公开(公告)号：JP2019093367A

公开(公告)日：2019-06-20

申请号：JP2017227081

申请日：2017-11-27

Applicant: TORAY INDUSTRIES

Inventor： IYAMA YUJI ,  INABA TOMOO ,  HANE RYOICHI

IPC: B01D39/16 ,  B03C3/28 ,  D04H3/007 ,  D04H3/16

Abstract: 【課題】本発明は、高い塵埃捕集特性を有しながら、通気性に優れたエレクトレット繊維シートを提供する。【解決手段】本発明の耐熱性エレクトレット繊維シートは、非導電性繊維を90質量%以上含んでなるエレクトレット繊維シートであって、前記のエレクトレット繊維シートを構成する繊維中に結晶核剤が0.005〜1.0質量%含有されており、かつ示差走査熱量計(DSC)で測定される融点(Tm)と結晶化温度(Tc)の差(Tm−Tc)が、5〜45℃であることを特徴とするエレクトレット繊維シートである。【選択図】なし

公开(公告)号：JP2019093366A

公开(公告)日：2019-06-20

申请号：JP2017227080

申请日：2017-11-27

Applicant: TORAY INDUSTRIES

Inventor： IKEJIRI YUKI ,  AZUMA MASAKI ,  TABAYASHI SHUNSUKE ,  IYAMA YUJI ,  HANE RYOICHI

IPC: B01D69/10 ,  B01D69/12 ,  D04H3/14

Abstract: 【課題】精密ろ過膜、限外ろ過膜、ナノろ過膜および逆浸透膜等の分離膜を支持する際の優れた製膜性と、流体分離素子製造時に優れた加工性を有することに加え、優れた機械的強度を有しかつ剥離強度が高く、剥離抑制可能な分離膜の提供。【解決手段】熱可塑性連続フィラメントで構成された長繊維不織布からなる分離膜支持体上に、分離機能を有する膜が形成されてなる分離膜であって、前記分離膜支持体と前記膜の界面間におけるマクロボイドの割合が30%以下の分離膜であり、前記分離膜支持体の密度が0.70〜0.95g/cm3であり、かつ最大ポアサイズ径が18μm以上である。【選択図】なし

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：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.