Patent ID: 8366988

Claim:
A spunbond wetlaid method for producing a non-woven fabric 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, grinding, blending and dissolving the mixture at a temperature of 50 to 80° C.; (c) heating the mixture of step (b) to a temperature of 80 to 120° C. for 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 out of a spinneret bank of grouped spinnerets by a spunbond method to form a filament bundle; (e) stretching the filament bundle under quench conditions; (f) coagulating the filament bundle with regeneration in a coagulating solution; (g) stretching the filament bundle under high pressure by an air draw-off machine; (h) collecting the filament bundle on a collecting net to form a nonwoven web; and (i) water rinsing, hydro-entangled needle punching, drying, and winding-up the nonwoven web to produce the nonwoven fabric with continuous filament.