Novel spinneret plate for wet spinning non-woven fabric

Abstract

The invention discloses a novel spinneret plate for wet spinning non-woven fabric. The spinneret plate comprises a baseplate, multiple sets of mounting holes are formed in the baseplate, and spinneret cap units are arranged in all mounting holes respectively; reaction areas where auxiliary solidification bath lotion is fully in contact with a spinning solution are reserved between the adjacent spinneret cap units, the spinneret cap units comprise spinneret cap bodies which are matched with the mounting holes, and a plurality of spinneret holes which allow the spinning solution to squirt are formed in the spinneret cap bodies; the spinneret holes are distributed in the jet direction of the spinning solution and are all in a rectangular shape, rectangular spinneret units are formed, and all rectangular spinneret units are distributed according to the standard that the rectangular spinneret units are laminated with each other to form the tows with same thicknesses in the direction where even sheet-shaped tows form. Through structures of the rectangular spinneret units which are composed of the spinneret holes, the rectangular spinneret units are crosswise arrayed, it can be guaranteed that the thicknesses of the laminated tows, prepared by the spinning solution through all rectangular spinneret units, in the direction where the sheet-shaped tows form are even, and it can be guaranteed that the thicknesses of all parts of the finally obtained filament non-woven are identical.

Description

technical field [0001] The invention belongs to the technical field of spinning equipment, in particular to a novel spinneret used for wet spinning non-woven fabrics. Background technique [0002] Filament non-woven fabrics are widely used in medical and health care, agriculture, industry, automobiles and other fields due to their excellent performance. Compared with short-fiber non-woven fabrics, filament non-woven fabrics can make non-woven fabrics thinner and stronger. At present, the preparation of filament non-woven fabrics mainly includes spunbonding and wet spinning. The filament non-woven fabric is prepared by the spunbond method. After the polymer has been extruded and stretched to form continuous filaments, the filaments are laid into a web, and the web is then self-bonded, thermally bonded, and chemically bonded. Or a mechanical reinforcement method to make the web into a non-woven fabric. The main process steps of wet spinning are: spinning solution-coagulatio...

AI Technical Summary

Problems solved by technology

[0005] That is to say, the fiber filaments are obtained by wet spinning technology, and the filament non-woven fabrics are prepared by directly laying and needling the fiber filaments. The filament bundles obtained by the traditional wet spinning spinneret structure are not It is not a uniform sheet-like tow, but a strand of tow that cannot be stacked uniformly. The structure of the dry spinning spinneret or spinneret, the arrangement of the holes, and the processing size cannot adapt to wet spinning, and the cost If it is too high, the distance between the holes is too small to ensure that the strong alkali in the coagulation bath reacts fully with the acetic acid in the spinning solution, resulting in uneven internal and external strength of the coagulated fiber

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