Wet spinning equipment and preparation process for sea-island fibers

Abstract

The invention discloses wet spinning equipment for sea-island fibers and a preparation process, and the spinning equipment comprises an injection unit which comprises an injector and a needle head assembly; the coagulating unit comprises a coagulating bath; the collecting unit comprises a collecting roller, the injector comprises a first cavity and a second cavity, the first cavity and the second cavity are filled with the marine phase spinning solution and the island phase spinning solution respectively, and the needle head assembly comprises a first needle head communicated with the first cavity and a second needle head communicated with the second cavity. Wherein the multiple second needle heads are distributed in the first needle head at intervals, and the sea-phase spinning solution synchronously extruded from the first needle head and the second needle heads wraps the multi-strand island-phase spinning solution and injects the multi-strand island-phase spinning solution into the coagulating bath. According to the invention, the sea-island fiber is prepared by adopting wet spinning, and the equipment is simple and reliable in structure and convenient to operate, so that the preparation process is high in safety and low in cost; meanwhile, the solidification process of the spinning solution in the solidification bath can be stably controlled, and it is guaranteed that the generated sea-island fiber meets the preparation requirement.

Description

Technical field [0001] The present invention belongs to the technical field of island fibers, and in particular to a wet spinning apparatus for island fibers, and the present invention also relates to a process of preparation for island fibers. Background technique [0002] Island fibers refer to two or more of the high polymers for complex, distributed in the form of islands on the fiber section, where the component is dissolved when the component is dissolved. The island * # * component can be displayed from the packaged * # * sea * # * component, get the bundle-shaped fiber; vice versa, when dissolved * # * island * # * Component, * # * Sea * # * component can form a porous hollow fiber. Island fibers have excellent performance in other common fibers, such as fiber soft, good moisture absorption, good waterproof, and thermal insulation. [0003] At present, the preparation of the island fiber uses melt spinning, but the operating temperature required for melt spinning is high,...

AI Technical Summary

Problems solved by technology

[0003] At present, sea-island fibers are mostly prepared by melt spinning, but melt spinning requires high operating temperature and high voltage, the spinning process is cumbersome and complicated, and the preparation cost is high; The requirements are high, and a little negligence can easily cause safety accidents. Therefore, it is necessary to propose a spinning equipment and preparation process for preparing sea-island fibers safely and simply.

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