5 Types of Thread Structures: Spun Polyester, Core-Spun, Continuous Filament, Monofilament….

Common Types of Thread Structures

Manufacturers produce several distinct structural types to meet specific garment needs. The most frequently used categories include spun polyester, core-spun, and continuous filament threads. Spun polyester feels like cotton and is cost-effective, while continuous filament offers a smooth, glossy finish ideal for leather or heavy-duty fabrics. Selecting the correct type ensures that the thread’s texture complements the fabric rather than fighting against it, preventing issues like seam puckering.

• Spun Polyester is widely used for standard garments due to its low cost and matte finish.
• Core-spun threads provide superior strength for denim and workwear applications.
• Continuous Filament eliminates lint buildup in the machine and offers high tenacity.
• Recognizing these distinctions allows you to match the thread’s physical properties to your specific manufacturing requirements.

When dealing with heavy-duty applications like denim or workwear, core-spun threads are the superior choice because they combine a high-tenacity polyester core with a cotton or polyester wrapper. This wrapper protects the core from needle heat, significantly reducing breakage rates on thick layers. Conversely, for lingerie or swimwear, textured nylon threads provide the necessary softness against the skin and high elasticity to prevent seam cracking when the fabric stretches. Using a standard spun thread on high-stretch garments is a dangerous mistake that leads to immediate seam failure upon wearing.