Usage and classification of wet spinning machine
The wet spinning machine is suitable for spinning viscose fiber, acrylic fiber, vinylon, etc. The main feature is that the polymer solution is extruded from the spinneret and coagulated into the nascent fiber in the coagulation bath. The spinning speed is low, often below 100 m/min, and the high-speed spinning speed can reach about 200 m/min. Wet spinning machines are divided into short fibers and long fibers.
1. Short fiber spinning machine: the spinning dope is introduced from the infusion pipe, accurately metered by the metering pump, filtered by the filter into the spinneret, and extruded from the spinneret hole into the coagulation bath, and the nascent fiber passes through the godet after coagulation Converged into a bundle and then washed or stretched. The short fiber spinning machine is characterized by a large number of holes in the spinneret (plate), usually 3,000 to tens of thousands of holes.
2. Filament spinning machine: Different from the short fiber spinning machine, the winding mechanism of the solidified thread is added. The thread from the coagulation bath passes through the godet after washing, and enters the high-speed rotating centrifugal tank through the up and down reciprocating guide wire funnel. Such a spinning machine is called a centrifugal tank spinning machine; if the thread is wound on a bobbin through a godet, it is called a bobbin spinning machine; if there is some post-processing before winding, It is called a semi-continuous spinning machine; if all procedures of spinning and post-processing are completed continuously on the spinning machine, it is called a continuous spinning machine. The production of viscose cords mostly uses continuous spinning machines. Spinnerets for filament spinning generally have 150 holes or less, and the number of holes for spinning cord fibers is up to 3000 holes.
1. Short fiber spinning machine: the spinning dope is introduced from the infusion pipe, accurately metered by the metering pump, filtered by the filter into the spinneret, and extruded from the spinneret hole into the coagulation bath, and the nascent fiber passes through the godet after coagulation Converged into a bundle and then washed or stretched. The short fiber spinning machine is characterized by a large number of holes in the spinneret (plate), usually 3,000 to tens of thousands of holes.
2. Filament spinning machine: Different from the short fiber spinning machine, the winding mechanism of the solidified thread is added. The thread from the coagulation bath passes through the godet after washing, and enters the high-speed rotating centrifugal tank through the up and down reciprocating guide wire funnel. Such a spinning machine is called a centrifugal tank spinning machine; if the thread is wound on a bobbin through a godet, it is called a bobbin spinning machine; if there is some post-processing before winding, It is called a semi-continuous spinning machine; if all procedures of spinning and post-processing are completed continuously on the spinning machine, it is called a continuous spinning machine. The production of viscose cords mostly uses continuous spinning machines. Spinnerets for filament spinning generally have 150 holes or less, and the number of holes for spinning cord fibers is up to 3000 holes.
