A spinning machine is a machine that makes a fiber-forming polymer solution or melts from filaments. According to different fiber spinning methods, spinning machines are divided into three types: wet spinning machine, melt spinning machine and dry spinning machine.
Wet spinning machine
Suitable for spinning viscose fibers, acrylic fibers, nylon, etc. The main feature is that the polymer solution is extruded from the spinner and coagulated into the nascent fiber in the coagulation bath. The rotation speed is low, often below 100 m/min, and the high-speed rotation speed can reach about 200 m/min. Wet spinning machines are divided into short fibers and long fibers.
Molten spinning machine
Used in polyester, nylon and polypropylene spinning equipment. It is characterized by the fact that the molten thin stream is converted into fibers when it meets the cold air, and the cold air is uniformly blown into the thin stream after passing through the high-efficiency filter, regulating valve and deflection device. The rotation speed is relatively high, generally 1500-600 m/min. There are also two types of melt spinning machines.
Dry spinning machine
is used in the production of acrylic and nylon threads. The rotating dope enters the tunnel through the filter, measuring pump and spinner from the injection pipe. The formed drop meets the hot air in the tunnel, the solvent evaporates and the polymer solidifies into fibers in the drop, and then the spare is wrapped to a certain amount. Of the rolls, the dry spinning speed is generally 200-800 meters per minute. To meet the needs of specific spinning processes, wet and dry spinning machines appeared in the 1970s.