NOVELTY - The method involves forming jack for clearance adjustments (5) for fiber web by wet forming-into-sheets process and bonding the jack to Yankee dryer (1) by pressure of touch roll (4). The air cooling of the touch-roll position of thickness adjustment necessary section is carried out by flat-type air nozzle (8) arranged in width direction by upper portion of the touch roll. The air volume adjustment is carried out by thickness profile of width direction by which continuous measurement is carried out and thickness profile is controlled.    USE - Manufacturing method of nonwoven fabric of battery-cell separator (all claimed) e.g. lithium ion battery separator for alkali secondary battery such as nickel-cadmium battery, nickel-zinc battery and nickel-hydrogen battery used in electric tool, electric-power-assisted bicycle, cordless telephone, notebook personal computer, audio instrument, hybrid vehicle and electric vehicle. Can also be used in wiper, filter, separation-membrane support structure, poultice base material, gauze, interlining structure, sanitary material, mask, paper diaper, base material for carpet, building material sheet, sheet for separator for capacitor, interior material for motor vehicle, sound-insulation damping material, base material for tape, civil engineering material, packaging material, coffee filter, water draining bag, teabag, kitchen paper and sheet for handicraft.    ADVANTAGE - The sheet-forming stability at the time of fiber web is formed by wet forming-into-sheets is ensured. The weaving and the winding wrinkles generated at the time of nonwoven fabric manufacture are prevented. The strength and liquid maintain property of the nonwoven fabric are improved. The durability of the battery-cell separator is improved.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) a nonwoven fabric containing polyolefin fiber; and    (2) a battery-cell separator has nonwoven fabric which is hydrophilized by sulfonation.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view illustrating pressure-processing and winding up the nonwoven fabric dried with drying machine.    Yankee dryer (1)    Touch roll (4)    Jack for clearance adjustment (5)    Air nozzle (8)    Winding apparatus (9)