PROCESS FOR THE PREPARATION OF NON-WOVEN FABRIC ARTIFICIAL LEATHER HAVING EXCELLENT DYEING

摘要

With such an alkali water solution as sodium hydroxide, a fiber collected body polymer of dope-dyed yarn non-woven fabric is completely dried up. Also, the additives is immersed in the water soluble solution mixed with polyurethane to be filled inside the non-woven fabric foam, and is coagulated in the proper density of the water soluble solution of a dimethylformamide for 10-30 minutes for the solvent to be extracted, and washed in the hot water, eliminating polyvinyl alcohol completely.