Weaving
Calculation & Useful Formulas:
Weaving
calculation is too much important to know for a textile engineer or textile
related person related person to run a weaving factory perfectly. In the
past, I have presented different calculation article on the different parts of
weaving such as winding calculation, warping calculation, sizing calculation andloom production calculation. This article
has presented all the formulas or laws needed to complete the mathematical
problems of weaving sector.
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| Fig: Weaving factory in textile |
Winding
Calculation Formula in Weaving:
1.
Required time,
=
Quantity of yarn in lb to be wound / Number of drum / actual production in
lbs per hour
Or,
=
Amount of yarns in lbs × count of yarn / No. of drum / actual production in hank
Or,
=
Amount of yarn in hank / No. of drums / actual production in hank
2.
Actual production in pounds,
=
Calculated hank / Yarn count × efficiency%
3.
Actual production per hour in pound,
=
Actual production in hank / Yarn count
4.
Actual production in hank,
=
Calculated yards / 80 / Efficiency%
5.
Calculation production per hour in yards,
=
∏× diameter × speed in RPM
=================================================================================
Warping Calculation Formula in Weaving:
1.
Required time in hour,
= Length
of warp to be produced in yards / Actual production per hour in
yards
2.
Beam count or count of warp,
=
Length of yarn in yards on the beam / 840 / weight in lbs
Or,
=
No. of ends × length of warp in yards / 840 / weight in lbs
3.
No. of ends in the warp,
=
Yarn count× weight in lbs / Warp length in hanks
Or,
= Yarn
count × weight in lbs × 840 / Length of warp in yds
4.
Length of warp,
= Weight
of warp in lbs× yarn count × 840 / No. of ends …………………..... (Yds)
Or,
=
Weight in lbs / No. of ends
Or,
Weight of warp in lb× count of yarn / No. of ends ……………. (Hank)
5.
Weight of warp in lbs,
Warp length in yds× no. of ends / Yarn count / 840
Or,
=
Number of ends × length of warp in yds / Count of yarn
6.
Total length of yarn in the warp,
=
Number of ends× length of warp / 840
================================================================================
Sizing Calculation Formula in Weaving:
1.
Total wt of size on warp,
=
Wt of sized warp – wt of unsized warp
2.
Total length of sized yarn,
=
Total warp length × No. of ends
3.
Weight of sized warp in lbs,
Length of warp in yds. × Number of ends / Count / 840
4.
Weight (wt) of size to be put on warp,
=
Size% required to be put on warp × Wt of unsized warp,
5.
Count of sized yarn,
Warp length in yds × number of ends / Wt of sized warp in lbs /
840
6.
Count of sized yarn,
Count of unsized yarn × 100 / Size% + 100
7.
Sizing efficiency,
=
{Actual production/Calculated production) × 100%}
8.
Size% on warp,
Wt of size
= …………………………….
× 100%
Wt of unsized warp
9.
Weight of unsized warp in lbs,
Warp length in yards × No. of ends / Yarn count / 840
=========================================================================
Loom Production Calculation Formula in
Weaving:
1.
Loom production per hour in meter,
No. of loom × PPM × Time × Efficiency /
PPI / 39.37 / 100
2.
Fabric weight,
=
(warp weight+ weft weight)
Thanks
by Rubel
