some impotence Weaving calculation

1. 1. Reed Count
It is calculatedin stock port system.No. of dents in 2 inches is
calledReed Count.
Reed Count = EPI/(1 + Weft crimp%age)
2. Reed Width
Reed Width = Cloth Width *(100+ weft crimp%age)/100
3. Crimp Percentage
Crimp %age = {(Warplength - Cloth length)/Cloth Length}* 100
Crimp %age = {(Warpwidth - Cloth width)/Cloth width}* 100
4. Cloth Cover Factor
1.
2.
3. Cloth Cover Factor = Wp.C.F +Wt.C.F. - {(Wp.C.F. -
Wt.C.F)/28}
5. Maximum EPI for particular count
1.
2.
3.
4. other design = (Ends /Repeat* 1/Yarn Diametre)/
(No of intersections/repeat+ ends/repeat)
5.
6. Warp Density
o
o
= <350

2. o WeaveDensity = 50+{(Warp Density - 100) * F.D -
100} /{(Weft Density - 100)* F.D - 100}
o Effective Weave Density = W. D x K of loom width x
K of Design
= < 72
Wp / filling - K Loom Width - K Weave Design - K
Cotton = 1.00 140 cm - 0.99 Plain1/1 = 1.00
Polyester/Cotton = 1.03 180 cm - 1.00 Twill 1/2 = 0.87
Viscose Filament = 1.17 190 cm - 1.01 Matt, Gabardine 2/2 = 0.82
Polyester Filament = 1.22220 cm - 1.02 Drill 1/3 = 0.77
250 cm - 1.08 Satin 1/4 = 0.69
330 cm - 1.15
360 cm – 1.20
7. To changethe count and the number of thread/ inch ,
keeping the same denseness of fabric
To changethe count without altering the denseness of the fabric
EPI in Exp.cloth= (EPI in exp.Cloth2/EPIin given cloth) * count
in given cloth
To changethe EPI without altering the denseness of the fabric
8. Warp requirement to weave the cloth
o Warp weight in grams/metre = {(Total Ends * 1.0936*
453.59* crimp%)/(840* count)} * wastage%
o Weft weight in grams/metre={(R.S. in inches * 453.59*
PPI)/(840* count)} * wastage % * crimp%
o Cloth length in metreswith given weft weight=( weft weight
in kgs * weft count * 1848 * 0.9144)/(PPI* R.S in inches)
For silk and Polyester

3. o Warp weight in grams/metre={(Total Ends * count
(Denier) )/9000}* wastage% * crimp%
o Weft weight in grams/metre= {(R.S in inches *
count(Denier)*PPI)/9000}*wastage% * crimp%
Allowance for count in bleached and Dyed fabric
1.Count becomes4%
2. FinerDyed counts become max 6% Coarser
9. Fabric Production Calculation
o Loom Speed = Motor RPM * (Motor Pully
Diametre)/(Loom PullyDiametre)
o Loom EffeciencyPercentage= (Actual
Production/CalculatedProduction)* 100
o Moisture Regain Percentage= {(YarnWeight - Dried Yarn
Weight)/DriedYarn weight} * 100
o Moistue Content Percentage= {(Yarn Weight - DriedYarn
Weight)/Yarnweight} * 100
Type of Yarn Moisture Regain % Moisture Content %
Cotton 8.50 7.83
Jute 13.75 12.10
Silk 11.00 9.91
Rayon, Viscose 11.00 9.91
Wool 17.00 14.50
Nylon 4.20 3.78
10.
o Warp Weight in Kg = (Total Ends * Tape Length in
metres)/(1693.6* Warp Count)
o Weft Weight in Kg = (R.S in centimetres * cloth length in
metres * PPI )/(4301.14*weft Count)
o Cloth weight in GSM = {EPI/WarpCout)+(PPI/Weft
count)}* 25.6

4. o oz (ounce ) per sq. yard = GSM(Gramsper sq. metre)/34
11.MaterialMeasurement
To calculatethe length of any rolled fabrics, this formula gives
the nearest accuracy.
L = {0.0655(D-d)(D+d)}/t
Where L = Length of material(Feet) t = Thickness of fabrics
(inches)
D = Outside diameter (inches) d = Inside diameter
(inches)
12. Weight of yarn in a cloth
The weight of cloth manufacturedon looms depends upon the
weight of yarns in thewarp and weft: ends/inch, picks/inch and
the weight of size on the warp. Therefore,
Cloth weight = Weight of warp+ Weight of weft + Weight of size
(All inlbs.)
Where as Weight of warp in lbs. = (Total No. of Ends * Tape
Length in Yards)/(840* warp yarn count)
Also