The main production processes of polyester monofilament mainly include one-step production process and two-step production process. Among them, high-speed spinning and high-speed drawing and twisting technology are used, which is a typical two-step process route and is currently the most used process route for the production of polyester monofilament. It is characterized by short process flow and high production efficiency. The spinning speed of high-speed spinning is 3000~600m/min, and pre-oriented yarn (POY) can be produced. At high winding speeds, the fibers have a certain degree of orientation and the structure is relatively stable. Drawing and twisting is an essential process in the production of polyester monofilament, which is called secondary molding. Stretching enables the structural units of the fiber to obtain a stable and stable orientation, thereby achieving the purpose of improving the physical and mechanical properties of the finished fiber.
The one-step production technology of polyester monofilament uses 8, 10 or 12-hole spinnerets to complete spinning forming, primary fiber drafting orientation, fiber heat setting and winding on the same machine at one time Wait for the technological process to obtain monofilament on the wound silk cake. The wound monofilament cake is then separated by a splitting machine to obtain polyester monofilament fiber.