Thread Consumption Methods
In today’s aggressive marketplace, there is a want for tight price control. A practical estimation of practicable thread necessities for unique garment patterns or contracts will now not solely give up up saving you money, however additionally allow you to use a most effective thread for the equal cost, thereby no longer compromising on garment quality.
Several elements decide the extent of thread consumption in any sewn product, such as sew type, seam type, fabric thickness, wide variety of layers, building and SPI (stitches per inch).
However, these elements are no longer regular with the one-of-a-kind fashion preferences. Hence, thread consumption is in no way widespread for sewn product classes such as shirts, trousers and footwear.
There are two strategies usually used to calculate the quantity of thread in a seam and for this reason the thread consumption in the sewn product:
By measuring the genuine quantity of thread consumed
By calculation the usage of thread consumption ratiosThread Consumption Methods
In today’s aggressive marketplace, there is a want for tight price control. A sensible estimation of practicable thread necessities for precise garment patterns or contracts will now not only give up up saving you money, however additionally allow you to use a most useful thread for the identical cost, thereby now not compromising on garment quality.
Several elements decide the extent of thread consumption in any sewn product, such as sew type, seam type, cloth thickness, wide variety of layers, building and SPI (stitches per inch).
However, these elements are no longer steady with the special fashion preferences. Hence, thread consumption is in no way general for sewn product classes such as shirts, trousers and footwear.
There are two techniques usually used to calculate the quantity of thread in a seam and consequently the thread consumption in the sewn product:
By measuring the proper quantity of thread consumed
By calculation the use of thread consumption ratios
1. Measuring Actual Thread Consumed
A designated size of a given seam is measured and then the thread is pulled out of this length. We can use the quantity pulled out of this detailed size to calculate the ratio of thread fed on in the whole seam. By dividing the quantity of thread by way of the seam length, we get the ratio of thread consumed. If we multiply this issue instances the whole size of seam, we can decide the complete thread fed on for that seam.
Example:
Length of seam = one hundred cm (1 metre)
Stitch type 401 = 2-Thread Chain sew
Length of seam for which thread is eliminated = 15 cm
Needle thread eliminated = 19.5 cm
Needle thread issue = 19.5/15 = 1.3
Looper thread eliminated = sixty two cm
Looper thread aspect = 62.0/15 = 4.1
Total Needle thread = a hundred cm x 1.3 = one hundred thirty cm
Total Looper thread = a hundred cm x 4.1 = 410 cm
Total thread fed on = a hundred thirty + 410 = 540 cm
Add 15% wastage* = 540 cm x 1.15 = 621 cm
*Generally, 10% to 15% wastage of thread is delivered to the consumption derived. This wastage happens due to shop-floor prerequisites like laptop running, thread breakage, repairs, etc. The above instance suggests the whole thread ate up for one kind of sew category in a garment. By following a comparable procedure, you can calculate the thread ate up for distinct stitching operations in a garment.
2. Thread Consumption Ratios
The less complicated approach is to use the typically relevant Thread Consumption Ratios for the quite a number sew sorts that are listed in the desk below. By concerning these ratios to the size of seams the usage of every sew type, whole thread consumption can be calculated.
Note:
The above ratios are arrived at with a sew density of 7 stitches per cm (18 stitches per inch).
These ratios are the prescribed minimal in normal prerequisites and marginally differ with the elements affecting thread consumption.
A sure proportion of wastage is to be brought to the above ratios as per keep ground conditions. It might also differ from 10% to 15%.
Example:
Length of seam = one hundred cm (1 metre)
Stitch type 401 = 2-Thread Chainstitch
From the table, complete thread utilization per cm of seam = 5.5 cm
Total thread consumption = a hundred cm x 5.5 = 550 cm
Estimated Needle thread = 550 x 0.25 = 138 cm
Estimated Looper thread = 550 x 0.75 = 412 cm
Add 15% wastage = 550 cm x 1.15 = 633 cm of thread per seam
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