General Sewing Information |
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Stitch Code Number |
Number of Yarn |
Number of Needles |
Stitch Type |
101 |
1 |
1 |
single needle chain stitch |
301 |
2 |
1 |
Lock Stitch |
304 |
2 |
1 |
Lock Stitch zig-zag |
401 |
2 |
1 |
Two thread chain stitch |
404 |
2 |
1 |
Two thread chain stitch zig-zag |
504 |
3 |
1 |
three thread overlock |
512 |
4 |
2 |
Four thread safety stitched overlock |
514 |
4 |
2 |
Four thread overlock |
515 |
4 |
2 |
Four thread chain safety stitched overlock |
516 |
5 |
2 |
Five thread chain safety stitched overlock |
606 |
9 |
4 |
Four needle Fletlok |
Yarn Twisting
Twisting a fiber is important in terms of the strength conditions of the process it will use. The number of twists in a yarn determines strength, elasticity, etc. It affects yarn properties such as A thread can be twisted in two directions. Twist is indicated by the letters “Z” and “S”. Twist calculation according to Köchlin;
T: twist
T/m: number of turns per meter
α : Twist coefficient
Formula for Tex: T/m = αtex/sqrt(tex)
Formula for Nec : T/inch= αsqrt(Ne)
Formula for Nec: T/m= αmsqrt(Nm)
Descriptions Transformation of values
atex : twist coefficient in Tex unit T/inç=T/m0.0254
ae : Twist coefficient in British system T/m = T/inç39.97
am : twist coefficient in the metric system
T/inç :turns per inch
T/m : number of turns per meter
Yarn Count Conversion Formulas
|
tex |
dtex |
den |
Nm |
Nec |
Tex |
|
Dtex/10 |
den/9 |
1000/Nm |
590.54/Nec |
dtex |
10 x Tex |
|
den/0.9 |
1000/Nm |
5905.4/Nec |
den |
9 x Tex |
0.9 x dtex |
|
9000/Nm |
5314.9/Nec |
Nm |
1000/tex |
10000/dtex |
9000/den |
|
Nec x 1.6934 |
Nec |
590.54/tex |
5905.4/dtex |
5314.9/den |
Nm x 0.5905 |
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