Spun Bonded Nonwoven Fabric, Filter Media For Dust Collector Pleated Filter, Dust Collector Pleated Filter, And High Airflow Pulse Jet Dust Collector

Abstract: This spun-bonded nonwoven fabric is constituted from a thermoplastic continuous filament comprising a high-melting-point component and a low-melting-point component, the stiffness in the MD direction of the spun-bonded nonwoven fabric being 40-80 mN inclusive, and in a cross section of the nonwoven fabric, the thickness tA from one surface to the other surface of a non-fused projecting part, the thickness tB from one surface to the other surface of a recessed section obtained by being fused, and distances from the one surface of the projecting part to the one surface of the recessed section, the distances being defined as tC and tD (where tC < tD), are in the relationships shown in formulae (1) and (2) below. 0.5 = 1 - tB/tA < 1.0 (1) 0.65 < tC/tD < 1.0 (2)

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