Thread Consumption

Machine Wise Sewing Thread Consumption PER Inch:

From this post you will get information regarding the sewing thread consumption depending on type of Machine :
Machine Name   Classification    Require thread/inch
Plain Machine,        1 Needle,                   2.5"   
Plain Machine         2 Needle                     5" 
Over lock               3 Thread                  13.25" 
Over lock               4 Thread                  16.75" 
Over lock               5 Thread                  18.75" 
Flat lock                 3 Thread                  16.75" 
Flat lock                 5 Thread                  22.25" 
      
Bar tack stitching                          7" Generally P/Operation
Button hole stitching                     7" Generally Per Hole
Button Attaching (2 hole)                 3" Per button
Feed of the ARM                           7" For one needle
Kanchai Stitching                          7" For one needle
Back Tape Stitching                      7" For one needle

After this you must include another 25% sewing thread before place the work order.

CALCULATION OF GSM:

Learn Apparel Merchandising,  Dear All,

GSM means the weight in gram per square meter of fabric.GSM is a very important parameter for specified a certain quality of knitted fabric. The production of knitted fabric is calculated in weight. The GSM cutter is very popular and easy usable GSM testing instrument used in most knitted factory. But the construction of this cutter is very simple. It is circular disk of 100 square cm area with sharp blade attached to its edge. So 100 square cm of fabric can easily cut by it and weighted at the electric balance to get GSM reading.

There are two formulas for calculating the GSM of a knitted fabric

First formula is as under:

               Course per inch X Stitch length X 39.37 X 39.37 X Tex

GSM =    ----------------------------------------------------------------------

                                               1000 X 1000

AND,

                WPI X CPI X SL(mm)

GSM =    ----------------------------- X 0.9155

                         Count(Ne)

CALCULATION OF WALES PER INCH (WPI):

We calculated the number of Wales in 10 inch fabric unraveling the yarn. Then we divide the no of total Wales by 10 inch to getting the Wales per inch.

CALCULATION OF COURSE PER INCH (CPI):

We calculated the number of course in five inch with the help of counting glass and needle. Then we divide the total no of course by five inch to getting the course per inch.

MEASUREMENT OF STITCH LENGTH (SL mm):

Stitch length is theoretically a single length of yarn which includes one needle loop and adjacent needle loops on either side of it. Loop exits in course in course length and it is that which influence fabric dimension and other properties including weight.

In order to determine the stitch length, we count 100 no Wales or stitch and count its length by hanging the yarn on the stitch counter. The reading is found in mm unit.