# How do you calculate ppm in weaving?

Contents

## How do you calculate weaving production?

Fabric Production Calculation

1. Loom Speed = Motor RPM * (Motor Pully Diametre)/(Loom Pully Diametre)
2. Loom Effeciency Percentage = (Actual Production/Calculated Production )* 100.
3. Moisture Regain Percentage = {(Yarn Weight – Dried Yarn Weight)/Dried Yarn weight} * 100.

## What is ppm in loom?

PPM = Crank shaft RPM x No of Tappet. = 60 x 3 = 180. ………………………………. 180 80 60. Loom Production = ————— x ———– x ————- yards/hour.

## How do you calculate weaving efficiency?

Example:

1. Loom speed = 180 picks/min.
2. Repair of warp breaks per 100,000 picks = 20 occasions.
3. Repair of weft breaks per 100,000 picks = 15 occasions.
4. Other repairs with loom stopped per 100,000 picks = 6 occasions.
5. Average warp-repair time = 0.85 min.
6. Average weft-repair time = 0.30 min.

## How is weaving cost calculated?

Suppose that we receive following fabric parameters which are required to calculate the fabric cost:

1. EPI = 100.
2. PPI = 80.
3. Warp count = 40 s cotton.
4. Weft count = 40 s cotton.
5. Fabric width=120 inches.
6. Warp crimp = 11 ℅
7. Weft crimp = 4℅
8. Waste percentage= 3℅

## How do you calculate construction fabric?

Fabric Weight Calculation in GSM (Woven Fabric)

1. Fabric Construction is a term in which some fabric detailing are available such as.
2. EPI (Ends per inch –warp)
3. PPI (Picks per inch – weft)
4. Warp count.
5. Weft count.
6. fabric width (in inches) .
7. Here , EPI = 92.
8. So total number of ends = 92×39.37.
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## What is GSM formula?

Multiply the average weight of swatches by 100 to calculate the GSM of the sample fabric. (Normally, the area of round GSM cutter is 1/100 square meters.)

## What is RPM in weaving machine?

The world’s fastest jet loom

The figure “2,105 rpm” means that 2,105 weft threads are inserted per one minute.

## What is ppm in textile?

Pre-Production Meeting (PPM)

## How is knitting production calculated?

Needle Calculation Formula:

Single bed flat knitting m/c’s needle = width× gauge. GSM = {WPI× CPI × (39.37)2×stitch length (mm) ×Tex /1000× 1000} g/m2. Stitch density = (WPI × CPI) inch-2 = (WPC ×CPC) cm-2. No of sinker = No of needle.

## How is PPI and EPI calculated?

It is found out by counting the number of threads in the warp and weft in a square inch of the fabric. Fabric construction is written as “136 x 96”, which means that the fabric has 136 Ends per inch (EPI) and 96 Picks per inch (PPI). Alternatively this can be written as EPI x PPI = 136 x 96.

## How do you calculate warp and weft?

To calculate the amount of weft, you need to know warp width, the number of picks per inch, and the length of the weaving. I usually add ten percent to that number for weft take-up. (So for an 8″ wide warp woven at 20 picks per inch for 65″: 8″ x 20 x 65″ = 10,400″ divided by 36″/yd = 288 yd plus 10% = 317 yd.

## What is warp count?

The number of warp yarns per one inch or centimeter of fabric. This is also called sley, warp end count, ends per inch, or ends per centimeter.

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