WATER-DISINTEGRABLE NONWOVEN FABRIC

摘要

PROBLEM TO BE SOLVED: To provide a water-disintegrable nonwoven fabric that can retain the strength withstanding the operation such as washing and the like in the dried or moisturized state and disintegrates the fibers constituting the woven fabric from each other in a large amount of water flow. SOLUTION: The first web formed by subjecting a mixed fiber comprising 20-80 wt.% of the first regenerated cellulose fibers and 80-20 wt.% of wood pulp fibers to the wet type paper-making process and the second web layer formed by subjecting a mixed fiber comprising 20-80 wt.% of the second regenerated cellulose fibers and 80-20 wt.% of wood pulp fibers to the wet type paper- making process are laminated on the perforated and conveyable supporter and the laminated webs are treated with the high pressure columnar water flow from one face or from both faces to entangle the fibers into the integrated nonwoven fabric. In the resultant nonwoven fabric, the ratio (L/D) of the fiber lengths of the first and the second regenerated cellulosic fibers L1 and L2 in mm to the fiber diameters of the first and the second regenerated cellulosic fibers D1 and D2 in mm range from 135 to 1,750 and these L/D values satisfy the following formula: (L1 /D1 )>(L2 /D2 ).