Method for producing cellulose fiber

Abstract

The present invention provides a cellulose fiber having high strength, high modulus of elasticity, and low shrinkage properties, and excellent performance in preventing fibrillation and adhesion to rubber. It is produced by dissolving 0.1% to 10% by weight of salt and polyvinyl alcohol in a liquid concentrated NMMO solution to produce an NMMO solution; mixing, swelling, and dissolving the NMMO solution and cellulose powder to produce a cellulose solution Extrude and spin the cellulose solution through a spinning nozzle with 500 to 2000 spinneret holes, and then solidify it through an air layer and a coagulation bath to obtain multifilaments; wash the obtained multifilaments with water, Drying, oiling and coiling.

Description

technical field

[0001] The present invention relates to cellulose fibers having high strength, high modulus of elasticity, and low shrinkage characteristics while being excellent in both fibrillation prevention performance and adhesion to rubber. Specifically, the present invention relates to cellulose fibers manufactured by the following method, Cellulose fiber excellent in strength and modulus of elasticity and improved in fibrillation prevention performance by dissolving salt together with polyvinyl alcohol in liquid concentrated N-methylmorpholine-N-oxide (hereinafter referred to as NMMO) solution, the solution and cellulose powder are mixed, swollen and dissolved, and then spun through a spinning nozzle with 500-2000 spinneret holes. Background technique

[0002] Although cellulose has a high affinity with other substances, it is difficult to dissolve it in general solvents because of the crystalline structure formed by strong hydrogen bonds between molecules or within ...