The dilemma of choosing between "rayon" and "polyester" when starting machine embroidery...
To prevent issues like "the embroidery doesn't look as imagined" or "the color faded after washing,"
we'll explain the differences between their characteristics.
1. The classic machine embroidery thread material: Rayon – elegant luster and softness
Rayon machine embroidery thread is a classic material for machine embroidery, widely used by professionals.

Characteristics: Rayon, also known as "artificial silk," has a moist, elegant sheen similar to natural silk.
Texture: The thread is soft and compatible with high-speed embroidery machines, allowing for beautiful rendering of intricate designs.
Why professionals choose it: Heat-cut compatibility
Its ease of processing, not just its aesthetic appeal, is another reason professionals choose it.
Rayon is compatible with "heat-cut processing," making it ideal for productions that require heat cutting, such as the borders of patches.

2. Polyester for uniform embroidery: strength and vibrancy
Polyester machine embroidery thread (Silmate) is also a tough material often used in machine embroidery.

Characteristics: Resistant to friction and washing
Texture: Slightly stiffer than rayon. Vibrant colors. Fluorescent colors also available.
Recommended uses: Children's clothing and uniforms that are frequently washed, as well as embroidery on hats and bags.
3. [Comparison Chart] Quick guide to usage differences
| Characteristic | Rayon | Polyester |
| Luster | Elegant, subtle luster | Vibrant, strong luster |
| Softness | Very soft | Slightly stiff |
| Washing/Chlorine | Care needed (bleach not recommended) | Widely usable |
| Heat (Ironing) | Strong | Slightly weak (low temperature recommended) |
4. How to choose when in doubt
・If you prioritize the "beauty" and "texture" of the finish → Rayon
・If you prioritize "durability" for everyday use and "colorfastness" → Polyester