1).Air Compressor and circulating Water System
The operating principle of air compressor: electric motor directly drives crank axle through coupling, and leads connecting rod, crosshead and piston rod, enabling piston to conduct advance and return movement in the cylinder stator of compressor, in order to complete inflow, compression, discharge and other processes.
Composition: compressor host machine, cooling system, regulating system, lubrication system, safety valve, gas tank, electric motor and its controlled equipment composition.
Effect of circulating water system: used to provide chilled water for air compressor and extruder.

2).Extruder.
Operating principle: material enters into the flight channel of screw from charge door. As the rotation of screw pushes the slicing forwards, making the slicing constantly absorb heat energy provided by heating installation. On the other hand, due to the shearing action between slicing and slicing, slicing and screw, sleeve frictions, and liquid layers, part of mechanical energy is converted to heat energy. During the ongoing process, slicing is gradually melted as melt mass as the temperature goes higher and higher. During the melting process, polymerized substance takes changes in temperature, pressure, viscosity and form, etc. It transforms from solid state (vitreous state) to elastomeric state. With the higher temperature, it appears plastic flowage, and becomes viscous flow state. The polymerized substance of viscous flow state is transmitted to melt mass pipes with certain pressure through screw’s propulsion and screw exit’s resistance.
Effect of screw extruder: squeeze, exhaust, melting and mixed homogenization of solid high polymer are conducted under constant temperature and pressure to quantitatively output high polymer melt mass.
Advantages of screw extruder: ① fast in melting. ② intense mechanical shearing. ③continuous renewal of heat exchange surfaces, more suitable for material with high viscosity. ④convenient output adjustment. 
Composition of screw extruder: ① melting extrusion device: Screw, sleeve. ② heating and cooling system: Cast-aluminum sleeve heater and water cooling jacket. ③ drive system: Variable speed electric motor and variable speed gearbox.

3) Quick coupling device: it is the equipment used to filtrate the melted polymerized substance, which internal has a round groove to put filtering net. The filtering net should be changed promptly (depending on extruder pressure) 

4) Spinning trunk: the effect of spinning trunk is to promote the chain breakage of polymerized substance melting. Also material has the same flow path and heat energy absorption in the spinning trunk. Finally, die head is squeezed by metering pump in constant quantification. In the whole spinning trunk, metering pump is one of the important compositions.
Metering pump: the high-precision building-block used in chemical fiber production
Effect: accurately measure, continuously convey melt mass of fibering high polymer, and produce the preset pressure to maintain the spinning melt mass overcome the resistance of spinning components or spinning jet.

5) Spinning jet: the internal has two parts of air channel and material channel (spinneret orifice). The top and bottom of material channel both have air channels, and there is a 60° angel between air channel and material channel, making the two airflow collide and form turbulence, impelling the melting polymerized substance squeezed by material channel to become fibre. 

6) Receiving device: a pair of electric motors separately drive optical axle and threaded shaft, reaching the purpose of mandrel stripping by the speed difference between optical axle and threaded shaft. 

7) Automatic cutting device: controlled by time and air pressure. Gas-tightness should be checked before utilization, and debugged to a normal state.