Melting device

(1) Function: The supply of solid materials, polymer melting, and quantitative melt extrusion.

(2) Three screw sections: feeding section, compression section and metering section.

(3) The working principle of the screw extruder is the division of the screw and the movement of the material in each area of the screw.

① Feeding zone (curing zone) isometric screw.

② In the first half (cooling zone), cooling water is passed through the jacketed coil or the inner core of the screw, <100℃ to prevent premature melting of the material and ring blockage to protect the screw drive mechanism from heat.

③ The second half (preheating zone) prevents sudden temperature changes from the feed zone to the compression zone.

④ Compression zone (melting zone) The gradual or abrupt screw melts the material (heating, shearing) and compressing (the volume of the screw groove becomes smaller); returning air or water vapor to the feeding zone.

⑤ Shallow screw such as measuring area (homogenization area).

Generally, the spinning machine itself has 4 functional areas.

① High polymer melting device: screw extruder. ②Melt transportation, distribution, spinning and heat preservation device: elbow, spinning box (melt distribution pipe, metering pump, spinning head assembly). ③Thread cooling device: spinning window and cooling sleeve. ④Wire collection device: wet oiling mechanism, guide wire structure, winding machine or wire receiving device.