.1
Required amount of weft = …………………………………………….
36 X 840 X 60 X 2.024

= 0.175 Kg

Problem-2:
A loom runs at 210 picks/min at an overall efficiency 82%. The warp width in the reed is 1.2m and the linear density of the weft is 30 tex. What is the weft consumption per 8 hours

Solution:

A) Length of weft used per hour at 100% efficiency

=1.2 X 210 X 60 /1000km

=15.12km per hour

B) At 82% efficiency, the length used in 8 hours

=15.12 X 0.82 X 8 =99.19km

C) Weft consumption, for 30 tex yarn is:

=30 X 99.19 /1000kg =29.76 kg per 8 hours