SPUNBOND NONWOVEN FABRIC, FILTER MEDIA FOR DUST-COLLECTOR PLEATED FILTER, DUST COLLECTOR PLEATED FILTER, AND LARGE AIR-BLAST PULSE-JET-TYPE DUST COLLECTOR

• Main Authors: YOSHIDA, Jun, KITAMURA, Koji, MIZOGAMI, Shinobu
• Format: Patent
• Language: English; French; German
• Published: 14.06.2023
• Subjects: BRAIDING; COTTON-WOOL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS; KNITTING; LACE-MAKING; MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL; NON-WOVEN FABRICS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TEXTILES; TRANSPORTING; TRIMMINGS; WADDING

A spunbond non-woven fabric according to the present invention is a spunbond non-woven fabric that includes a thermoplastic continuous filament including a high melting point component and a low melting point component. A CV value of air permeability of the spunbond non-woven fabric is 15% or less, and bending resistance in the machine direction of the spunbond non-woven fabric is 40 mN or more and 80 mN or less. In a non-woven fabric cross-section, a thickness from one surface to another surface of the non-bonded projected part is determined to be tA, a thickness from one surface to another surface of the bonded recessed part is determined to be tB, and respective distances from one surface of the projected part to one surface of the recessed part are determined to be tc and tD (tc < tD) and the spunbond non-woven fabric has a relation represented by the following formulas (1) and (2): 0.5≤1−tB/tA<1.00.65<tC/tD<1.0