Method for pretreating recovered cotton fibers used in the production of shaped bodies from regenerated cellulose

摘要

Manufacture of shaped bodies from regenerated cellulose, including metal removal and oxidative bleaching stages of recovered cotton fibers or pulp made from recovered cotton fibers, and characterized by effective metal reduction and adjustment of degree of polymerization and whiteness A method of pretreating recovered cotton fibers used in the process. The recovered cotton fibers treated according to the described method may be used alone as a raw material for producing a molded body from regenerated cellulose, or may be used by mixing with conventional dissolving pulp. This method enables technically smooth, safe and economically feasible spinning by the viscose method or lyocell method. Therefore, the present invention provides an efficient recycling route for cotton waste.