How to choose sewing thread?

Polyester Dope-dyed Yarn is the thread required for knitted clothing products, which can be divided into three categories: natural fiber, synthetic fiber sewing thread and mixed sewing thread. There are many kinds of sewing thread thickness, so how to divide the thickness of sewing thread? How to choose the thickness of sewing thread?

The thickness of the sewing thread is called differently according to the material:
For example, polyester staple fiber, how many strands are called, for example: 40S/2 (that is, 40 two strands) is what we usually sew clothes,
If it is polyester filament, it is generally called how many D and how many strands, for example: 150D/3 (that is, it is made of 150D three strands twisted together) Many people also call it as many strands, for example: 2 strands 3 strands 4 strands 6 9 shares, etc.

How to choose the thickness of sewing thread
① The bobbin volume of the lock stitch sewing machine is limited, and the use of thinner sewing thread can accommodate longer sewing thread, saving the time of changing the shuttle and achieving high work efficiency.
②The thin sewing thread is small in size and feels good in chain sewing.
③The sewing thread occupies a very small space during sewing, which causes less fabric deformation and sewing wrinkles.
④ Small needles can be used for fine sewing threads to avoid needle holes in the fabric.
⑤ The fine sewing thread can also reduce the prominent seam marks, making it trapped in the inner layer of the fabric surface and reducing the impact of wear and tear