Patent ID: 8420004
Filing Date: 2013-04-16
Classification: D01D,D01F,D04H

Abstract:
1. A meltblown wetlaid method for producing non-woven fabrics with continuous filament from natural cellulose, comprising the steps of: (a) selecting wood pulp as raw material; (b) mixing the wood pulp of step (a) with N-methylmorpholine N-oxide (NMMO) as a dissolving solvent and 1,3-phenylene-bis 2-oxazoline (BOX) as a stabilizer, blending the mixture, and dissolving the mixture at a temperature of 60 to 80° C.; (c) heating the mixture of step (b) to a temperature of 80 to 120° C. for 5 to 10 minutes to decrease the water content thereof down to 5 to 13% to form a homogenized mucilaginous dope; (d) extruding the homogenized mucilaginous dope of step (c) out of a spinneret by the meltblown method to form a filament bundle; (e) Coagulating the filament bundle with regeneration by ejecting mist aerosol of water; and (f) rinsing the coaglulated filament bundle of step (e) with water; and (g) hydro-entangled needle punching, drying, and winding-up the rinsed coaglulated filament bundle of step (f) to produce the nonwoven fabrics with continuous filament.