公开(公告)号：US20170183815A1

公开(公告)日：2017-06-29

申请号：US15300101

申请日：2015-03-20

Applicant: TORAY INDUSTRIES, INC.

Inventor： Akito Kuroda ,  Tomoharu Hirose ,  Masaru Ueno ,  Koji Yamano ,  Katsuya Okajima ,  Yukihiro Matsuzaki ,  Yu Matsuoka ,  Hajime Nishimura ,  Satoshi Yanagisawa

IPC: D06N3/00 ,  B32B3/30 ,  B32B5/06 ,  B32B5/26 ,  D01D5/36 ,  D06N3/04 ,  D01F8/06 ,  D04H1/74 ,  D04H1/44 ,  D04H1/4291 ,  D04H1/435 ,  B32B5/08 ,  B32B5/02 ,  D01F8/14

CPC classification number: D06N3/0011 ,  B32B3/30 ,  B32B5/022 ,  B32B5/024 ,  B32B5/026 ,  B32B5/06 ,  B32B5/08 ,  B32B5/26 ,  B32B2250/20 ,  B32B2260/021 ,  B32B2260/046 ,  B32B2262/023 ,  B32B2262/0284 ,  B32B2262/12 ,  B32B2274/00 ,  B32B2437/00 ,  B32B2601/00 ,  B32B2605/003 ,  B32B2605/08 ,  D01D5/36 ,  D01F8/06 ,  D01F8/14 ,  D04H1/4291 ,  D04H1/435 ,  D04H1/44 ,  D04H1/74 ,  D06N3/0004 ,  D06N3/0006 ,  D06N3/0009 ,  D06N3/004 ,  D06N3/04 ,  D06N2201/0227 ,  D06N2201/10 ,  D06N2203/045 ,  D10B2501/00 ,  D10B2505/08 ,  D10B2505/12

Abstract: The present invention provides an artificial leather including an entangled fiber mass of ultrafine fibers having a monofilament fineness of 0.01 dtex or more and 0.50 dtex or less and a polymeric elastomer; wherein at least one surface is napped; the cross-sectional profile curve of the napped surface has an arithmetic mean height Pa of 26 μm or more and 100 μm or less; the arithmetic mean height Pa of the cross-sectional profile curve of the opposite surface is 20% or more and 80% or less of the cross-sectional roughness Pa of the napped side; the existence frequency of asperity peaks found in the cross-sectional profile curve of the napped surface is 1.8 or more and 20 or less per 1.0 mm; and a woven or knitted fabric lamination is present near the opposite surface at a depth position of 10% or more and 50% or less.

公开(公告)号：US11975281B2

公开(公告)日：2024-05-07

申请号：US17261352

申请日：2019-07-22

Applicant: TORAY Industries, Inc.

Inventor： Jun Yoshida ,  Koji Yamano ,  Yohei Nakano ,  Makoto Nishimura

IPC: B01D39/04 ,  B01D39/16 ,  D01F6/46 ,  D04H3/16 ,  D04H1/4382 ,  D04H3/007

CPC classification number: B01D39/163 ,  B01D39/04 ,  D01F6/46 ,  D04H3/16 ,  B01D2239/0627 ,  B01D2239/1233 ,  D04H1/43838 ,  D04H3/007

Abstract: The present invention is intended to provide a spunbond nonwoven fabric having low pressure loss, high collecting performance, and excellent processability and an air filter fabricated using the spunbond nonwoven fabric, the spunbond nonwoven fabric including fibers formed of a polyolefin-based resin, in which an average single fiber diameter of the fibers is 6.5 μm or more and 22.0 μm or less, a hindered amine-based compound represented by Formula (1) is contained at 0.1% by mass or more and 5% by mass or less, a melt flow rate (MFR) of the nonwoven fabric is 32 g/10 minutes or more and 850 g/10 minutes or less, and the nonwoven fabric is processed into an electret.