Bonded nylon 6.6 is also called polyamide 6.6, PA6,6 or nylon 66, is a strong sewing thread for leather goods.

‌
Bonded nylon 6.6 thread refers to a non-filament-separating sewing thread. Simply put, if twisting a conventional sewing thread clockwise by hand causes the strands to separate, it is a regular soft sewing thread; if the strands remain intact after twisting, it is bonded nylon 6.6 thread. In other words, bonded nylon 66 is a type of sewing thread whose strands are permanently fused together to prevent separation.

Nylon 6.6 Bonded Thread 210D/3

Types of Bonded Nylon 6.6 Thread‌

1. ‌By Material‌

- ‌Nylon 6.6 Bonded Thread‌: Produced by twisting continuous filament of high tenacity nylon 66 into a multi-strand sewing thread, which is then fused together using the bonding process.

- ‌Nylon 6 Bonded Thread‌: Similar type as bonded nylon 6.6, but twist by another fiber of nylon 6 in continuous filament high tenacity. Bonded nylon 6 has a lower cost.

- There is another type of bonded thread, ‌Polyester Bonded Thread‌: Manufactured similarly to nylon bonded thread, but using continuous polyester filament twisted into a multi-strand thread before bonding.

2. ‌By Production Process‌

‌Externally Bonded Nylon 6.6 Thread‌: Produced by passing conventional multi-strand thread through a heated adhesive bath via bonding machinery. The adhesive coats and fuses the strands externally.

‌Internally Bonded Nylon 6.6 Thread‌: Created by incorporating a low-melting-point thermoplastic fiber into the core during the twisting process. Heat treatment melts the thermoplastic fiber, bonding the sewing thread strands internally.

 Bonded Nylon 6.6 Sewing Thread    Bonded Polyamide 6.6 Sewing Thread   Nylon 6.6 Bonded Thread

 Bonded Polyester Sewing Thread     High Tenacity Filament