| 摘要 |
PROBLEM TO BE SOLVED: To obtain a highly air-permeable nonwoven fabric with excellent rigidity, tensile strength and pleatability. SOLUTION: This highly air-permeable nonwoven fabric is composed of conjugate-type continuous fiber consisting of a high-melting polymer and a low-melting polymer incompatible with the high-melting polymer and having a melting point 15-180 deg.C lower than that of the high-melting polymer, and made up of hot contact-bonded regions yielded by mutual hot contact bonding of the conjugate-type continuous fibers through the softening or melting of the low-melting polymer and another kind of regions where the low-melting polymer flowed and aggregated at the intersections of the conjugate-type continuous fibers. This nonwoven fabric has an air permeability of >=80 cc/cm<2> /s. |
