Mostly, 100% Sewing Thread material is divided into polyester and rayon. Polyester thread is divided into 120d, 108d, and 75d rayon is divided into 120d, 75d, and 50d. People who don't know at all don't know how to choose, let's find out today.

Anyone who has used 100% Sewing Thread material knows that usually, the specification of rayon embroidery thread is 120D/2, while the specification of 100% Sewing Thread material polyester embroidery thread is marked as 108D/2 by some manufacturers and 108D/2 by some manufacturers. It is 120D/2, but in general, the marking methods of the two are correct, but the angle of understanding is different.

From the dyeing process of 100% Sewing Thread material, understand the difference between the specifications of polyester embroidery thread and rayon embroidery thread.

Polyester 100% Sewing Thread material is dyed at high temperature and pressure. After high temperature and high pressure, polyester yarn has a certain shrinkage, so after dyeing, the thickness of 108D polyester yarn is the same as that of 120D rayon. The dyeing of rayon embroidery thread is under normal temperature and pressure conditions, and the shrinkage of rayon is small and can be ignored.

Therefore, the thickness of 108D/2 polyester embroidery thread and 120D/2 rayon embroidery thread is the same, which is why 108D polyester thread must be used when making polyester embroidery thread, otherwise, the thickness of polyester embroidery thread will be the same as that of artificial silk. Silk embroidery threads vary in thickness. That is to say, 108D/2 polyester embroidery thread means that the specification of polyester yarn is 108D, and the final embroidery thread is still 120D.

So when a 100% Sewing Thread manufacturer tells you that their polyester embroidery thread is 108D/2, you can safely use it as a 120D/2 embroidery thread. Conversely, if a 100% Sewing Thread manufacturer tells you that their 100% Sewing Thread material is 120D, be careful, because after dyeing, the embroidery thread will become thicker than 120D. "