公开(公告)号：US20240158966A1

公开(公告)日：2024-05-16

申请号：US18552733

申请日：2022-03-18

申请人： MITSUI CHEMICALS, INC.

发明人： Shohei SAITA ,  Taiichirou ICHIKAWA ,  Hirotaka KANAYA

IPC分类号： D04H3/007 ,  D01F8/06 ,  D04H3/018 ,  D04H3/147 ,  D04H3/16

CPC分类号： D04H3/007 ,  D01F8/06 ,  D04H3/018 ,  D04H3/147 ,  D04H3/16 ,  D10B2321/021 ,  D10B2321/022 ,  D10B2401/06 ,  D10B2509/02

摘要： Provided is a spun-bonded nonwoven fabric including fibers formed of a resin composition that contains: a propylene polymer (A); and a polymer (B) which is at least one selected from the group consisting of polyolefins, other than the propylene polymer (A), and polyesters. The fibers have a sea-island structure. The fibers include fibers in which a ratio of island phases having a diameter of less than 0.32 μm among those island phases at a cross-section perpendicular to the axial direction of the fibers is 60% or higher on a number basis. In the spun-bonded nonwoven fabric, a ratio (SMB/SCB) of the tensile strength (SMD) in a machine flow direction (MD) with respect to the tensile strength (SCD)) in a direction (CD) perpendicular to the machine flow direction (MD) is from 2.0 to 5.1.

公开(公告)号：US20220119998A1

公开(公告)日：2022-04-21

申请号：US17435447

申请日：2020-03-04

申请人： MITSUI CHEMICALS, INC.

发明人： Yusuke SEKIOKA ,  Shohei SAITA ,  Kosuke OTA ,  Koichi SHIMADA ,  Taiichiro ICHIKAWA

IPC分类号： D04H1/4391 ,  D04H1/4382 ,  D04H1/544 ,  D04H1/64

摘要： A nonwoven fabric layered body includes a first nonwoven fabric layer including a crimped fiber (A), which is a fiber made of a thermoplastic polymer and which has an average crimp diameter of 800 μm or less; and a hydrophilic agent.