公开(公告)号：EP2792777A4

公开(公告)日：2015-09-02

申请号：EP12857461

申请日：2012-12-14

Applicant: TORAY INDUSTRIES

Inventor： KURODA AKITO ,  IYAMA YUJI ,  YAKAKE YOSHIKAZU

IPC: D04H3/153 ,  B01D39/16 ,  B03C3/28 ,  D04H1/4382 ,  D04H1/56 ,  D04H3/016 ,  D04H3/16

CPC classification number: B01D39/163 ,  B01D39/16 ,  B01D2239/064 ,  B01D2239/1233 ,  B03C3/28 ,  D04H1/4382 ,  D04H1/56 ,  D04H3/016 ,  D04H3/153 ,  D04H3/16 ,  D04H13/001 ,  Y10T442/625 ,  Y10T442/626

公开(公告)号：EP2787108A4

公开(公告)日：2015-07-29

申请号：EP12853901

申请日：2012-11-27

Applicant: TORAY INDUSTRIES

Inventor： IYAMA YUJI ,  KURODA AKITO ,  YAKAKE YOSHIKAZU

IPC: D04H3/153 ,  B01D39/14 ,  B01D39/16 ,  D04H1/4382 ,  D04H1/56 ,  D04H3/016 ,  D04H3/16

CPC classification number: B01D39/14 ,  B01D39/16 ,  B01D2239/0435 ,  B01D2239/0622 ,  B01D2239/064 ,  B01D2239/1233 ,  B03C3/28 ,  B03C3/66 ,  D04H1/4382 ,  D04H1/56 ,  D04H3/016 ,  D04H3/153 ,  D04H3/16

Abstract: Provided are a mixed-fiber nonwoven fabric exhibiting a low pressure drop and an excellent collection efficiency and being especially suitable for air filters, and a filter medium using the mixed-fiber nonwoven fabric. The nonwoven fabric comprises mixed fibers having different fiber diameters. A group of fibers having a fiber diameter of 5.0 µm or less (fiber group A) is present at a volume fraction of 20 to 80 vol%, a group of fibers having a fiber diameter of 50.0 µm or more (fiber group B) is present at a volume fraction of 1 to 40 vol%, and a group of fibers having a fiber diameter of more than 5.0 µm and less than 50.0 µm (fiber group C) is present at a volume fraction of 0 to 79 vol%. The ratio of the median fiber diameter (B') of fiber group B to the median fiber diameter (A') of fiber group A (B'/A') is 35 or more.

公开(公告)号：EP3128071A4

公开(公告)日：2018-01-03

申请号：EP15774301

申请日：2015-03-20

Applicant: TORAY INDUSTRIES

Inventor： KURODA AKITO ,  HIROSE TOMOHARU ,  UENO MASARU ,  YAMANO KOJI ,  OKAJIMA KATSUYA ,  MATSUZAKI YUKIHIRO ,  MATSUOKA YU ,  NISHIMURA HAJIME ,  YANAGISAWA SATOSHI

IPC: D06N3/00

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: [Problem] The present invention provides artificial leather including an entangled fiber mass of ultrafine fibers and a polymeric elastomer and having a wet feel and an elegant consistent appearance similar to those of natural nubuck leather, and also provides a production method therefor. [Means of solution] Accordingly, the artificial leather of the present invention is 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：EP2985377A4

公开(公告)日：2016-12-21

申请号：EP14783202

申请日：2014-04-03

Applicant: TORAY INDUSTRIES

Inventor： KURODA AKITO ,  IYAMA YUJI ,  YAKAKE YOSHIKAZU

IPC: D04H3/007 ,  B01D39/16 ,  D04H3/153 ,  D04H3/16

CPC classification number: B01D39/163 ,  B01D39/1623 ,  B01D2239/0435 ,  B01D2239/0622 ,  B01D2239/064 ,  B01D2239/065 ,  B01D2239/1233 ,  B29C47/0004 ,  B29C47/0047 ,  B29C47/06 ,  B29K2023/06 ,  B29K2023/12 ,  D04H1/4291 ,  D04H1/54 ,  D04H3/153 ,  D10B2321/021 ,  D10B2321/022 ,  D10B2505/04

Abstract: The present invention provides a mixed fiber nonwoven fabric with both a small pressure loss and a high dust collection efficiency, particularly a mixed fiber nonwoven fabric that works effectively in air filters, and also provides a filter medium formed thereof. The mixed fiber nonwoven fabric according to the invention is a mixed fiber nonwoven fabric comprising at least two types of fibers, namely, fibers of polyolefin based resin component A and fibers of polyolefin based resin component B, a fiber group containing fibers of polyolefin based resin component A being referred to as first fiber group, the first fiber group having a number average fiber diameter of 0.3µm to 7.0 µm, part of the fibers of polyolefin based resin component B that have a fiber diameter in the range of 15µm to 100 µm and not less than 5 times the number average fiber diameter of the first fiber group being referred to as second fiber group, the fibers of the second fiber group maintaining a form of fibers and existing in the cross section of the mixed fiber nonwoven fabric at a rate of 7.0 fibers or more per millimeter of the cross-sectional length, the melting point of polyolefin based resin component B being lower by 5°C to 40°C than that of polyolefin based resin component A, and the number average fiber diameter of the mixed fiber nonwoven fabric as a whole being 0.3µm to 10 µm.