Melt spinning structure

Abstract

The invention provides a melt spinning structure. The melt spinning structure comprises a melt extruding machine, a spinning nozzle and a cooling box body, wherein the spinning nozzle is arranged at the bottom of the melt extruding machine; the nozzle of the spinning nozzle points downwards and is placed into the cooling box body; the spinning nozzle is a cylindrical hollow pipe; through holes are uniformly formed in the circumferential direction of the inner wall of the spinning nozzle; the through holes are communicated with the an air injection device; the spinning nozzle is internally and coaxially provided with a heat conducting ring located between the through holes and the nozzle; the outer side of the heat conducting ring has no contact with the inner wall of the spinning nozzle; the heat conducting ring is internally and uniformly provided with a semiconductor refrigerating sheet; a cold surface of the semiconductor refrigerating sheet is located at the inner side of the heat conducting ring; and the hot surface of the semiconductor refrigerating sheet is located at the outer side of the heat conducting ring. As the melt is full of bubble gaps, heat-shielding performances of the melt are increased while the use amount of the melt is reduced.

Description

technical field [0001] The invention relates to the field of melt spinning equipment, in particular to a melt spinning structure for improving melt spinning performance. Background technique [0002] One of the main forming methods of melt spinning chemical fibers, referred to as melt spinning. The main varieties of synthetic fibers such as polyester, nylon and polypropylene are produced by melt spinning. The main features of melt spinning are high winding speed, no need for solvents and precipitants, simple equipment, and short process flow. Fiber-forming polymers that have a melting point below their decomposition temperature and can be melted to form a thermally stable melt can be formed by this method. The preparation of chemical fibers is usually made of natural or synthetic polymers or inorganic substances into a spinning melt or solution, then filtered, metered, extruded from a spinneret (plate) into a liquid stream, and then Solidified into fibers. The fiber at t...

AI Technical Summary

Problems solved by technology

[0003] Because the chemical fibers produced by melt spinning have the advantages of bright colors, soft texture, drape, smooth and comfortable, they are widely used. poor thermal insulation

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